Active standard | Published: 01/07/1976

ISO 1691:1976

Sodium and potassium silicates for industrial use — Determination of carbonates content — Gas-volumetric method
(Silicates de sodium et de potassium a usage industriel — Dosage des carbonates — Méthode gazométrique)

Available languages: English, French

Available design: electronic design (pdf), Print design

from 57.20 EUR show on eshop

Detail information

Designation: ISO 1691:1976

Publication date: 01/07/1976

Pages: 5

Country: International technical standard

Where to buy?

You can buy at www.mystandards.biz

Anotation

Description / Abstract: 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.

Popular Publishers

full catalog