ISO 745:1976
Withdrawn
Sodium carbonate for industrial use — Determination of loss of mass and of non-volatile matter at 250 degrees C
Hardcopy , PDF
English, French
02-01-1976
02-25-2019
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.
| Committee |
ISO/TC 47
|
| DevelopmentNote |
Also numbered as BS 6070-3(1981). (11/2003)
|
| DocumentType |
Standard
|
| Pages |
2
|
| PublisherName |
International Organization for Standardization
|
| Status |
Withdrawn
|
| Standards | Relationship |
| NBN T 03 112 : 1979 | Identical |
| UNE 55584:1981 | Not Equivalent |
| UNE 55584:1981 | 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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