=====================  Product Identification  =====================

MSDS NAME:METHYLENE BLUE, M4490-7
NIIN:00N066417
MSDS Number: CBDPM
=== Responsible Party ===
Company:ALDRICH CHEMICAL CO INC
Box:355
City:MILWAUKEE
State:WI
ZIP:53201
Country:US
Info Phone Num:414-273-3850
Emergency Phone Num:414-273-3850
CAGE:60928
=== Contractor Identification ===
Company: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

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

Name:3H-PHENOTHIAZINE, 7-(DIMETHYLAMINO)-3-(METHYLIMINO)-,
    3-METHOCHLORIDE; (METHYLENE BLUE)
CAS:61-73-4
RTECS #:SO5600000
OSHA PEL:N/K 
ACGIH TLV:N/K 

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

LD50 LC50 Mixture:LD50(ORAL,RAT):1180 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:MAY BE HARMFUL BY INHALATION,
    INGESTION OR SKIN ABSORPTION. CAUSES SEVERE EYE IRRITATION. MAY
    CAUSE SKIN IRRITATION. TO THE BEST OF MFR'S KNOWLEDGE, THE
    CHEMICAL, PHYSICAL, AND TOXICOLOGICAL PRO PERTIES 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:INGESTION:CALL MD IMMEDIATELY . EYES:IMMEDIATELY FLUSH WITH
    COPIOUS AMOUNTS OF WATER FOR AT LEAST 15 MINUTES. SKIN:IMMEDIATLEY
    WASH WITH SOAP AND COPIOUS AMOUNTS OF WATER. WASH CONTAMINATED CLOT
    HING BEFORE REUSE. INHALATION:REMOVE TOFRESH AIR. IF NOT BREATHING
    GIVE ARTIFICIAL RESPIRATION. IF BREATHING IS DIFFICULT, GIVE
    OXYGEN. CALL A PHYSICIAN.

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

Flash Point:NONE
Extinguishing Media:WATER SPRAY, 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 SELF-CONTAINED
    BREATHING APPARATUS, RUBBER BOOTS AND HEAVY RUBBER GLOVES. SWEEP
    UP, PLACE IN A BAG AND HOLD FOR WASTE DISPOSAL. AVOID RAISING 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:AVOID CONTACT AND INHALATION. DO NOT
    GET IN EYES, ON SKIN, ON CLOTHING. SEVERE EYE IRRITANT. KEEP
    TIGHTLY CLOSED. STORE IN A COOL, DRY PLACE.
Other Precautions:NONE SPECIFIED BY MANUFACTURER.

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

Respiratory Protection:WEAR NIOSH/MSHA APPROVED RESPIRATOR.
Ventilation:MECHANICAL EXHAUST REQUIRED.
Protective Gloves:RUBBER GLOVES.
Eye Protection:ANSI APPROVED CHEM WORKERS GOGGS(SUPDAT)
Other Protective Equipment:ANSI APPROVED EMERGENCY EYE WASH AND DELUGE
    SHOWER .
Work Hygienic Practices:WASH THOROUGHLY AFTER HANDLING.
Supplemental Safety and Health
EYE PROT:AND FULL LENGTH FACE SHIELD .

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

Melt/Freeze Pt:M.P/F.P Text:374F,190C
Appearance and Odor:NONE SPECIFIED BY MANUFACTURER.

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

Stability Indicator/Materials to Avoid:YES
STRONG OXIDIZING AGENTS.
Stability Condition to Avoid:NONE SPECIFIED BY MANUFACTURER.
Hazardous Decomposition Products:TOXIC FUMES OF:CARBON MONOXIDE, 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.

*** END OF RECORD ***