GB/T 12702-1999
Butadiene for industrial use-Determination of tert-butyl-catechol(TBC)[4-(1,1-dimethylethyl)-1,2-benzenediol]-High performance liquid chromatographic method (English Version)

Standard No.

GB/T 12702-1999

Language

Chinese, Available in English version

Release Date

1999

Published By

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

Status

Be replaced 2009-02

Replace By

GB/T 6020-2008

Latest

GB/T 6020-2008

Scope

This standard specifies the high-efficiency liquid for determining the content of tert-butylcatechol [4-(1,1-dimethylethyl)-1,2-benzenediol or TBC] in industrial 1,3-butadiene. phase chromatography. Inhibitor TBC can also be determined by spectrophotometry (GB/T 6020), but this method cannot distinguish between active inhibitors and inactive oxidation products, but this method can directly measure the content of active TBC , suitable for butadiene samples with TBC content ranging from 0 to 250 mg/kg. Note: 1. The molten or concentrated solution of TBC has a strong irritating effect on human skin, and it is even more toxic if it is swallowed by the mouth. Care should be taken during operation. 2 The operation steps of handling butadiene should be carried out in a fume hood and away from open flames, and the operator should also take personal labor protection measures (such as wearing gloves and goggles, etc.).

GB/T 12702-1999 history

• 2008 GB/T 6020-2008 Butadiene for industrial use.Determination of tert-butyl-catechol(TBC)
• 1999 GB/T 12702-1999 Butadiene for industrial use-Determination of tert-butyl-catechol(TBC)[4-(1,1-dimethylethyl)-1,2-benzenediol]-High performance liquid chromatographic method

GB/T 12702-1999 Butadiene for industrial use-Determination of tert-butyl-catechol(TBC)[4-(1,1-dimethylethyl)-1,2-benzenediol]-High performance liquid chromatographic method was changed to GB/T 6020-2008 Butadiene for industrial use.Determination of tert-butyl-catechol(TBC).