General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China
Latest
GB/T 7717.9-1994
Scope
This standard specifies the precipitation titration method for determining the total cyanide content in acrylonitrile for industrial use. This standard applies to industrial acrylonitrile samples with a total cyanide content (calculated as hydrocyanic acid) greater than 0.00005% (m/m).
GB/T 7717.9-1994 history
1994GB/T 7717.9-1994 Acrylonitrile for industrial use-Determination of content of total cyanides-Titrimetric method