ISO 5282:1982

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

Published By	Publication Date	Number of Pages
ISO	1982-01	8

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Categories: 71.080.15 - Aromatic hydrocarbons, ISO

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Description

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.

Additional information

Published Code	ISO
Published By	International Organization for Standardization
Publication Date	1982-01
Pages Count	8
Language	France
Edition	1
File Size	430.1 KB
ICS Codes	71.080.15 - Aromatic hydrocarbons

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ISO 5282:1982

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