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