MATERIAL SAFETY DATA SHEET
Prepared to U.S. OSHA, CMA, ANSI and Canadian WHMIS Standards
1. PRODUCT IDENTIFICATION
CHEMICAL NAME; CLASS: NITROGEN/HYDROGEN GAS MIXTURE
CHEMICAL FAMILY: Inorganic Non-Flammable Gas Mixture PRODUCT USE: Research Gas
MANUFACTURER
MATHESON TRI-GAS, INC.
959 ROUTE 46 EAST
PARSIPPANY, NJ 07054-0624
USA
Phone: 973/257-1100
EMERGENCY PHONE: CHEMTREC (U.S. DOMESTIC): 1-800-424-9300
CHEMTREC INTERNATIONAL: 1-703-527-3887
CANUTEC (CANADA): 1-613-996-6666
2. COMPOSITION and INFORMATION ON INGREDIENTS
(10,000 ppm = 1%)
CHEMICAL NAME CAS # mole % EXPOSURE LIMITS IN AIR
ACGIH-TLV OSHA-STEL NIOSH OTHER
TWA STEL TWA STEL IDLH
ppm ppm ppm ppm ppm ppm
Hydrogen 1333-74-0 1-< 5.7 There are no specific exposure limits for Hydrogen. Hydrogen is a simple
asphyxiant (SA). Oxygen levels should be maintained above 19.5%.
Nitrogen 7727-37-9 Balance There are no specific exposure limits for Nitrogen. Oxygen levels should be
maintained above 19.5%.
NOTE: All WHMIS required information is included. It is located in appropriate sections based on the ANSI Z400.1-1998 format. This product has
been classified in accordance with the hazard criteria of the CPR and the MSDS contains all the information required by the CPR.
See Section 16 for Definitions of Terms Used.
NITROGEN, HYDROGEN GAS MIXTURE MSDS EFFECTIVE DATE: APRIL 11, 2002
PAGE 1 OF 9 MATH0021
3. HAZARD IDENTIFICATION
EMERGENCY OVERVIEW: This is a colorless, odorless, non-flammable gas mixture. The main health
hazard associated with releases of this gas mixture is asphyxiation by displacement of oxygen, as each
component of this mixture is a simple asphyxiant. This gas mixture presents no hazard of flammability or
reactivity. Flame or high temperature impinging on a localized area of the cylinder can cause cylinder to
rupture violently or explosively.
SYMPTOMS OF OVER-EXPOSURE BY ROUTE OF EXPOSURE: The most significant route of over-exposure
for this product is by inhalation.
INHALATION: High concentrations of this gas mixture can cause an oxygen-deficient environment,
especially if released in a poorly-ventilated area (e.g., an enclosed or confined space). Individuals
breathing such an atmosphere may experience symptoms which include headaches, ringing in ears,
dizziness, drowsiness, unconsciousness, nausea, vomiting, and depression of all the senses. Under
some circumstances of overexposure, death may occur. The effects associated with various levels of
oxygen are as follows:
CONCENTRATION OF OXYGEN OBSERVED EFFECT
12-16% Oxygen: Breathing and pulse rate increase, muscular coordination
slightly disturbed.
10-14% Oxygen: Emotional upset, abnormal fatigue, disturbed respiration.
6-10% Oxygen: Nausea, vomiting, collapse, or loss of consciousness.
Below 6%: Convulsive movements, possible respiratory collapse, and
death.
CONTACT WITH SKIN or EYES: Contact with rapidly expanding gases (which are released under high
pressure) may cause frostbite.
SKIN ABSORPTION: No component of this gas mixture presents a hazard of skin absorption.
HEALTH EFFECTS OR RISKS FROM EXPOSURE: Over-exposure to this gas mixture may cause the
following health effects:
ACUTE: The most significant hazard associated with this gas mixture is inhalation of oxygen-deficient
atmospheres. Symptoms of oxygen deficiency include ringing in ears, headaches, shortness of breath,
wheezing, dizziness, indigestion, and nausea. At high concentrations, unconsciousness or death may
occur.
CHRONIC: There are currently no known adverse health effects associated with chronic exposure to this
gas mixture.
TARGET ORGANS: ACUTE: Respiratory system. CHRONIC: None.
HMIS RATING: HEALTH = 0 FLAMMABILITY = 0 REACTIVITY = 0 PPE LEVEL = B
Hazard Scale: 0 = Minimal 1 = Slight 2 = Moderate 3 = Serious 4 = Severe PPE LEVEL B =
Goggles, gloves (leather for handling cylinders)
NITROGEN, HYDROGEN GAS MIXTURE MSDS EFFECTIVE DATE: APRIL 11, 2002
PAGE 2 OF 9 MATH0021
4. FIRST-AID MEASURES
GENERAL INFORMATION: Remove to fresh air, as quickly as possible. Only trained personnel should
administer supplemental oxygen and/or cardio-pulmonary resuscitation, if necessary. Seek medical
attention immediately.
SKIN EXPOSURE: If release of this gas mixture has resulted in frostbite, warm affected area slowly. Seek
immediate medical attention.
EYE EXPOSURE: If release of this gas mixture has affected the eyes, seek immediate medical attention.
MEDICAL CONDITIONS AGGRAVATED BY EXPOSURE: Pre-existing respiratory conditions may be
aggravated by overexposure to this gas mixture.
5. FIRE-FIGHTING MEASURES
FLASH POINT: Not applicable; non-flammable gas.
NFPA RATING
AUTOIGNITION TEMPERATURE: Not applicable. FLAMMABILITY
FLAMMABLE LIMITS (in air by volume, %): Not applicable. 0
FIRE EXTINGUISHING MATERIALS: Use fire-extinguishing material 0
0
HEALTH REACTIVITY
appropriate for surrounding materials. Use water spray to cool fire-
exposed structures, cylinders and equipment.
UNUSUAL FIRE AND EXPLOSION HAZARD: None; this gas is non-
OTHER
flammable.
See Section 16 for
EXPLOSION SENSITIVITY TO MECHANICAL IMPACT: Not sensitive.
Definition of Ratings
EXPLOSION SENSITIVITY TO STATIC DISCHARGE: Not sensitive.
SPECIAL FIRE-FIGHTING PROCEDURES: Evacuate all personnel from danger area. Immediately cool
cylinders with water spray from maximum distance, to avoid danger of cylinder rupture. Incipient fire
responders should wear eye protection. Structural fire fighters must wear Self-Contained Breathing
Apparatus and full protective equipment. When cool, move cylinders from fire area if this can be done
without risk to firefighters. Other information for pre-planning can be found in the North American
Emergency Response Guidebook (Guide Number 126).
6. ACCIDENTAL RELEASE MEASURES
LEAK RESPONSE: Evacuate immediate area. Uncontrolled releases should be responded to by trained
personnel using pre-planned procedures. Proper protective equipment, should be used in the event of a
significant release from a single cylinder. Use only non-sparking tools. Call CHEMTREC (1-800-424-9300)
for emergency assistance. Or if in Canada, call CANUTEC (613-996-6666).
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. Protect personnel attempting to shut-off with water spray. Monitor the surrounding
area for the level of Oxygen. The atmosphere must have at least 19.5 percent Oxygen before non-
emergency personnel can be allowed in the area without Self-Contained Breathing Apparatus.
NITROGEN, HYDROGEN GAS MIXTURE MSDS EFFECTIVE DATE: APRIL 11, 2002
PAGE 3 OF 9 MATH0021
7. HANDLING and USE
WORK PRACTICES AND HYGIENE PRACTICES
Do not eat or drink while handling chemicals.
Be aware of all potential exposure symptoms; exposures to a fatal oxygen-deficient atmosphere could occur
without any significant warning symptoms.
All work operations should be monitored in such a way that emergency personnel can be immediately
contacted in the event of a release.
Workers who handle this gas mixture should wear protective clothing, as listed in Section 8 (Exposure
Controls and Personal Protection).
If ventilation controls are not adequate to provide sufficient oxygen content, proper respiratory protection
equipment should be provided and workers using such equipment should be carefully trained in its
operation and limitations.
Precautions must always be taken to prevent suck-back of foreign materials into the cylinder by using a
check-valve, or vacuum break, since suck-back may cause dangerous pressure changes within the
cylinder.
STORAGE AND HANDLING PRACTICES:
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. Cylinders should be stored in dry, well-ventilated areas
away from sources of heat or ignition. Do not allow the area where cylinders are stored to exceed 52掳C
(125掳F).
SPECIAL PRECAUTIONS FOR HANDLING GAS CYLINDERS: Compressed gases can present significant
safety hazards. 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
(where provided) in-place until cylinder is ready for use.
During Use: Use designated CGA fittings and other support equipment. Do not use adapters. Do not use
oils or grease on gas-handling fittings or equipment. Immediately contact the supplier if there are any
difficulties associated with operating the cylinder valve. Never insert an object (e.g wrench, screwdriver,
pry bar, etc.) into valve cap openings. Doing so may damage the valve, causing a leak to occur. Use an
adjustable strap wrench to remove over-tight or rusted caps. Never strike an arc, on a compressed gas
cylinder or make a cylinder part of and electric circuit.
After Use: Close main cylinder valve. Replace valve protection cap. Close valve after each use and when
empty. Mark empty cylinders 鈥淓MPTY鈥?.
PROTECTIVE PRACTICES DURING MAINTENANCE OF CONTAMINATED EQUIPMENT: Refer to current
CGA Guidelines for information on protective practices during maintenance of contaminated equipment.
8. EXPOSURE CONTROLS - PERSONAL PROTECTION
VENTILATION AND ENGINEERING CONTROLS: Use with adequate, explosion-proof ventilation to ensure
compliance with exposure limits described in Section 2 (Composition and Information on Ingredients). Local
exhaust ventilation is preferred, because it prevents dispersion of this gas mixture into the work place by
eliminating it at its source. If appropriate, install automatic monitoring equipment to detect the level of
Oxygen.
NITROGEN, HYDROGEN GAS MIXTURE MSDS EFFECTIVE DATE: APRIL 11, 2002
PAGE 4 OF 9 MATH0021
8. EXPOSURE CONTROLS - PERSONAL PROTECTION (Continued)
RESPIRATORY PROTECTION: Maintain the Oxygen level above 19.5% in the workplace. If necessary, use
only respiratory protection authorized in the U.S. Federal OSHA Respiratory Protection Standard (29 CFR
1910.134), or equivalent U.S. State standards and Canadian CSA Standard Z94.4-93. Oxygen levels below
19.5% are considered IDLH by OSHA. In such atmospheres, use of a full-facepiece pressure/demand
SCBA or a full facepiece, supplied air respirator with auxiliary self-contained air supply is required under
OSHA鈥檚 Respiratory Protection Standard (1910.134-1998).
EYE PROTECTION: Splash goggles or safety glasses. If necessary, refer to U.S. OSHA 29 CFR 1910.133,
or appropriate Canadian Standards.
HAND PROTECTION: Wear mechanically-resistant gloves when handling cylinders containing this gas
mixture. If necessary, refer to U.S. OSHA 29 CFR 1910.138, or appropriate Standards of Canada.
BODY PROTECTION: Use body protection appropriate for task. Transfer of large quantities under pressure
may require protective equipment appropriate to the task. If a hazard of injury to the feet exists due to falling
objects, rolling objects, where objects may pierce the soles of the feet or where employee鈥檚 feet may be
exposed to electrical hazards, foot protection should be used, as described in U.S. OSHA 29 CFR
1910.136.
9. PHYSICAL and CHEMICAL PROPERTIES
The following information is for Nitrogen, the main component of this gas mixture:
GAS DENSITY: 0.072 lb/cu ft (1.153 kg/m3) EVAPORATION RATE (nBuAc = 1): Not applicable.
SPECIFIC GRAVITY (air = 1): 0.967 FREEZING POINT: -209.9掳C (-345.8掳F)
SOLUBILITY IN WATER: 0.023 BOILING POINT( @ 1 atmos.): -195.8掳C (-320.4掳F)
SPECIFIC VOLUME (ft3/lb): 13.89
EXPANSION RATIO: Not applicable.
ODOR THRESHOLD: Not applicable. MOLECULAR WEIGHT: 28.01
VAPOR PRESSURE (psia): Not applicable.
COEFFICIENT WATER/OIL DISTRIBUTION: Not applicable.
The following information is pertinent to this product:
APPEARANCE, ODOR AND COLOR: This gas mixture is colorless and odorless.
HOW TO DETECT THIS SUBSTANCE (warning properties): There are no distinct warning properties of
this gas mixture. 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: Stable at standard temperatures and pressures.
DECOMPOSITION PRODUCTS: The thermal decomposition products of this gas mixture are oxides of
carbon.
MATERIALS WITH WHICH SUBSTANCE IS INCOMPATIBLE: The Hydrogen component is incompatible
with strong oxidizers, halogen compounds (e.g. bromine, chlorine, fluorine), lithium, nitrogen trifluoride,
oxygen difluoride. Finely divided platinum and some other metals will cause hydrogen to react explosively
with oxygen in air. The Nitrogen component is inert.
HAZARDOUS POLYMERIZATION: Will not occur.
CONDITIONS TO AVOID: Contact with incompatible materials. Cylinders exposed to high temperatures or
direct flame can rupture or burst.
NITROGEN, HYDROGEN GAS MIXTURE MSDS EFFECTIVE DATE: APRIL 11, 2002
PAGE 5 OF 9 MATH0021
11. TOXICOLOGICAL INFORMATION
TOXICITY DATA: Nitrogen and Hydrogen are simple asphyxiants (SA), which act to displace oxygen in the
environment. No toxicity data are available.
SUSPECTED CANCER AGENT: The components of this gas mixture are not found on the following lists:
FEDERAL OSHA Z LIST, IARC, NTP, CAL/OSHA, and therefore is not considered to be, nor suspected to
be a cancer-causing agent by these agencies.
IRRITANCY OF PRODUCT: This gas mixture is not irritating to contaminated tissue.
SENSITIZATION TO THE PRODUCT: The components of this product are not known to be skin or respiratory
sensitizers.
REPRODUCTIVE TOXICITY INFORMATION: Listed below is information concerning the effects of the
components of this gas mixture on the human reproductive system.
Mutagenicity: This gas mixture is not expected to cause mutagenic effects in humans.
Embryotoxicity: This gas mixture is not expected to cause embryotoxic effects in humans.
Teratogenicity: This gas mixture is not expected to cause teratogenic effects in humans.
Reproductive Toxicity: This gas mixture is not expected to cause adverse reproductive effects in humans.
BIOLOGICAL EXPOSURE INDICES (BEIs): Currently, there are no Biological Exposure Indices (BEIs)
determined for the components of this gas mixture.
12. ECOLOGICAL INFORMATION
ENVIRONMENTAL STABILITY: This gas mixture will be dissipated rapidly in well-ventilated areas.
EFFECT OF MATERIAL ON PLANTS or ANIMALS: Any adverse effect on animals would be related to
oxygen deficient environments.
EFFECT OF CHEMICAL ON AQUATIC LIFE: No an adverse effect from this gas mixture on aquatic life is
expected.
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 Matheson Tri-Gas. 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: Compressed gases, n.o.s.
(Hydrogen, Nitrogen)
HAZARD CLASS NUMBER and DESCRIPTION: 2.2 (Non-Flammable Gas)
UN IDENTIFICATION NUMBER: UN 1956
PACKING GROUP: Not Applicable
D.O.T HAZARD LABEL: Non-Flammable Gas
NORTH AMERICAN EMERGENCY RESPONSE GUIDEBOOK NUMBER (2000): 126
MARINE POLLUTANT: The components of this gas mixture are not classified by the DOT as a Marine
Pollutants (as defined by 49 CFR 172.101, Appendix B).
NITROGEN, HYDROGEN GAS MIXTURE MSDS EFFECTIVE DATE: APRIL 11, 2002
PAGE 6 OF 9 MATH0021
14. TRANSPORTATION INFORMATION (Continued)
SPECIAL SHIPPING INFORMATION: Cylinders should be transported in a secure position, in a well-
ventilated vehicle. The transportation of compressed gas cylinders in automobiles or in closed-body
vehicles present serious safety hazards and should be discouraged.
NOTE: Shipment of compressed gas cylinders which have not been filled with the owner鈥檚 consent is
a violation of Federal law (49 CFR, Part 173.301 (b).
TRANSPORT CANADA TRANSPORTATION OF DANGEROUS GOODS REGULATIONS: This gas mixture
is considered as dangerous goods, per regulations of Transport Canada.
PROPER SHIPPING NAME: Compressed gases, n.o.s.
(Hydrogen, Nitrogen)
HAZARD CLASS NUMBER and DESCRIPTION: 2.2 (Non-Flammable Gas)
UN IDENTIFICATION NUMBER: UN 1956
PACKING GROUP: Not Applicable
HAZARD LABEL: Non-Flammable Gas
NORTH AMERICAN EMERGENCY RESPONSE GUIDEBOOK NUMBER (2000): 126
NOTE: Shipment of compressed gas cylinders via Public Passenger Road Vehicle is a violation of
Canadian law (Transport Canada Transportation of Dangerous Goods Act, 1992).
15. REGULATORY INFORMATION
ADDITIONAL U.S. REGULATIONS:
U.S. SARA REPORTING REQUIREMENTS: No component of this product is 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: There are no specific Threshold Planning Quantities
for the components of this product. The default Federal MSDS submission and inventory requirement
filing threshold of 10,000 lbs (4,540 kg) therefore applies, per 40 CFR 370.20.
U.S. SARA HAZARD CATEGORIES (SECTION 311/312, 40 CFR 370-21): ACUTE: No; CHRONIC: No;
FIRE: No; REACTIVE: No; SUDDEN RELEASE: Yes
U.S. TSCA INVENTORY STATUS: Components of this product are listed on the TSCA Inventory.
U.S. CERCLA REPORTABLE QUANTITY (RQ): Not applicable.
OTHER U.S. FEDERAL REGULATIONS: Hydrogen is subject to the reporting requirements of Section
112(r) of the Clean Air Act. The threshold quantity for this gas is 10,000 lbs (4,540 kg). Hydrogen is
listed as Regulated Substances in quantities of 10,000 lbs (4,540 kg) or greater, per 40 CFR, Part 68 of
the Risk Management for Chemical Accidental Release.
U.S. STATE REGULATORY INFORMATION: Components of this product are covered under some
specific State regulations, as denoted below (other State regulatory lists may exist; individual States
should be contacted regarding full compliance).
California - Permissible Exposure New Jersey - Right to Know Pennsylvania - Hazardous
Limits for Chemical Hazardous Substance List: Substance List: Hydrogen,
Hydrogen, Nitrogen. Nitrogen.
Contaminants: Hydrogen,
Nitrogen.
CALIFORNIA SAFE DRINKING WATER AND TOXIC ENFORCEMENT ACT (PROPOSITION 65): No
component of this product is on the California Proposition 65 lists.
LABELING: Cylinders of this gas mixture should be labeled for precautionary information per the guidelines
of the CGA. Refer to the CGA for further information.
NITROGEN, HYDROGEN GAS MIXTURE MSDS EFFECTIVE DATE: APRIL 11, 2002
PAGE 7 OF 9 MATH0021
15. REGULATORY INFORMATION (Continued)
ADDITIONAL CANADIAN REGULATIONS:
CANADIAN DSL/NDSL INVENTORY STATUS: The components of this product are listed on the DSL
Inventory.
OTHER CANADIAN REGULATIONS: Not applicable.
CANADIAN ENVIRONMENTAL PROTECTION ACT (CEPA) PRIORITIES SUBSTANCES LISTS: The
components of this product are not on the CEPA Priorities Substances Lists.
CANADIAN WHMIS SYMBOLS: This gas mixture would be categorized as a Controlled Product, Hazard
Class: A (compressed gas). The following symbol is required for WHMIS compliance for this gas
mixture.
16. OTHER INFORMATION
CREATION DATE: August 3, 2001 REVISION DATE: April 11, 2002
REVISION HISTORY: Up-date of manufacturer address and phone.
MIXTURES: When two or more gases or liquefied gases are mixed, their hazardous properties may
combine to create additional, unexpected hazards. Obtain and evaluate the safety information for
each component before you use the mixture. Consult an Industrial Hygienist or other trained person
when you make your safety evaluation of the end product. Remember, gases and liquids have
properties which can cause serious injury or death.
Further information can be found in the following pamphlets published by: Compressed Gas Association Inc.
(CGA), 1725 Jefferson Davis Highway, Suite 1004, Arlington, VA 22202-4102. Telephone: (703)
412-0900.
鈥淪afe Handling of Compressed Gases in Containers鈥? (P-1, 1999)
鈥淪afe Handling and Storage of Compressed Gases鈥? (AV-1, 1999)
鈥淗andbook of Compressed Gases鈥? (1992)
PREPARED BY: CHEMICAL SAFETY ASSOCIATES, Inc.
PO Box 3519, La Mesa, CA 91944-3519
800/441-3365
NITROGEN, HYDROGEN GAS MIXTURE MSDS EFFECTIVE DATE: APRIL 11, 2002
PAGE 8 OF 9 MATH0021
16. OTHER INFORMATION (Continued)
DEFINITIONS OF TERMS
A large number of abbreviations and acronyms appear on a MSDS. Some of these which are commonly used include the following:
Flammability Hazard and Reactivity Hazard: Refer to definitions for
CAS #:
鈥淗azardous Materials Identification System鈥?.
This is the Chemical Abstract Service Number which uniquely
identifies each constituent. It is used for computer-related FLAMMABILITY LIMITS IN AIR:
searching. Much of the information related to fire and explosion is derived from
EXPOSURE LIMITS IN AIR: the National Fire Protection Association (NFPA). Flash Point -
Minimum temperature at which a liquid gives off sufficient vapors to
ACGIH - American Conference of Governmental Industrial
form an ignitable mixture with air. Autoignition Temperature: The
Hygienists, a professional association which establishes exposure
minimum temperature required to initiate combustion in air with no
limits.
other source of ignition. LEL - the lowest percent of vapor in air, by
TLV - Threshold Limit Value - an airborne concentration of a
volume, that will explode or ignite in the presence of an ignition
substance which represents conditions under which it is generally
source. UEL - the highest percent of vapor in air, by volume, that
believed that nearly all workers may be repeatedly exposed without
will explode or ignite in the presence of an ignition source.
adverse effect. The duration must be considered, including the 8-
hour Time Weighted Average (TWA), the 15-minute Short Term TOXICOLOGICAL INFORMATION:
Exposure Limit, and the instantaneous Ceiling Level (C). Skin Human and Animal Toxicology: Possible health hazards as
absorption effects must also be considered. derived from select human data, animal studies, or from the results
OSHA - U.S. Occupational Safety and Health Administration. of studies with similar compounds are presented. Definitions of
PEL - Permissible Exposure Limit - This exposure value means some terms used in this section are: LD50 - Lethal Dose (solids &
exactly the same as a TLV, except that it is enforceable by OSHA. liquids) which kills 50% of the exposed animals; LC50 - Lethal
The OSHA Permissible Exposure Limits are based in the 1989 Concentration (gases) which kills 50% of the exposed animals;
PELs and the June, 1993 Air Contaminants Rule (Federal Register: ppm concentration expressed in parts of material per million parts
58: 35338-35351 and 58: 40191). Both the current PELs and the 3
of air or water; mg/m concentration expressed in weight of
vacated PELs are indicated. The phrase, 鈥淰acated 1989 PEL,鈥? is substance per volume of air; mg/kg quantity of material, by weight,
placed next to the PEL which was vacated by Court Order. administered to a test subject, based on their body weight in kg.
IDLH - Immediately Dangerous to Life and Health - This level Other measures of toxicity include TDLo, the lowest dose to cause
represents a concentration from which one can escape within 30- a symptom and TCLo the lowest concentration to cause a
minutes without suffering escape-preventing or permanent injury. symptom; TDo, LDLo, and LDo, or TC, TCo, LCLo, and LCo, the
NIOSH is the National Institute of Occupational Safety and Health, lowest dose (or concentration) to cause lethal or toxic effects.
which is the research arm of the U.S. Occupational Safety and Cancer Information: The sources are: IARC - the International
Health Administration (OSHA). NIOSH issues exposure guidelines Agency for Research on Cancer; NTP - the National Toxicology
called Recommended Exposure Levels (RELs). When no Program, RTECS - the Registry of Toxic Effects of Chemical
exposure guidelines are established, an entry of NE is made for Substances. OSHA and CAL/OSHA. IARC and NTP rate
reference. chemicals on a scale of decreasing potential to cause human
HAZARD RATINGS: cancer with rankings from 1 to 4. Subrankings (2A, 2B, etc.) are
HAZARDOUS MATERIALS IDENTIFICATION SYSTEM: This rating also used. Other Information: BEI - ACGIH Biological Exposure
system was developed by the National Paint and Coating Indices, represent the levels of determinants which are most likely
Association and has been adopted by industry to identify the to be observed in specimens collected from a healthy worker who
degree of chemical hazards. Health Hazard: 0 (minimal acute or has been exposed to chemicals to the same extent as a worker
chronic exposure hazard); 1 (slight acute or chronic exposure with inhalation exposure to the TLV. Ecological Information: EC
hazard); 2 (moderate acute or significant chronic exposure is the effect concentration in water. BCF = Bioconcentration
hazard); 3 (severe acute exposure hazard; onetime overexposure Factor, which is used to determine if a substance will concentrate
can result in permanent injury and may be fatal); 4 (extreme acute in lifeforms which consume contaminated plant or animal matter.
exposure hazard; onetime overexposure can be fatal). TLm = median threshold limit; Coefficient of Oil/Water Distribution
Flammability Hazard: 0 (minimal hazard); 1 (materials that require is represented by log Kow or log Koc and is used to assess a
substantial pre-heating before burning); 2 (combustible liquid or substance鈥檚 behavior in the environment.
solids; liquids with a flash point of 38-93掳C [100-200掳F]); 3 (Class REGULATORY INFORMATION:
IB and IC flammable liquids with flash points below 38掳C [100掳F]); U.S. and CANADA: This section explains the impact of various laws
4 (Class IA flammable liquids with flash points below 23掳C [73掳F] and regulations on the material. EPA is the U.S. Environmental
and boiling points below 38掳C [100掳F]. Reactivity Hazard: 0 Protection Agency. WHMIS is the Canadian Workplace Hazardous
(normally stable); 1 (material that can become unstable at elevated Materials Information System. DOT and TC are the U.S.
temperatures or which can react slightly with water); 2 (materials Department of Transportation and the Transport Canada,
that are unstable but do not detonate or which can react violently respectively. Superfund Amendments and Reauthorization Act
with water); 3 (materials that can detonate when initiated or which (SARA); the Canadian Domestic/Non-Domestic Substances List
can react explosively with water); 4 (materials that can detonate at (DSL/NDSL); the U.S. Toxic Substance Control Act (TSCA);
normal temperatures or pressures). PPE Rating B: Hand and eye Marine Pollutant status according to the DOT; the Comprehensive
protection is required for routine chemical use. Environmental Response, Compensation, and Liability Act
NATIONAL FIRE PROTECTION ASSOCIATION: Health Hazard: 0 (CERCLA or Superfund); and various state regulations. This
(material that on exposure under fire conditions would offer no section also includes information on the precautionary warnings
hazard beyond that of ordinary combustible materials); 1 (materials which appear on the material鈥檚 package label.
that on exposure under fire conditions could cause irritation or
minor residual 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 could cause death or
major residual injury).
NITROGEN, HYDROGEN GAS MIXTURE MSDS EFFECTIVE DATE: APRIL 11, 2002
PAGE 9 OF 9 MATH0021
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