Tetrachloorethylene
Properties
of tetrachloorethylene is described
below
PHYSICAL
STATE; APPEARANCE:
COLOURLESS LIQUID ,
WITH CHARACTERISTIC ODOUR.
PHYSICAL DANGERS:
The vapour is heavier than air.
CHEMICAL DANGERS:
On contact with hot surfaces or flames this substance decomposes
forming toxic and corrosive fumes (hydrogen chloride, phosgene,
chlorine). The substance decomposes slowly on contact with moisture
producing trichloroacetic acid and hydrochloric acid. Reacts with metals
such as aluminium, lithium, barium, beryllium.
OCCUPATIONAL EXPOSURE LIMITS:
TLV: 25 ppm; (STEL): 100 ppm; (ACGIH 1999).
OSHA PEL: TWA 100 ppm C 200 ppm 300 ppm (5-minute maximum peak in any
3-hours)
NIOSH REL: Ca Minimize workplace exposure concentrations.
NIOSH IDLH: Potential occupational carcinogen 150 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 will be reached rather slowly on
evaporation of this substance at 20°C.
EFFECTS OF SHORT-TERM EXPOSURE:
The substance irritates the eyes, the skin and the respiratory
tract. Swallowing the liquid may cause aspiration into the lungs with
the risk of chemical pneumonitis. The substance may cause effects on the
central nervous system. Exposure at high levels may result in
unconsciousness.
EFFECTS OF LONG-TERM OR REPEATED EXPOSURE:
Repeated or prolonged contact with skin may cause dermatitis. The
substance may have effects on the liver and kidneys. This substance is
probably carcinogenic to humans.
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units
For more information see website:
http://www.cdc.gov/niosh/ipcsneng/neng0076.html
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