Standard

ISO 4284:1993

Jan 1993 Withdrawn

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Abstract

The principle of the method specified is digestion of a test portion in a sealed apparatus in a mixture of hydrochloric acid, tin(II) chloride and boric acid solutions, absorption of the liberated hydrogen sulfide, entrained in a stream of oxygen-free argon or nitrogen, in zinc acetate solution and iodometric determination of the zinc sulfide formed. The method is applicable to products having a sulfide content equal to or greater than 0,001 % (m/m). It is not applicable, if presence of polysulfides is suspected.

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Standard from ISO
Published: January 21 1993
Withdrawn: March 3 2010
Period for objection until: April 22 1992
Edition: 3
Document type: IS
Pages
ISBN:

Publisher: ISO
Distributor: ISO
ICS: 73.080
International TC: ISO/TC 175

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Revises: ISO 4284:1988
Revises: ISO 4284:1978

ISO 4284:1993

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ISO 4284:1993

ISO 4284:1988

ISO 4284:1978

Abstract

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Product Relations

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Version history History (3)

ISO 4284:1993

ISO 4284:1988

ISO 4284:1978

Abstract

Products specifications

Product Relations

Product life cycle