GB/T 7717.15-1994
Acrylonitrile for industrial use-Determination of content of p-hydroxylanisole-Spectrophotometric method (English Version)

Standard No.

GB/T 7717.15-1994

Language

Chinese, Available in English version

Release Date

1994

Published By

General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China

Status

Be replaced 2018-10

Replace By

GB/T 7717.15-2018

Latest

GB/T 7717.15-2018

Scope

This standard specifies the spectrophotometric method for the determination of p-hydroxyanisole (MEHQ) content in acrylonitrile for industrial use. This standard applies to industrial acrylonitrile samples with p-hydroxyanisole content greater than 0.0005% (m/m). Note: All impurities that absorb at 295nm will interfere with the determination. Experience shows that impurities that absorb at this wavelength may be produced in acrylonitrile that has exceeded the storage guarantee period. Therefore, this standard is only applicable to industries whose chromaticity specifications meet the specifications. Use acrylonitrile.

GB/T 7717.15-1994 history

• 2018 GB/T 7717.15-2018 Acrylonitrile for industrial use—Part 15：Determination of concent of p-hydroxylanisole
• 1994 GB/T 7717.15-1994 Acrylonitrile for industrial use-Determination of content of p-hydroxylanisole-Spectrophotometric method

GB/T 7717.15-1994 -All Parts