ISO 5275:1979
Withdrawn
A Withdrawn Standard is one, which is removed from sale, and its unique number can no longer be used. The Standard can be withdrawn and not replaced, or it can be withdrawn and replaced by a Standard with a different number.
A Withdrawn Standard is one, which is removed from sale, and its unique number can no longer be used. The Standard can be withdrawn and not replaced, or it can be withdrawn and replaced by a Standard with a different number.
Aromatic hydrocarbons Test for presence of mercaptans (thiols) Doctor test
Hardcopy , PDF 1 User , PDF 3 Users , PDF 5 Users , PDF 9 Users
12-09-2018
French, English
01-10-1979
Specifies the detection of thioalcohols. Hydrogen sulphide can also be detected by the test. Inapplicable in the presence of only traces of peroxides. Shaking of a test portion with sodium plumbite solution (Doctor solution) and observation of the mixture. From its appearence, the presence of thioalcohols, hydrogen sulphide, peroxides or elemental sulphur can be deduced. Confirmation by the addition of sulphur, shaking and observation of the appearance of the final mixture.
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