SIGMA CHEMICAL CO -- L-METHIONINE, M9625  -- 6505-00N092663
<pre>=====================  Product Identification  =====================

Product ID:L-METHIONINE, M9625
MSDS Date:07/01/1999
FSC:6505
NIIN:00N092663
Status Code:A
=== Responsible Party ===
Company Name:SIGMA CHEMICAL CO
Box:14508
City:ST LOUIS
State:MO
ZIP:63178
Country:US
Info Phone Num:314-771-5765
Emergency Phone Num:314-771-5765
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:METHIONINE, L-; (L-METHIONINE). LD50:(ORAL,RAT) 36 GM/KG.
CAS:63-68-3
RTECS #:PD0457000
= Wt:100.

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

LD50 LC50 Mixture:SEE INGREDIENTS & TOXICOLOGICAL INFO.
Routes of Entry: Inhalation:YES  Skin:YES  Ingestion:YES
Reports of Carcinogenicity:NTP:NO    IARC:NO	OSHA:NO
Health Hazards Acute and Chronic:ACUTE: MAY BE HARMFUL BY INHALATION,
    INGESTION OR SKIN ABSORPTION. MAY CAUSE EYE IRRITATION. MAY CAUSE
    SKIN IRRITATION. MATERIAL MAY BE IRRITATING TO MUCOUS MEMBRANES AND
    UPPER RESPIRATORY TRACT.
Effects of Overexposure:SEE HEALTH HAZARDS.

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

First Aid:EYES: IMMEDIATELY FLUSH WITH COPIOUS AMOUNTS OF WATER FOR AT
    LEAST 15 MINUTES. SKIN: IMMEDIATELY WASH WITH SOAP AND COPIOUS
    AMOUNTS OF WATER. INHALATION: REMOVE TO FRESH AIR. INGESTION: CALL
    MD IMMEDI ATELY .

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

Extinguishing Media:WATER SPRAY, CARBON DIOXIDE, DRY CHEMICAL POWDER OR
    APPROPRIATE FOAM.
Fire Fighting Procedures:USE NIOSH APPROVED SCBA AND FULL PROTECTIVE
    EQUIPMENT .

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

Spill Release Procedures:WEAR NIOSH APPROVED RESPIRATOR, CHEMICAL
    SAFETY GOGGLES, RUBBER BOOTS AND HEAVY RUBBER GLOVES. SPILLED
    MATERIAL SHOULD BE CAREFULLY WIPED UP OR MOISTENED WITH WATER AND
    REMOVED. VENTILATE AREA AND WAS H SPILL SITE AFTER MATERIAL PICKUP
    IS COMPLETE.

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

Handling and Storage Precautions:AVOID INHALATION. AVOID CONTACT WITH
    EYES, SKIN AND CLOTHING. AVOID PROLONGED AND REPEATED EXPOSURE.
    KEEP TIGHTLY CLOSED.

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

Respiratory Protection:NIOSH APPROVED RESPIRATOR APPROPRIATE FOR
    EXPOSURE OF CONCERN .
Ventilation:MECHANICAL EXHAUST REQUIRED.
Protective Gloves:COMPATIBLE CHEMICAL-RESISTANT GLOVES.
Eye Protection:ANSI APPROVED CHEMICAL WORKERS GOGGLES .
Other Protective Equipment:ANSI APPROVED EYE WASH & DELUGE SHOWER .
Work Hygienic Practices:WASH THOROUGHLY AFTER HANDLING.
Supplemental Safety and Health
MFR'S INFORMATION OF INGREDIENTS: MOLECULAR FORMULA: C5H11NO2S. EC NO:
    200-562-9.

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

Melt/Freeze Pt:=284.C, 543.2F
M.P/F.P Text:DECOMPOSES
Decomp Temp:=284.C, 543.2F
Appearance and Odor:WHITE CRYSTALS.

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

Stability Indicator/Materials to Avoid:YES
STRONG OXIDIZING AGENTS.
Hazardous Decomposition Products:CARBON MONOXIDE, CARBON DIOXIDE,
    NITROGEN OXIDES, SULFUR OXIDES.
Conditions to Avoid Polymerization:WILL NOT OCCUR.

===================  Toxicological Information	===================

Toxicological Information:TO THE BEST OF MFR'S KNOWLEDGE, THE CHEMICAL,
    PHYSICAL AND TOXICOLOGICAL PROPERTIES HAVE NOT BEEN THOROUGHLY
    INVESTIGATED. TOXICITY DATA: LD50:(ORAL,RAT) 36 GM/KG - GISAAA
    48(6),20,1983. LD50:(IPR,RAT ) 4328 MG/KG - ABBIA4 58,253,1955.
    LD50:(IPR,MUS) >9500 MG/KG - PMRSDJ 1,682,1981. ONLY SELECTED
    REGISTRY OF TOXIC EFFECTS OF CHEMICAL SUBSTANCES (RTECS) DATA IS
    PRESENTED HERE. SEE ACTUAL ENTRY IN RT ECS FOR COMPLETE
    INFORMATION.

=====================  Ecological Information  =====================

Ecological:DATA NOT YET AVAILABLE.

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

Waste Disposal Methods:DISSOLVE OR MIX THE MATERIAL WITH A COMBUSTIBLE
    SOLVENT AND BURN IN A CHEMICAL INCINERATOR EQUIPPED WITH AN
    AFTERBURNER AND SCRUBBER. OBSERVE ALL FEDERAL, STATE AND LOCAL
    ENVIRONMENTAL REGULATIONS.

===================  MSDS Transport Information  ===================

Transport Information:CONTACT SIGMA CHEMICAL COMPANY FOR TRANSPORTATION
    INFORMATION.

=====================  Regulatory Information  =====================

Federal Regulatory Information:REVIEW, STANDARDS AND REGULATIONS: OEL=
    MAK. OEL-RUSSIA:STEL 5 MG/M3 JAN 1993. NOHS 1974: HZD 81891; NIS 5;
    TNF 23; NOS 17; TNE 12017 NOES 1983: HZD 81891; NIS 4; TNF 1116;
    NOS 18; TNE 28520; TFE 1703 8. EPA GENETOX PROGRAM 1988, NEGATIVE:
    SPERM MORPHOLOGY-MOUSE. EPA GENETOX PROGRAM 1988, INCONCLUSIVE:
    MAMMALIAN MICRONUCLEUS. EPA TSCA SECTION 8(B) CHEMICAL INVENTORY.
    EPA TSCA SECTION 8(D) UNPUBLISH ED HEALTH/SAFETY STUDIES. EPA TSCA
    TEST SUBMISSION (TSCATS) DATA BASE. DECEMBER 1998

=======================  Other Information  =======================

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