This standard specifies the method for the determination of acid value and acidity of plasticizers. This standard applies to the determination of acid value and acidity of general plasticizers.
GB/T 1668-1995 history
2008GB/T 1668-2008 Plasticizers.Determination of acid value and acidity
1995GB/T 1668-1995 Plasticizers--Determination of acid value and acidity