Bichloroacetic acid
Dichlorethanoic acid
DCA
2,2-Dichloroacetic acid
C2H2Cl2O2 / CHCl2COOH
Molecular mass: 128.9
ICSC # 0868
CAS # 79-43-6
RTECS # AG6125000
UN # 1764
EC # 607-066-00-5
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Types of Hazard/ Exposure
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Acute Hazards/ Symptoms
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Prevention
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First Aid/
Fire Fighting
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FIRE
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Not combustible.
Gives off irritating or toxic fumes (or gases) in a fire.
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In case of fire in the surroundings: use appropriate extinguishing media.
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Explosion
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Exposure
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AVOID ALL CONTACT!
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IN ALL CASES CONSULT A DOCTOR!
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•Inhalation
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Burning sensation.
Sore throat.
Cough.
Laboured breathing.
Shortness of breath.
Symptoms may be delayed (see Notes).
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Ventilation, local exhaust, or breathing protection.
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Fresh air, rest.
Half-upright position.
Refer for medical attention.
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•Skin
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Redness.
Pain.
Blisters.
Serious
skin burns.
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Protective gloves.
Protective clothing.
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Remove contaminated clothes.
Rinse skin with plenty of water or shower.
Refer for medical attention.
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•Eyes
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Redness.
Pain.
Severe deep burns.
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Face shield
or
eye protection in combination with breathing protection.
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First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then take to a doctor.
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•Ingestion
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Abdominal pain.
Burning sensation.
Shock or collapse.
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Do not eat, drink, or smoke during work.
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Rinse mouth.
Do NOT induce vomiting.
Refer for medical attention.
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Spillage Disposal
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Storage
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Packaging & Labelling
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Personal protection: complete protective clothing including self-contained breathing apparatus.
Do NOT let this chemical enter the environment.
Collect leaking liquid in sealable containers.
Cautiously neutralize remainder.
Then wash away with plenty of water.
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Separated from
metals
,
combustible and reducing substances,
strong oxidants,
strong bases,
food and feedstuffs
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Well closed.
Ventilation along the floor.
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Unbreakable packaging; put breakable packaging into closed unbreakable container.
Do not transport with food and feedstuffs.
C symbol
N symbol
R: 35-50
S: 1/2-26-45-61
UN Hazard Class: 8
UN Packing Group: II
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Important Data
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Physical State; Appearance:
COLOURLESS LIQUID
, WITH PUNGENT ODOUR.
Physical Dangers:
Chemical Dangers:
The substance decomposes
on heating
producing
toxic and corrosive fumes
including
hydrogen chloride
.
The substance is a strong acid, it reacts violently with bases and is corrosive.
Attacks many metals forming flammable/explosive gas (hydrogen - see ICSC 0001).
Occupational Exposure Limits:
TLV: 0.5 ppm as TWA; (skin); A3 (confirmed animal carcinogen with unknown relevance to humans); (ACGIH 2005).
MAK not established.
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Routes of Exposure:
The substance can be absorbed into the body
by inhalation of its aerosol
and
through the skin.
Inhalation Risk:
No indication can be given about the rate in which a harmful concentration in the air is reached on evaporation of this substance at 20°C.
Effects of Short-Term Exposure:
Corrosive.
The substance
is corrosive to
the eyes,
the skin
and
the respiratory tract.
Corrosive on ingestion.
Inhalation of the vapour may cause lung oedema (see Notes).
Exposure may result in death.
Medical observation is indicated.
Effects of Long-Term or Repeated Exposure:
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Physical
Properties
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Boiling point: 194°C
Melting point: 13.5°C
Relative density (water = 1): 1.56
Solubility in water:
miscible
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Vapour pressure, Pa at 20°C: 19
Relative vapour density (air = 1): 4.4
Octanol/water partition coefficient as log Pow: 0.92
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Environmental
Data
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The substance is harmful to aquatic organisms.
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N O T E S
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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.
NEVER pour water into this substance; when dissolving or diluting always add it slowly to the water.
Card has been partly updated in October 2005. See sections Occupational Exposure Limits, Emergency Response.
Transport Emergency Card: TEC (R)-80GC3-II+III
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ADDITIONAL INFORMATION
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ICSC: 0868
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DICHLOROACETIC ACID
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(C) IPCS, CEC, 1994
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IMPORTANT LEGAL NOTICE:
Neither NIOSH, the CEC or the IPCS nor any person acting on behalf of NIOSH,
the CEC or the IPCS is responsible for the use which might be made of this
information. This card contains the collective views of the IPCS Peer Review Committee and may
not reflect in all cases all the detailed requirements included in national legislation
on the subject. The user should verify compliance of the cards with the relevant legislation
in the country of use.
The only modifications made to produce the U.S. version is inclusion of the OSHA PELs, NIOSH RELs and NIOSH IDLH values.
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