ISO 2994:1974
Ammonium sulphate for industrial use — Determination of matter insoluble in water — Gravimetric method
Reference number
ISO 2994:1974
ISO 2994:1974
Edición 1
1974-04
1974-04
© ISO 2024
Retirada
Resumen
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.
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