Photography. Processing chemicals. Specifications for anhydrous sodium sulfite

Available format(s)

Hardcopy , PDF

Language(s)

English

Published date

25-01-2002

Publisher

British Standards Institution

Foreword
Introduction
1 Scope
2 Normative references
3 General
   3.1 Physical properties
   3.2 Hazardous properties
   3.3 Storage
4 Requirements
5 Reagents and glassware
6 Sampling
7 Test methods
   7.1 Assay
   7.2 Mass fraction of insoluble matter (as a precipitate
       of calcium, magnesium and ammonium hydroxides)
   7.3 Mass fraction of heavy metals
   7.4 Mass fraction of iron
   7.5 Alkalinity (as Na2CO3)
   7.6 Reaction to ammoniacal silver nitrate
   7.7 Mass fraction of thiosulfate (as Na2s2O3)
   7.8 Appearance of solution
Table 1 - summary of requirements

Establishes criteria for the purity of photographic grade anhydrous sodium sulfite. Coverage includes: physical properties, hazardous properties, procedure, and reagents and glassware. Also specifies the tests to be used to determine the purity.

This International Standard establishes criteria for the purity of photographic-grade anhydrous sodium sulfite and specifies the tests to be used to determine the purity.

Committee	CPW/42
DevelopmentNote	Supersedes 99/703571 DC (02/2002) Reviewed and confirmed by BSI, August 2016. (07/2016)
DocumentType	Standard
Pages	16
PublisherName	British Standards Institution
Status	Current
Supersedes	BS 3304:1978 99/703571 DC : NOV 99 BS ISO 418:1994 92/41972 DC : JUN 92

Standards	Relationship
ISO 418:2001	Identical

ISO 10349-5:1992	Photography — Photographic-grade chemicals — Test methods — Part 5: Determination of heavy metals and iron content
ISO 10349-1:2002	Photography Photographic-grade chemicals Test methods Part 1: General
ISO 10349-7:1992	Photography — Photographic-grade chemicals — Test methods — Part 7: Determination of alkalinity or acidity
ISO 10349-9:1992	Photography — Photographic-grade chemicals — Test methods — Part 9: Reaction to ammoniacal silver nitrate
ISO 10349-3:1992	Photography — Photographic-grade chemicals — Test methods — Part 3: Determination of matter insoluble in ammonium hydroxide solution

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BS ISO 418:2001

Current

Table of Contents

Abstract

Scope

General Product Information

International Equivalents

Standards Referencing This Book

Category

Subcategory

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