SIGMA CHEMICAL COMPANY -- 109207 2-METHYL-2-PROPANETHIOL 99%  -- 6850-00F056221
<pre>=====================  Product Identification  =====================

Product ID:109207 2-METHYL-2-PROPANETHIOL 99%
MSDS Date:01/01/1997
FSC:6850
NIIN:00F056221
=== Responsible Party ===
Company Name:SIGMA CHEMICAL COMPANY
Address:3050 SPRUCE ST
Box:14508
City:SAINT LOUIS
State:MO
ZIP:63178-5000
Country:US
Info Phone Num:314-771-5765/800-325-3010
Emergency Phone Num:314-771-5765/800-325-3010
CAGE:21076
=== Contractor Identification ===
Company Name:SIGMA CHEMICAL COMPANY
Address:3050 SPRUCE ST
Box:14508
City:ST LOUIS
State:MO
ZIP:63178
Country:US
Phone:314-771-5765
CAGE:21076

=============  Composition/Information on Ingredients  =============

Ingred Name:T-BUTYL MERCAPTAN
CAS:75-66-1
RTECS #:TZ7660000
Fraction by Wt: 99%

=====================  Hazards Identification  =====================

LD50 LC50 Mixture:ORAL LD50(RAT): 4729 MG/KG
Routes of Entry: Inhalation:YES  Skin:YES  Ingestion:YES
Reports of Carcinogenicity:NTP:NO    IARC:NO	OSHA:NO
Health Hazards Acute and Chronic:HARMFUL IF INHALED/SWALLOWED.
    INHALATION: MAY BE IRRITATING TO THE EYES, MUCOUS MEMBRANES & UPPER
    RESPIRATORY TRACT. CAUSES SKIN IRRITATION.
Explanation of Carcinogenicity:NONE
Effects of Overexposure:IRRITATION, NAUSEA, HEADACHE, VOMITING

=======================  First Aid Measures  =======================

First Aid:SKIN: WASH W/SOAP & COPIOUS AMOUNTS OF WATER. EYES:
    IMMEDIATELY FLUSH W/COPIOUS AMOUNTS OF WATER FOR 15 MINS.
    INHALATION: REMOVE TO FRESH AIR. GIVE CPR/OXYGEN IF NECESSARY.
    INGESTION: WASH OUT MOUTH W /WATER IF CONSCIOUS. OBTAIN MEDICAL
    ATTENTION IN ALL CASES.

=====================  Fire Fighting Measures  =====================

Flash Point:-12F
Extinguishing Media:CO2, DRY CHEMICAL POWDER/APPROPRIATE FOAM. WATER
    MAY BE EFFECTIVE FOR COOL, BUT MAY NOT EFFECT EXTINGUISHMENT.
Fire Fighting Procedures:WEAR SELF CONTAINED BREATHING APPARATUS &
    PROTECTIVE CLOTHING TO PREVENT CONTACT W/SKIN & EYES. USE WATER
    SPRAY TO COOL FIRE-EXPOSED CONTAINERS.
Unusual Fire/Explosion Hazard:VAPOR MAY TRAVEL CONSIDERABLE DISTANCE TO
    SOURCE OF IGNITION & FLASH BACK. CONTAINER EXPLOSION MAY OCCUR
    UNDER FIRE CONDITIONS.			(SEE SUPP)

==================  Accidental Release Measures  ==================

Spill Release Procedures:EVACUATE AREA. WEAR SCBA, RUBBER BOOTS & HEAVY
    RUBBER GLOVES. SHUT OFF ALL IGNITION SOURCES. COVER W/AN ACTIVATED
    CARBON ABSORBENT, TAKE UP & PLACE IN CLOSED CONTAINERS. TRANSPORT
    OUTDOORS. VENTILATE  AREA & WASH SITE AFTER PICKUP IS COMPLETE.

======================	Handling and Storage  ======================

Handling and Storage Precautions:STORE IN A COOL, DRY PLACE AWAY FROM
    IGNITION SOURCES. KEEP CONTAINER TIGHTLY CLOSED. WEAR SUITABLE
    PROTECTIVE CLOTHING, GLOVES, EYE/FACE PROTECTION.
Other Precautions:DON'T BREATHE VAPOR. DON'T GET IN EYES, ON SKIN/ON
    CLOTHING. AVOID PROLONGED/REPEATED EXPOSURE.

=============  Exposure Controls/Personal Protection  =============

Respiratory Protection:WEAR APPROPRIATE NIOSH/MSHA APPROVED RESPIRATOR.
Ventilation:USE ONLY IN A CHEMICAL FUME HOOD.
Protective Gloves:CHEMICAL RESISTANT
Eye Protection:SAFETY GOGGLES
Other Protective Equipment:PROTECTIVE CLOTHING, SAFETY SHOWER, EYE BATH
Work Hygienic Practices:REMOVE/DISCARD CONTAMINATED CLOTHING & SHOES.
    WASH THOROUGHLY AFTER HANDLING. NO SMOKING.
Supplemental Safety and Health
FIRE HAZ CONT'D: EMITS TOXIC FUMES UNDER FIRE CONDITIONS. FORMS
    EXPLOSIVE MIXTURES IN AIR.

==================  Physical/Chemical Properties  ==================

Boiling Pt:B.P. Text:143.6-149F
Vapor Pres:303.5
Vapor Density:3.1
Spec Gravity:0.8
Appearance and Odor:COLORLESS LIQUID

=================  Stability and Reactivity Data  =================

Stability Indicator/Materials to Avoid:YES
BASES, OXIDIZING AGENTS, REDUCING AGENTS, ALKALI METALS
Stability Condition to Avoid:HEAT, SPARKS, OPEN FLAME & OTHER IGNITION
    SOURCES, STENCH
Hazardous Decomposition Products:CO, CO2, SULFUR OXIDES, HYDROGEN
    SULFIDE GAS

====================  Disposal Considerations  ====================

Waste Disposal Methods:BURN IN A CHEMICAL INCINERATOR EQUIPPED W/AN
    AFTERBURNER & SCRUBBER BUT EXERT CARE IN IGNITING AS THIS MATERIAL
    IS HIGHLY FLAMMABLE. DISPOSE OF IAW/LOCAL, STATE & FEDERAL
    REGULATIONS.

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