Dichloromethane
Properties
of dichloromethane is described
below
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:
On contact with hot surfaces or flames this substance decomposes
forming toxic and corrosive fumes. Reacts violently with metals such as
aluminium powder and magnesium powder, strong bases and strong oxidants
causing fire and explosion hazard. Attacks some forms of plastics,
rubber and coatings.
OCCUPATIONAL EXPOSURE LIMITS:
TLV: 50 ppm; A3 (ACGIH 1999).
OSHA PEL: 1910.1052 TWA 25 ppm ST 125 ppm
NIOSH REL: Ca
NIOSH IDLH: Potential occupational carcinogen 2300 ppm
ROUTES OF EXPOSURE:
The substance can be
absorbed into the body by inhalation 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:
The substance irritates the eyes, the skin and the respiratory
tract. Exposure could cause lowering of consciousness. Exposure could
cause formation of carboxyhaemoglobin.
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 and liver .
This substance is possibly carcinogenic to humans.
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units
For more information see website:
http://www.cdc.gov/niosh/ipcsneng/neng0058.html
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