ISO 3363:1976
International Standard
Current Edition
·
Approved on
01 September 1976
Fluorochlorinated hydrocarbons for industrial use — Determination of acidity — Titrimetric method
ISO 3363:1976 Files
English
3 Pages
Current Edition
BHD
19.93
ISO 3363:1976 Scope
Applicable to products the acidity of which is between 2 mol and 200 mol of univalent acid per kg. Two procedures are given: one is applicable to liquid products (R11, R113, etc.) and the other one to gaseous (R12, R22, etc.). The principle consists in extraction of the acids by water. Titration of the acids in the aqueous phase with standard volumetric sodium hydroxide solution in the presence of bromocresol green as indicator. A figure shows an apparatus for absorption of acids for products which are gaseous at ordinary temperatures.
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