2-Chloroacetaldehyde
2-Chloro-1-ethanal
Monochloroacetaldehyde
C2H3ClO / ClCH2CHO
Molecular mass: 78.5
ICSC # 0706
CAS # 107-20-0
RTECS # AB2450000
UN # 2232
EC # 605-025-00-6
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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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Combustible.
Gives off irritating or toxic fumes (or gases) in a fire.
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NO open flames.
NO contact with oxidants and acid(s).
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Powder, alcohol-resistant foam, water spray, carbon dioxide.
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Explosion
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Above 88°C explosive vapour/air mixtures may be formed.
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Above 88°C use a closed system, ventilation, and explosion-proof electrical equipment.
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In case of fire: keep drums, etc., cool by spraying with water.
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Exposure
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AVOID ALL CONTACT!
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•Inhalation
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Burning sensation.
Cough.
Laboured breathing.
Sore throat.
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.
Artificial respiration may be needed.
Refer for medical attention.
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•Skin
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Redness.
Serious
skin burns.
Pain.
Blisters.
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Protective gloves.
Protective clothing.
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Remove contaminated clothes.
Rinse and then wash skin with water and soap.
Refer for medical attention.
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•Eyes
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Redness.
Pain.
Permanent
loss of vision.
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.
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Do not eat, drink, or smoke during work.
Wash hands before eating.
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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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Evacuate danger area!
Consult an expert!
Ventilation.
Collect leaking and spilled liquid in sealable containers as far as possible.
Wash away remainder with plenty of water.
Personal protection: complete protective clothing including self-contained breathing apparatus.
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Separated from
strong oxidants,
acids,
metals
,
food and feedstuffs
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Unbreakable packaging; put breakable packaging into closed unbreakable container.
Do not transport with food and feedstuffs.
T+ symbol
N symbol
R: 24/25-26-34-40-50
S: 1/2-26-28-36/37/39-45-61
UN Hazard Class: 6.1
UN Packing Group: I
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Important Data
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Physical State; Appearance:
CLEAR COLOURLESS LIQUID
, WITH PUNGENT ODOUR.
Physical Dangers:
The vapour is heavier than air.
Chemical Dangers:
The substance decomposes
on heating
producing
toxic fumes
of
chlorine
.
Reacts
with
oxidants
and
acids
causing explosion hazard.
Occupational Exposure Limits:
TLV: 1 ppm (Ceiling value); (ACGIH 2005).
MAK: skin absorption (H);
Carcinogen category: 3B;
(DFG 2005).
OSHA PEL: C 1 ppm (3 mg/m3)
NIOSH REL: C 1 ppm (3 mg/m3)
NIOSH IDLH: 45 ppm See: 107200
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Routes of Exposure:
The substance can be absorbed into the body
by inhalation of its vapour,
and
by ingestion.
Inhalation Risk:
A harmful contamination of the air can be reached very quickly on evaporation of this substance at 20°C.
Effects of Short-Term Exposure:
Corrosive.
The vapour
is corrosive to
the eyes,
the skin
and
the respiratory tract.
Inhalation of high concentrations of the vapour may cause lung oedema (see Notes).
The effects may be delayed.
Medical observation is indicated.
See Notes.
Effects of Long-Term or Repeated Exposure:
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Physical
Properties
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Boiling point: (40% solution) 85-100°C
Melting point: (40% solution) 16°C
Relative density (water = 1): (40% solution) 1.19
Solubility in water:
miscible
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Vapour pressure, kPa at 20°C: 13.3
Relative vapour density (air = 1): 2.7
Relative density of the vapour/air-mixture at 20°C (air = 1): 1.22
Flash point: 88°C c.c.
Octanol/water partition coefficient as log Pow: 0.37
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Environmental
Data
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This substance may be hazardous to the environment; special attention should be given to water quality.
This substance does enter the environment under normal use. Great care, however, should be given to avoid any additional release, e.g. through inappropriate disposal.
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N O T E S
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This card refers to the 40% solution.
The occupational exposure limit value should not be exceeded during any part of the working exposure.
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 is therefore essential.
Immediate administration of an appropriate inhalation therapy by a doctor or a person authorized by him/her, should be considered.
Card has been partly updated in October 2005. See sections Occupational Exposure Limits, EU classification, Emergency Response.
Transport Emergency Card: TEC (R)-61GT1-I
Card has been partially updated in August 2007: see Packaging & labelling.
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ADDITIONAL INFORMATION
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ICSC: 0706
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CHLOROACETALDEHYDE (40% SOLUTION)
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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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