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MSDS Material Safety Data Sheet
CAS

111-88-6

File Name: arkemainc_com---977.asp
                                                                 n-OCTYL MERCAPTAN
Material Safety Data Sheet
Arkema Inc.
1 PRODUCT AND COMPANY IDENTIFICATION

EMERGENCY PHONE NUMBERS:
Thio and Fine Chemicals
Chemtrec: (800) 424-9300 (24hrs) or (703) 527-3887
Arkema Inc.
Medical: Rocky Mountain Poison Control Center
2000 Market Street
(866) 767-5089 (24Hrs)
Philadelphia, PA 19103
Information Telephone Numbers Phone Number Available Hrs
Customer Service 1-800-628-4453 8:30 to 5:30 EST

Product Name n-OCTYL MERCAPTAN
Product Synonym(s)

Chemical Family Alkyl Mercaptan
Chemical Formula C8H18S
Chemical Name 1-Octanethiol
EPA Reg Num
Product Use


2 COMPOSITION / INFORMATION ON INGREDIENTS

Ingredient Name CAS RegistryNumber Typical % OSHA
n-Octanethiol 111-88-6 98% Y
The substance(s) marked with a "Y" in the OSHA column, are identified as hazardous chemicals according to the
criteria of the OSHA Hazard Communication Standard (29 CFR 1910.1200)

This material is classified as hazardous under Federal OSHA regulation.

The components of this product are all on the TSCA Inventory list.


3 HAZARDS IDENTIFICATION

Emergency Overview
Colorless liquid, mercaptan odor.
WARNING!
CAUSES EYE AND SKIN IRRITATION.
MAY CAUSE ALLERGIC SKIN REACTION.
MAY CAUSE NAUSEA, HEADACHE OR DIZZINESS.


Potential Health Effects

Inhalation and skin contact are expected to be the primary routes of occupational exposure to this material. Based on
single exposure animal tests, it is considered to be slightly toxic if swallowed, no more than slightly toxic if absorbed
through skin, no more than moderately toxic if inhaled, moderately irritating to eyes, and slightly irritating to skin. This
material has a strong objectionable odor that may cause nausea, headache, or dizziness. Repeated contact may
cause an allergic skin reaction.


4 FIRST AID MEASURES




Product Code: 001482 Page 1
Revision: 13 Issued: 02 MAR 2007 of 6
n-OCTYL MERCAPTAN
Material Safety Data Sheet
Arkema Inc.

4 FIRST AID MEASURES

IF IN EYES, immediately flush with plenty of water for at least 15 minutes. Get medical attention immediately.

IF ON SKIN, immediately wash with soap and plenty of water. Remove contaminated clothing and shoes.
Get medical attention if symptoms occur. Wash clothing before reuse. Thoroughly clean shoes before reuse.

IF SWALLOWED, do NOT induce vomiting. Give water to drink. Get medical attention immediately. Call a
Poison Control Center. NEVER GIVE ANYTHING BY MOUTH TO AN UNCONSCIOUS PERSON.

IF INHALED, remove to fresh air. If not breathing, give artificial respiration. If breathing is difficult, give
oxygen. Get medical attention.


5 FIRE FIGHTING MEASURES

Fire and Explosive Properties
Auto-Ignition Temperature 237 C
Flash Point 70 C (158 F) Flash Point Method Seta CC
Flammable Limits- Upper NE
NE
Lower
Extinguishing Media
Use water spray, carbon dioxide, foam or dry chemical.

Fire Fighting Instructions
Do NOT permit water to enter containers. Material may spatter or foam if contacted with water. Fire fighters
and others who may be exposed to products of combustion should wear full fire fighting turn out gear (full Bunker
Gear) and self-contained breathing apparatus (pressure demand NIOSH approved or equivalent). Fire fighting
equipment should be thoroughly decontaminated after use.

Fire and Explosion Hazards
When burned, the following hazardous products of combustion can occur:
Hydrogen sulfide
Sulfur oxides
Oxides of carbon


6 ACCIDENTAL RELEASE MEASURES

In Case of Spill or Leak
Ventilate the area. Contain spill by building a dike using absorbent material. Consult with environmental
engineer or professional to determine if neutralization is appropriate and for handling procedures for residual
materials. Do not use solid bleach for neutralization, as fire or violent reaction can occur. Collect the liquid
and solid absorbent into a drum approved for waste disposal. Flush area with water. Consult a regulatory
specialist to determine appropriate state or local reporting requirements, for assistance in waste
characterization and/or hazardous waste disposal and other requirements listed in pertinent environmental
permits.


7 HANDLING AND STORAGE



Product Code: 001482 Page 2
Revision: 13 Issued: 02 MAR 2007 of 6
n-OCTYL MERCAPTAN
Material Safety Data Sheet
Arkema Inc.

7 HANDLING AND STORAGE

Handling
Do not get in eyes, on skin or on clothing.
Wash thoroughly after handling.
Keep away from heat, sparks and flames.
Keep container closed.
Use only with adequate ventilation.


CONTAINER HAZARDOUS WHEN EMPTY. Emptied container retains vapor and product residue. Follow
labeled warnings even after container is emptied. RESIDUAL VAPORS MAY EXPLODE ON IGNITION. DO
NOT CUT, DRILL GRIND OR WELD ON OR NEAR THIS CONTAINER. Improper disposal or reuse of this
container may be dangerous and/or illegal.
Storage
Store in well ventilated area away from heat and sources of ignition such as flame, sparks and static
electricity. Ensure that all storage and handling equipment is properly rated, grounded and installed to satisfy
electrical classification requirements. Static electricity may accumulate and create a fire hazard. All storage
containers, including containers such as drums, cylinders and IBC鈥檚, must be bonded and grounded during
filling and emptying operations. Store away from oxidizers and reactive materials. Keep container tightly
closed. Observe all federal, state and local regulations and National Fire Protection Association (NFPA)
Codes which pertain to the specific local conditions of storage and use, including OSHA 29 CFR 1910.106
and NFPA 30, 70, 77, and 497.


8 EXPOSURE CONTROLS / PERSONAL PROTECTION

Engineering Controls
Investigate engineering techniques to reduce exposures. Provide ventilation if necessary to minimize
exposures. If practical, use local mechanical exhaust ventilation at sources of air contamination such as
open process equipment. Consult ACGIH ventilation manual or NFPA Standard 91 for design of exhaust
systems.

Eye / Face Protection
Where there is potential for eye contact, wear a face shield, chemical goggles, and have eye flushing
equipment immediately available.

Skin Protection
Wear appropriate chemical resistant protective clothing and chemical resistant gloves to prevent skin
contact. Consult glove manufacturer to determine appropriate type glove material for given application.
Wear face shield and chemical resistant clothing such as a rubber apron when splashing may occur. Rinse
contaminated skin promptly. Wash contaminated clothing and clean protective equipment before reuse.
Wash skin thoroughly after handling.

Respiratory Protection
Avoid breathing vapor or mist. Where airborne exposure is likely, use NIOSH approved respiratory
protection equipment appropriate to the material and/or its components. Full facepiece equipment is
recommended and, if used, replaces need for face shield and/or chemical goggles. If exposures cannot be
kept at a minimum with engineering controls, consult respirator manufacturer to determine appropriate type
equipment for given application. Observe respirator use limitations specified by NIOSH or the manufacturer.
For emergency and other conditions where there may be a potential for significant exposure, use an
approved full face positive-pressure, self-contained breathing apparatus or positive-pressure airline with
auxiliary self-contained air supply. Respiratory protection programs must comply with 29 CFR 搂 1910.134.


Product Code: 001482 Page 3
Revision: 13 Issued: 02 MAR 2007 of 6
n-OCTYL MERCAPTAN
Material Safety Data Sheet
Arkema Inc.

8 EXPOSURE CONTROLS / PERSONAL PROTECTION


Airborne Exposure Guidelines for Ingredients

The components of this product have no established Airborne Exposure Guidelines
-Only those components with exposure limits are printed in this section.
-Skin contact limits designated with a "Y" above have skin contact effect. Air sampling alone is insufficient to accurately quantitate
exposure. Measures to prevent significant cutaneous absorption may be required.
-ACGIH Sensitizer designator with a value of "Y" above means that exposure to this material may cause allergic reactions.
-WEEL-AIHA Sensitizer designator with a value of "Y" above means that exposure to this material may cause allergic skin reactions.


9 PHYSICAL AND CHEMICAL PROPERTIES

Colorless liquid, mercaptan odor.
Appearance/Odor
pH NE
Specific Gravity 0.847 @ 15.5 C
Vapor Pressure 0.03 psia @ 100 F
Vapor Density 5
Melting Point -49 C
Freezing Point NA
Boiling Point 199 C
Solubility In Water 4 mg/l @ 20 C
Solubility in Other Materials Alcohols, ethyl ether
Percent Volatile 100
Viscosity 1.33 cP
Molecular Weight 146.3
Other Physical Data Refractive index: 1.454 @ 20 C
Critical temperature: Tc = 391 C
Critical pressure: Pc = 2.48 MPa (24.8 bar)


10 STABILITY AND REACTIVITY


Stability
This material is chemically stable under normal and anticipated storage and handling conditions.

Incompatibility
Avoid contact with strong oxidizing agents and strong bases.
Hazardous Decomposition Products
None known.


11 TOXICOLOGICAL INFORMATION

Toxicological Information
Data on this material and/or its components are summarized below.

Single exposure (acute) studies indicate:
Oral - Slightly Toxic to Rats (LD50 2,000 mg/kg)
Dermal - No More than Slightly Toxic to Rats (LD0 2,000 mg/kg)
Inhalation - No More than Moderately Toxic to Rats (4-hr LC0 0.24 mg/l)


Product Code: 001482 Page 4
Revision: 13 Issued: 02 MAR 2007 of 6
n-OCTYL MERCAPTAN
Material Safety Data Sheet
Arkema Inc.

11 TOXICOLOGICAL INFORMATION

Eye Irritation - Moderately Irritating to Rabbits
Skin Irritation - Slightly Irritating to Rabbits

Skin allergy was observed in guinea pigs following repeated skin exposure. No genetic changes were noted in
tests using bacteria or human cells.

12 ECOLOGICAL INFORMATION

Ecotoxicological Information
This material is highly toxic to Daphnia magna (48-hr EC50 <0.42 mg/l).
Chemical Fate Information
This material is not readily biodegradable (10% after 28-days; OECD 301D).


13 DISPOSAL CONSIDERATIONS

Waste Disposal
Incineration is the recommended method for disposal observing all local, state and federal regulations. Note:
Chemical additions to, processing of, or otherwise altering this material may make this waste management
information incomplete, inaccurate, or otherwise inappropriate. Furthermore, state and local waste disposal
requirements may be more restrictive or otherwise different from federal laws and regulations. Take
appropriate measures to prevent release to the environment.

14 TRANSPORT INFORMATION

DOT Name Non-bulk Domestic:
Not regulated
DOT Technical Name
DOT Hazard Class
UN Number
DOT Packing Group PG
RQ
Marine Pollutant Yes
Bulk and non-bulk Internarional:
DOT Special Information
Environmentally hazardous substance, liquid, n.o.s.
(n-Octanethiol), 9; UN3082; PGIII; MP

Domestic Bulk:
Combustible liquid, n.o.s.
(n-Octanethiol), 3; NA1993; PGIII; MP


15 REGULATORY INFORMATION

Hazard Categories Under Criteria of SARA Title III Rules (40 CFR Part 370)
Immediate (Acute) Health Y Fire N
Delayed (Chronic) Health N Reactive N
Sudden Release of Pressure N
The components of this product are all on the TSCA Inventory list.



Product Code: 001482 Page 5
Revision: 13 Issued: 02 MAR 2007 of 6
n-OCTYL MERCAPTAN
Material Safety Data Sheet
Arkema Inc.


Ingredient Related Regulatory Information:
CERCLA RQ SARA TPQ
SARA Reportable Quantities
n-Octanethiol NE

Massachusetts Right to Know
This product does contain the following chemicals(s), as indicated below, currently on the Massachusetts Right to Know Substance
List.
n-Octanethiol
New Jersey Right to Know
This product does contain the following chemical(s), as indicated below, currently on the New Jersey Right-to-Know Substances List.
n-Octanethiol
Pennsylvania Right to Know
This product does contain the following chemical(s), as indicated below, currently on the Pennsylvania Hazardous Substance List.
n-Octanethiol

16 OTHER INFORMATION


Revision Information

Revision Number 13
02 MAR 2007
Revision Date
Supercedes Revision Dated 30-DEC-2005
Revision Summary
Revised HEIS, revised sections 3,11,12.

Key
NE= Not Established NA= Not Applicable (R) = Registered Trademark




Arkema Inc. believes that the information and recommendations contained herein (including data and
statements) are accurate as of the date hereof. NO WARRANTY OF FITNESS FOR ANY PARTICULAR
PURPOSE, WARRANTY OF MERCHANTABILITY, OR ANY OTHER WARRANTY, EXPRESSED OR
IMPLIED, IS MADE CONCERNING THE INFORMATION PROVIDED HEREIN. The information provided
herein relates only to the specific product designated and may not be valid where such product is used in
combination with any other materials or in any process. Further, since the conditions and methods of use are
beyond the control of Arkema Inc., Arkema Inc. expressly disclaims any and all liability as to any results
obtained or arising from any use of the product or reliance on such information.




Product Code: 001482 Page 6
Revision: 13 Issued: 02 MAR 2007 of 6

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