ISO 2272:1989
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Surface active agents Soaps Determination of low contents of free glycerol by molecular absorption spectrometry
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English, French
29-06-1989
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The determination is carried out in the following way: Decomposition of the soap by sulfuric acid and extraction of the fatty acida with light petroleum. Oxidation of the free glycerol remaining in the aqueous phase by periodic acid to formic acid and formaldehyde. On reaction with chromotropic acid, the aldehyde formed gives an absorbing compound whose absorbance is propotional to the free glycerol content. Spectrometric measurement of the absorbance at a wavelength about 571 mm.
| DocumentType |
Standard
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| Pages |
3
|
| PublisherName |
International Organization for Standardization
|
| Status |
Current
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| Supersedes |
| Standards | Relationship |
| NBN ISO 2272 : 1990 | Identical |
| NF ISO 2272 : 1989 | Identical |
| UNE 55905:1991 | Identical |
| NFT 60 311 : 1972 | Identical |
| BS 1715-2.8:1989 | Analysis of soaps. Quantitative test methods Method for determination of glycerol content |
| BIS IS/ISO 1066 : 1975 | ANALYSIS OF SOAPS - DETERMINATION OF GLYCEROL CONTENT - TITRIMETRIC METHOD |
| ISO 1066:1975 | Analysis of soaps Determination of glycerol content Titrimetric method |
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