MSDS for ACETIC ANHYDRIDE
1 - PRODUCT IDENTIFICATION
PRODUCT NAME: ACETIC ANHYDRIDE
FORMULA: (CH3CO)2O
FORMULA WT: 102.09
CAS NO.: 108-24-7
NIOSH/RTECS NO.: AK1925000
COMMON SYNONYMS: ACETIC ACID ANHYDRIDE; ACETIC OXIDE; ETHANOIC ANHYDRIDE
PRODUCT CODES: 0018
EFFECTIVE: 08/06/86
REVISION #02
PRECAUTIONARY LABELLING
BAKER SAF-T-DATA(TM) SYSTEM
HEALTH - 3 SEVERE (POISON)
FLAMMABILITY - 2 MODERATE
REACTIVITY - 2 MODERATE
CONTACT - 3 SEVERE (CORROSIVE)
HAZARD RATINGS ARE 0 TO 4 (0 = NO HAZARD; 4 = EXTREME HAZARD).
LABORATORY PROTECTIVE EQUIPMENT
GOGGLES & SHIELD; LAB COAT & APRON; VENT HOOD; PROPER GLOVES; CLASS B
EXTINGUISHER
PRECAUTIONARY LABEL STATEMENTS
POISON DANGER
COMBUSTIBLE
CAUSES SEVERE BURNS
HARMFUL IF SWALLOWED OR INHALED
KEEP AWAY FROM HEAT, SPARKS, FLAME. DO NOT GET IN EYES, ON SKIN, ON CLOTHING.
DO NOT BREATHE VAPOR. KEEP IN TIGHTLY CLOSED CONTAINER. USE WITH
ADEQUATE VENTILATION. WASH THOROUGHLY AFTER HANDLING. IN CASE OF FIRE,
USE ALCOHOL FOAM, DRY CHEMICAL, CARBON DIOXIDE - WATER MAY BE INEFFECTIVE.
FLUSH SPILL AREA WITH WATER SPRAY.
SAF-T-DATA(TM) STORAGE COLOR CODE: RED STRIPE (STORE SEPARATELY)
2 - HAZARDOUS COMPONENTS
COMPONENT % CAS NO.
ACETIC ANHYDRIDE 90-100 108-24-7
3 - PHYSICAL DATA
BOILING POINT: 139 C ( 282 F) VAPOR PRESSURE(MM HG): 4
MSDS for ACETIC ANHYDRIDE Page 2
MELTING POINT: -73 C ( -99 F) VAPOR DENSITY(AIR=1): 3.5
SPECIFIC GRAVITY: 1.08 EVAPORATION RATE: .46
(H2O=1) (BUTYL ACETATE=1)
SOLUBILITY(H2O): APPRECIABLE (MORE THAN 10 %) % VOLATILES BY VOLUME: 100
APPEARANCE & ODOR: COLORLESS LIQUID WITH STRONG ACETIC ACID ODOR.
4 - FIRE AND EXPLOSION HAZARD DATA
FLASH POINT (CLOSED CUP: 54 C ( 129 F) NFPA 704M RATING: 2-2-1 W
FLAMMABLE LIMITS: UPPER - 10.1 % LOWER - 2.7 %
FIRE EXTINGUISHING MEDIA
USE ALCOHOL FOAM, DRY CHEMICAL OR CARBON DIOXIDE.
(WATER MAY BE INEFFECTIVE.)
SPECIAL FIRE-FIGHTING PROCEDURES
FIREFIGHTERS SHOULD WEAR PROPER PROTECTIVE EQUIPMENT AND SELF-CONTAINED
BREATHING APPARATUS WITH FULL FACEPIECE OPERATED IN POSITIVE PRESSURE MODE.
MOVE CONTAINERS FROM FIRE AREA IF IT CAN BE DONE WITHOUT RISK. USE WATER
TO KEEP FIRE-EXPOSED CONTAINERS COOL.
UNUSUAL FIRE & EXPLOSION HAZARDS
VAPORS MAY FLOW ALONG SURFACES TO DISTANT IGNITION SOURCES AND FLASH BACK.
CLOSED CONTAINERS EXPOSED TO HEAT MAY EXPLODE.
REACTS VIOLENTLY WITH WATER.
TOXIC GASES PRODUCED
ACETIC ACID
5 - HEALTH HAZARD DATA
TLV LISTED DENOTES CEILING LIMIT.
THRESHOLD LIMIT VALUE (TLV/TWA): 20 MG/M3 ( 5 PPM)
PERMISSIBLE EXPOSURE LIMIT (PEL): 20 MG/M3 ( 5 PPM)
TOXICITY: LD50 (ORAL-RAT)(MG/KG) - 1780
LD50 (SKIN-RABBIT)(MG/KG) - 4000
CARCINOGENICITY: NTP: NO IARC: NO Z LIST: NO OSHA REG: NO
EFFECTS OF OVEREXPOSURE
INGESTION MAY CAUSE SEVERE BURNING OF MOUTH AND STOMACH.
INHALATION OF VAPORS MAY CAUSE SEVERE IRRITATION OF THE RESPIRATORY SYSTEM.
CONTACT WITH SKIN OR EYES MAY CAUSE SEVERE IRRITATION OR BURNS.
TARGET ORGANS
MSDS for ACETIC ANHYDRIDE Page 3
RESPIRATORY SYSTEM, EYES, SKIN, TEETH
MEDICAL CONDITIONS GENERALLY AGGRAVATED BY EXPOSURE
NONE IDENTIFIED
ROUTES OF ENTRY
INHALATION, INGESTION, EYE CONTACT, SKIN CONTACT
EMERGENCY AND FIRST AID PROCEDURES
CALL A PHYSICIAN.
IF SWALLOWED, DO NOT INDUCE VOMITING; IF CONSCIOUS, GIVE WATER, MILK, OR
MILK OF MAGNESIA.
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 WHILE REMOVING CONTAMINATED CLOTHING AND SHOES.
WASH CLOTHING BEFORE RE-USE.
6 - REACTIVITY DATA
STABILITY: STABLE HAZARDOUS POLYMERIZATION: WILL NOT OCCUR
CONDITIONS TO AVOID: HEAT, SOURCES OF IGNITION, FLAME, MOISTURE
INCOMPATIBLES: WATER, STRONG OXIDIZING AGENTS, STRONG BASES, ALCOHOLS
7 - SPILL AND DISPOSAL PROCEDURES
STEPS TO BE TAKEN IN THE EVENT OF A SPILL OR DISCHARGE
WEAR SELF-CONTAINED BREATHING APPARATUS AND FULL PROTECTIVE CLOTHING.
SHUT OFF IGNITION SOURCES; NO FLARES, SMOKING, OR FLAMES IN AREA. STOP
LEAK IF YOU CAN DO SO WITHOUT RISK. NEUTRALIZE SPILL WITH SODA ASH OR
LIME. WITH CLEAN SHOVEL, CAREFULLY PLACE MATERIAL INTO CLEAN, DRY
CONTAINER AND COVER. REMOVE FROM SPILL AREA. FLUSH AREA WITH WATER.
DISPOSAL PROCEDURE
DISPOSE IN ACCORDANCE WITH ALL APPLICABLE FEDERAL, STATE, AND LOCAL
ENVIRONMENTAL REGULATIONS.
EPA HAZARDOUS WASTE NUMBER: D001, D002 (IGNITABLE, CORROSIVE WASTE)
8 - PROTECTIVE EQUIPMENT
VENTILATION: USE GENERAL OR LOCAL EXHAUST VENTILATION TO MEET
TLV REQUIREMENTS.
RESPIRATORY PROTECTION: RESPIRATORY PROTECTION REQUIRED IF AIRBORNE
CONCENTRATION EXCEEDS TLV. AT CONCENTRATIONS UP
TO 250 PPM, A CHEMICAL CARTRIDGE RESPIRATOR WITH
ORGANIC VAPOR CARTRIDGE IS RECOMMENDED. ABOVE
THIS LEVEL, A SELF-CONTAINED BREATHING APPARATUS
IS RECOMMENDED.
MSDS for ACETIC ANHYDRIDE Page 4
EYE/SKIN PROTECTION: SAFETY GOGGLES AND FACE SHIELD, UNIFORM,
PROTECTIVE SUIT, PROPER GLOVES ARE RECOMMENDED.
9 - STORAGE AND HANDLING PRECAUTIONS
SAF-T-DATA(TM) STORAGE COLOR CODE: RED STRIPE (STORE SEPARATELY)
SPECIAL PRECAUTIONS
KEEP CONTAINER TIGHTLY CLOSED. STORE IN A COOL, DRY, WELL-VENTILATED,
FLAMMABLE LIQUID STORAGE AREA OR CABINET.
BOND AND GROUND CONTAINERS WHEN TRANSFERRING LIQUID.
10 - TRANSPORTATION DATA AND ADDITIONAL INFORMATION
DOMESTIC (D.O.T.)
PROPER SHIPPING NAME ACETIC ANHYDRIDE
HAZARD CLASS CORROSIVE MATERIAL (LIQUID)
UN/NA UN1715
LABELS CORROSIVE
REPORTABLE QUANTITY 5000 LBS.
INTERNATIONAL (I.M.O.)
PROPER SHIPPING NAME ACETIC ANHYDRIDE
HAZARD CLASS 8, 3.3
UN/NA UN1715
LABELS CORROSIVE, FLAMMABLE LIQUID