Carbon dioxide
Properties
of carbon dioxide is described
below PHYSICAL STATE; APPEARANCE:
ODOURLESS, COLOURLESS, COMPRESSED LIQUEFIED GAS.
PHYSICAL DANGERS:
The gas is heavier than air and may accumulate in low ceiling spaces
causing deficiency of oxygen. Build up of static electricity can occur
at fast flow rates and may ignite any explosive mixtures present.
Free-flowing liquid condenses to form extremely cold dry ice.
CHEMICAL DANGERS:
The substance decomposes on heating above 2000°C producing toxic
carbon monoxide. Reacts violently with strong bases and alkali metals.
Various metal dusts such as magnesium, zirconium, titanium, aluminium,
chromium and manganese are ignitable and explosive when suspended and
heated in carbon dioxide.
OCCUPATIONAL EXPOSURE LIMITS:
TLV: 5000 ppm; 9000 mg/m3 (as
TWA); 30 000 ppm; 54 000
mg/m3 (as STEL) (ACGIH 1994-1995).
MAC: 5000 ppm; 9000 mg/m3 (1993).
OSHA PEL: TWA 5000 ppm (9000 mg/m3)
NIOSH REL: TWA 5000 ppm (9000 mg/m3) ST 30,000 ppm (54,000
mg/m3)
NIOSH IDLH: 40,000 ppm ROUTES
OF EXPOSURE:
The substance can be
absorbed into the body by inhalation.
INHALATION RISK:
On loss of containment this liquid evaporates very quickly causing
supersaturation of the air with serious risk of suffocation when in
confined areas.
EFFECTS OF SHORT-TERM EXPOSURE:
Inhalation of high concentrations of this gas may cause
hyperventilation and unconciousness. Rapid evaporation of the liquid may
cause frostbite.
EFFECTS OF LONG-TERM OR REPEATED EXPOSURE:
The substance may have effects on the metabolism.
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For more information see website:
http://www.cdc.gov/niosh/ipcsneng/neng0021.html
www.infomil.nl |
