ISO 3708:1976
Phosphoric acid for industrial use (including foodstuffs); Determination of chloride content; Potentiometric method

Standard No.

ISO 3708:1976

Release Date

1976

Published By

International Organization for Standardization (ISO)

Status

Withdraw 2002-05

Latest

ISO 3708:1976

Scope

Applicable to products having Cl- contents, expressed as chlorine, equal to or more than 0.001 % (m/m). The lower limit can be extended downwards by using weaker standard reference and volumetric solutions. Describes potentiometric titration of the ions with silver nitrate solution in a nitric acid-acetone-water medium using a silver measurement electrode and a calomel reference electrode.

ISO 3708:1976 history

• 1976 ISO 3708:1976 Phosphoric acid for industrial use (including foodstuffs); Determination of chloride content; Potentiometric method