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ASTM...
ASTM F467M-06a(2- 018) Standard ...
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19/30367928...
19/30367928 DC:2019 BS ISO 19206-4 ....
1.1 ,This test method covers the determination of cyanogen chloride in water. Cyanogen chloride is normally present only at very low concentrations, it is a very labile and sparsely soluble gaseous compound. Water samples may contain cyanogen chloride after the chlorination of waste waters containing cyanide or thiocyanate compounds.