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ISO 5282:1982

Aromatic hydrocarbons — Determination of sulphur content — Pitt-Ruprecht reduction and spectrophotometric method

Jan 1, 1982

General information

90.93     Mar 15, 2018

ISO

ISO/TC 47

International Standard

71.080.15  

French   English  

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Scope

Relates to products boiling below 200 °C. Directly applicable to contents of 0.1 mg/kg to 30 mg/kg. Higher contents may be determined by a suitable dilution of the sample. Alkylsulphones, arylsulphonic acids and arylsulphonates give incomplete recovery of sulphur. Reduction of the sulphur compounds to nickel sulphide with Raney nickel. Stripping of the hydrogen sulphide in hydrochloric acid medium and absorption in an alkaline zinc acetate solution. Formation of methylene blue with N,N-dimethyl-p-phenylenediamine sulphate and iron(III) ammonium sulphate. Determination of the absorbance of the blue coloured solution at a wavelength of 667 nm.

Life cycle

NOW

PUBLISHED
ISO 5282:1982
90.93 Standard confirmed
Mar 15, 2018

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