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ISO 5274:1979 PDF
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Aromatic hydrocarbons — Acid-wash test
Specifies an acid washing test. Gives some indication of the degree of refining but does not give a precise measure of the amount of unsaturated compounds present as different unsaturated compounds produce different colourations with sulphuric acid. Shaking together of equal volumes of the sample and 95 % (m/m) sulphuric acid. Comparison of the colour of the acid layer with that of standard matching solutions.
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| Edition | 1979 |
|---|---|
| Published Date | 1979 |
| Published By | International Standardization Organisation |
| Page Count | 2 |
