Standard

ISO 10702:1993

Jun 1993 Published

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Language English

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Abstract

The principle of the method specified is dissolving a test portion in hydrochloric acid followed by oxidation with hydrogen peroxide, fuming of the acid-insoluble residue in sulfuric acid with potassium sulfate and copper(II) sulfate, distilling the solution made alkaline with sodium hydroxide, collecting ammonia in a receiver containing orthoboric acid solution, titration of the ammonium ion with amidosulfuric acid. Is applicable to nitrogen contents from 0,002 % (m/m) to 0,5 % (m/m); does not apply to samples containing silicon nitride.

Document information

Standard from ISO
Published: 24 June 1993
Edition: 1
Version: 1
Document type: IS
ISBN:

ICS 77.080.01
ISO TC ISO/TC 17/SC 1

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Referred by: NS-EN ISO 15351:2010

ISO 10702:1993

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Abstract

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Abstract

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