0 Items
My account
Phone: (011) 7541-421, 3409-301, 3409-335, 6547-293, 3409-310
E-mail: Standards sales: prodaja@iss.rs Education: iss-edukacija@iss.rs Information about standards: infocentar@iss.rs
Stevana Brakusa 2, 11030 Beograd
Main menu

SRPS ISO 1691:2014

Sodium and potassium silicates for industrial use — Determination of carbonates content — Gas-volumetric method

Feb 28, 2014

General information

90.93     Oct 20, 2023

90.20    Oct 15, 2028

ISS

H047

International Standard

71.060.50  

English  

Plan za 2013. godinu.

Buying

Published

Language in which you want to receive the document.

Scope

Three cases, defined by a preliminary test, are envisaged: silicates containing neither sulphides nor chlorates; silicates containing sulphides; silicates containing chlorates. The method based on boiling of an acidified test portion containing methyl orange and with a lead paper strip in the vapour. The presence of sulphides produces blackening of the paper and the presence of chlorates decolorizes the methyl orange. Volumetric*measurement of carbon dioxide evolved from silicates containing neither sulphides nor chlorates by reaction with a hydrochloric acid solution. The principle for the oxidation of sulphides and the reduction of chlorates are specified.

Life cycle

PREVIOUSLY

WITHDRAWN
SRPS H.B8.318:1977

NOW

PUBLISHED
SRPS ISO 1691:2014
90.93 Standard confirmed
Oct 20, 2023

Related project

Adopted from ISO 1691:1976