ISO 3332:1975

Ammonium sulphate for industrial use — Determination of ammoniacal nitrogen content — Titrimetric method after distillation

Publication date: 1 korr 1975

95.99 Withdrawal of Standard 30 pri 2025

General information

Current stage: 95.99 Effective date: 30 pri 2025

Originator: ISO

Owner: ISO/TC 47

Type: International Standard

ICS: 71.060.50

Gjuha: frëngjisht anglisht

Buying

Statusi: Shfuqizuar

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Scope

Based on dissolution of a test sample in water, distillation of the ammonia after displacement by an alkali solution. Absorption in an excess of standard volumetric sulphuric acid solution and back-titration with standard volumetric sodium hydroxide solution in the presence of methyl red/methylene blue mixed indicator. A typical distillation apparatus is shown in a figure.

Life cycle

NOW

WITHDRAWN
ISO 3332:1975
95.99 Withdrawal of Standard
30 pri 2025

National adoptions

SSH ISO 3332:1975

DPS

Sulfat amoniumi për përdorim industrial - Përcaktimi i përmbajtjes së amoniakut të azotit - Metoda titrimetrike pas distilimit

60.60 Standard published

DPS/KT 47 më tepër