ISO 685:1975
Withdrawn
A Withdrawn Standard is one, which is removed from sale, and its unique number can no longer be used. The Standard can be withdrawn and not replaced, or it can be withdrawn and replaced by a Standard with a different number.
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Analysis of soaps Determination of total alkali content and total fatty matter content
Hardcopy , PDF , PDF 3 Users , PDF 5 Users , PDF 9 Users
02-03-2020
English, French
01-10-1975
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The method consists in decomposition of the soap by a known volume of standard volumetric mineral acid solution, extraction and separation of the liberated fatty matter with light petroleum and determination of a total alkali content by titration of the excess of acid contained in the aqueous phase with a standard volumetric sodium hydroxide solution. After evaporation of the light petroleum from the extract, dissolution of the residue in ethanol and neutralization of the fatty acids with a standard volumetric potassium hydroxide solution. Evaporation of the ethanol and weighing of the soap formed to determine the total fatty matter content.
| DevelopmentNote |
Supersedes ISO 455 (04/2001) Also numbered as BS 1715-2.1(1989). (06/2005)
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| DocumentType |
Standard
|
| Pages |
3
|
| PublisherName |
International Organization for Standardization
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| Status |
Withdrawn
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| SupersededBy | |
| Supersedes |
| Standards | Relationship |
| BS 1715:1963 | Similar to |
| NBN T 63 107 : 1980 | Identical |
| NEN ISO 685 : 1983 | Identical |
| UNE 55907:1985 | Identical |
| BS 1715-1:1991 | Analysis of soaps General introduction, sampling, and test for presence of synthetic anionic-active surface active agents |
| ISO 684:1974 | Analysis of soaps Determination of total free alkali |
| BS 1715-1:1989 | Analysis of soaps. General introduction, sampling, and test for presence of synthetic anionic-active surface active agents |
| ISO 684:1974 | Analysis of soaps Determination of total free alkali |
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