PRODUCT #: T4155        NAME: 2,3,5-TRIPHENYLTETRAZOLIUM CHLORIDE

                     MATERIAL SAFETY DATA SHEET, Valid 11/97 - 1/98

                        Printed Thursday, March 20, 1903 3:58PM



Sigma Chemical Co.         Aldrich Chemical Co., Inc.     Fluka Chemical Corp.

P.O. Box 14508             1001 West St. Paul             1001 West St. Paul

St. Louis, MO 63178        Milwaukee, WI 53233            Milwaukee, WI 53233

Phone: 314-771-5765        Phone: 414-273-3850            Phone: 414-273-3850









SECTION 1. - - - - - - - - - CHEMICAL IDENTIFICATION- - - - - - - - - -

    CATALOG #:            T4155

    NAME:                 2,3,5-TRIPHENYLTETRAZOLIUM CHLORIDE

SECTION 2. - - - - - COMPOSITION/INFORMATION ON INGREDIENTS - - - - - -

    CAS #:   298-96-4

    MF: C19H15CLN4

    EC NO: 206-071-6

  SYNONYMS

    PTB * RED TETRAZOLIUM * TETRZOLIUM CHLORIDE * TPTZ * 2,3,5-TRIPHENYL-

    2H-TETRAZOLIUM CHLORIDE * TT * TTC * UROCHECK * UROSCREEN * VITASTAIN

    *

SECTION 3. - - - - - - - - - - HAZARDS IDENTIFICATION - - - - - - - - -

  LABEL PRECAUTIONARY STATEMENTS

    CAUTION:

    AVOID CONTACT AND INHALATION.

SECTION 4. - - - - - - - - - - FIRST-AID MEASURES- - - - - - - - - - -

    IN CASE OF CONTACT, IMMEDIATELY FLUSH EYES WITH COPIOUS AMOUNTS OF

    WATER FOR AT LEAST 15 MINUTES.

    IN CASE OF CONTACT, IMMEDIATELY WASH SKIN WITH SOAP AND COPIOUS

    AMOUNTS OF WATER.

    IF INHALED, REMOVE TO FRESH AIR. IF NOT BREATHING GIVE ARTIFICIAL

    RESPIRATION. IF BREATHING IS DIFFICULT, GIVE OXYGEN.

    IF SWALLOWED, WASH OUT MOUTH WITH WATER PROVIDED PERSON IS CONSCIOUS.

    CALL A PHYSICIAN IMMEDIATELY.

    WASH CONTAMINATED CLOTHING BEFORE REUSE.

SECTION 5. - - - - - - - - - FIRE FIGHTING MEASURES - - - - - - - - - -

  EXTINGUISHING MEDIA

    WATER SPRAY.

    CARBON DIOXIDE, DRY CHEMICAL POWDER OR APPROPRIATE FOAM.

  SPECIAL FIREFIGHTING PROCEDURES

    WEAR SELF-CONTAINED BREATHING APPARATUS AND PROTECTIVE CLOTHING TO

    PREVENT CONTACT WITH SKIN AND EYES.

  UNUSUAL FIRE AND EXPLOSIONS HAZARDS

    EMITS TOXIC FUMES UNDER FIRE CONDITIONS.

SECTION 6. - - - - - - - - ACCIDENTAL RELEASE MEASURES- - - - - - - - -

    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 MATERIAL PICKUP IS COMPLETE.

SECTION 7. - - - - - - - - - - HANDLING AND STORAGE- - - - - - - - - - -

    REFER TO SECTION 8.

SECTION 8. - - - - - - EXPOSURE CONTROLS/PERSONAL PROTECTION- - - - - -

    CHEMICAL SAFETY GOGGLES.

    NIOSH/MSHA-APPROVED RESPIRATOR.

    MECHANICAL EXHAUST REQUIRED.

    COMPATIBLE CHEMICAL-RESISTANT GLOVES.

    AVOID BREATHING DUST.

    AVOID CONTACT WITH EYES, SKIN AND CLOTHING.



                                          Page 1

           PRODUCT #: T4155        NAME: 2,3,5-TRIPHENYLTETRAZOLIUM CHLORIDE

                     MATERIAL SAFETY DATA SHEET, Valid 11/97 - 1/98

                        Printed Thursday, March 20, 1903 3:58PM



    WASH THOROUGHLY AFTER HANDLING.

    KEEP CONTAINER CLOSED.

    LIGHT SENSITIVE

    STORE IN A COOL DRY PLACE.

SECTION 9. - - - - - - - PHYSICAL AND CHEMICAL PROPERTIES - - - - - - -

  APPEARANCE AND ODOR

    OFF-WHITE POWDER

  PHYSICAL PROPERTIES

    MELTING POINT:      250 C

SECTION 10. - - - - - - - - -STABILITY AND REACTIVITY - - - - - - - - -

  INCOMPATIBILITIES

    STRONG OXIDIZING AGENTS

    MAY DISCOLOR ON EXPOSURE TO LIGHT.

  HAZARDOUS COMBUSTION OR DECOMPOSITION PRODUCTS

    TOXIC FUMES OF:

    CARBON MONOXIDE, CARBON DIOXIDE

    NITROGEN OXIDES

    HYDROGEN CHLORIDE GAS

SECTION 11. - - - - - - - - - TOXICOLOGICAL INFORMATION - - - - - - - -

  ACUTE EFFECTS

    MAY BE HARMFUL BY INHALATION, INGESTION, OR SKIN ABSORPTION.

    MAY CAUSE IRRITATION.

    TO THE BEST OF OUR KNOWLEDGE, THE CHEMICAL, PHYSICAL, AND

    TOXICOLOGICAL PROPERTIES HAVE NOT BEEN THOROUGHLY INVESTIGATED.

  RTECS #: XF8100000

    2H-TETRAZOLIUM, 2,3,5-TRIPHENYL-, CHLORIDE

  TOXICITY DATA

    IVN-MUS LD50:5600 UG/KG                       CSLNX* NX#00925

    ONLY SELECTED REGISTRY OF TOXIC EFFECTS OF CHEMICAL SUBSTANCES

    (RTECS) DATA IS PRESENTED HERE. SEE ACTUAL ENTRY IN RTECS FOR

    COMPLETE INFORMATION.

SECTION 12. - - - - - - - - - ECOLOGICAL INFORMATION - - - - - - - - - -

    DATA NOT YET AVAILABLE.

SECTION 13. - - - - - - - - - DISPOSAL CONSIDERATIONS - - - - - - - - -

    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.

SECTION 14. - - - - - - - - - - TRANSPORT INFORMATION - - - - - - - - -

    CONTACT SIGMA CHEMICAL COMPANY FOR TRANSPORTATION INFORMATION.

SECTION 15. - - - - - - - - - REGULATORY INFORMATION - - - - - - - - - -

  REVIEWS, STANDARDS, AND REGULATIONS

    OEL=MAK

    NOHS 1974: HZD 83592; NIS 1; TNF 11; NOS 1; TNE 32

    NOES 1983: HZD 83592; NIS 1; TNF 32; NOS 2; TNE 1665; TFE 1207

    EPA TSCA SECTION 8(B) CHEMICAL INVENTORY

SECTION 16. - - - - - - - - - - OTHER INFORMATION- - - - - - - - - - - -

    THE ABOVE INFORMATION IS BELIEVED TO BE CORRECT BUT DOES NOT PURPORT TO

    BE ALL INCLUSIVE AND SHALL BE USED ONLY AS A GUIDE. SIGMA, ALDRICH,

    FLUKA SHALL NOT BE HELD LIABLE FOR ANY DAMAGE RESULTING FROM HANDLING

    OR FROM CONTACT WITH THE ABOVE PRODUCT. SEE REVERSE SIDE OF INVOICE OR

    PACKING SLIP FOR ADDITIONAL TERMS AND CONDITIONS OF SALE.

    COPYRIGHT 1997 SIGMA CHEMICAL CO., ALDRICH CHEMICAL CO., INC.,

    FLUKA CHEMIE AG

    LICENSE GRANTED TO MAKE UNLIMITED PAPER COPIES FOR INTERNAL USE ONLY









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