GB/T 46432-2025 Active National standards

GB/T 46432-2025 Photography—Processing chemicals—Specifications for 1-phenyl-3-pyrazolidinone

Publish Date: 2025-10-31 Implement Date: 2026-05-01 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 46432-2025

Standard Type: National standards

Standard Status: Active

is_force_gb: no

CCS Name: Photographic-grade chemicals

ICS Name: Photographic chemicals

Publish Date: 2025-10-31

Implement Date: 2026-05-01

Pages: 16 pages

Scope

This document specifies the purity requirements for photographic-grade 1-phenyl-3-pyrazolone (Phenidone) and describes the test methods for determining its purity.
This document is applicable to the determination of 1-phenyl-3-pyrazolone, a chemical used in photographic processing.

Development Information

Word Count: 16 Thousand words Pages: 16 pages

Referenced Standards

ISO 565 ISO 10349-1 ISO 10349-4 GB/T 20432.5-2007 Photography—Photographic-grade chemicals—Test methods—Part 5:Determination of heavy metals and iron content GB/T 20432.8-2007 Photography—Photographic-grade chemicals—Test methods—Part 8:Determination of volatile matter

Adopt standards

ISO 3299:1994

Related Standards

GB/T 12938-1991 Active

GB/T 12938-1991 Determination of thiosulphate and other related residual chemicals in processed Photographic materials—Iodine-amylose, methylene blue and silver sulphide densitometric methods

Publish Date: 1991-05-22

GB/T 20432.1-2006 Active

GB/T 20432.1-2006 Photography—Photographic-grade chemicals—Test methods—Part 1:General

Publish Date: 2006-01-23

GB/T 20432.4-2006 Active

GB/T 20432.4-2006 Photography—Photographic-grade chemicals—Test methods—Part 4:Determination of residue after ignition

Publish Date: 2006-01-23

GB/T 20433-2006 Active

GB/T 20433-2006 Photography—Processing chemicals—Specifications for ammonium thiosulfate solution

Publish Date: 2006-01-23

GB/T 20432.10-2007 Active

GB/T 20432.10-2007 Photography—Photographic-grade chemicals—Test methods—Part 10:Determination of sulfide content

Publish Date: 2007-07-26

GB/T 20432.11-2007 Active

GB/T 20432.11-2007 Photography—Photographic-grade chemicals—Test methods—Part 11:Determination of specific gravity

Publish Date: 2007-07-26