44
(c) the cylinder shall not be charged with a quantity of any ga specified in the first column of the table to this regulation exceeding in weight the number of pounds of water which the cylinder is capable of holding, multiplied by the filling rats specified for each gas in the second column of such table,
Filling rati
TABLE.
Car
Ammonia, Anhydrous
Beron Trichloride
051
1.05
Butadiene
0.50
Carbon Dioxide (if the cylinder is fitted with a bursting disc
which will discharge the contents before a pressure of 2,850 pounds to the square inch is attained)
0.667
Carbon Dioxide (except as specified above)
0,60
Chlorine
1.19
Cyanogen
0.77
Cyclopropanc
103.43
Dichlorodifluoromethane (Freon 12, Arctor 6)
1,08
Dichlorotetrafluoroethane (Freon 114)
1.14
Dimethyl Ether
0.56
Dimethylamine
0.52
Ethane
0.32
Ethyl Chloride
Q.79
Ethylene
0.270
Ethylene Oxide
0.72
Hydrocyanic Acid Gas (Stabilized)
0.57
Hydrogen Chloride (Hydrochloric Acid, Anhydrous)
0.42
Hydrogen Fluoride (Hydrofluoric Acid. Anhydrous)
0.80
Hydrogen Sulphide (Sulphuretted Hydrogen)
0.63
Methyl Bromide
139
Methyl Chloride
0.38
Monochlorodifluoromethane (Freon 22, Arcton 4)
0.95
Monomethylamine
0.54
Nitrogen Tetroxide (Nitrogen Peroxide)
LED
Nitrosyl Chloride
1.04
Nitrous Oxide (if impurities present do not exceed 0.1%)
0.567
Nitrous Oxide (except as specified above)
0.625
Phosgene
1.19
Propylene
Sulphur Dioxide
Trichloromonofluoromethane (Freon II)
Trimethylamine
0.40
1.18
0.50
051
45
97. In the case of cylinders used or to be used for containing Dissolved dissolved gases—
(a) the cylinder shall be made of steel;
(b) the cylinder shall contain a homogeneous porous substance which shall fill the cylinder as completely as possible and the porosity of which shall not exceed eighty per cent;
(c) if the cylinder also contains acetone or other solvent, the
acetone or other solvent shall not-
be capable of chemical reaction with the gas in the cylinder or with the homogeneous porous substance or with the metal of the cylinder; or
(i) when the cylinder is fully charged, completely fill the porosity of the homogeneous porous substance, at any tem- perature likely to be met with in ordinary practice or use, and the cylinder shall, so far as is practicable, be stored and used in an upright position;
(d) the pressure of the gas in the cylinder shall not exceed two hundred and twenty-five pounds to the square inch at a temperature of 60° Fahrenheit:
(e) if the cylinder is capable when empty of containing one cubic foot of water or more, and has the ends secured to the body by welding only, or if the porous substance in the cylinder is used without acetone or other solvent, the cylinder shall not be charged to a pressure exceeding one hundred and fifty pounds to the square inch at a temperature of 60° Fahrenheit; () if a bona fide manufacturer's test certificate cannot be presented, a cylinder before being filled for the first time shal! be tested by a person approved for that purpose by the Authority by hydraulic pressure to a pressure of not less than seven hundred and fifty pounds per square inch at 60" Fabrenheit;
(g) the cylinder shall be submitted to careful examination at least unce in every year to ascertain whether the condition of the porous mass is satisfactory and that setting, due to handling of the cylinder, has not left a cavity at the cylinder neck: h) before being filled on each occasion the acetone or other solvent content, if any, shall be checked and any deficiency shall be made good:
the tare weight shall be prominently stamped on the outside of the cylinder;
no cylinder valve shall contain more than seventy per cent of copper in its composition:
gasps.