ISO 906:1976
Hydrochloric acid for industrial use; Determination of sulphate content; Barium sulphate gravimetric method

Standard No.

ISO 906:1976

Release Date

1976

Published By

International Organization for Standardization (ISO)

Status

Withdraw 2002-05

Latest

ISO 906:1976

Scope

The method is applicable to products having sulphate contents equal to or greater than 0, 1 % (m/m). The principle consists in precipitation of the sulphates contained in a test portion as barium sulphate in diluted hydrochloric acid medium. Separation of the precipitate obtained and ignition of the residue in an electric furnace, amintained at (800 +- 25 ) ?C, and weighing. Replaces ISO Recommendation R 906-1968.

ISO 906:1976 history

• 1976 ISO 906:1976 Hydrochloric acid for industrial use; Determination of sulphate content; Barium sulphate gravimetric method