YB/T 4991-2022 Active Industry standards-Black metallurgy

YB/T 4991-2022 The determination of insoluble matter content in coal tar products: n-heptane

Publish Date: 2022-09-30 Implement Date: 2023-04-01 For services related to genuine standard inquiry, procurement, translation, and other related services in China, please Contact Us

Basic Information

Standard Code: YB/T 4991-2022

Standard Type: Industry standards

Standard Status: Active

is_force_gb: no

CCS Name: Coal tar processing products

ICS Name: Organic chemistry

Publish Date: 2022-09-30

Implement Date: 2023-04-01

Scope

This document specifies the reagents, instruments, test procedures, data processing, and allowable tolerances for determining the content of n-heptane insolubles in coking products. This document is applicable to the determination of the content of n-heptane insolubles in coking products such as crude oil for carbon black, coal tar, and coal pitch.

Development Information

Related Standards

GB/T 2288-1980 Replaced

GB/T 2288-1980 Method for the determination of water content of coal —Carbonization products

Publish Date: 1980-12-31

GB/T 5192-1985 abolished_transferred

GB/T 5192-1985 Technical requirements of synthetic scheelite

Publish Date: 1985-05-18

GB/T 6324.1-1986 Replaced

GB/T 6324.1-1986 Organic chemical products for industrial use—Standard test method for water miscibility

Publish Date: 1986-04-26

GB/T 6324.2-1986 Replaced

GB/T 6324.2-1986 Volatile organic liquids—Determination of dry residue after evaporation on a water bath—General method

Publish Date: 1986-04-26

GB/T 6324.4-1986 Replaced

GB/T 6324.4-1986 Determination of trace sulphur in products of organic liquid—Micro-coulometry method

Publish Date: 1986-04-26

GB/T 6324.5-1986 Replaced

GB/T 6324.5-1986 Organic chemical products for industrial use—Determination of content of carbonyl compounds present—Volumetric method

Publish Date: 1986-04-26