
MSDS - ARSENIC TRIOXIDE

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   1 - PRODUCT IDENTIFICATION
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PRODUCT NAME:     ARSENIC TRIOXIDE
FORMULA:          AS2O3
FORMULA WT:         197.84
CAS NO.:           1327-53-3
NIOSH/RTECS NO.:  CG3325000
COMMON SYNONYMS:  ARSENIC OXIDE;  ARSENIC(III)OXIDE;  ARSENOUS TRIOXIDE;
                  ARSENOUS ACID
PRODUCT CODES:    0062,0061
  EFFECTIVE: 08/15/86     
  REVISION #02   

                            PRECAUTIONARY LABELLING
BAKER SAF-T-DATA(TM) SYSTEM

                      HEALTH        -  4  EXTREME (CANCER CAUSING)
                      FLAMMABILITY  -  0  NONE
                      REACTIVITY    -  1  SLIGHT
                      CONTACT       -  1  SLIGHT
HAZARD RATINGS ARE 0 TO 4 (0 = NO HAZARD; 4 = EXTREME HAZARD).

LABORATORY PROTECTIVE EQUIPMENT

GOGGLES; LAB COAT; VENT HOOD; PROPER GLOVES

PRECAUTIONARY LABEL STATEMENTS

                               POISON DANGER
                               CAUSES IRRITATION
                           MAY BE FATAL IF SWALLOWED
                  HARMFUL IF INHALED OR ABSORBED THROUGH SKIN
              CAUTION: CONTAINS INORGANIC ARSENIC, CANCER HAZARD
DO NOT GET IN EYES, ON SKIN, ON CLOTHING.
DO NOT BREATHE DUST.  KEEP IN TIGHTLY CLOSED CONTAINER.  USE WITH ADEQUATE
VENTILATION.  WASH THOROUGHLY AFTER HANDLING.

SAF-T-DATA(TM) STORAGE COLOR CODE:     BLUE (HEALTH)

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   2 - HAZARDOUS COMPONENTS
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                          COMPONENT                         %      CAS NO.

ARSENIC TRIOXIDE                                         90-100  1327-53-3

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   3 - PHYSICAL DATA
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BOILING POINT:      457 C (   855 F)          VAPOR PRESSURE(MM HG): N/A

MELTING POINT:      315 C (   599 F)          VAPOR DENSITY(AIR=1):  N/A

SPECIFIC GRAVITY:  3.87                       EVAPORATION RATE:      N/A   (H2O=1)                                       (BUTYL ACETATE=1)

SOLUBILITY(H2O):     SLIGHT (0.1 TO 1 %)           % VOLATILES BY VOLUME: 0

APPEARANCE & ODOR:  WHITE ODORLESS POWDER.

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   4 - FIRE AND EXPLOSION HAZARD DATA
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FLASH POINT (CLOSED CUP:  N/A

FLAMMABLE LIMITS:  UPPER - N/A  %       LOWER - N/A  %

FIRE EXTINGUISHING MEDIA
  USE EXTINGUISHING MEDIA APPROPRIATE FOR SURROUNDING FIRE.

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   5 - HEALTH HAZARD DATA
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THIS SUBSTANCE IS LISTED AS ACGIH SUSPECT HUMAN CARCINOGEN, NTP HUMAN
CARCINOGEN, AND IARC HUMAN CARCINOGEN (GROUP 1).

THRESHOLD LIMIT VALUE (TLV/TWA):   0.2  MG/M3 (       PPM)

PERMISSIBLE EXPOSURE LIMIT (PEL):  0.5  MG/M3 (       PPM)

TOXICITY:   LD50 (ORAL-RAT)(MG/KG)          -  15.1

CARCINOGENICITY:  NTP: YES    IARC: YES    Z LIST: YES    OSHA REG: YES

EFFECTS OF OVEREXPOSURE
  INGESTION IS HARMFUL AND MAY BE FATAL.
  INHALATION OF VAPORS MAY CAUSE HEADACHE, NAUSEA, VOMITING, DIZZINESS,
  DROWSINESS, IRRITATION OF RESPIRATORY TRACT, AND LOSS OF CONSCIOUSNESS.
  CONTACT WITH SKIN OR EYES MAY CAUSE IRRITATION.
  INGESTION MAY CAUSE NAUSEA, VOMITING, PARALYSIS.
  INGESTION MAY CAUSE GASTROINTESTINAL IRRITATION.

TARGET ORGANS
  LIVER, KIDNEYS, SKIN, LUNGS, LYMPHATIC SYSTEM

MEDICAL CONDITIONS GENERALLY AGGRAVATED BY EXPOSURE
  NONE IDENTIFIED

ROUTES OF ENTRY
  INHALATION, ABSORPTION, EYE CONTACT, SKIN CONTACT, INGESTION

EMERGENCY AND FIRST AID PROCEDURES
  CALL A PHYSICIAN.
  IF SWALLOWED, IF CONSCIOUS, IMMEDIATELY INDUCE VOMITING.
  IF INHALED, REMOVE TO FRESH AIR.  IF NOT BREATHING, GIVE ARTIFICIAL
  RESPIRATION.  IF BREATHING IS DIFFICULT, GIVE OXYGEN.
  IN CASE OF CONTACT, IMMEDIATELY FLUSH EYES OR SKIN WITH PLENTY OF WATER FOR
  AT LEAST 15 MINUTES.

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   6 - REACTIVITY DATA
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STABILITY:  STABLE                 HAZARDOUS POLYMERIZATION:  WILL NOT OCCUR

CONDITIONS TO AVOID:    NONE DOCUMENTED

INCOMPATIBLES:          STRONG OXIDIZING AGENTS, CHEMICALLY ACTIVE METALS,
                        ALUMINUM

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   7 - SPILL AND DISPOSAL PROCEDURES
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STEPS TO BE TAKEN IN THE EVENT OF A SPILL OR DISCHARGE
  WEAR SELF-CONTAINED BREATHING APPARATUS AND FULL PROTECTIVE CLOTHING.
  WITH CLEAN SHOVEL, CAREFULLY PLACE MATERIAL INTO CLEAN, DRY CONTAINER AND
  COVER; REMOVE FROM AREA.  FLUSH SPILL AREA WITH WATER.

DISPOSAL PROCEDURE
  DISPOSE IN ACCORDANCE WITH ALL APPLICABLE FEDERAL, STATE, AND LOCAL
  ENVIRONMENTAL REGULATIONS.

EPA HAZARDOUS WASTE NUMBER:          P012 (ACUTE HAZARDOUS WASTE)

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   8 - PROTECTIVE EQUIPMENT
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VENTILATION:             USE GENERAL OR LOCAL EXHAUST VENTILATION TO MEET
                         TLV REQUIREMENTS.

RESPIRATORY PROTECTION:  NONE REQUIRED WHERE ADEQUATE VENTILATION
                         CONDITIONS EXIST.  IF AIRBORNE CONCENTRATION
                         EXCEEDS TLV, A DUST/MIST RESPIRATOR IS
                         RECOMMENDED.  IF CONCENTRATION EXCEEDS CAPACITY OF
                         RESPIRATOR, A SELF-CONTAINED BREATHING APPARATUS
                         IS ADVISED.

EYE/SKIN PROTECTION:     SAFETY GOGGLES, UNIFORM, APRON, PROPER GLOVES ARE
                         RECOMMENDED.

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   9 - STORAGE AND HANDLING PRECAUTIONS
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SAF-T-DATA(TM) STORAGE COLOR CODE:     BLUE (HEALTH)

SPECIAL PRECAUTIONS
  KEEP CONTAINER TIGHTLY CLOSED.  STORE IN SECURE POISON AREA.

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  10 - TRANSPORTATION DATA AND ADDITIONAL INFORMATION
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DOMESTIC (D.O.T.)

PROPER SHIPPING NAME     ARSENIC TRIOXIDE, SOLID
HAZARD CLASS             POISON B
UN/NA                    UN1561
LABELS                   POISON
REPORTABLE QUANTITY      5000 LBS.

INTERNATIONAL (I.M.O.)

PROPER SHIPPING NAME     ARSENIC TRIOXIDE
HAZARD CLASS             6.1
UN/NA                    UN1561
LABELS                   POISON

