Reference number
ISO 3199:1975
ISO 3199:1975
© ISO 2024
International Standard
ISO 3199:1975
Sodium chlorate for industrial use — Determination of chlorate content — Dichromate titrimetric method
Edition 1
1975-02
1975-02
ISO 3199:1975
8397
Published
(Edition 1, 1975)
This publication was last reviewed and confirmed in 2019.
Therefore this version remains current.
Abstract
Not applicable to the analysis of mixtures for agricultural use such as herbicides or pesticides. Indicates the risk in handling with clorates. Dissolution of the test portion in water and reduction by a known quantity, in access, of an iron(II) salt in a sulphuric acid and orthophosphoric acid medium. Titration of the excess iron(II) salt with a standard volumetric solution of potassium dichromate in the presence of barium diphenylamine-4-sulphonate solution as indicator.