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ISO 456:1973

Surface active agents — Analysis of soaps — Determination of free caustic alkali
1. 3. 1973.

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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 determination may be carried out in two different ways by the ethanol method or the barium chloride method. In the first case the soap is dissolved in neutralized ethanol, and the free caustic alkali is titrated with an ewthanol solution of hydrochloric acid. The second way includes precipitating of soap and carbonate with barium chloride and determining of the residual alkalinity of the solution, representing the alkalinity of the free potassium hydroxide.

Životni ciklus

TRENUTNO

OBJAVLJEN
ISO 456:1973
90.93 Odluka o potvrđivanju standarda
11. 1. 2022.

Nacionalna preuzimanja

SRPS ISO 456:1992  
ISS

Površinski aktivne materije - Metode ispitivanja sapuna - Određivanje sadržaja slobodnih kaustičnih alkalija (identičan sa ISO 456:1973)

90.93   Odluka o potvrđivanju standarda

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