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ISO 684:1974

Analysis of soaps — Determination of total free alkali
1. 11. 1974.

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90.93     11. 1. 2022.

ISO

ISO/TC 91

Međunarodni standard

71.100.40  

francuski   engleski  

Kupovina

Objavljen

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Apstrakt

The soap is dissolved in an ethanolic solution, the free alkali is neutralized with a known excess of sulphuric acid solution and the excess acid is titrated with ethanolic potassium hydroxide solution. The method is not applicable if the soap cantains additives (alkali, silicates, etw.) which can be decomposed by sulphuric acid by the procedure specified. The method is also not applicable to coloured soaps if the colour interferes with the phenolphthalein end point.

Životni ciklus

TRENUTNO

OBJAVLJEN
ISO 684:1974
90.93 Odluka o potvrđivanju standarda
11. 1. 2022.

REVIDIRAN OD

NAPUŠTEN
ISO/WD 684

Nacionalna preuzimanja

SRPS ISO 684:1992  
ISS

Metode ispitivanja sapuna - Određivanje sadržaja ukupnih slobodnih alkalija (identičan sa ISO 684:1974)

90.93   Odluka o potvrđivanju standarda

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