ISO 2994:1974
Ammonium sulphate for industrial use; Determination of matter insoluble in water; Gravimetric method

Standard No.

ISO 2994:1974

Release Date

1974

Published By

International Organization for Standardization (ISO)

Status

Withdraw 2002-05

Latest

ISO 2994:1974

Scope

Specifies the dissolution of a test portion in water; filtration under vacuum on the filter crucible, thorough washing of the filter crucible and detection of the absence of sulphates in the wash water by a barium chloride test, drying and weighing of the insoluble residue. Has also been approved by the IUPAC.

ISO 2994:1974 history

• 1974 ISO 2994:1974 Ammonium sulphate for industrial use; Determination of matter insoluble in water; Gravimetric method