ETHYL MERCAPTAN (ALL GRADES)
Material Safety Data Sheet
Arkema Inc.
1 PRODUCT AND COMPANY IDENTIFICATION
EMERGENCY PHONE NUMBERS:
Thio and Fine Chemicals
Chemtrec: (800) 424-9300 (24hrs) or (703) 527-3887
Arkema Inc.
Medical: Rocky Mountain Poison Control Center
2000 Market Street
(866) 767-5089 (24Hrs)
Philadelphia, PA 19103
Information Telephone Numbers Phone Number Available Hrs
Customer Service 1-800-628-4453 8:30 to 5:30 EST
Product Name ETHYL MERCAPTAN (ALL GRADES)
Product Synonym(s)
See Section 16 for Applicable Grade Names
Chemical Family Alkyl Mercaptan
Chemical Formula C2H5SH
Chemical Name Ethanethiol
EPA Reg Num
Product Use Chemical Intermediate
2 COMPOSITION / INFORMATION ON INGREDIENTS
Ingredient Name CAS RegistryNumber Typical % OSHA
Ethyl mercaptan 75-08-1 99.3% Y
The substance(s) marked with a "Y" in the OSHA column, are identified as hazardous chemicals according to the
criteria of the OSHA Hazard Communication Standard (29 CFR 1910.1200)
This material is classified as hazardous under Federal OSHA regulation.
The components of this product are all on the TSCA Inventory list.
3 HAZARDS IDENTIFICATION
Emergency Overview
Water white liquid, gassy or mercaptan odor
DANGER!
EXTREMELY FLAMMABLE LIQUID AND VAPOR. VAPOR MAY CAUSE FLASH FIRE.
CAUSES EYE AND SKIN IRRITATION.
CAUSES RESPIRATORY TRACT IRRITATION.
MAY BE HARMFUL IF SWALLOWED.
MAY CAUSE NAUSEA, HEADACHE OR DIZZINESS.
Potential Health Effects
Inhalation and skin contact are expected to be the primary routes of occupational exposure to this material. Based on
single exposure animal tests, it is considered to be slightly toxic if swallowed or inhaled, no more than slightly toxic if
absorbed through skin, and slightly irritating to eyes and skin. This material has a strong objectionable odor that may
cause nausea, headache, or dizziness. The odor threshold is approximately 1 ppb. High vapor concentrations may be
irritating to the eyes and respiratory tract, and may result in central nervous system (CNS) effects such as headache,
dizziness, nausea, drowsiness and, in severe exposures, loss of consciousness.
Product Code: 000901 Page 1
Revision: 9 Issued: 07 AUG 2007 of 7
ETHYL MERCAPTAN (ALL GRADES)
Material Safety Data Sheet
Arkema Inc.
4 FIRST AID MEASURES
IF IN EYES, immediately flush with plenty of water for at least 15 minutes. Get medical attention.
IF ON SKIN, immediately flush with plenty of water. Remove contaminated clothing and shoes. Get medical
attention. Wash clothing before reuse. Thoroughly clean shoes before reuse.
IF SWALLOWED, do NOT induce vomiting. Give water to drink. Get medical attention immediately. NEVER
GIVE ANYTHING BY MOUTH TO AN UNCONSCIOUS PERSON.
IF INHALED, remove to fresh air. If not breathing, give artificial respiration. If breathing is difficult, give
oxygen. Get medical attention.
5 FIRE FIGHTING MEASURES
Fire and Explosive Properties
Auto-Ignition Temperature 300 C (572 F)
Flash Point -54 C (CC) Flash Point Method
Flammable Limits- Upper 18
2.8
Lower
Extinguishing Media
Use water spray, carbon dioxide, foam or dry chemical.
Fire Fighting Instructions
Use water spray to cool containers exposed to fire. Contain run-off from fire. Fire fighters and others who may
be exposed to products of combustion should wear full fire fighting turn out gear (full Bunker Gear) and self-
contained breathing apparatus (pressure demand NIOSH approved or equivalent). Fire fighting equipment
should be thoroughly decontaminated after use.
Fire and Explosion Hazards
When burned, the following hazardous products of combustion can occur:
Oxides of carbon
Sulfur oxides
Hydrogen sulfide
6 ACCIDENTAL RELEASE MEASURES
In Case of Spill or Leak
Ventilate the area. Contain spill by building a dike using absorbent material. Consult with environmental
engineer or professional to determine if neutralization is appropriate and for handling procedures for residual
materials. Do not use solid bleach for neutralization, as fire or violent reaction can occur. Collect the liquid
and solid absorbent into a drum approved for waste disposal. Flush area with water. Consult a regulatory
specialist to determine appropriate state or local reporting requirements, for assistance in waste
characterization and/or hazardous waste disposal and other requirements listed in pertinent environmental
permits.
7 HANDLING AND STORAGE
Handling
Keep away from heat, sparks and flame.
Keep container closed.
Product Code: 000901 Page 2
Revision: 9 Issued: 07 AUG 2007 of 7
ETHYL MERCAPTAN (ALL GRADES)
Material Safety Data Sheet
Arkema Inc.
7 HANDLING AND STORAGE
Use only with adequate ventilation.
Avoid breathing vapor.
Avoid contact with eyes, skin and clothing.
Do not taste or swallow.
CONTAINER HAZARDOUS WHEN EMPTY. Emptied container retains vapor and product residue. Follow
labeled warnings even after container is emptied. RESIDUAL VAPORS MAY EXPLODE ON IGNITION. DO
NOT CUT, DRILL GRIND OR WELD ON OR NEAR THIS CONTAINER. Improper disposal or reuse of this
container may be dangerous and/or illegal.
Storage
Store in well ventilated area away from heat and sources of ignition such as flame, sparks and static
electricity. Ensure that all storage and handling equipment is properly rated, grounded and installed to satisfy
electrical classification requirements. Static electricity may accumulate and create a fire hazard. All storage
containers, including containers such as drums, cylinders and IBC鈥檚, must be bonded and grounded during
filling and emptying operations. Store away from oxidizers and reactive materials. Keep container tightly
closed. Observe all federal, state and local regulations and National Fire Protection Association (NFPA)
Codes which pertain to the specific local conditions of storage and use, including OSHA 29 CFR 1910.106
and NFPA 30, 70, 77, and 497.
8 EXPOSURE CONTROLS / PERSONAL PROTECTION
Engineering Controls
Investigate engineering techniques to reduce exposures below airborne exposure limits. Provide ventilation
if necessary to control exposure levels below airborne exposure limits (see below). If practical, use local
mechanical exhaust ventilation at sources of air contamination such as open process equipment. Consult
ACGIH ventilation manual or NFPA Standard 91 for design of exhaust systems.
Eye / Face Protection
Where there is potential for eye contact, wear chemical goggles and have eye flushing equipment available.
Skin Protection
Wear appropriate chemical resistant protective clothing and chemical resistant gloves to prevent skin
contact. Consult glove manufacturer to determine appropriate type glove material for given application.
Wear chemical goggles, a face shield, and chemical resistant clothing such as a rubber apron when
splashing may occur. Rinse immediately if skin is contaminated. Remove contaminated clothing promptly
and wash before reuse. Clean protective equipment before reuse. Provide a safety shower at any location
where skin contact can occur. Wash skin thoroughly after handling.
Respiratory Protection
Avoid breathing vapor or mist. When airborne exposure limits are exceeded (see below), use NIOSH
approved respiratory protection equipment appropriate to the material and/or its components. Full facepiece
equipment is recommended and, if used, replaces need for face shield and chemical goggles. Consult
respirator manufacturer to determine appropriate type equipment for given application. Observe respirator
use limitations specified by NIOSH or the manufacturer. For emergency and other conditions where
exposure limit may be significantly exceeded, use an approved full face positive-pressure, self-contained
breathing apparatus or positive-pressure airline with auxiliary self-contained air supply. Respiratory
protection programs must comply with 29 CFR 搂 1910.134.
Product Code: 000901 Page 3
Revision: 9 Issued: 07 AUG 2007 of 7
ETHYL MERCAPTAN (ALL GRADES)
Material Safety Data Sheet
Arkema Inc.
Airborne Exposure Guidelines for Ingredients
Exposure Limit Value
Ethyl mercaptan
ACGIH TWA - 0.5 ppm 1.3 mg/m3
OSHA Ceiling PEL - 10 ppm 25 mg/m3
-Only those components with exposure limits are printed in this section.
-Skin contact limits designated with a "Y" above have skin contact effect. Air sampling alone is insufficient to accurately quantitate
exposure. Measures to prevent significant cutaneous absorption may be required.
-ACGIH Sensitizer designator with a value of "Y" above means that exposure to this material may cause allergic reactions.
-WEEL-AIHA Sensitizer designator with a value of "Y" above means that exposure to this material may cause allergic skin reactions.
9 PHYSICAL AND CHEMICAL PROPERTIES
Water white liquid, gassy or mercaptan odor
Appearance/Odor
pH
Specific Gravity 0.839 @ 20 C
Vapor Pressure 535 hPa @ 20 C Calculated
Vapor Density 2.1
Melting Point -148 C
Freezing Point -148 C
Boiling Point 35 C
Solubility In Water 6.8 g/l @ 20 C
Solubility in Other Materials Alcohols, hydrocarbons
Evaporation Rate NE
Percent Volatile 100
Viscosity 0.29 cP @ 20 C
Molecular Weight 62.13
n-Octanol/Water Partition Coefficient 1.26 @ C Calculated
Other Physical Data Odor threshold: 0.4 ppb (approximately)
Henry鈥檚 constant: 455.8 Pa m3/mole
Refractive index: 1.431 @ 20 C
Critical pressure: Pc = 54.2 bar
Critical temperature: Tc = 225.5 C
10 STABILITY AND REACTIVITY
Stability
This material is chemically stable under normal and anticipated storage and handling conditions.
Incompatibility
Avoid contact with strong oxidizing agents (hydrogen peroxide, nitric acid, hypochlorites) as a violent reaction
may occur.
Hazardous Decomposition Products
None known.
11 TOXICOLOGICAL INFORMATION
Toxicological Information
Data on this material and/or its components are summarized below.
Product Code: 000901 Page 4
Revision: 9 Issued: 07 AUG 2007 of 7
ETHYL MERCAPTAN (ALL GRADES)
Material Safety Data Sheet
Arkema Inc.
11 TOXICOLOGICAL INFORMATION
Single exposure (acute) studies indicate:
Oral - Slightly Toxic to Rats (LD50 682 mg/kg)
Dermal - No More than Slightly Toxic to Rabbits (LD50 >2,000 mg/kg)
Inhalation - Slightly Toxic to Rats (4-hr LC50 4,420 ppm)
Eye Irritation - Slightly Irritating to Rabbits
Skin Irritation - Slightly Irritating to Rabbits (4-hr exposure)
Acute inhalation by laboratory animals produces restlessness, irritation, increased respiration, loss of
coordination, muscular weakness progressing to paralysis, cyanosis (blue color due to low oxygen levels),
convulsions and death due to respiratory depression. Repeated inhalation exposure was reported to cause
minor cardiovascular disorders in rabbits and an increase in nervous excitability in rats, but no morphological
organ changes at study termination. Long-term repeated inhalation exposures in rats and rabbits was reported
to cause cardiovascular effects, a decrease in the number of red blood cells, decreased gas exchange and
increased nervous excitability. No genetic changes were observed in tests using bacteria. Both positive and
equivocal responses have been reported in tests using animal cells.
12 ECOLOGICAL INFORMATION
Ecotoxicological Information
Data on this material and/or its components are summarized below.
This material is highly toxic to Daphnia magna (24-hr EC50 0.38 mg/l). A concentration of 20 ppm produced
death in fish (Kuhlia) within 2-3 minutes. It did not repel sunfish at a dose of 20 mg/l.
Chemical Fate Information
Data on this material and/or its components are summarized below.
The estimated threshold level in water that can cause tainting of fish flesh and other aquatic organisms was
240 ug/l. This material is not readily biodegradable (27.1% after 28-days, OECD 301D). It is slightly adsorptive
(log Koc 1.53) and has a half-life in air of 4.8 hours. The half-life for evaporation was 2.5 hours (river) to 29
hours (pond). The log Pow is 1.2
13 DISPOSAL CONSIDERATIONS
Waste Disposal
Incineration is the recommended method for disposal observing all local, state and federal regulations. Note:
Chemical additions to, processing of, or otherwise altering this material may make this waste management
information incomplete, inaccurate, or otherwise inappropriate. Furthermore, state and local waste disposal
requirements may be more restrictive or otherwise different from federal laws and regulations. Take
appropriate measures to prevent release to the environment.
Product Code: 000901 Page 5
Revision: 9 Issued: 07 AUG 2007 of 7
ETHYL MERCAPTAN (ALL GRADES)
Material Safety Data Sheet
Arkema Inc.
14 TRANSPORT INFORMATION
DOT Name Ethyl Mercaptan
DOT Technical Name
DOT Hazard Class 3
UN Number 2363
DOT Packing Group PG I
RQ No
Marine Pollutant Yes
15 REGULATORY INFORMATION
Hazard Categories Under Criteria of SARA Title III Rules (40 CFR Part 370)
Immediate (Acute) Health Y Fire Y
Reactive
Delayed (Chronic) Health N N
Sudden Release of Pressure N
The components of this product are all on the TSCA Inventory list.
Ingredient Related Regulatory Information:
CERCLA RQ SARA TPQ
SARA Reportable Quantities
Ethyl mercaptan 100 LBS
Massachusetts Right to Know
This product does contain the following chemicals(s), as indicated below, currently on the Massachusetts Right to Know Substance
List.
Ethyl mercaptan
New Jersey Right to Know
This product does contain the following chemical(s), as indicated below, currently on the New Jersey Right-to-Know Substances List.
Ethyl mercaptan
Pennsylvania Right to Know
This product does contain the following chemical(s), as indicated below, currently on the Pennsylvania Hazardous Substance List.
Ethyl mercaptan
16 OTHER INFORMATION
Revision Information
Revision Number 9
07 AUG 2007
Revision Date
Supercedes Revision Dated 30-DEC-2005
Revision Summary
Added Grade name to section 16.
Key
NE= Not Established NA= Not Applicable (R) = Registered Trademark
Product Code: 000901 Page 6
Revision: 9 Issued: 07 AUG 2007 of 7
ETHYL MERCAPTAN (ALL GRADES)
Material Safety Data Sheet
Arkema Inc.
Miscellaneous
This MSDS covers the following grades:
Ethyl Mercaptan Synthesis Grade
Odorant Grade
Arkema Inc. believes that the information and recommendations contained herein (including data and
statements) are accurate as of the date hereof. NO WARRANTY OF FITNESS FOR ANY PARTICULAR
PURPOSE, WARRANTY OF MERCHANTABILITY, OR ANY OTHER WARRANTY, EXPRESSED OR
IMPLIED, IS MADE CONCERNING THE INFORMATION PROVIDED HEREIN. The information provided
herein relates only to the specific product designated and may not be valid where such product is used in
combination with any other materials or in any process. Further, since the conditions and methods of use are
beyond the control of Arkema Inc., Arkema Inc. expressly disclaims any and all liability as to any results
obtained or arising from any use of the product or reliance on such information.
Product Code: 000901 Page 7
Revision: 9 Issued: 07 AUG 2007 of 7
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