GB/T 3780.7-2025 Active National standards

GB/T 3780.7-2025 Carbon black—Part 7:Determination of pH value

Publish Date: 2025-08-01 Implement Date: 2026-02-01 For services related to genuine standard inquiry, procurement, translation, and other related services in China, please Contact Us

Basic Information

Standard Code: GB/T 3780.7-2025

Standard Type: National standards

Standard Status: Active

is_force_gb: no

CCS Name: Carbon black

ICS Name: Rubber synthetic ingredients

Publish Date: 2025-08-01

Implement Date: 2026-02-01

Publisher: 国家市场监督管理总局、国家标准化管理委员会

Technical Committee: 全国橡胶与橡胶制品标准化技术委员会(SAC/TC 35)

Pages: 12 pages

Scope

本文件描述了用煮沸泥浆法（A法）和超声泥浆法（B法）测定炭黑pH值的方法。
本文件适用于橡胶用炭黑、乙炔炭黑、色素炭黑及其他炭黑的测定。

Development Information

Drafting Units:

龙星化工股份有限公司、中昊黑元化工研究设计院有限公司、伊克斯达(青岛)控股有限公司、无锡双诚炭黑科技股份有限公司、曲靖众一精细化工股份有限公司、山西安仑化工有限公司

Drafting Persons:

侯贺钢、刘健、陈晓燕、汤国军、胡小丽、薛亚磊、熊锦丽、聂素青

Word Count: 14 Thousand words Pages: 12 pages

Same series standard

GB/T 3780.21-2025 Carbon black—Part 21:Determination of sieve residue—Water washing method GB/T 3780.31-2025 Carbon black—Part 31:Determination of total hydrogen content

Replace the following standards

GB/T 3780.7-2016 Carbon black—Part 7:Determination of pH value

Referenced Standards

GB 3778-1994 Carbon black for use in rubber industry GB 3778-2003 Carbon black for use in rubber products GB/T 3778-2011 Carbon black for use in rubber products GB/T 3778-2021 Carbon black for use in rubber products GB/T 3782-1993 Acetylene black—Specification limits GB/T 3782-2006 Acetylene black GB/T 3782-2016 Acetylene black 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 7044-1993 Colour black—Specification GB/T 7044-2003 Colour carbon black GB/T 7044-2013 Colour carbon black GB/T 7044-2022 Colour carbon black 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 9724-2007 Chemical reagent—General rule for the determination of pH GB/T 12804-1991 Laboratory glassware—Graduated measuring cylinders GB/T 12804-2011 Laboratory glassware—Graduated measuring cylinders

Related Standards

GB/T 11409.4-1989 Replaced

GB/T 11409.4-1989 Test method of weight loss on heating for rubber antiagers and vulcanizing accelerators

Publish Date: 1989-03-31

GB/T 11409.5-1989 Replaced

GB/T 11409.5-1989 Test method of residue on sieve for rubber antiagers and vulcanizing accelerators

Publish Date: 1989-03-31

GB/T 11409.7-1989 Replaced

GB/T 11409.7-1989 Test method of ash for rubber antiagers and vulcanizing accelerators

Publish Date: 1989-03-31

GB/T 11409.8-1989 Replaced

GB/T 11409.8-1989 Test method of viscosity for rubber antiagers and vulcanizing accelerators—Rotational viscometer method

Publish Date: 1989-03-31

GB/T 12827-1991 Replaced

GB/T 12827-1991 Standard reference acetylene black and standard practice for evaluation

Publish Date: 1991-04-23

GB/T 13021-1991 Replaced

GB/T 13021-1991 Determination for the carbon black content of polyethylene pipes and fittings by calcination and pyrolysis

Publish Date: 1991-07-03