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ISO 10702:1993

Steel and iron — Determination of nitrogen content — Titrimetric method after distillation
24. 6. 1993.

Опште информације

90.93     25. 8. 2023.

ISO

ISO/TC 17/SC 1

Međunarodni standard

77.080.01  

francuski   engleski  

Kupovina

Objavljen

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Apstrakt

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.

Životni ciklus

TRENUTNO

OBJAVLJEN
ISO 10702:1993
90.93 Odluka o potvrđivanju standarda
25. 8. 2023.

REVIDIRAN OD

NAPUŠTEN
ISO/WD 10702