SIGMA CHEMICAL CO -- L-CYSTEINE FREE BASE CRYSTALLINE, C7755  -- 6810-00N062548
<pre>=====================  Product Identification  =====================

Product ID:L-CYSTEINE FREE BASE CRYSTALLINE, C7755
MSDS Date:05/18/1988
FSC:6810
NIIN:00N062548
=== Responsible Party ===
Company Name:SIGMA CHEMICAL CO
Box:14508
City:ST LOUIS
State:MO
ZIP:63178
Country:US
Info Phone Num:800-325-8070
Emergency Phone Num:314-771-5765
CAGE:0DK69
=== Contractor Identification ===
Company Name:ALDRICH CHEMICAL CO INC
Address:1001 WEST ST PAUL AVE
Box:355
City:MILWAUKEE
State:WI
ZIP:53233
Country:US
Phone:414-273-3850
CAGE:60928
Company Name:SIGMA CHEMICAL CO SIGMA DIAGNOSTICS DIV
Address:3050 SPRUCE ST
Box:City:ST LOUIS
State:MO
ZIP:63103-2530
Country:US
Phone:314-771-5765
CAGE:0DK69

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

Ingred Name:CYSTEINE, L-; (L-CYSTEINE FREE BASE CRYSTALLINE)
CAS:52-90-4
RTECS #:HA1600000
OSHA PEL:N/K 
ACGIH TLV:N/K 

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

LD50 LC50 Mixture:LD50(ORAL,RAT):5580 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:ACUTE:CAUSES IRRITATION. MATERIAL IS
    IRRITATING TO MUCOUS MEMBRANES AND UPPER RESPIRATORY TRACT.
    IRRITATING TO EYES AND SKIN. THE TOXICOLOGICAL PROPERTIES HAVE NOT
    BEEN THOROUGHLY INVESTIGATED.
Explanation of Carcinogenicity:NOT RELEVANT
Effects of Overexposure:SEE HEALTH HAZARDS.
Medical Cond Aggravated by Exposure:NONE SPECIFIED BY MANUFACTURER.

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

First Aid:INGEST:WASH OUT MOUTH W/WATER PROVIDED PERSON IS CONSCIOUS.
    CALL MD. SKIN:FLUSH W/COPIOUS AMTS OF WATER FOR @ LST 15 MIN.
    REMOVE CONTAM CLTHG & SHOES & CALL MD. INHAL:REMOVE TO FRESH AIR.
    IF BRTHG BEC OMES DFCLT, CALL MD. EYES:FLUSH W/COPIOUS AMTS OF
    WATER FOR @ LST 15 MIN. ASSURE ADEQ FLUSHING BY SEPARATING EYELIDS
    W/FINGERS. CALL MD.

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

Extinguishing Media:CARBON DIOXIDE, DRY CHEMICAL POWDER, ALCOHOL OR
    POLYMER FOAM.
Fire Fighting Procedures:WEAR NIOSH/MSHA APPROVED SCBA & FULL
    PROTECTIVE EQUIPMENT .
Unusual Fire/Explosion Hazard:EMITS TOXIC FUMES UNDER FIRE CONDITIONS.

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

Spill Release Procedures:WEAR NIOSH/MSHA APPROVED RESPIRATOR, CHEMICAL
    SAFETY GOGGLES, RUBBER BOOTS AND HEAVY RUBBER GLOVES. SWEEP UP,
    PLACE IN A BAG AND HOLD FOR WASTE DISPOSAL. AVOID RASING DUST.
    VENTILATE AREA AND WASH SPI LL SITE AFTER MATERIAL PICKUP IS
    COMPLETE.
Neutralizing Agent:NONE SPECIFIED BY MANUFACTURER.

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

Handling and Storage Precautions:WEAR SUITABLE PROTECTIVE CLOTHING.
    PROTECT FROM LIGHT AND AIR. HYGROSCOPIC.
Other Precautions:NONE SPECIFIED BY MANUFACTURER.

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

Respiratory Protection:NIOSH/MSHA APPROVED RESPIRATOR.
Ventilation:MECHANICAL EXHAUST.
Protective Gloves:CHEMICAL RESISITANT GLOVES.
Eye Protection:ANSI APPROVED CHEM WORKERS GOGGS .
Other Protective Equipment:ANSI APPROVED EMERGENCY EYE BATH AND DELUGE
    SHOWER .
Work Hygienic Practices:NONE SPECIFIED BY MANUFACTURER.
Supplemental Safety and Health
NONE SPECIFIED BY MANUFACTURER.

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

Solubility in Water:SOLUBLE
Appearance and Odor:WHITE POWDER WITH SLIGHT CHARACTERISTIC ODOR.

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

Stability Indicator/Materials to Avoid:YES
AVOID CONTACT WITH METALS.
Stability Condition to Avoid:AIR AND LIGHT SENSITIVE.
Hazardous Decomposition Products:TOXIC FUMES OF:CARBON MONOXIDE AND
    CARBON DIOXIDE, NITROGEN OXIDES, SULFUR OXIDES, HYDROGEN CHLORIDE
    GAS.

====================  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
    LAWS.

 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.