Aktivní norma | Vydána: 01.09.1976

ISO 3363:1976

Fluorochlorinated hydrocarbons for industrial use — Determination of acidity — Titrimetric method
(Hydrocarbures fluorochlorés a usage industriel — Détermination de l´acidité — Méthode titrimétrique)

Dostupné jazyky: Anglicky, Francouzsky

Dostupné provedení: Elektronické PDF, Tištěné

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Podrobné informace

Označení: ISO 3363:1976

Datum vydání: 01.09.1976

Stran: 3

Země: Mezinárodní technická norma

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Anotace

Description / Abstract: 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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