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MSDS 
:
 1-Propanethiol, 98%
CAS 
:
 107-03-9
SYNONYMS 
:
 n-Propyl mercaptan; 1-Mercaptopropane; n-Propylthiol;     Propane-1-thiol; Propyl mercaptan; Propylthiol
**** SECTION 2 - COMPOSITION, INFORMATION ON INGREDIENTS ****

+----------------+--------------------------------------+----------+-----------+
| CAS# | Chemical Name | % | EINECS# |
|----------------|--------------------------------------|----------|-----------|
| 107-03-9 |1-Propanethiol | 98 | 203-455-5 |
+----------------+--------------------------------------+----------+-----------+
Hazard Symbols: XN F
Risk Phrases: 11 21/22 36/38

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

EMERGENCY OVERVIEW
Highly flammable. Harmful in contact with skin and if swallowed.
Irritating to eyes and skin.

Potential Health Effects
Eye:
Causes severe eye irritation. May cause chemical conjunctivitis
and corneal damage.
Skin:
Causes severe skin irritation. May cause contact dermatitis. May
cause cyanosis of the extremities.
Ingestion:
May cause gastrointestinal irritation with nausea, vomiting and
diarrhea. Ingestion of large amounts may cause CNS depression. May
be harmful if swallowed. May cause muscle weakness, convulsions, and
respiratory paralysis.
Inhalation:
May cause cyanosis (bluish discoloration of skin due to deficient
oxygenation of the blood). May cause respiratory tract irritation.
Aspiration may lead to pulmonary edema. Vapors may cause dizziness or
suffocation. May cause burning sensation in the chest.
Chronic:
Prolonged or repeated exposure may cause nausea, dizziness, and
headache. Effects may be delayed.

**** 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
immediately. Do NOT allow victim to rub eyes or keep eyes closed.
Skin:
Get medical aid immediately. Immediately flush skin with plenty of
water for at least 15 minutes while removing contaminated clothing
and shoes. Wash clothing before reuse.
Ingestion:
Never give anything by mouth to an unconscious person. Get medical
aid immediately. Do NOT induce vomiting. If conscious and alert,
rinse mouth and drink 2-4 cupfuls of milk or water.
Inhalation:
Remove from exposure and move to fresh air immediately. If breathing
is difficult, give oxygen. Get medical aid. Do not use mouth-to-mouth
resuscitation if victim ingested or inhaled the substance; induce
artificial respiration with the aid of a pocket mask equipped with a
one-way valve or other proper respiratory medical device.
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. Vapors may form an explosive mixture with air.
Vapors can travel to a source of ignition and flash back. During a
fire, irritating and highly toxic gases may be generated by thermal
decomposition or combustion. Will burn if involved in a fire. Use
water spray to keep fire-exposed containers cool. Containers may
explode in the heat of a fire. Flammable liquid and vapor. Vapors
may be heavier than air. They can spread along the ground and
collect in low or confined areas.
Extinguishing Media:
Use water spray to cool fire-exposed containers. Use foam, dry
chemical, or carbon dioxide. Water may be ineffective. Do NOT use
straight streams of water.

**** 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. Avoid runoff into storm sewers and
ditches which lead to waterways. Remove all sources of ignition. Use
a spark-proof tool. A vapor suppressing foam may be used to reduce
vapors.

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

Handling:
Wash thoroughly after handling. Ground and bond containers when
transferring material. Use spark-proof tools and explosion proof
equipment. Do not get on skin and clothing. Empty containers retain
product residue, (liquid and/or vapor), and can be dangerous. Keep
away from heat, sparks and flame. Avoid ingestion and inhalation.
Use only in a chemical fume hood. This product may be under
pressure; cool before opening. Do not pressurize, cut, weld, braze,
solder, drill, grind, or expose empty containers to heat, sparks or
open flames.
Storage:
Keep away from heat, sparks, and flame. Keep away from sources of
ignition. Store in a tightly closed container. Flammables-area.
Store in a cool, dry area away from incompatible substances.

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

Engineering Controls:
Use adequate general or local explosion-proof ventilation to keep
airborne levels to acceptable levels.
Exposure Limits
CAS# 107-03-9:


Personal Protective Equipment

Eyes:
Wear appropriate protective eyeglasses or chemical
safety goggles as described by OSHA's eye and face
protection regulations in 29 CFR 1910.133 or European
Standard EN166.
Skin:
Wear appropriate protective gloves to prevent skin
exposure.
Clothing:
Wear appropriate protective clothing to prevent skin
exposure.
Respirators:
A respiratory protection program that meets OSHA's 29
CFR 1910.134 and ANSI Z88.2 requirements or European
Standard EN 149 must be followed whenever workplace
conditions warrant respirator use.

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

Physical State: Clear liquid
Color: colorless
Odor: stench
pH: Not available.
Vapor Pressure: 162 hPa @ 20 deg C
Viscosity: Not available.
Boiling Point: 67 - 68 deg C @ 760
Freezing/Melting Point: -113 deg C
Autoignition Temperature: Not applicable.
Flash Point: -20 deg C ( -4.00 deg F)
Explosion Limits, lower: Not available.
Explosion Limits, upper: Not available.
Decomposition Temperature: Not available.
Solubility in water: immiscible with water
Specific Gravity/Density: .8410g/cm3
Molecular Formula: CH3CH2CH2SH
Molecular Weight: 76.15

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

Chemical Stability:
Stable under normal temperatures and pressures.
Conditions to Avoid:
Incompatible materials, ignition sources, excess heat.
Incompatibilities with Other Materials:
Oxidizing agents, reducing agents, strong acids, strong bases, alkali
metals, calcium hypochlorite.
Hazardous Decomposition Products:
Carbon monoxide, oxides of sulfur, carbon dioxide, hydrogen sulfide.
Hazardous Polymerization: Will not occur.

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

RTECS#:
CAS# 107-03-9: TZ7300000
LD50/LC50:
CAS# 107-03-9: Draize test, rabbit, eye: 83 mg Severe; Inhalation,
mouse: LC50 = 4010 ppm/4H; Inhalation, rat: LC50 = 7300 ppm/4H; Oral,
rat: LD50 = 1790 mg/kg.
Oral, Rat: LD50 = 1790
Carcinogenicity:
1-Propanethiol -
Not listed by ACGIH, IARC, or NTP.
Other:
See actual entry in RTECS for complete information.

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

Other
No information available.

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

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

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

IATA
Shipping Name: PROPANETHIOLS
Hazard Class: 3
UN Number: 2402
Packing Group: II
IMO
Shipping Name: PROPANETHIOLS
Hazard Class: 3.1
UN Number: 2402
Packing Group: II
RID/ADR
Shipping Name: PROPANETHIOLS
Hazard Class: 3
UN Number: 2402
Packing group: II

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

European/International Regulations
European Labeling in Accordance with EC Directives
Hazard Symbols: XN F
Risk Phrases:
R 11 Highly flammable.
R 21/22 Harmful in contact with skin and if
swallowed.
R 36/38 Irritating to eyes and skin.
Safety Phrases:
S 9 Keep container in a well-ventilated place.
S 16 Keep away from sources of ignition - No
smoking.
S 33 Take precautionary measures against static
discharges.
S 36/37/39 Wear suitable protective clothing, gloves
and eye/face protection.
WGK (Water Danger/Protection)
CAS# 107-03-9: No information available.
Canada
CAS# 107-03-9 is listed on Canada's DSL List.
CAS# 107-03-9 is listed on Canada's Ingredient Disclosure List.
US FEDERAL
TSCA
CAS# 107-03-9 is listed on the TSCA inventory.

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

MSDS Creation Date: 9/02/1997 Revision #5 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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