MSDS Name:   Ethanethiol
Synonym:   Ethyl mercaptan; Ethyl hydrosulfide; Ethyl sulfhydrate; Ethyl thioalcohol.
Company:   AboutChem.com

**** SECTION 2 - COMPOSITION, INFORMATION ON INGREDIENTS ****

+----------------+--------------------------------------+----------+-----------+
| CAS# | Chemical Name | % | EINECS# |
|----------------|--------------------------------------|----------|-----------|
| 75-08-1 |Ethyl mercaptan | 100 | 200-837-3 |
+----------------+--------------------------------------+----------+-----------+
Hazard Symbols: XN F N
Risk Phrases: 11 20 50/53

**** SECTION 3 - HAZARDS IDENTIFICATION ****

EMERGENCY OVERVIEW
Highly flammable. Harmful by inhalation. Very toxic to aquatic
organisms, may cause long-term adverse effects in the aquatic
environment.Water-reactive.

Potential Health Effects
Eye:
Causes eye irritation.
Skin:
Causes skin irritation. Prolonged and/or repeated contact may cause
irritation and/or dermatitis.
Ingestion:
May cause severe and permanent damage to the digestive tract. Causes
gastrointestinal irritation with nausea, vomiting and diarrhea. May
cause kidney damage. May be harmful if swallowed.
Inhalation:
Inhalation of high concentrations may cause central nervous system
effects characterized by nausea, headache, dizziness, unconsciousness
and coma. Causes respiratory tract irritation. May cause irritation
of the respiratory tract with burning pain in the nose and throat,
coughing, wheezing, shortness of breath and pulmonary edema.
Chronic:
May cause kidney injury.

**** SECTION 4 - FIRST AID MEASURES ****

Eyes:
Immediately flush eyes with plenty of water for at least 15 minutes,
occasionally lifting the upper and lower eyelids. Get medical aid.
Skin:
Get medical aid. Immediately flush skin with plenty of water for at
least 15 minutes while removing contaminated clothing and shoes.
Ingestion:
If victim is conscious and alert, give 2-4 cupfuls of milk or water.
Never give anything by mouth to an unconscious person. Get medical
aid immediately.
Inhalation:
Get medical aid immediately. Remove from exposure and move to fresh
air immediately. If not breathing, give artificial respiration. If
breathing is difficult, give oxygen.
Notes to Physician:

**** SECTION 5 - FIRE FIGHTING MEASURES ****

General Information:
As in any fire, wear a self-contained breathing apparatus in
pressure-demand, MSHA/NIOSH (approved or equivalent), and full
protective gear. During a fire, irritating and highly toxic gases
may be generated by thermal decomposition or combustion.
Extinguishing Media:
Do NOT use water directly on fire. Use water spray to cool
fire-exposed containers. Use foam, dry chemical, or carbon dioxide.

**** SECTION 6 - ACCIDENTAL RELEASE MEASURES ****

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. Clean up spills immediately,
observing precautions in the Protective Equipment section. Scoop up
with a nonsparking tool, then place into a suitable container for
disposal. Remove all sources of ignition. Provide ventilation.

**** SECTION 7 - HANDLING and STORAGE ****

Handling:
Wash thoroughly after handling. Wash hands before eating. Remove
contaminated clothing and wash before reuse. Use only in a
well-ventilated area. Avoid contact with eyes, skin, and clothing.
Keep away from heat, sparks and flame. Avoid ingestion and
inhalation.
Storage:
Keep away from heat, sparks, and flame. Keep away from sources of
ignition. Store in a cool, dry place. Store in a tightly closed
container. Flammables-area.

**** SECTION 8 - EXPOSURE CONTROLS, PERSONAL PROTECTION ****

Engineering Controls:
Use process enclosure, local exhaust ventilation, or other
engineering controls to control airborne levels below recommended
exposure limits. Facilities storing or utilizing this material should
be equipped with an eyewash facility and a safety shower.
Personal Protective Equipment

Eyes:
Wear chemical goggles.
Skin:
Wear appropriate protective gloves to prevent skin
exposure.
Clothing:
Wear appropriate protective clothing to prevent skin
exposure.
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.

**** SECTION 9 - PHYSICAL AND CHEMICAL PROPERTIES ****

Physical State: Liquid
Color: colorless
Odor: Garlic-like odor.
pH: Not available.
Vapor Pressure: Not available.
Viscosity: Not available.
Boiling Point: 35 deg C
Freezing/Melting Point: -144 deg C
Autoignition Temperature: 572 deg F ( 300.00 deg C)
Flash Point: -0.4 deg F ( -18.00 deg C)
Explosion Limits, lower: 2.8
Explosion Limits, upper: 18.0
Decomposition Temperature: Not available.
Solubility in water: Slightly soluble in water.
Specific Gravity/Density: 0.84
Molecular Formula: C2H6S
Molecular Weight: 62.13

**** SECTION 10 - STABILITY AND REACTIVITY ****

Chemical Stability:
Stable at room temperature in closed containers under normal storage
and handling conditions.
Conditions to Avoid:
High temperatures, mechanical shock, incompatible materials, ignition
sources, excess heat, exposure to moist air or water.
Incompatibilities with Other Materials:
Keep away from oxidizing agents and acids. Will react with water or
steam to produce toxic and flammable vapors. When in contact with
acids, it will release sulfur oxides just as occurs when heat to
decomposition. Violent reaction with hypochlorite.
Hazardous Decomposition Products:
Carbon monoxide, oxides of sulfur, irritating and toxic fumes and
gases, carbon dioxide.
Hazardous Polymerization: Has not been reported

**** SECTION 11 - TOXICOLOGICAL INFORMATION ****

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:
Ethyl mercaptan -
Not listed by ACGIH, IARC, or NTP.
See actual entry in RTECS for complete information.

**** SECTION 12 - ECOLOGICAL INFORMATION ****



**** SECTION 13 - DISPOSAL CONSIDERATIONS ****

Products which are considered hazardous for supply are classified as Special
Waste and the disposal of such chemicals is covered by regulations which may
vary according to location. Contact a specialist disposal company or the local
waste regulator for advice. Empty containers must be decontaminated before
returning for recycling.

**** SECTION 14 - TRANSPORT INFORMATION ****

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:

**** SECTION 15 - REGULATORY INFORMATION ****

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 Canada's DSL List.
CAS# 75-08-1 is listed on Canada's 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.

**** SECTION 16 - ADDITIONAL INFORMATION ****

MSDS Creation Date: 9/02/1997 Revision #4 Date: 3/18/2003

The information above is believed to be accurate and represents the best
information currently available to us. However, we make no warranty of
merchantability or any other warranty, express or implied, with respect to
such information, and we assume no liability resulting from its use. Users
should make their own investigations to determine the suitability of the
information for their particular purposes. In no way shall the company be
liable for any claims, losses, or damages of any third party or for lost
profits or any special, indirect, incidental, consequential or exemplary
damages, howsoever arising, even if the company has been advised of
the possibility of such damages.
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