ISO 5274:1979
$11.05
Aromatic hydrocarbons — Acid-wash test
| Published By | Publication Date | Number of Pages |
| ISO | 1979-07 | 4 |
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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