ISO 17531:2002

Photography — Processing chemicals — Specifications for 4-(N-ethyl-N-2-methanesulfonylaminoethyl)-2-methylphenylenediamine sesquisulfate monohydrate

Publication date: Jun 20, 2002

General information

Current stage: 90.20 Effective date: Jan 15, 2026

Originator: ISO

Owner: ISO/TC 42

Type: International Standard

ICS: 37.040.30

Languages: English

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Status: Published

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Scope

This International Standard establishes criteria for the purity of photographic-grade 4-(N-ethyl-N-2-methanesulfonyl-aminoethyl)-2-methylphenylenediamine sesquisulfate monohydrate and specifies the test methods to be used to determine the purity.

Life cycle

NOW

PUBLISHED
ISO 17531:2002
90.20 Standard under periodical review
Jan 15, 2026

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