Carbon dioxideProperties 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. Click here for help with converting units For more information see website:
http://www.cdc.gov/niosh/ipcsneng/neng0021.html
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