This standard specifies the spectrophotometric method for the determination of iron content in acrylonitrile for industrial use. This standard applies to industrial acrylonitrile samples with an iron content greater than 0.000005% (m/m).
GB/T 7717.11-1994 history
2008GB/T 7717.11-2008 Acrylonitrile for industrial use.Part11:Determination of content of iron and copper.Spectrophotometric method
1994GB/T 7717.11-1994 Acrylonitrile for industrial use-Determination of content of iron-Spectrophotometric method