GB/T 30921.6-2025 Pending National standards

GB/T 30921.6-2025 Test methods of purified terephthalic acid(PTA) for industrial use—Part 6:Determination of particle size distribution

GB/T 30921.6-2025 Test methods of purified terephthalic acid(PTA) for industrial use—Part 6:Determination of particle size distribution

Publish Date: 2025-12-02 Implement Date: 2026-07-01 For services related to genuine standard inquiry, procurement, translation, and other related services in China, please Contact Us

Basic Information

Standard Code: GB/T 30921.6-2025

Standard Type: National standards

Standard Status: Pending

is_force_gb: no

CCS Name: Basic organic chemical raw materials

ICS Name: Organic acids

Publish Date: 2025-12-02

Implement Date: 2026-07-01

Publisher: 国家市场监督管理总局、国家标准化管理委员会

Technical Committee: 全国化学标准化技术委员会(SAC/TC 63)

Pages: 16 pages

Scope

本文件描述了工业用精对苯二甲酸（PTA)粒度分布测定的空气喷射筛分法、激光衍射法和动态图像法。
本文件的适用范围如下：
——空气喷射筛分法适用于粒度分布范围在10 μm～4 000 μm PTA样品的测定；
——激光衍射法适用于粒度分布范围在1 μm～2 000 μm PTA样品的测定；
——动态图像法适用于粒度分布范围在0.8 μm～5 000 μm PTA样品的测定。

Development Information

Drafting Units:

中国石化扬子石油化工有限公司、中石化(上海)石油化工研究院有限公司、中国石化仪征化纤有限责任公司、弗尔德(上海)仪器设备有限公司

Drafting Persons:

杨山、雷志文、邵强、王川、李诚炜、叶惠丽、钟选梦、俞昊、宋逵、王丽婷、顾裕丰、李顶松、杨侃

Word Count: 21 Thousand words Pages: 16 pages

Same series standard

GB/T 30921.5-2025 Test methods of purified terephthalic acid(PTA) for industrial use—Part 5:Determination of acid number

Replace the following standards

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 6682-1992 Water for analytical laboratory use—Specification and test methods GB/T 6682-2008 Water for analytical laboratory use—Specification and test methods 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 GB/T 19077-2016 Particle size analysis—Laser diffraction methods GB/T 19077-2024 Particle size analysis—Laser diffraction methods GB/T 19077.1-2003 Particle size analysis—Laser diffraction method GB/T 19077.1-2008 Particle size analysis—Laser diffraction methods—Part 1:General principles GB/T 21649.2-2017 Particle size analysis—Image analysis methods—Part 2:Dynamic image analysis methods GB/T 21649.2-2025 Particle size analysis—Image analysis methods—Part 2:Dynamic image analysis methods

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