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SRPS H.B8.013:1981

Sulphuric acid and oleum for industrial use — Determination of total nitrogen content — Titrimetric method after distillation

Oct 28, 1981
Oct 28, 1981
95.99   Withdrawal of Standard   Jan 28, 2013

General information

95.99     Jan 28, 2013

ISS

H047

International Standard

71.060.30  

Serbian  

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Scope

The method is applicable to products having a total nitrogen content equal to or greater than 0.05 % (m/m). The principle consists in the conversion of the nitrogen present in a test portion to ammonia by means of nascent hydrogen. Distillation and absorption of the ammonia in an excess of standard volumetric sulphuric acid solution, and back-titration with a standard volumetric sodium hydroxide solution in the presence of an indicator. - Replaces ISO Recommendation R 914-1968.

Life cycle

NOW

WITHDRAWN
SRPS H.B8.013:1981
95.99 Withdrawal of Standard
Jan 28, 2013

Related project

Adopted from ISO 914:1977