1957 Edition, December 31, 1957
Includes all amendments and changes through Amendment 1, December 31, 1957
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Description / Abstract:
Specifies two grades of material, grade A being substantially free from other isomers and grade B normally containing appreciable proportions of p-dichlorobenzene. Requirements are given in respect of specific gravity and distillation range, crystallizing point, ash, acidity and free chlorine. Test methods are described.