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CHLOROACETIC ACID
ICSC: 0235
Peer-Review Status: 05.05.2003 Validated
Chloroethanoic acid
Monochloroacetic acid
MCA 
CAS #: 79-11-8 RTECS #: AF8575000
UN #: 1751
EC #: 607-003-00-1
EINECS #: 201-178-4
    Formula: C2H3ClO2 / ClCH2COOH
Molecular mass: 94.5

TYPES OF
HAZARD /
EXPOSURE
ACUTE HAZARDS / SYMPTOMS      PREVENTION      FIRST AID / FIRE FIGHTING
FIRE Combustible. Gives off irritating or toxic fumes (or gases) in a fire.  NO open flames.  Use water spray, powder, alcohol-resistant foam, carbon dioxide. 
EXPLOSION     In case of fire: keep drums, etc., cool by spraying with water. 
 
EXPOSURE   AVOID ALL CONTACT!  IN ALL CASES CONSULT A DOCTOR! 
Inhalation Burning sensation. Cough. Sore throat. Laboured breathing. Vomiting. Convulsions. Unconciousness. Symptoms may be delayed. See Notes.  Use ventilation, local exhaust or breathing protection.  Fresh air, rest. Half-upright position. Artificial respiration may be needed. Refer for medical attention. 
Skin MAY BE ABSORBED! Redness. Pain. Skin burns.  Protective gloves. Protective clothing.  Remove contaminated clothes. Rinse skin with plenty of water or shower. Refer for medical attention . 
Eyes Redness. Pain. Severe deep burns.  Wear face shield or eye protection in combination with breathing protection if powder.  First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then refer for medical attention. 
Ingestion Abdominal pain. Burning sensation. Shock or collapse. Convulsions. Unconsciousness.  Do not eat, drink, or smoke during work.  Rinse mouth. Do NOT induce vomiting. Give one or two glasses of water to drink. Refer for medical attention . 

SPILLAGE DISPOSAL
PACKAGING & LABELLING
Personal protection: chemical protection suit including self-contained breathing apparatus. Sweep spilled substance into covered containers. If appropriate, moisten first to prevent dusting. Carefully collect remainder. Then store and dispose of according to local regulations.  Do not transport with food and feedstuffs. 
EC Classification
Symbol: T, N; R: 25-34-50; S: (1/2)-23-37-45-61 
UN Classification
UN Hazard Class: 6.1; UN Subsidiary Risks: 8; UN Pack Group: II 
GHS Classification
 

EMERGENCY RESPONSE SAFE STORAGE
Transport Emergency Card: TEC (R)-61S1751.
NFPA Code: H3; F1; R0. 
Separated from strong bases and food and feedstuffs. Dry. Well closed. 

IMPORTANT DATA
Physical State; Appearance
COLOURLESS HYGROSCOPIC CRYSTALS WITH PUNGENT ODOUR. 

Physical dangers
 

Chemical dangers
Decomposes on burning. This produces toxic fumes including hydrogen chloride and phosgene. The solution in water is a medium strong acid. Attacks metals. 

Occupational exposure limits
TLV (NOT-ESTABLISHED):. 

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

Inhalation risk
No indication can be given about the rate at which a harmful concentration of this substance in the air is reached on evaporation at 20°C. 

Effects of short-term exposure
The substance is corrosive to the eyes, skin and respiratory tract. Inhalation of of the aerosol may cause lung oedema. See Notes. The substance may cause effects on the cardiovascular system and central nervous system. This may result in cardiac disorders, convulsions and kidney impairment. Exposure at high levels could cause death. The effects may be delayed. Medical observation is indicated. 

Effects of long-term or repeated exposure
 


PHYSICAL PROPERTIES ENVIRONMENTAL DATA
Boiling point: 189°C
Melting point: see Notes
Density: 1.58 g/cm³
Solubility in water: very good
Vapour pressure, Pa at 25°C: 8.68
Relative vapour density (air = 1): 3.26
Flash point: 126°C c.c.
Auto-ignition temperature: 470°C
Explosive limits, vol% in air: 8 -?
Octanol/water partition coefficient as log Pow: 0.34  
The substance is harmful to aquatic organisms. 

NOTES
Melting point of alpha form = 63°C, beta form = 56.2°C, gamma form = 52.5°C.
The symptoms of lung oedema often do not become manifest until a few hours have passed and they are aggravated by physical effort.
Rest and medical observation are therefore essential.
Immediate administration of an appropriate inhalation therapy by a doctor or a person authorized by him/her, should be considered.
Other UN numbers: 1750 Chloroacetic acid, solution; 3250 Chloroacetic acid, molten.
Card has been partly updated in October 2005.
See section Occupational Exposure Limits. 

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
       Chloroacetic acid (SIDS)