ISO 3708:1976

Phosphoric acid for industrial use (including foodstuffs) — Determination of chloride content — Potentiometric method

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.

SDO:

ISO

Language:

English

ICS Codes:

67.220.20; 71.060.30

Status:

Withdrawn

Publish date:

1976-10-31

Standard Number:

ISO 3708:1976