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ICSC 0058 - DICHLOROMETHANE
DICHLOROMETHANE
ICSC: 0058
Peer-Review Status: 08.06.2012 Validated
Methylene chloride
DCM 
CAS #: 75-09-2 RTECS #: PA8050000
UN #: 1593
EC #: 602-004-00-3
EINECS #: 200-838-9
    Formula: CH2Cl2
Molecular mass: 84.9

TYPES OF HAZARD
/ EXPOSURE
ACUTE HAZARDS / SYMPTOMS PREVENTION FIRST AID / FIRE-FIGHTING
FIRE Combustible under specific conditions. Gives off irritating or toxic fumes (or gases) in a fire.    In case of fire in the surroundings, use appropriate extinguishing media. 
EXPLOSION Heating will cause rise in pressure with risk of bursting. Risk of fire and explosion. See Chemical Dangers.  Prevent build-up of electrostatic charges (e.g., by grounding).  In case of fire: keep drums, etc., cool by spraying with water. 
 
EXPOSURE   PREVENT GENERATION OF MISTS! STRICT HYGIENE!   
Inhalation Dizziness. Drowsiness. Headache. Nausea. Weakness. Unconsciousness. Death  Use ventilation, local exhaust or breathing protection.  Fresh air, rest. Artificial respiration may be needed. Refer immediately for medical attention. 
Skin Dry skin. Redness. Burning sensation.  Protective gloves. Protective clothing.  Remove contaminated clothes. Rinse and then wash skin with water and soap. 
Eyes Pain. Redness.  Wear safety spectacles 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. Further see Inhalation.  Do not eat, drink, or smoke during work.  Rinse mouth. Do NOT induce vomiting. Refer for medical attention . 

SPILLAGE DISPOSAL
PACKAGING & LABELLING
Personal protection: self-contained breathing apparatus. Ventilation. Collect leaking and spilled liquid in sealable containers as far as possible. Absorb remaining liquid in sand or inert absorbent. Then store and dispose of according to local regulations.  Do not transport with food and feedstuffs. 
EC Classification
Symbol: Xn; R: 40; S: (2)-23-24/25-36/37 
UN Classification
UN Hazard Class: 6.1; UN Pack Group: III 
GHS Classification
Signal: Danger
Harmful if swallowed
Fatal if inhaled
Causes skin and eye irritation
Suspected of causing cancer
Causes damage to central nervous system, blood, liver, the heart and lungs
May cause drowsiness or dizziness
Causes damage to the central nervous system through prolonged or repeated exposure if inhaled
May be harmful if swallowed and enters airways 
skull;toxiccancer;health haz

EMERGENCY RESPONSE SAFE STORAGE
NFPA Code: H2; F1; R0.  Separated from strong oxidants, strong bases, metals and food and feedstuffs. See Chemical Dangers. Cool. Well closed. Ventilation along the floor. 

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

Physical dangers
The vapour is heavier than air. As a result of flow, agitation, etc., electrostatic charges can be generated. 

Chemical dangers
Decomposes on heating or on burning and on contact with hot surfaces. This produces toxic and corrosive fumes including hydrogen chloride (see ICSC 0163), phosgene (see ICSC 0007) and carbon monoxide (see ICSC 0023). Reacts violently with strong oxidants, strong bases and metals such as aluminium powder and magnesium powder. This generates fire and explosion hazard. Attacks some forms of plastic, rubber and coatings. 

Occupational exposure limits
TLV: 50ppm as TWA; A3 (confirmed animal carcinogen with unknown relevance to humans); BEI issued; (ACGIH 2011).
MAK: Carcinogen category: 3A; (DFG 2011). 

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

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
The substance is irritating to the eyes, skin and respiratory tract. The substance may cause effects on the central nervous system, blood, liver, heart and lungs. Exposure could cause carbon monoxide poisoning. This may result in impaired functions. Exposure at high concentrations could cause lowering of consciousness and death. The effects may be delayed. If swallowed the substance may cause vomiting and could result in aspiration pneumonitis. 

Effects of long-term or repeated exposure
Repeated or prolonged contact with skin may cause dermatitis. The substance may have effects on the central nervous system. This substance is possibly carcinogenic to humans. 


PHYSICAL PROPERTIES ENVIRONMENTAL DATA
Boiling point: 40°C
Melting point: -95.1°C
Relative density (water = 1): 1.3
Solubility in water, g/100ml at 20°C: 1.3 (moderate)
Vapour pressure, kPa at 20°C: 47.4
Relative vapour density (air = 1): 2.9
Relative density of the vapour/air-mixture at 20°C (air = 1): 1.9
Auto-ignition temperature: 605°C
Explosive limits, vol% in air: 12-25
Octanol/water partition coefficient as log Pow: 1.25
Viscosity: 0.15 mm²/s at 20°C 
 

NOTES
Addition of small amounts of a flammable substance or an increase in the oxygen content of the air strongly enhances combustibility.
Depending on the degree of exposure, periodic medical examination is suggested.
The odour warning when the exposure limit value is exceeded is insufficient.
Do NOT use in the vicinity of a fire or a hot surface, or during welding. 

ADDITIONAL INFORMATION
 

IPCS
International
Programme on
Chemical Safety
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