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ISO 3199:1975

Sodium chlorate for industrial use — Determination of chlorate content — Dichromate titrimetric method

Feb 1, 1975

General information

90.93     Feb 14, 2025

ISO

ISO/TC 47

International Standard

71.060.50  

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Scope

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.

Life cycle

NOW

PUBLISHED
ISO 3199:1975
90.93 Standard confirmed
Feb 14, 2025