ISO 914:1977

Withdrawn

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

Available format(s)

Hardcopy , PDF , PDF 3 Users , PDF 5 Users , PDF 9 Users

Withdrawn date

02-26-2019

Language(s)

English, French

Published date

11-01-1977

Publisher

International Organization for Standardization

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.

DocumentType	Standard
Pages	4
PublisherName	International Organization for Standardization
Status	Withdrawn

Standards	Relationship
UNE 55595:1981	Identical
NBN T 03 019 : 1979	Identical

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