Product ID:ETHYL MERCAPTAN
MSDS Date:Jan 24 1989
MSDS Number: EEEGK
Kit Part:=== Responsible Party ===
Company Name:MATHESON TRI-GAS, INC.
Address:959 ROUTE 46 EAST
City:PARSIPPANY
State:NJ
ZIP:07054-0624
Country:US
Info Phone Num:(USA) 973-257-1100, (WHITBY) 905-668-3570, (EDMONTON)
780-471-4036
Chemtrec Ind/Phone:18004249300

Telephone: (USA) 973-257-1100, (WHITBY) 905-668-3570, (EDMONTON)

ETHYL MERCAPTAN

CAS: 75-08-1

Fraction By Weight: 100.0%

Reports of Carcinogenicity:NTP:No IARC:No OSHA:No
Health Hazards Acute and Chronic:INHALATION: SHORT TERM EXPOSURE:
irritation, nausea, difficulty breathing, headache, symptoms of
drunkenness, bluish skin color, convulsions, coma LONG TERM
EXPOSURE: no information on significant adverse effects SKIN
CONTACT: SHORT TERM EXPOSURE: irritation LONG TERM EXPOSURE: no
information on significant adverse effects EYE CONTACT: SHORT TERM
EXPOSURE: irritation LONG TERM EXPOSURE: no information on
significant adverse effects INGESTION: SHORT TERM EXPOSURE: sore
throat, nausea, stomach pain LONG TERM EXPOSURE: no information on
significant adverse effects
Medical Cond Aggravated by Exposure:

First Aid: INHALATION: If adverse effects occur, remove to
uncontaminated area. Give artificial respiration if not breathing.
Get immediate medical attention. SKIN CONTACT: Wash skin with soap
and water for at least 15 minutes while removing contaminated
clothing and shoes. Get medical attention, if needed. Thoroughly
clean and dry contaminated clothing and shoes before reuse. EYE
CONTACT: Flush eyes with plenty of water for at least 15 minutes.
Then get immediate medical attention. INGESTION: Never make an
unconscious person vomit or drink fluids. Give sodium bicarbonate
solution. When vomiting occurs, keep head lower than hips to help
prevent aspiration. If person is unconscious, turn head to side.
Get medical attention immediately. ANTIDOTE: amyl nitrite,
inhalation; sodium nitrite, intravenous; pyridoxine, intravenous;
urea, intravenous. CAUTION! Get medical attention immediately.

Flash Point:-54.9 F (-48.3 C) (CC)
Autoignition Temp:572 F (300 C)
Lower Limits:2.8%
Upper Limits:18%
Extinguishing Media:alcohol resistant foam, carbon dioxide, regular dry
chemical, water Large fires: Use alcohol-resistant foam or flood
with fine water spray.
Fire Fighting Procedures:Move container from fire area if it can be
done without risk. Cool containers with water spray until well
after the fire is out. Stay away from the ends of tanks. For fires
in cargo or storage area: Cool containers with water from unmanned
hose holder or monitor nozzles until well after fire is out. If
this is impossible then take the following precautions: Keep
unnecessary people away, isolate hazard area and deny entry. Let
the fire burn. Withdraw immediately in case of rising sound from
venting safety device or any discoloration of tanks due to fire.
For tank, rail car or tank truck: Evacuation radius: 800 meters
(1/2 mile). Water may be ineffective.
Unusual Fire/Explosion Hazard:Severe fire hazard. Moderate explosion
hazard. Vapor/air mixtures are explosive. The vapor is heavier than
air. Vapors or gases may ignite at distant ignition sources and
flash back.

Spill Release Procedures:Avoid heat, flames, sparks and other sources
of ignition. Stop leak if possible without personal risk. Reduce
vapors with water spray. Small spills: Absorb with sand or other
non-combustible material. Collect spilled material in appropriate
container for disposal. Large spills: Dike for later disposal.
Remove sources of ignition. Keep unnecessary people away, isolate
hazard area and deny entry.
Neutralizing Agent:

Handling and Storage Precautions:Store and handle in accordance with
all current regulations and standards. Subject to storage
regulations: U.S. OSHA 29 CFR 1910.106. Grounding and bonding
required. Keep separated from incompatible substances.
Other Precautions:

Respiratory Protection:The following respirators and maximum use
concentrations are drawn from NIOSH and/or OSHA. 5 ppm Any chemical
cartridge respirator with organic vapor cartridge(s). Any
supplied-air respirator. 12.5 ppm Any supplied-air respirator. Any
powered, air-purifying respirator with organic vapor cartridge(s).
25 ppm Any chemical cartridge respirator with a full facepiece and
organic vapor cartridge(s). Any air-purifying respirator with a
full facepiece and an organic vapor canister. Any supplied-air
respirator with a full facepiece. Any powered, air-purifying
respirator with a full facepiece and organic vapor cartridge(s).
Any self-contained breathing apparatus with a full facepiece. Any
supplied-air respirator with a full facepiece. 500 ppm Any
supplied-air respirator operated in a pressure-demand or other
positive-pressure mode. Escape - Any air-purifying respirator with
a full facepiece and an organic vapor canister. Any appropriate
escape-type, self-contained breathing apparatus. For Unknown
Concentrations or Immediately Dangerous to Life or Health - Any
supplied-air respirator with full facepiece and operated in a
pressure-demand or other positive-pressure mode in combination with
a separate escape supply. Any self-contained breathing apparatus
with a full facepiece.
Ventilation:Provide local exhaust ventilation system. Ventilation
equipment should be explosion-resistant if explosive concentrations
of material are present. Ensure compliance with applicable exposure
limits.
Protective Gloves:Wear appropriate chemical resistant gloves.
Eye Protection:Wear splash resistant safety goggles. Provide an
emergency eye wash fountain and quick drench shower in the
immediate work area.
Other Protective Equipment:Wear appropriate chemical resistant
clothing.
Supplemental Safety and Health
ETHYL MERCAPTAN: 10 ppm (25 mg/m3) OSHA ceiling 0.5 ppm (1.3 mg/m3)
OSHA TWA (vacated by 58 FR 35338, June 30, 1993) 0.5 ppm ACGIH TWA
0.5 ppm (1.3 mg/m3) NIOSH recommended ceiling 15 minute(s)

Boiling Pt:95 F (35 C)
Melt/Freeze Pt:-227 F (-144 C)
Vapor Pres:442 mmHg @ 20 C
Vapor Density:2.14
Spec Gravity:0.8453 @ 25 C
pH:Not available
Evaporation Rate & Reference:Not available
Solubility in Water:6.7% @ 20 C
Appearance and Odor:PHYSICAL STATE:liquid COLOR:colorless ODOR:garlic
odor
Corrosion Rate:

Stability Indicator/Materials to Avoid:Contact with water or moist air
may form flammable and/or toxic gases or vapors.
Stability Condition to Avoid:Avoid heat, flames, sparks and other
sources of ignition. Containers may rupture or explode if exposed
to heat. Keep out of water supplies and sewers.
Hazardous Decomposition Products:Thermal decomposition products: oxides
of sulfur Thermal decomposition products: oxides of sulfur
Conditions to Avoid Polymerization:Will not polymerize.

Waste Disposal Methods:Subject to disposal regulations: U.S. EPA 40 CFR
262. Hazardous Waste Number(s): D001. Dispose in accordance with
all applicable regulations.

Toxicological Information:ETHYL MERCAPTAN: IRRITATION DATA: 500 mg/24
hour(s) skin-rabbit mild; 84 mg eyes-rabbit; 100 mg/24 hour(s)
eyes-rabbit moderate TOXICITY DATA: 4420 ppm/4 hour(s)
inhalation-rat LC50; 682 mg/kg oral-rat LD50 ACUTE TOXICITY LEVEL:
Moderately Toxic: inhalation, ingestion TARGET ORGANS: central
nervous system

Disclaimer (provided with this information by the compiling agencies):
This information is formulated for use by elements of the Department
of Defense. The United States of America in no manner whatsoever,
expressly or implied, warrants this information to be accurate and
disclaims all liability for its use. Any person utilizing this
document should seek competent professional advice to verify and
assume responsibility for the suitability of this information to their
particular situation.

Ecological:ECOTOXICITY DATA: FISH TOXICITY: 20000 ug/L 0.033 hour(s)
(Behavior) Aholehole (Kuhlia sandvicensis) INVERTEBRATE TOXICITY:
170 ug/L 48 hour(s) LC50 (Mortality) Water flea (Daphnia magna)

Transport Information:U.S. DOT 49 CFR 172.101: PROPER SHIPPING NAME:
Ethyl mercaptan ID NUMBER: UN2363 HAZARD CLASS OR DIVISION: 3
PACKING GROUP: I LABELING REQUIREMENTS: Flammable liquid QUANTITY
LIMITATIONS: PASSENGER AIRCRAFT OR RAILCAR: Forbidden CARGO
AIRCRAFT ONLY: 30 L

SARA Title III Information: SARA TITLE III SECTION 302 EXTREMELY
HAZARDOUS SUBSTANCES (40 CFR 355.30): Not regulated. SARA TITLE
III SECTION 304 EXTREMELY HAZARDOUS SUBSTANCES (40 CFR 355.40): Not
regulated. SARA TITLE III SARA SECTIONS 311/312 HAZARDOUS
CATEGORIES (40 CFR 370.21): ACUTE: Yes CHRONIC: No FIRE: Yes
REACTIVE: No SUDDEN RELEASE: No SARA TITLE III SECTION 313 (40
CFR 372.65): Not regulated.
Federal Regulatory Information:CERCLA SECTIONS 102a/103 HAZARDOUS
SUBSTANCES (40 CFR 302.4): Not regulated. OSHA PROCESS SAFETY
(29CFR1910.119): Not regulated.
State Regulatory Information: California Proposition 65: Not regulated.