MSDS Name:ETHANETHIOL 97%
Synonym:Ethyl mercapta

EMERGENCY OVERVIEW
Highly flammable. Harmful by inhalation. Very toxic to aquatic organisms, may cause long-term adverse effects in the aquatic environment.Highly flammable.Harmful.
Potential Health Effects
Eye:
May cause eye irritation.
Skin:
May cause skin irritation.
Ingestion:
Harmful if swallowed. May cause headache.
Inhalation:
Harmful if inhaled. May cause narcotic effects in high concentration.
Chronic:
Not available.

Eyes: Flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids.
Skin:
Flush skin with plenty of water for at least 15 minutes while removing contaminated clothing and shoes.
Ingestion:
Get medical aid. Wash mouth out with water.
Inhalation:
Remove from exposure and move to fresh air immediately.
Notes to Physician:

General Information:
As in any fire, wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. Will burn if involved in a fire.
Extinguishing Media:
Use water spray to cool fire-exposed containers. Use foam, dry chemical, or carbon dioxide. Water may be ineffective.

General Information: Use proper personal protective equipment as indicated in Section 8.
Spills/Leaks:
Absorb spill with inert material (e.g. vermiculite, sand or earth), then place in suitable container. Remove all sources of ignition.

Handling:
Use spark-proof tools and explosion proof equipment. Avoid contact with skin and eyes. Do not breathe dust, vapor, mist, or gas. Use only in a chemical fume hood. This product may be under pressure; cool before opening.
Storage:
Keep away from sources of ignition. Store in a cool, dry place.
Store in a tightly closed container. Flammables-area.

Engineering Controls:
Facilities storing or utilizing this material should be equipped with an eyewash facility and a safety shower.
Personal Protective Equipment Eyes: Not available.
Skin:
Wear appropriate protective gloves to prevent skin exposure.
Clothing:
Wear a chemical apron.
Respirators:
Follow the OSHA respirator regulations found in 29 CFR 1910.134 or European Standard EN 149. Always use a NIOSH or European Standard EN 149 approved respirator when necessary.

Physical State: Liquid
Color: Not available.
Odor: stench
pH: Not available.
Vapor Pressure: 442 mm Hg @20 deg C
Viscosity: cP 20 deg C
Boiling Point: 35 deg C @ 760.00mm Hg
Freezing/Melting Point: -148 deg C
Autoignition Temperature: 298 deg C ( 568.40 deg F)
Flash Point: -45 deg C ( -49.00 deg F)
Explosion Limits, lower: 2.80 vol %
Explosion Limits, upper: 18.20 vol %
Decomposition Temperature:
Solubility in water: 6.76 G/L (20C)
Specific Gravity/Density: .8390g/cm3
Molecular Formula: C2H6S
Molecular Weight: 62.13

Chemical Stability:
Stable under normal temperatures and pressures.
Conditions to Avoid:
Incompatible materials.
Incompatibilities with Other Materials:
Oxidizing agents, bases, metals, calcium hypochlorite.
Hazardous Decomposition Products:
Carbon monoxide, oxides of sulfur, carbon dioxide.
Hazardous Polymerization: Has not been reported.

RTECS#:
CAS# 75-08-1: KI9625000 LD50/LC50:
CAS# 75-08-1: Draize test, rabbit, eye: 84 mg; Draize test, rabbit, eye: 100 mg/24H Moderate; Draize test, rabbit, skin: 500 mg/24H Mild; Inhalation, mouse: LC50 = 2770 ppm/4H; Inhalation, rat: LC50 = 4420 ppm/4H; Oral, rat: LD50 = 682 mg/kg.
Carcinogenicity:
ETHANETHIOL, 97% - Not listed by ACGIH, IARC, or NTP.
See actual entry in RTECS for complete information.

Dispose of in a manner consistent with federal, state, and local regulations.

IATA
Shipping Name: ETHYL MERCAPTAN
Hazard Class: 3
UN Number: 2363
Packing Group: I
IMO
Shipping Name: ETHYL MERCAPTAN
Hazard Class: 3
UN Number: 2363
Packing Group: I
RID/ADR
Shipping Name: ETHYL MERCAPTAN
Hazard Class: 3
UN Number: 2363
Packing group: I

European/International Regulations
European Labeling in Accordance with EC Directives
Hazard Symbols: XN F N
Risk Phrases:
R 11 Highly flammable.
R 20 Harmful by inhalation.
R 50/53 Very toxic to aquatic organisms, may cause
long-term adverse effects in the aquatic environment.
Safety Phrases:
S 16 Keep away from sources of ignition - No
smoking.
S 25 Avoid contact with eyes.
S 60 This material and its container must be
disposed of as hazardous waste.
S 61 Avoid release to the environment. Refer to
special instructions/safety data sheets.
WGK (Water Danger/Protection)
CAS# 75-08-1: No information available.
United Kingdom Occupational Exposure Limits
CAS# 75-08-1: OES-United Kingdom, TWA 0.5 ppm TWA; 1.3 mg/m3 TWA
CAS# 75-08-1: OES-United Kingdom, STEL 2 ppm STEL; 5.2 mg/m3 STEL
United Kingdom Maximum Exposure Limits

Canada
CAS# 75-08-1 is listed on Canadas DSL List.
CAS# 75-08-1 is listed on Canadas Ingredient Disclosure List.
Exposure Limits
CAS# 75-08-1: OEL-AUSTRALIA:TWA 0.5 ppm (1 mg/m3)
OEL-BELGIUM:TWA 0.5 ppm (1.3 mg/m3)
OEL-DENMARK:TWA 0.5 ppm (1 mg/m3)
OEL-FINLAND:STEL 0.5 ppm (1.3 mg/m3)
OEL-FRANCE:TWA 0.5 ppm (1 mg/m3)
OEL-GERMANY:TWA 0.5 ppm (1 mg/m3)
OEL-HUNGARY:STEL 1 mg/m3
OEL-THE NETHERLANDS:TWA 0.5 ppm (1 mg/m3)
OEL-THE PHILIPPINES:TWA 10 ppm (25 mg/m3)
OEL-RUSSIA:STEL 1 mg/m3;Skin
OEL-SWITZERLAND:TWA 0.5 ppm (1.3 mg/m3);STEL 1 pp (2.6 mg/m3)
OEL-THAILAND:TWA 10 ppm (25 mg/m3)
OEL-TURKEY:TWA 10 ppm (25 mg/m3)
OEL-UNITED KINGDOM:TWA 0.5 ppm (1 mg/m3);STEL 2 ppm (3 mg/m3)
OEL IN BULGARIA, COLOMBIA, JORDAN, KOREA check ACGIH TLV
OEL IN NEW ZEALAND, SINGAPORE, VIETNAM check ACGI TLV
US FEDERAL
TSCA
CAS# 75-08-1 is listed on the TSCA inventory.