GB/T 30921.7-2016 Active National standards

GB/T 30921.7-2016 Test method of purified terephthalic acid(PTA) for industrial use—Part 7:Determination of b* value—Color difference meter

GB/T 30921.7-2016 Test method of purified terephthalic acid(PTA) for industrial use—Part 7:Determination of b* value—Color difference meter

Publish Date: 2016-06-14 Implement Date: 2017-01-01 For services related to genuine standard inquiry, procurement, translation, and other related services in China, please Contact Us

Basic Information

Standard Code: GB/T 30921.7-2016

Standard Type: National standards

Standard Status: Active

is_force_gb: no

CCS Name: Basic organic chemical raw materials

ICS Name: Organic acids

Publish Date: 2016-06-14

Implement Date: 2017-01-01

Pages: 5 pages

Scope

This part of GB/T 30921 specifies the colorimeter method for determining the b* value of industrial-grade terephthalic acid (PTA). This part is applicable to the determination of the b* value of industrial-grade terephthalic acid (PTA).

Development Information

Word Count: 8 Thousand words Pages: 5 pages

Same series standard

GB/T 30921.2-2016 Test method of purified terephthalic acid(PTA) for industrial use—Part 2:Determination of metal content GB/T 30921.3-2016 Test method of purified terephthalic acid(PTA) for industrial use—Part 3:Determination of water content GB/T 30921.4-2016 Test method of purified terephthalic acid(PTA) for industrial use—Part 4:Determination of titanium content—Diantipyrylmethane photometric method GB/T 30921.5-2016 Test method of purified terephthalic acid(PTA) for industrial use—Part 5:Determination of acid number GB/T 30921.6-2016 Test method of purified terephthalic acid(PTA) for industrial use—Part 6:Determination of particle size distribution

Referenced Standards

GB/T 3723-1999 Sampling of chemical products for industrial use—Safety in sampling GB/T 6679-2003 General rules for sampling solid chemical products GB/T 8170-1987 Rules for rounding off of numberical values GB/T 8170-2008 Rules of rounding off for numerical values & expression and judgement of limiting values

Related Standards

GB/T 1626-1988 Replaced

GB/T 1626-1988 Oxalic acid for industrial use

Publish Date: 1988-04-12

GB/T 2092-1992 Replaced

GB/T 2092-1992 Sebacic acid for industrial use

Publish Date: 1992-01-14

GB/T 2093-1993 Replaced

GB/T 2093-1993 Formic acid for industrial use

Publish Date: 1993-06-15

SH/T 1499.1-1997 Replaced

SH/T 1499.1-1997 Pure adipic acid

Publish Date: 1997-07-12

SH/T 1499.2-1997 Active

SH/T 1499.2-1997 Pure adipic acid--Determination of content--Titrimetric method

Publish Date: 1997-07-12

SH/T 1499.3-1997 Replaced

SH/T 1499.3-1997 Pure adipic acid--Measurement of ammonia solution colour(in Pt-Co scale)--Spectrophotometric method

Publish Date: 1997-07-12