This standard specifies the pH value determination method of industrial acrylonitrile (5% aqueous solution). This standard applies to the determination of the pH value (5% aqueous solution) of industrial acrylonitrile samples.
GB/T 7717.5-1994 history
2008GB/T 7717.5-2008 Acrylonitrile for industrial use.Part5:Determination of acidity and pH value and titration value
1994GB/T 7717.5-1994 Acrylonitrile for industrial use-Determination of pH value(5% aqueous solution)