ISO 745:1976
Withdrawn
A Withdrawn Standard is one, which is removed from sale, and its unique number can no longer be used. The Standard can be withdrawn and not replaced, or it can be withdrawn and replaced by a Standard with a different number.
Sodium carbonate for industrial use Determination of loss of mass and of non-volatile matter at 250 degrees C
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25-02-2019
English, French
01-02-1976
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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)
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| DocumentType |
Standard
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| Pages |
2
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| PublisherName |
International Organization for Standardization
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| Status |
Withdrawn
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| 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 |
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