China 'GB/T 30921.4-2016
' standard english version:
NATIONAL STANDARD OF THE PEOPLE'S REPUBLIC OF CHINA
GB/T 30921.4-2016
Test method of purified terephthalic acid (PTA) for industrial use—Part 4: Determination of titanium content—Diantipyrylmethane photometric method 工业用精对苯二甲酸(PTA)试验方法 第4部分:钛含量的测定 二安替吡啉甲烷分光光度法
Issued Date:2016-06-14
Implemented Date:2017-01-01
Issued by:
The Standardization Administration of the People's Republic of China