GB/T 20020-2025 Active National standards

GB/T 20020-2025 Fumed silica

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 20020-2025

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

Pages: 32 pages

Scope

This document defines the terms and definitions of fumed silica, stipulates the technical requirements of the product, describes the methods of sampling and testing, establishes the rules for sample inspection, and specifies aspects such as marking, packaging, storage, and transportation. At the same time, it provides a product classification that facilitates technical specifications.
This document is applicable to the production, testing, and acceptance of fumed silica.

Development Information

Word Count: 48 Thousand words Pages: 32 pages

Replace the following standards

GB/T 20020-2013 Fumed silica

Referenced Standards

GB/T 6003.1-1997 Test sieves of metal wire cloth GB/T 6003.1-2012 Test sieves—Technical requirements and testing—Part 1:Test sieves of metal wire cloth GB/T 6003.1-2022 Test sieves—Technical requirements and testing—Part 1:Test sieves of metal wire cloth 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 9724-2007 Chemical reagent—General rule for the determination of pH GB/T 10722-2003 Carbon black—Determination of total and external surface area by nitrogen adsorption GB/T 10722-2014 Carbon black—Determination of total and external surface area—Nitrogen adsorption test method

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