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GAS SUPPLIES AND GAS DISTRIBUTION SYSTEM CARBON DIOXIDE Product name
Formula
Carbon dioxide
Hazard class
CO2
Appearance and colour
Nonflammable gas IMDG code
Colourless, odourless
2.2
Specific gravity (Air=1)
Substance Identification
1.53 (heavier than air)
UN-1013
Cylinder characteristics Colour code: Body – Grey Cylinder Outlet Nominal Size Connection Contents
(cu. Metres)
Nominal Wt. Of Gas (kg) (See note 1.)
Approx. Approx.
Dimensions Cylinder Wt.
(mm) (kg) (See note 2.) (See note 3.)
C-9
CgA320
4.95
9
203 x 560
19
C-27
CgA320
14.85
27
230 x 1210
55
Note:
1. Actual contents and weight of gas in individual cylinders will vary about the nominal contents and weight of gas indicated. 2. The length includes an allowance of 70mm for a top outlet valve. 3. The approximate cylinder weight includes cylinder and valve. The approximate weight of a full cylinder is obtained by adding the nominal weight of contained gas to this figure.
CARBON DIOXIDE
Carbon dioxide is a colourless, odourless gas, slightly heavier than air. It is non-toxic and non-combustible.
It is considered a inert gases. The terms inert mean that the gases have an extremely weak tendency to react with other compounds or elements. Carbon dioxide is present in the atmosphere at a concentration of 0.04% at sea level. It is produced by burning fossil fuels or chemical reactions. Carbon dioxide is non-toxic at low concentration but it is included among the simple asphyxiate gases. Concentrations above 5% are considered as dead threatening. Carbon dioxide is used as a protective shielding gas in MAG welding. In this process carbon dioxide serves as an active gas covering round the point of the electrode/ wire and the molten pool in order to protect the welding zone from the harmful effect of the air. It is additionally greatly used in the food and beverage industry either as a protective gas to conserve food products or carbonation of soft drinks and beers. A new application is water treatment to balance the acidity of potable water.
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