ISO 745:1976

Withdrawn

Sodium carbonate for industrial use Determination of loss of mass and of non-volatile matter at 250 degrees C

Available format(s)

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

Withdrawn date

02-25-2019

Language(s)

English, French

Published date

02-01-1976

Publisher

International Organization for Standardization

Describes a method of analysis of anhydrous sodium carbonate and sodium carbonate decahydrate. The principle of analysis consists in heating of thin layers of a test portion to constant mass at 250 C. The residue constitutes the non-volatile matter at 250 C. The loss of mass represents water in its various forms plus half the carbon dioxide content of the hydrogen carbonate present. Replaces ISO Recommendation R 745-1968.

DevelopmentNote	Also numbered as BS 6070-3(1981). (11/2003)
DocumentType	Standard
Pages	2
PublisherName	International Organization for Standardization
Status	Withdrawn

Standards	Relationship
UNE 55584:1981	Identical
NBN T 03 112 : 1979	Identical

ISO 740:1976	Sodium carbonate for industrial use — Determination of total soluble alkalinity — Titrimetric method
ISO 746:1976	Sodium carbonate for industrial use — Determination of matter insoluble in water at 50 degrees C
ISO 743:1976	Sodium carbonate for industrial use Determination of sulphate content Barium sulphate gravimetric method
BS 6070-4:1981	Methods of sampling and test for sodium carbonate for industrial use Determination of matter insoluble in water
BS 6070-1:1981	Methods of sampling and test for sodium carbonate for industrial use Determination of total soluble alkali content