IPCS INCHEM Home
CHLOROACETALDEHYDE (40% SOLUTION)
ICSC: 0706
Peer-Review Status: 10.09.1997 Validated
2-Chloroacetaldehyde
2-Chloro-1-ethanal
Monochloroacetaldehyde 
CAS #: 107-20-0 RTECS #: AB2450000
UN #: 2232
EC #: 605-025-00-6
EINECS #: 203-472-8
    Formula: C2H3ClO / ClCH2CHO
Molecular mass: 78.5

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. NO contact with oxidizing agents or acids.  Use water spray, powder, alcohol-resistant foam, carbon dioxide. 
EXPLOSION Above 88°C explosive vapour/air mixtures may be formed.  Above 88°C use a closed system, ventilation and explosion-proof electrical equipment.  In case of fire: keep drums, etc., cool by spraying with water. 
 
EXPOSURE   AVOID ALL CONTACT!   
Inhalation Burning sensation. Cough. Laboured breathing. Sore throat. 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 Redness. Serious skin burns. Pain. Blisters.  Protective gloves. Protective clothing.  Remove contaminated clothes. Rinse and then wash skin with water and soap. Refer for medical attention . 
Eyes Redness. Pain. Loss of vision. Severe deep burns.  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 Abdominal pain. Burning sensation.  Do not eat, drink, or smoke during work. Wash hands before eating.  Rinse mouth. Do NOT induce vomiting. Refer for medical attention . 

SPILLAGE DISPOSAL
PACKAGING & LABELLING
Evacuate danger area! Consult an expert! Personal protection: complete protective clothing including self-contained breathing apparatus. Ventilation. Collect leaking liquid in sealable containers. Wash away remainder with plenty of water.  Unbreakable packaging.
Put breakable packaging into closed unbreakable container.
Do not transport with food and feedstuffs. 
EC Classification
Symbol: T+, N; R: 24/25-26-34-40-50; S: (1/2)-26-28-36/37/39-45-61 
UN Classification
UN Hazard Class: 6.1; UN Pack Group: I; UN Pack Group: II 
GHS Classification
 

EMERGENCY RESPONSE SAFE STORAGE
Transport Emergency Card: TEC (R)-61GT1-I.  Separated from strong oxidants, acids, metals and food and feedstuffs. 

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

Physical dangers
The vapour is heavier than air. 

Chemical dangers
Decomposes on heating. This produces toxic fumes of chlorine. Reacts with oxidants and acids. This generates explosion hazard. 

Occupational exposure limits
TLV: 1ppm (ceiling value); (ACGIH 2005).
MAK: Carcinogen category: 3B; Skin absorption (H); (DFG 2005). 

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, skin and respiratory tract. Inhalation of high concentrations of the vapour may cause lung oedema. The effects may be delayed. Medical observation is indicated. See Notes. 

Effects of long-term or repeated exposure
 


PHYSICAL PROPERTIES ENVIRONMENTAL DATA
Boiling point: 85-100°C (40% solution)
Melting point: 16°C (40% solution)
Relative density (water = 1): 1.19 (40% solution)
Solubility in water: miscible
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  
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 taken to avoid any additional release, for example through inappropriate disposal. 

NOTES
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.
Card has been partially updated in August 2007: see Packaging & labelling. 

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