NFPA RATING
FLAMMABILITY
4
1
1
MATERIAL SAFETY DATA SHEET
HEALTH REACTIVITY
to U.S. OSHA, CMA, ANSI and Canadian WHMIS Standards
Prepared
OTHER
PART I What is the material and what do I need to know in an emergency?
1. PRODUCT IDENTIFICATION
DIMETHYL ETHER - (CH3)2O
CHEMICAL NAME; CLASS:
Document Number: 001021
PRODUCT USE: For general analytical/synthetic chemical uses.
SUPPLIER/MANUFACTURER'S NAME: AIRGAS INC.
ADDRESS: 259 N. Radnor-Chester Road
Suite 100
Radnor, PA 19087-5283
BUSINESS PHONE: 1-610-687-5253
EMERGENCY PHONE: CHEMTREC: 1-800-424-9300
International: 703-527-3887
DATE OF PREPARATION: May 20, 1996
SECOND REVISION: January 23, 1998
2. COMPOSITION and INFORMATION ON INGREDIENTS
CHEMICAL NAME CAS # mole % EXPOSURE LIMITS IN AIR
ACGIH OSHA
TLV STEL PEL STEL IDLH OTHER
ppm ppm ppm ppm ppm
Dimethyl Ether 115-10-6 > 99.0% NE NE NE NE NE DFG-MAK = 1000 ppm
DuPont Acceptable Exposure Limit:
1000 ppm (8 hour and 12 hour TWA);
American Industrial Hygiene
Association: 1000 ppm, TWA
<1.0% None of the trace impurities in this mixture contribute significantly to the hazards associated
Maximum Impurities
with the product. All hazard information pertinent to this product has been provided in this
Material Safety Data Sheet, per the requirements of the OSHA Hazard Communication
Standard (29 CFR 1910.1200) and State equivalent standards.
NE = Not Established C = Ceiling Limit See Section 16 for Definitions of Terms Used
NOTE: All WHMIS required information is included. It is located in appropriate sections based on the ANSI Z400.1-1993 format.
DIMETHYL ETHER- (CH3)2 O MSDS (Document # 001021) PAGE 1 OF 9
3. HAZARD IDENTIFICATION
EMERGENCY OVERVIEW: Dimethyl Ether is a liquefied, flammable gas with an ethereal odor. High
concentrations of Dimethyl Ether can lead to central nervous system depression which could be incapacitating.
Overexposure to the gas could cause headache, nausea, dizziness, drowsiness, confusion, unconsciousness, and
death. Dimethyl Ether is highly flammable and present dangerous fire and rupture hazards when exposed to heat,
flames or oxidizers, or when accidentally released. Distant ignition and flashback are possible. When heated to
decomposition, Dimethyl Ether emits acrid smoke and irritating fumes. Flame or high temperature impinging on a
localized area of the cylinder of Dimethyl Ether can cause the cylinder to rupture without activating the cylinder鈥檚 relief
devices. Provide adequate fire protection during emergency response situations.
SYMPTOMS OF OVEREXPOSURE BY ROUTE OF EXPOSURE: The
most significant routes of overexposure for Dimethyl Ether are by HAZARDOUS MATERIAL INFORMATION
inhalation or contact. The following paragraphs describe symptoms of SYSTEM
exposure by route of exposure.
HEALTH
INHALATION: The main effect of inhalation exposure to Dimethyl Ether 1
(BLUE)
is central nervous system depression. Symptoms of such overexposure
to Dimethyl Ether can produce anesthetic effects (sleepiness, loss of
coordination, fatigue), as well as headaches, dizziness, nausea, and
unconsciousness. The following information summarizes the effects of
FLAMMABILITY 4
(RED)
Dimethyl Ether inhalation on humans:
CONCENTRATION EXPOSURE SYMPTOMS
5-7.5 % 12 minutes Mild intoxication.
REACTIVITY
8.2% 20-30 minutes Loss of coordination, blurring of (YELLOW) 1
vision, loss of feeling in the
appendages.
10% 10-20 minutes Narcosis (drowsiness, fatigue,
PROTECTIVE EQUIPMENT C
loss of coordination).
14.4% 36 minutes Unconsciousness.
20% 17 minutes Unconsciousness. EYES HANDS BODY
RESPIRATORY
Exposure to high concentrations of this gas can cause an oxygen-
deficient environment. Individuals breathing such an atmosphere may
See See
experience symptoms which include headaches, ringing in the ears,
Section 8 Section 8
dizziness, drowsiness, unconsciousness, nausea, vomiting, and
depression of all the senses. Under some circumstances of For routine industrial applications
overexposure, death may occur. The effects associated with various See Section 16 for Definition of Ratings
levels of oxygen are as follows:
CONCENTRATION SYMPTOM OF EXPOSURE
2-16% Oxygen: Breathing and pulse rate increased, muscular coordination slightly disturbed.
10-14% Oxygen Emotional upset, abnormal fatigue, disturbed respiration.
6-10% Oxygen: Nausea and vomiting, collapse or loss of consciousness.
Below 6%: Convulsive movements, possible respiratory collapse, and death.
OTHER POTENTIAL HEALTH EFFECTS: Contact with liquid or rapidly expanding gases (which are released under high
pressure) may cause frostbite. Symptoms of frostbite include change in skin color to white or grayish-yellow. The pain
after such contact can quickly subside.
HEALTH EFFECTS OR RISKS FROM EXPOSURE: An Explanation in Lay Terms. Overexposure to Dimethyl Ether may
cause the following health effects:
ACUTE: The most significant hazard associated with Dimethyl Ether is inhalation of vapors. Symptoms of such
overexposure to Dimethyl Ether can produce anesthetic effects (sleepiness, loss of coordination, fatigue), as well as
headaches, dizziness, nausea, and unconsciousness. Severe inhalation exposure can be fatal, due to Dimethyl Ether
overexposure or asphyxiation. Contact with liquid or rapidly expanding gases may cause frostbite.
CHRONIC: There are currently no known adverse health effects associated with chronic exposure to Dimethyl Ether.
TARGET ORGANS: Central nervous system, liver, cardiovascular system, respiratory system.
DIMETHYL ETHER- (CH3)2 O MSDS (Document # 001021) PAGE 2 OF 9
PART II What should I do if a hazardous situation occurs?
4. FIRST-AID MEASURES
RESCUERS SHOULD NOT ATTEMPT TO RETRIEVE VICTIMS OF EXPOSURE TO DIMETHYL
ETHER WITHOUT ADEQUATE PERSONAL PROTECTIVE EQUIPMENT. At a minimum, Self-
Contained Breathing Apparatus and Fire-Retardant Personal Protective equipment should be
worn. Adequate fire protection must be provided during rescue situations.
Remove victim(s) to fresh air, as quickly as possible. Trained personnel should administer supplemental oxygen and/or
cardio-pulmonary resuscitation, if necessary. Only trained personnel should administer supplemental oxygen.
In case of frostbite, place the frostbitten part in warm water. DO NOT USE HOT WATER. If warm water is not available, or
is impractical to use, wrap the affected parts gently in blankets. Alternatively, if the fingers or hands are frostbitten, place
the affected area in the armpit. Encourage victim to gently exercise the affected part while being warmed. Seek immediate
medical attention.
Victim(s) must be taken for medical attention. Rescuers should be taken for medical attention, if necessary. Take copy of
label and MSDS to physician or other health professional with victim(s). Refer to 鈥淩ecommendations to Physicians鈥?,
Section 11 (Toxicological Information) for additional information on first-aid measures.
5. FIRE-FIGHTING MEASURES
FLASH POINT (Tag Open Cup): -41掳C (-42掳F) NFPA RATING
AUTOIGNITION TEMPERATURE: 350掳C (662掳F) FLAMMABILITY
FLAMMABLE LIMITS (in air by volume, %):
Lower (LEL): 3.4% 4
Upper (UEL): 27.0%
1
1
HEALTH REACTIVITY
FIRE EXTINGUISHING MATERIALS: Extinguish Dimethyl Ether fires by shutting
off the source of the gas. Use water spray to cool fire-exposed containers,
structures, and equipment. Extinguishing media recommended for Dimethyl Ether
are: water spray, water fog, dry chemical or carbon dioxide. OTHER
See Section 16 for Definition of Ratings
UNUSUAL FIRE AND EXPLOSION HAZARDS: Dimethyl Ether is a flammable
gas. Old cylinders of Dimethyl Ether, or cylinders in which the contents may have been exposed to air for extended time
periods, may contain unstable peroxides which may rupture spontaneously or when heated. Vapor may travel considerable
distance to source of ignition and flash back.
DANGER! Fires impinging (direct flame) on the outside surface of unprotected pressure storage vessels of Dimethyl Ether
can be very dangerous. Direct flame exposure on the cylinder wall can cause an explosion either by BLEVE (Boiling Liquid
Expanding Vapor Explosion), or by exothermic decomposition. This is a catastrophic failure of the vessel releasing the
contents into a massive fireball and explosion. The resulting fire and explosion can result in severe equipment damage and
personnel injury or death over a large area around the vessel. For massive fires in large areas, use unmanned hose holder
or monitor nozzles; if this is not possible, withdraw from area and allow fire to burn.
Explosion Sensitivity to Mechanical Impact: Not sensitive.
Explosion Sensitivity to Static Discharge: Static discharge may cause Dimethyl Ether to ignite and the cylinder to
rupture.
SPECIAL FIRE-FIGHTING PROCEDURES: Structural firefighters must wear Self-Contained Breathing Apparatus and full
protective equipment. The best fire-fighting technique may be simply to let the burning gas escape from the pressurized
cylinder, tank car, or pipeline. Stop the leak before extinguishing fire. If the fire is extinguished before the leak is sealed,
the leaking gas could re-ignite without warning and cause extensive damage, injury, or fatality. In this case, increase
ventilation (in enclosed areas) to prevent flammable mixture formation. Because of the potential for a BLEVE, evacuation
of non-emergency personnel is essential. If water is not available for cooling or protection of vessel exposures, evacuate
the area. Refer to the North American Emergency Response Guidebook (Guide #115) for additional information.
DIMETHYL ETHER- (CH3)2 O MSDS (Document # 001021) PAGE 3 OF 9
6. ACCIDENTAL RELEASE MEASURES
SPILL AND LEAK RESPONSE: Uncontrolled releases should be responded to by trained personnel using pre-planned
procedures. Proper protective equipment should be used. In case of a release, clear the affected area, protect people, and
respond with trained personnel. Adequate fire protection must be provided. Minimum Personal Protective Equipment
should be Level B: fire-retardant protective clothing, mechanical resistant gloves and Self-Contained Breathing
Apparatus. Use only non-sparking tools and equipment. Locate and seal the source of the leaking gas. Protect
personnel attempting the shut-off with water-spray or fog. Allow the gas to dissipate. Monitor the surrounding area for
combustible gas and oxygen levels. Combustible gas concentration must be below 10% of the LEL (LEL = 3.4%) prior to
entry. The atmosphere must have at least 19.5 percent oxygen before personnel can be allowed in the area without Self-
Contained Breathing Apparatus. Attempt to close the main source valve prior to entering the area. If this does not stop the
release (or if it is not possible to reach the valve), allow the gas to release in-place or remove it to a safe area and allow the
gas to be released there.
THIS IS AN EXTREMELY FLAMMABLE GAS. Protection of all personnel and the area must be maintained.
PART III How can I prevent hazardous situations from occurring?
7. HANDLING and STORAGE
WORK PRACTICES AND HYGIENE PRACTICES: As with all chemicals, avoid getting Dimethyl Ether IN YOU. Do not
eat or drink while handling chemicals. Be aware of any signs of exposure as indicated in Section 3 (Hazard Identification);
exposures to fatal concentrations of Dimethyl Ether could occur rapidly.
STORAGE AND HANDLING PRACTICES: Cylinders should be stored in dry, well-ventilated areas away from sources of
heat sparks and open flame. Protect against physical damage. Outside or detached storage is preferred. Inside storage
should be in cool, well ventilated location away from all sources of ignition. Ensure that the valves of cylinders are kept
tightly closed. Compressed gases can present significant safety hazards. Store containers away from heavily trafficked
areas and emergency exits. Store away from strong oxidizing agents (e.g., bromine, bromine pentafluoride) , corrosives
and other incompatibles such as ozone, fluorine, and chromic anhydride. Post 鈥淣o Smoking or Open Flames鈥? signs in
storage or use areas.
SPECIAL PRECAUTIONS FOR HANDLING GAS CYLINDERS: Protect cylinders against physical damage. Store in cool,
dry, well-ventilated area, away from sources of heat, ignition and direct sunlight. Do not allow area where cylinders are
stored to exceed 52掳C (125掳F). Use a check valve or trap in the discharge line to prevent hazardous backflow. Cylinders
should be stored upright and be firmly secured to prevent falling or being knocked over. Cylinders can be stored in the
open, but in such cases, should be protected against extremes of weather and from the dampness of the ground to prevent
rusting. Never tamper with pressure relief devices in valves and cylinders. Electrical equipment should be non-sparking or
explosion proof. The following rules are applicable to work situations in which cylinders are being used:
Before Use: Move cylinders with a suitable hand-truck. Do not drag, slide or roll cylinders. Do not drop cylinders or permit
them to strike each other. Secure cylinders firmly. Leave the valve protection cap in-place (where provided) until cylinder is
ready for use.
During Use: Use designated CGA fittings and other support equipment. Do not use adapters. Do not heat cylinder by
any means to increase the discharge rate of the product from the cylinder. Use check valve or trap in discharge line to
prevent hazardous backflow into the cylinder. Do not use oils or grease on gas-handling fittings or equipment.
After Use: Close main cylinder valve. Replace valve protection cap (where provided). Mark empty cylinders 鈥淓MPTY鈥?.
NOTE: Use only DOT or ASME code containers. Earth-ground and bond all lines and equipment associated with Dimethyl
Ether. Close valve after each use and when empty. Cylinders must not be recharged except by or with the consent of
owner. For additional information refer to the Compressed Gas Association Pamphlet P-1, Safe Handling of Compressed
Gases in Containers. Additionally, refer to CGA Bulletin SB-2 鈥淥xygen Deficient Atmospheres鈥?.
PROTECTIVE PRACTICES DURING MAINTENANCE OF CONTAMINATED EQUIPMENT: Follow practices indicated in
Section 6 (Accidental Release Measures). Make certain application equipment is locked and tagged-out safely. Purge gas
handling equipment with inert gas (e.g., nitrogen) before attempting repairs.
8. EXPOSURE CONTROLS - PERSONAL PROTECTION
VENTILATION AND ENGINEERING CONTROLS: Use with adequate ventilation. Local exhaust ventilation is preferred,
because it prevents Dimethyl Ether dispersion into the work place by eliminating it at its source. If appropriate, install
automatic monitoring equipment to detect the presence of potentially flammable air-gas mixtures and the level of oxygen.
DIMETHYL ETHER- (CH3)2 O MSDS (Document # 001021) PAGE 4 OF 9
8. EXPOSURE CONTROLS - PERSONAL PROTECTION (Continued)
RESPIRATORY PROTECTION: Maintain exposure levels of Dimethyl Ether below the levels listed in Section 2
(Composition and Information on Ingredients) and oxygen levels above 19.5% in the workplace. Use supplied air
respiratory protection if Dimethyl Ether levels exceed exposure limits and if oxygen level is below 19.5% or during
emergency response to a release of Dimethyl Ether. If respiratory protection is required, follow the requirements of the
Federal OSHA Respiratory Protection Standard (29 CFR 1910.134), or equivalent State standards.
EYE PROTECTION: Splash goggles, chemical safety glasses or preferably a full face shield for protection from rapidly
expanding gases.
HAND PROTECTION: Mechanical resistant gloves should be worn when handling cylinders of Dimethyl Ether. Chemically
resistant gloves should be worn when using Dimethyl Ether in situations where skin contact may be anticipated. Buna-N
rubber gloves are recommended.
BODY PROTECTION: Use body protection appropriate for task. An apron or coveralls may be necessary if splashes of
liquid may be anticipated. Transfer of large quantities under pressure may require protective equipment appropriate to
protect employees from gas spraying, as well as fire-retardant items.
9. PHYSICAL and CHEMICAL PROPERTIES
VAPOR DENSITY: 1.918 kg/m3 (0.1197 lb/ft3) pH: Not applicable.
SPECIFIC GRAVITY (air = 1): 1.612 FREEZING POINT: -141.5掳C (-222.7掳F)
SOLUBILITY IN WATER @17.8掳C (64掳F): 7% BOILING POINT @ 1 atm: -24.8掳C (-12.7掳F)
EVAPORATION RATE (nBuAc = 1): Not determined. EXPANSION RATIO: Not applicable
ODOR THRESHOLD: Not determined. VAPOR PRESSURE (psia): 77.0
SPECIFIC VOLUME (ft3/lb): 8.4
COEFFICIENT WATER/OIL DISTRIBUTION: Log Kow = 0.10, 0.12.
APPEARANCE AND COLOR: Colorless gas at room temperature, or colorless liquid under pressure, both with an ethereal
odor.
HOW TO DETECT THIS SUBSTANCE (warning properties): The odor is a distinct characteristic of this gas; however, it
should not be relied on to provide an adequate warning of a release. In terms of leak detection, fittings and joints can be
painted with a soap solution to detect leaks, which will be indicated by a bubble formation.
10. STABILITY and REACTIVITY
STABILITY: Reactive peroxides may be formed upon prolonged exposure of the contents of the cylinder to air. Distillation
or evaporation can concentrate peroxides. The peroxides which are formed can decompose violently, which can result in a
fire and cylinder rupture.
DECOMPOSITION PRODUCTS: Decomposes to form carbon monoxide and carbon dioxide.
MATERIALS WITH WHICH SUBSTANCE IS INCOMPATIBLE: Dimethyl Ether is incompatible with the following materials:
strong oxidizers, (e.g., bromine, bromine azide), oxygen, carbon monoxide, acetic acid, organic acid anhydrides and
halogens. This gas reacts violently with ozone, fluorine and chromic anhydride.
HAZARDOUS POLYMERIZATION: Not expected to occur.
CONDITIONS TO AVOID: Contact with incompatible materials and exposure to heat, sparks and other sources of ignition.
If cylinders are exposed to extremely high temperatures, the cylinders may rupture. Do not store Dimethyl Ether for
prolonged periods of time.
PART IV Is there any other useful information about this material?
11. TOXICOLOGICAL INFORMATION
TOXICITY DATA: The following information is for Dimethyl Ether:
LC50 (inhalation, rat) = 164,000 ppm/4H TCLo (inhalation, rat) = 2 ppb/6 hours/30 weeks-intermittent
3
LC50 (inhalation, rat) = 308 g/m Probable LD (oral, human) = 0.5-5 g/kg
DIMETHYL ETHER- (CH3)2 O MSDS (Document # 001021) PAGE 5 OF 9
11. TOXICOLOGICAL INFORMATION (Continued)
TOXICITY DATA (continued):
ACUTE INHALATION EFFECTS/ CHRONIC INHALATION EFFECTS FOR ANIMALS: Toxicity demonstrated in animals exposed by inhalation for
short-term exposures include anesthetic effects, and depression of arterial blood pressure. Cardiac sensitization occurred in dogs exposed to
concentrations of 20% in air and greater. Toxicity experienced in animals from repeated exposure by inhalation include changes in white blood cell
counts, anesthetic effects, increase in relative body/organ weight ratios for liver, spleen and testes and weight-gain suppression. Toxicity
demonstrated in rats upon log-term, repeated exposure at 200, 2000, 20000 ppm by inhalation include liver-weight reduction, and alterations of liver
enzymes level in the high group. In a different study in which rats were exposed to concentrations of 2000, 10000, or 25000 ppm observations
include decreased red blood cell counts, spleen changes, decreased survival of males at the two higher exposure levels and hemolytic effects at
25,000 ppm. Tests in animals demonstrate no carcinogenic or developmental toxicity.
EYE IRRITATION: No studies available for Dimethyl Ether.
SUSPECTED CANCER AGENT: Dimethyl Ether is not found on the following lists: FEDERAL OSHA Z LIST, NTP, IARC,
CAL/OSHA, and therefore is neither considered to be nor suspected to be a cancer-causing agent by these agencies.
Tests in animals demonstrate no carcinogenic toxicity.
IRRITANCY OF PRODUCT: Dimethyl Ether is not irritating; however, contact with rapidly expanding gases can cause
frostbite to exposed tissue.
SENSITIZATION TO THE PRODUCT: Dimethyl Ether is not known to cause sensitization in humans. Cardiac
sensitization has been noted in clinical studies involving test animals exposed to relatively high doses of Dimethyl Ether.
REPRODUCTIVE TOXICITY INFORMATION: Listed below is information concerning the effects of Dimethyl Ether on the
human reproductive system.
Mutagenicity: No human mutagenicity effects have been described for Dimethyl Ether. Dimethyl Ether does not produce
genetic damage in bacterial cell cultures but has not been tested in animals.
Embryotoxicity: No embryotoxic effects have been described for Dimethyl Ether.
Teratogenicity: No human teratogenicity effects have been described for Dimethyl Ether.
Reproductive Toxicity: No human reproductive toxicity effects have been described for Dimethyl Ether. Tests in animals
demonstrate no developmental toxicity.
A mutagen is a chemical which causes permanent changes to genetic material (DNA) such that the changes will propagate
through generation lines. An embryotoxin is a chemical which causes damage to a developing embryo (i.e. within the first
eight weeks of pregnancy in humans), but the damage does not propagate across generational lines. A teratogen is a
chemical which causes damage to a developing fetus, but the damage does not propagate across generational lines. A
reproductive toxin is any substance which interferes in any way with the reproductive process.
MEDICAL CONDITIONS AGGRAVATED BY EXPOSURE: Individuals with pre-existing diseases of the central nervous
system or cardiovascular system may have increased susceptibility to exposures to Dimethyl Ether.
RECOMMENDATIONS TO PHYSICIANS: Physicians should use special caution in situations of emergency life-support
before administering catecholamine drugs, such as epinephrine, as a stimulant in cases of Dimethyl Ether poisoning
because of possible increased risk of eliciting cardiac dysrythmias. Administer oxygen, if necessary. Treat symptoms and
reduce or eliminate exposure.
BIOLOGICAL EXPOSURE INDICES (BEIs): Currently, Biological Exposure Indices (BEIs) are not applicable for Dimethyl
Ether.
12. ECOLOGICAL INFORMATION
ENVIRONMENTAL STABILITY: This gas will be dissipated rapidly in well-ventilated areas. Additional environmental data
are available for Dimethyl Ether as follows:
Solubility: 35,300 mg/L in water at 25掳C. Biodegradation: May be resistant to biodegradation, based on other ethers; estimated half-life = 2-15
days. Bioconcentration: BCF (Bioconcentration Factor) of 1.7 (estimated). Based on this BCF, dimethyl ether is not expected to
bioconcentrate in aquatic organisms. Log Kow = 0.10, 0.12.
EFFECT OF MATERIAL ON PLANTS or ANIMALS: This gas can be harmful to animal life. Suspected anesthetic effect on
a variety of test animals during clinical studies indicate adverse effects on the central nervous system, liver and cardio-
vascular system. No information is currently available concerning adverse effects expected to occur to plant-life. Plants
may be damaged by frost produced in the presence of rapidly expanding gases.
EFFECT OF CHEMICAL ON AQUATIC LIFE: Aquatic toxicity data are available for Dimethyl Ether, as follows:
LC50 (Daphnia) = 1852 mg/L, 96 hours LC50 (goldfish) = 3677 mg/L, 96 hours
LC50 (fathead minnow) = 2695 mg/L, 96 hours LC50 (bluegill) = 3429 mg/L, 96 hours
LC50 (rainbow trout) = 3082 mg/L, 96 hours LC50 (mosquito fish) = 2978 mg/L, 96 hours
LC50 (catfish) = 2419 mg/L, 96 hours
DIMETHYL ETHER- (CH3)2 O MSDS (Document # 001021) PAGE 6 OF 9
13. DISPOSAL CONSIDERATIONS
PREPARING WASTES FOR DISPOSAL: Waste disposal must be in accordance with appropriate Federal, State, and local
regulations. Return cylinders with any residual product to Airgas Inc. Do not dispose of locally.
14. TRANSPORTATION INFORMATION
THIS MATERIAL IS HAZARDOUS AS DEFINED BY 49 CFR 172.101 BY THE U.S. DEPARTMENT OF
TRANSPORTATION.
PROPER SHIPPING NAME: Dimethyl ether
HAZARD CLASS NUMBER and DESCRIPTION: 2.1 (Flammable Gas)
UN IDENTIFICATION NUMBER: UN 1033
PACKING GROUP: Not Applicable
DOT LABEL(S) REQUIRED: FLAMMABLE GAS
NORTH AMERICAN EMERGENCY RESPONSE GUIDEBOOK NUMBER (1996): 115
MARINE POLLUTANT: Dimethyl Ether is not classified by the DOT as a Marine Pollutant (as defined by 49 CFR 172.101,
Appendix B).
TRANSPORT CANADA TRANSPORTATION OF DANGEROUS GOODS REGULATIONS: THIS MATERIAL IS
CONSIDERED AS DANGEROUS GOODS. Use the above information for the preparation of Canadian Shipments.
15. REGULATORY INFORMATION
U.S. SARA REPORTING REQUIREMENTS: Dimethyl Ether is not subject to the reporting requirements of Sections 302,
304, and 313 of Title III of the Superfund Amendments and Reauthorization Act.
U.S. SARA THRESHOLD PLANNING QUANTITY: Not applicable.
U.S. CERCLA REPORTABLE QUANTITY (RQ): Not applicable.
CANADIAN DSL/NDSL INVENTORY: Dimethyl Ether is listed on the DSL Inventory.
U.S. TSCA INVENTORY STATUS: Dimethyl Ether is listed on the TSCA Inventory.
OTHER U.S. FEDERAL REGULATIONS: Dimethyl Ether is subject to the reporting requirements of Section 112(r) of the
Clean Air Act. The Threshold Quantity is 10,000 lbs. Compliance with the OSHA Process Safety Standard (29 CFR
1910.119) may be applicable to operations involving the use of Dimethyl Ether. Under this regulation Dimethyl Ether is not
listed in Appendix A, however, any process that involves a flammable gas on-site, in one location, in quantities of 10,000 lb
(4,553 kg) or greater is covered under this regulation unless it is used as a fuel.
U.S. STATE REGULATORY INFORMATION: Dimethyl Ether is covered under specific State regulations, as denoted
below:
Alaska - Designated Toxic and Hazardous Michigan - Critical Materials Register: No. Pennsylvania - Hazardous Substance List:
No.
Substances: No. Minnesota - List of Hazardous
Rhode Island - Hazardous Substance List:
California - Permissible Exposure Limits Substances: Dimethyl Ether.
Dimethyl Ether.
for Chemical Contaminants: No. Missouri - Employer Information/Toxic
Texas - Hazardous Substance List: No.
Florida - Substance List: Dimethyl Ether. Substance List: No.
West Virginia - Hazardous Substance List:
Illinois - Toxic Substance List: No. New Jersey - Right to Know Hazardous
No.
Kansas - Section 302/313 List: No. Substance List: Dimethyl Ether.
Wisconsin - Toxic and Hazardous
Massachusetts - Substance List: Dimethyl North Dakota - List of Hazardous
Substances: No.
Ether. Chemicals, Reportable Quantities:
No.
CALIFORNIA SAFE DRINKING WATER AND TOXIC ENFORCEMENT ACT (PROPOSITION 65): Dimethyl Ether is
not on the California Proposition 65 lists.
LABELING:
DANGER: FLAMMABLE LIQUID AND GAS UNDER PRESSURE.
CAN FORM EXPLOSIVE MIXTURES WITH AIR.
MAY CAUSE ANESTHETIC EFFECTS.
MAY CAUSE IRRITATION TO SKIN, EYES, AND MUCOUS MEMBRANES.
MAY CAUSE FROSTBITE.
DIMETHYL ETHER- (CH3)2 O MSDS (Document # 001021) PAGE 7 OF 9
15. REGULATORY INFORMATION (Continued)
LABELING (continued):
Keep away from heat, flames, and sparks.
Store and use with adequate ventilation.
Cylinder temperature should not exceed 52掳C (125掳F)
Avoid breathing gas.
Do not get liquid in eyes, on skin or clothing.
Close valve after each use and when empty.
Use in accordance with the Material Safety Data Sheet.
FIRST-AID: IF INHALED, remove to fresh air. If not breathing, give artificial respiration. If breathing is
difficult, give oxygen. Call a physician.
IN CASE OF FROSTBITE, obtain immediate medial attention.
IN CASE OF CONTACT, immediately flush eyes or skin with water for at least 15 minutes
while removing contaminated clothing and shoes. Call a physician.
DO NOT REMOVE THIS PRODUCT LABEL
CANADIAN WHMIS SYMBOLS: Class A: Compressed Gas
Class B: Flammable Gas
16. OTHER INFORMATION
PREPARED BY: CHEMICAL SAFETY ASSOCIATES, Inc.
9163 Chesapeake Drive, San Diego, CA 92123-1002
619/565-0302
The information contained herein is based on data considered accurate. However, no warranty is expressed or implied regarding the
accuracy of these data or the results to be obtained from the use thereof. AIRGAS, Inc. assumes no responsibility for injury to the vendee or
third persons proximately caused by the material if reasonable safety procedures are not adhered to as stipulated in the data sheet.
Additionally, AIRGAS, Inc. assumes no responsibility for injury to vendee or third persons proximately caused by abnormal use of the material
even if reasonable safety procedures are followed. Furthermore, vendee assumes the risk in his use of the material.
DIMETHYL ETHER- (CH3)2 O MSDS (Document # 001021) PAGE 8 OF 9
DEFINITIONS OF TERMS
A large number of abbreviations and acronyms appear on a MSDS. Some of these which are commonly used include the following:
CAS #: This is the Chemical Abstract Service Number which uniquely identifies each constituent. It is used for computer-related searching.
EXPOSURE LIMITS IN AIR: NATIONAL FIRE PROTECTION ASSOCIATION (Continued):
Flammability Hazard and Reactivity Hazard: Refer to definitions for
ACGIH - American Conference of Governmental Industrial Hygienists, a
鈥淗azardous Materials Identification System鈥?.
professional association which establishes exposure limits. TLV -
Threshold Limit Value - an airborne concentration of a substance which
FLAMMABILITY LIMITS IN AIR:
represents conditions under which it is generally believed that nearly all
Much of the information related to fire and explosion is derived from the
workers may be repeatedly exposed without adverse effect. The duration
National Fire Protection Association (NFPA). Flash Point - Minimum
must be considered, including the 8-hour Time Weighted Average (TWA),
temperature at which a liquid gives off sufficient vapors to form an ignitable
the 15-minute Short Term Exposure Limit, and the instantaneous Ceiling
mixture with air. Autoignition Temperature: The minimum temperature
Level (C). Skin absorption effects must also be considered.
required to initiate combustion in air with no other source of ignition. LEL -
OSHA - U.S. Occupational Safety and Health Administration. PEL -
the lowest percent of vapor in air, by volume, that will explode or ignite in
Permissible Exposure Limit - This exposure value means exactly the same
the presence of an ignition source. UEL - the highest percent of vapor in air,
as a TLV, except that it is enforceable by OSHA. The OSHA Permissible
by volume, that will explode or ignite in the presence of an ignition source.
Exposure Limits are based in the 1989 PELs and the June, 1993 Air
Contaminants Rule (Federal Register: 58: 35338-35351 and 58: 40191).
TOXICOLOGICAL INFORMATION:
Both the current PELs and the vacated PELs are indicated. The phrase,
Possible health hazards as derived from human data, animal studies, or
鈥淰acated 1989 PEL,鈥? is placed next to the PEL which was vacated by Court
from the results of studies with similar compounds are presented.
Order.
Definitions of some terms used in this section are: LD50 - Lethal Dose
IDLH - Immediately Dangerous to Life and Health - This level represents a
(solids & liquids) which kills 50% of the exposed animals; LC50 - Lethal
concentration from which one can escape within 30-minutes without
Concentration (gases) which kills 50% of the exposed animals; ppm
suffering escape-preventing or permanent injury. The DFG - MAK is the
concentration expressed in parts of material per million parts of air or water;
Republic of Germany鈥檚 Maximum Exposure Level, similar to the U.S. PEL.
mg/m3 concentration expressed in weight of substance per volume of air;
NIOSH is the National Institute of Occupational Safety and Health, which is
mg/kg quantity of material, by weight, administered to a test subject, based
the research arm of the U.S. Occupational Safety and Health Administration
on their body weight in kg. Data from several sources are used to evaluate
(OSHA). NIOSH issues exposure guidelines called Recommended
the cancer-causing potential of the material. The sources are: IARC - the
Exposure Levels (RELs). When no exposure guidelines are established,
International Agency for Research on Cancer; NTP - the National
an entry of NE is made for reference.
Toxicology Program, RTECS - the Registry of Toxic Effects of Chemical
Substances, OSHA and CAL/OSHA. IARC and NTP rate chemicals on a
HAZARD RATINGS:
scale of decreasing potential to cause human cancer with rankings from 1
HAZARDOUS MATERIALS IDENTIFICATION SYSTEM: Health Hazard: 0
to 4. Subrankings (2A, 2B, etc.) are also used. Other measures of toxicity
(minimal acute or chronic exposure hazard); 1 (slight acute or chronic
include TDLo, the lowest dose to cause a symptom and TCLo the lowest
exposure hazard); 2 (moderate acute or significant chronic exposure
concentration to cause a symptom; TDo, LDLo, and LDo, or TC, TCo,
hazard); 3 (severe acute exposure hazard; onetime overexposure can result
LCLo, and LCo, the lowest dose (or concentration) to cause lethal or toxic
in permanent injury and may be fatal); 4 (extreme acute exposure hazard;
effects. BEI - Biological Exposure Indices, represent the levels of
onetime overexposure can be fatal). Flammability Hazard: 0 (minimal
determinants which are most likely to be observed in specimens collected
hazard); 1 (materials that require substantial pre-heating before burning); 2
from a healthy worker who has been exposed to chemicals to the same
(combustible liquid or solids; liquids with a flash point of 38-93掳C [100-
extent as a worker with inhalation exposure to the TLV. Ecological
200掳F]); 3 (Class IB and IC flammable liquids with flash points below 38掳C Information: EC is the effect concentration in water.
[100掳F]); 4 (Class IA flammable liquids with flash points below 23掳C [73掳F]
REGULATORY INFORMATION:
and boiling points below 38掳C [100掳F]. Reactivity Hazard: 0 (normally
This section explains the impact of various laws and regulations on the
stable); 1 (material that can become unstable at elevated temperatures or
material. EPA is the U.S. Environmental Protection Agency. WHMIS is the
which can react slightly with water); 2 (materials that are unstable but do not
Canadian Workplace Hazardous Materials Information System. DOT and
detonate or which can react violently with water); 3 (materials that can
TC are the U.S. Department of Transportation and the Transport Canada,
detonate when initiated or which can react explosively with water); 4
(materials that can detonate at normal temperatures or pressures). respectively. Superfund Amendments and Reauthorization Act (SARA); the
NATIONAL FIRE PROTECTION ASSOCIATION: Health Hazard: 0 Canadian Domestic/Non-Domestic Substances List (DSL/NDSL); the U.S.
(material that on exposure under fire conditions would offer no hazard Toxic Substance Control Act (TSCA); Marine Pollutant status according to
beyond that of ordinary combustible materials); 1 (materials that on the DOT; the Comprehensive Environmental Response, Compensation,
exposure under fire conditions could cause irritation or minor residual and Liability Act (CERCLA or Superfund); and various state regulations.
injury); 2 (materials that on intense or continued exposure under fire
conditions could cause temporary incapacitation or possible residual injury);
3 (materials that can on short exposure could cause serious temporary or
residual injury); 4 (materials that under very short exposure causes death
or major residual injury).
DIMETHYL ETHER- (CH3)2 O MSDS (Document # 001021) PAGE 9 OF 9
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