SIGMA CHEMICAL COMPANY -- DL-TYROSINE, 99%  -- 6810-01-445-8275
<pre>=====================  Product Identification  =====================

Product ID:DL-TYROSINE, 99%
MSDS Date:10/01/1997
FSC:6810
NIIN:01-445-8275
Status Code:A
=== Responsible Party ===
Company Name:SIGMA CHEMICAL COMPANY
Address:3050 SPRUCE ST
Box:14508
City:ST. LOUIS
State:MO
ZIP:63178
Country:US
Info Phone Num:800-325-3010/FAX 800-325-5052
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:DL-TYROSINE
CAS:556-03-6
Fraction by Wt: 99%
Other REC Limits:NONE RECOMMENDED

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

Routes of Entry: Inhalation:YES  Skin:YES  Ingestion:YES
Reports of Carcinogenicity:NTP:NO    IARC:NO	OSHA:NO
Health Hazards Acute and Chronic:CAUSES EYE AND SKIN IRRITATION.
    MATERIAL IS IRRITATING TO MUCOUS MEMBRANES AND UPPER RESPIRATORY
    TRACT.
Explanation of Carcinogenicity:NONE
Effects of Overexposure:NONE SPECIFIED BY MANUFACTURER.
Medical Cond Aggravated by Exposure:NONE SPECIFIED BY MANUFACTURER.

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

First Aid:EYE-IMMEDIATELY FLUSH EYES WITH COPIOUS AMOUNTS OF WATER FOR
    15 MIN. SKIN-IMMEDIATELY WASH SKIN WITH SOAP AND COPIOUS AMOUNTS OF
    WATER. INHALED-REMOVE TO FRESH AIR. IF NOT BREATHING GIVE
    ARTIFICIAL RE SPIRATION, IF BREATHING IS DIFFICULT, GIVE OXYGEN.
    SWALLOWED-WASH OUT MOUTHH WITH WATER PROVIDED PERSON IN CONSCIOUS,
    CALL A PHYSICIAN. WASH CONTAMINATED CLOTHING BEFORE REUSE.

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

Autoignition Temp:Autoignition Temp Text:UNKNON
Extinguishing Media:WATER SPRAY, CARBON DIOXIDE, DRY CHEMICAL POWDER OR
    APPROPIATE FOAM.
Fire Fighting Procedures:WEAR SELF-CONTAINED BREATHING APPARATUS AND
    PROTECTIVE CLOTHING TO PREVENT CONTACT WITH SKIN AND EYES.
Unusual Fire/Explosion Hazard:EMITS TOXIC FUMES UNDER FIRE CONDITIONS.

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

Spill Release Procedures:WEAR RESPIRATOR, CHEMICAL SAFETY GOGGLES,
    RUBBER BOOTS AND HEAVY RUBBER GLOVES. SWEEP UP, PLACE IN A BAG AND
    HOLD FOR WASTE DISPOSAL. AVOID RAISING DUST. VENTILATE AREA AND
    WASH SPILL SITE AFTER MATER IAL PICKUP IS COMPLETE.
Neutralizing Agent:NONE SPECIFIED BY MANUFACTURER.

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

Handling and Storage Precautions:STORE IN A COOL DRY PLACE. KEEP
    TOGHTLY CLOSED.
Other Precautions:IRRITANT.

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

Respiratory Protection:NIOSH/MSHA-APPROVED RESPIRATOR.
Ventilation:MECHANICAL EXHAUST REQUIRED.
Protective Gloves:COMPATIBLE CHEMICAL-RESISTANT GLOVES.
Eye Protection:CHEMICAL SAFETY GOGGLES.
Other Protective Equipment:SAFETY SHOWER AND EYE BATH.
Work Hygienic Practices:DO NOT BREATHE DUST. WASH THOROUGHLY AFTER
    HANDLING.
Supplemental Safety and Health
DO NOT BREATHE DUST.

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

HCC:N1
Melt/Freeze Pt:M.P/F.P Text:617F,325C
Appearance and Odor:WHITE TO OFF-WHITE POWDER.

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

Stability Indicator/Materials to Avoid:YES
STRONG OXIDIZING AGENTS.
Stability Condition to Avoid:NONE SPECIFIED BY MANUFACTURER.
Hazardous Decomposition Products:CARBON MONOXIDE, CARBON DIOXIDE,
    NITROGEN OXIDES.

====================  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 LOCAL, STATE AND FEDERAL
    ENVIRONMENTAL REGULATIONS.

 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.