Product ID:BUTYL MERCAPTAN
MSDS Date:Jan 24 1989
MSDS Number: EEERX
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)

BUTYL MERCAPTAN

CAS: 109-79-5

Fraction By Weight: 100.0%

Reports of Carcinogenicity:NTP:No IARC:No OSHA:No
Health Hazards Acute and Chronic:INHALATION: SHORT TERM EXPOSURE:
nausea, vomiting, drowsiness, symptoms of drunkenness, bluish skin
color, paralysis, convulsions LONG TERM EXPOSURE: no information on
significant adverse effects SKIN CONTACT: SHORT TERM EXPOSURE: no
information on significant adverse effects LONG TERM EXPOSURE: no
information on significant adverse effects EYE CONTACT: SHORT TERM
EXPOSURE: irritation LONG TERM EXPOSURE: same as effects reported
in short term exposure INGESTION: SHORT TERM EXPOSURE: nausea,
symptoms of drunkenness, kidney damage, liver damage 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.
If breathing is difficult, oxygen should be administered by
qualified personnel. Get immediate medical attention. SKIN CONTACT:
Wash skin with soap and water for at least 15 minutes while
removing contaminated clothing and shoes. Get immediate medical
attention. Thoroughly clean and dry contaminated clothing and shoes
before reuse. Destroy contaminated shoes. 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:36 F (2 C) (OC)
Extinguishing Media:regular dry chemical, carbon dioxide, water,
regular foam, alcohol resistant foam Large fires: Use regular 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. 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 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
BUTYL MERCAPTAN: 10 ppm (35 mg/m3) OSHA TWA 0.5 ppm (1.8 mg/m3) OSHA
TWA (vacated by 58 FR 35338, June 30, 1993) 0.5 ppm ACGIH TWA 0.5
ppm (1.8 mg/m3) NIOSH recommended ceiling 15 minute(s)

Boiling Pt:208 F (98 C)
Melt/Freeze Pt:-177 F (-116 C)
Vapor Pres:83 mmHg @ 25 C
Vapor Density:3.1
Spec Gravity:0.8337
pH:Not available
Evaporation Rate & Reference:Not available
Solubility in Water:slightly soluble
Appearance and Odor:PHYSICAL STATE:liquid COLOR:colorless to yellow
ODOR:skunk-like odor
Corrosion Rate:

Stability Indicator/Materials to Avoid:Stable at normal temperatures
and pressure.
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:
hydrogen sulfide, oxides of sulfur, carbon Thermal decomposition
products: hydrogen sulfide, oxides of sulfur, carbon
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:BUTYL MERCAPTAN: IRRITATION DATA: 83 mg
eyes-rabbit TOXICITY DATA: 4020 ppm/4 hour(s) inhalation-rat LC50;
1500 mg/kg oral-rat LD50 ACUTE TOXICITY LEVEL: Moderately Toxic:
inhalation, ingestion TARGET ORGANS: central nervous system
REPRODUCTIVE EFFECTS DATA: Available.

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: 80000 ug/L 21 hour(s)
(Hematological) Channel catfish (Ictalurus punctatus)

Transport Information:U.S. DOT 49 CFR 172.101: PROPER SHIPPING NAME:
Butyl mercaptans ID NUMBER: UN2347 HAZARD CLASS OR DIVISION: 3
PACKING GROUP: II LABELING REQUIREMENTS: Flammable liquid

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.