GB/T 47165-2026 Active National standards

GB/T 47165-2026 Lignins—Determination of lignin content in kraft lignin, soda lignin and hydrolysis lignin

Publish Date: 2026-02-27 Implement Date: 2026-09-01 For services related to genuine standard inquiry, procurement, translation, and other related services in China, please Contact Us

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Basic Information

Standard Code: GB/T 47165-2026

Standard Type: National standards

Standard Status: Active

is_force_gb: no

CCS Name: Paper making

ICS Name: \nPulp

Publish Date: 2026-02-27

Implement Date: 2026-09-01

Pages: 20 pages

Scope

This document describes the methods of determining the lignin content in sulfate lignin, alkali lignin, and hydrolyzed lignin using the two-step hydrolysis method and the lithium chloride/dimethyl sulfoxide ultraviolet spectrophotometry (LiCl/DMSO-UV method).
This document is suitable for determining the lignin content in lignin separated from the sulfate pulping process and the caustic soda pulping process, or lignin obtained through hydrolysis of biomass.
This document stipulates that the detection limit of the two methods is 0.05%.