Valid 11/1999 - 01/2000



Sigma Chemical Co.

P.O. Box 14508

St. Louis, MO 63178 USA

Tel: 314-771-5765









             MATERIAL         SAFETY       DATA     SHEET



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

    CATALOG #:            A7302

    NAME:                 AMMONIUM MOLYBDATE TETRAHYDRATE

                          ACS REAGENT

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

    CAS #: 12054-85-2

    MF: H24MO7N6O24

  SYNONYMS

    AMMONIUM HEPTAMOLYBDATE * AMMONIUM MOLYBDATE(II) ((NH4)6MO7O24) *

    AMMONIUM PARAMOLYBDATE * MOLYBDATE, HEXAAMMONIUM (9CI) *

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

  LABEL PRECAUTIONARY STATEMENTS

    IRRITANT

    IRRITATING TO EYES, RESPIRATORY SYSTEM AND SKIN.

    IN CASE OF CONTACT WITH EYES, RINSE IMMEDIATELY WITH PLENTY OF

    WATER AND SEEK MEDICAL ADVICE.

    WEAR SUITABLE PROTECTIVE CLOTHING.

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

    IN CASE OF CONTACT, IMMEDIATELY FLUSH EYES OR SKIN WITH COPIOUS

    AMOUNTS OF WATER FOR AT LEAST 15 MINUTES WHILE REMOVING CONTAMINATED

    CLOTHING AND SHOES.

    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.

    WASH CONTAMINATED CLOTHING BEFORE REUSE.

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

  EXTINGUISHING MEDIA

    NONCOMBUSTIBLE.

    USE EXTINGUISHING MEDIA APPROPRIATE TO SURROUNDING FIRE CONDITIONS.

  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- - - - - - - - -

    EVACUATE AREA.

    WEAR 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 SPILL SITE AFTER MATERIAL PICKUP IS COMPLETE.

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

    REFER TO SECTION 8.

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

    WEAR APPROPRIATE NIOSH/MSHA-APPROVED RESPIRATOR, CHEMICAL-RESISTANT

    GLOVES, SAFETY GOGGLES, OTHER PROTECTIVE CLOTHING.

    SAFETY SHOWER AND EYE BATH.

    USE ONLY IN A CHEMICAL FUME HOOD.

    DO NOT BREATHE DUST.

    DO NOT GET IN EYES, ON SKIN, ON CLOTHING.

    AVOID PROLONGED OR REPEATED EXPOSURE.

    WASH THOROUGHLY AFTER HANDLING.

    KEEP TIGHTLY CLOSED.

    STORE IN A COOL DRY PLACE.

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

  APPEARANCE AND ODOR

    SOLID.

  PHYSICAL PROPERTIES

    SPECIFIC GRAVITY:     2.498

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

  INCOMPATIBILITIES

    STRONG OXIDIZING AGENTS

    STRONG ACIDS

  HAZARDOUS COMBUSTION OR DECOMPOSITION PRODUCTS

    AMMONIA

    NITROGEN OXIDES

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

  ACUTE EFFECTS

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

    CAUSES EYE AND SKIN IRRITATION.

    MATERIAL IS IRRITATING TO MUCOUS MEMBRANES AND UPPER

    RESPIRATORY TRACT.

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

    TOXICOLOGICAL PROPERTIES HAVE NOT BEEN THOROUGHLY INVESTIGATED.

  RTECS #: QA5076000

    MOLYBDIC ACID, HEXAAMMONIUM SALT

    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 - - - - - - - - -

    CONTACT A LICENSED PROFESSIONAL WASTE DISPOSAL SERVICE TO DISPOSE OF

    THIS MATERIAL.

    OBSERVE ALL FEDERAL, STATE AND LOCAL ENVIRONMENTAL REGULATIONS.

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

    CONTACT SIGMA CHEMICAL COMPANY FOR TRANSPORTATION INFORMATION.

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

  EUROPEAN INFORMATION

    CAUTION: SUBSTANCE NOT YET FULLY TESTED.

    IRRITANT

    R 36/37/38

    IRRITATING TO EYES, RESPIRATORY SYSTEM AND SKIN.

    S 26

    IN CASE OF CONTACT WITH EYES, RINSE IMMEDIATELY WITH PLENTY OF

    WATER AND SEEK MEDICAL ADVICE.

    S 36

    WEAR SUITABLE PROTECTIVE CLOTHING.

  TLV AND SOURCE

    FOR SOLUBLE MOLYBEDENUM COMPOUNDS AS MOLYBEDENUM:

    ACGIH TLV-TWA: 5 MG/M3.

    OSHA PEL: 8H TWA 5 MG/M3.

  REVIEWS, STANDARDS, AND REGULATIONS

    OEL=MAK

    NOHS 1974: HZD 80790; NIS 31; TNF 1606; NOS 27; TNE 12930

    NOES 1983: HZD 80790; NIS 34; TNF 2676; NOS 33; TNE 30922; TFE 15271

    EPA GENETOX PROGRAM 1988, POSITIVE: B SUBTILIS REC ASSAY

    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 1998 SIGMA-ALDRICH CO.

LICENSE GRANTED TO MAKE UNLIMITED PAPER COPIES FOR INTERNAL USE ONLY