CARBON DIOXIDE
Prepared at the 49th JECFA (1997) , published in FNP 52 Add5 (1997) superseding specifications prepared at the 29th JECFA (1985), published
in FNP 34 (1986) and in FNP 52 (1992) An ADI 'not specified' was established at the 29th JECFA (1985)
SYNONYMS INS No. 290
DEFINITION
C.A.S. number 124-38-9
Chemical formula CO2
Formula weight 44.01
Assay Not less than 99% of CO2, by volume
DESCRIPTION Colourless, odourless gas, 1 litre of which weighs about 1.98 g at 0o and 760 mm of mercury. Under a pressure of about 59 atmospheres it may be condensed to a liquid, a portion of which forms a white solid (Dry Ice) upon rapid evaporation. Solid carbon dioxide evaporates without melting upon exposure to air. Commercial carbon dioxide is shipped and handled in pressurized cylinders or low pressure bulk liquid systems, or in solid blocks.
FUNCTIONAL USES Propellant, freezing agent, carbonating agent, preservative, extraction solvent
