ISO 6228:1980

Chemical products for industrial use — General method for determination of traces of sulphur compounds, as sulphate, by reduction and titrimetry

Publication date: 1 nën 1980

General information

Current stage: 90.93 Effective date: 18 jan 2022

Originator: ISO

Owner: ISO/TC 47

Type: International Standard

ICS: 71.040.40

Gjuha: frëngjisht anglisht

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Statusi: Publikuar

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Scope

Describes a method based on prior conversion of the sulphur compounds in a test portion to sulphate, if required, and reduction of the sulphate ions ti hydrogen sulphide by a mixture of hydriodic and phosphinic acids in the presence of hydrochloric acid. The hydrogen sulphide is entrained in a current of nitrogen and absorbed in a solution of sodium hydroxide in aqueous acetone, followed by titration of the sulphide ions with standard volumetric mercury(II) acetate or nitrate solution in the presence of 1,5-diphenyl-3-thiocarbazone (dithiozone) as indicator.

Life cycle

NOW

PUBLISHED
ISO 6228:1980
90.93 Standard confirmed
18 jan 2022

National adoptions

SSH ISO 6228:1980

DPS

Produkte kimike të lëngshme për përdorim industrial - Metoda e përgjithshme për përcaktimin e gjurmëve të komponimeve të squfurit, si sulfat me anë të reduktimit dhe me anë të metodës titrimetrike

60.60 Standard published

DPS/KT 47 më tepër

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