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ACRYLIC ACID
ICSC: 0688
Peer-Review Status: 12.04.2013 Validated
Ethylenecarboxylic acid
Acroleic acid
2-Propenoic acid 
CAS #: 79-10-7 RTECS #: AS4375000
UN #: 2218 (stabilized)
EC #: 607-061-00-8
EINECS #: 201-177-9
    Formula: C3H4O2 / CH2=CHCOOH
Molecular mass: 72.07

TYPES OF HAZARD
/ EXPOSURE
ACUTE HAZARDS / SYMPTOMS PREVENTION FIRST AID / FIRE-FIGHTING
FIRE Flammable. Many reactions may cause fire or explosion. Gives off irritating or toxic fumes (or gases) in a fire.  NO open flames, NO sparks and NO smoking.  Use water spray, alcohol-resistant foam, powder, carbon dioxide. 
EXPLOSION Above 48°C explosive vapour/air mixtures may be formed.  Above 48°C use a closed system, ventilation and explosion-proof electrical equipment. Vapours will be uninhibited and may polymerize in exhaust or ventilation facilities with risk of breakdown.  In case of fire: keep drums, etc., cool by spraying with water. Combat fire from a sheltered position. 
 
EXPOSURE   STRICT HYGIENE!   
Inhalation Cough. Sore throat. Burning sensation. Shortness of breath. Laboured breathing.  Use ventilation, local exhaust or breathing protection.  Fresh air, rest. Half-upright position. Refer for medical attention. 
Skin MAY BE ABSORBED! Redness. Pain. Serious skin burns.  Protective gloves. Protective clothing.  Remove contaminated clothes. Rinse skin with plenty of water or shower. Refer for medical attention . 
Eyes Redness. Pain. Corneal damage.  Wear face shield or eye protection in combination with breathing protection.  First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then refer for medical attention. 
Ingestion Burning sensation. Diarrhoea. Shock or collapse. Unconsciousness.  Do not eat, drink, or smoke during work.  Rinse mouth. Do NOT induce vomiting. Refer immediately for medical attention. 

SPILLAGE DISPOSAL
PACKAGING & LABELLING
Evacuate danger area! Consult an expert! Personal protection: complete protective clothing including self-contained breathing apparatus. Ventilation. Do NOT let this chemical enter the environment. Collect leaking liquid in sealable containers. Absorb remaining liquid in sand or inert absorbent. Then store and dispose of according to local regulations.  Do not transport with food and feedstuffs.
Can be stored only in glass, stainless steel, aluminium or polyethylene-lined container. 
EC Classification
Symbol: C, N; R: 10-20/21/22-35-50; S: (1/2)-26-36/37/39-45-61; Note: D 
UN Classification
UN Hazard Class: 8; UN Subsidiary Risks: 3; UN Pack Group: II 
GHS Classification
Signal: Danger
Flammable liquid and vapour
Toxic if swallowed, in contact with skin or if inhaled
Causes severe skin burns and eye damage
May cause respiratory irritation
Harmful to aquatic life 
flam;flamecorrskull;toxic

EMERGENCY RESPONSE SAFE STORAGE
NFPA Code: H3; F2; R2.  Fireproof. Separated from strong oxidants, strong bases, strong acids and food and feedstuffs. Keep in the dark. Store only if stabilized. Store in an area without drain or sewer access. Storage conditions may vary according to the type of inhibitor used. Refer to the manufacturer's instructions for proper storage conditions. See Notes. 

IMPORTANT DATA
Physical State; Appearance
COLOURLESS LIQUID WITH PUNGENT ODOUR. 

Physical dangers
Vapours are uninhibited and may polymerize in vents or flame arresters, causing blockage. 

Chemical dangers
The substance readily polymerizes due to heating, under the influence of light, oxygen, oxidizing agents such as peroxides or other activators (acid, iron salts). This generates fire or explosion hazard. Decomposes on heating. This produces toxic fumes. The substance is a medium strong acid. Reacts violently with strong bases and amines. Attacks many metals including nickel and copper. 

Occupational exposure limits
TLV: 2ppm, 5.9mg/m³ as TWA; (skin); A4 (not classifiable as a human carcinogen); (ACGIH 2012).
EU OEL ( selected):.
EU OEL ( selected): 10 ppm, 29 mg/m³ as TWA; 20 ppm, 59 mg/m³ as STEL;. 

Routes of exposure
The substance can be absorbed into the body by inhalation, through the skin and by ingestion. 

Inhalation risk
A harmful contamination of the air can be reached rather quickly on evaporation of this substance at 20°C , on spraying or dispersing much faster. 

Effects of short-term exposure
The substance is corrosive to the eyes and skin. Corrosive on ingestion. The vapour is severely irritating to the eyes and respiratory tract. 

Effects of long-term or repeated exposure
Repeated or prolonged contact with skin may cause dermatitis. The substance may have effects on the upper respiratory tract and lungs. This may result in reduced lung function and hyperreactivity of the airways. See Notes. 


PHYSICAL PROPERTIES ENVIRONMENTAL DATA
Boiling point: 141°C
Melting point: 14°C
Relative density (water = 1): 1.05
Solubility in water: miscible
Vapour pressure, Pa at 20°C: 413
Relative vapour density (air = 1): 2.5
Flash point: 48-55°C c.c.
Auto-ignition temperature: 395°C
Explosive limits, vol% in air: 3.9-19.8
Octanol/water partition coefficient as log Pow: 0.36 (estimated)
Relative density of the vapour/air-mixture at 20°C (air = 1): 1.01 
The substance is harmful to aquatic organisms. 

NOTES
Acrylic acid is commercially available in stabilized form by addition of polymerization inhibitors (see Chemical Dangers).
Acrylic acid solidifies below 14 °C leading to a localized depletion of stabilizer. Follow the manufacturer's instructions regarding thawing.
An added stabilizer or inhibitor can influence the toxicological properties of this substance; consult an expert.
Immediate administration of an appropriate inhalation therapy by a doctor, or by an authorized person, should be considered.
Someone who has shown signs of sensitivity to the substance should avoid any further contact with this substance or any other acrylates. 

ADDITIONAL INFORMATION
 

IPCS
International
Programme on
Chemical Safety
WHO ILO EC Prepared in the context of cooperation between the International Programme on Chemical Safety and the European Commission
© IPCS 2004-2012
LEGAL NOTICE Neither the EC nor the IPCS nor any person acting on behalf of the EC or the IPCS is responsible for the use which might be made of this information.


    See Also:
       Toxicological Abbreviations
       Acrylic acid (EHC 191, 1997)
       Acrylic acid (HSG 104, 1997)
       Acrylic acid  (IARC Summary & Evaluation, Volume 71, 1999)