Methods of test for phosphoric acid (orthophosphoric acid) for industrial use Determination of fluorine content

Available format(s)

Hardcopy , PDF

Language(s)

English

Published date

30-01-1976

Publisher

British Standards Institution

Cooperating organizations
Foreword
Methods of test
1. Scope and field of application
2. References
3. Principle
4. Reagents
5. Apparatus
6. Procedure
7. Expression of results
8. Test report
Figure
1. Suitable distillation apparatus

Photometric method applicable to fluorine levels of 10 mg/kg and higher.

This Part of BS 4258 specifies an alizarin complexone and lanthanum (III) nitrate photometric method for the determination of the fluorine content of orthophosphoric acid for industrial and food uses.

The method is applicable to products whose fluorine (F) content is equal to or greater than 10 mg/kg.

Committee	CII/37
DevelopmentNote	Supersedes 74/50321 DC (08/2005) Reviewed and confirmed by BSI, December 2012. (11/2012)
DocumentType	Standard
Pages	10
PublisherName	British Standards Institution
Status	Current

Standards	Relationship
ISO 3360:1976	Similar to

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BS 4258-7:1978	Methods of test for phosphoric acid (orthophosphoric acid) for industrial use Determination of total phosphorus (V) oxide content: quinoline phosphomolybdate gravimetric method
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BS 4427-9:1975	Methods of test for sodium tripolyphosphate (pentasodium triphosphate) and sodium pyrophosphate (tetrasodium pyrophosphate) for industrial use Determination of fluorine content

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BS 4258-4:1975

Methods of test for phosphoric acid (orthophosphoric acid) for industrial use Determination of fluorine content

Table of Contents

Abstract

Scope

General Product Information

International Equivalents

Standards Referenced By This Book

Standards Referencing This Book

Category

Subcategory