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ISO 7781:2017

Styrene-butadiene rubber, raw — Determination of soap and organic-acid content
16. 11. 2017.

Опште информације

90.93     1. 7. 2022.

ISO

ISO/TC 45/SC 3

Međunarodni standard

83.040.10  

engleski   francuski  

Kupovina

Objavljen

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Apstrakt

ISO 7781:2017 specifies three methods for the determination of the soap and organic-acid content of raw styrene-butadiene rubber (SBR).
- Method A is the titration method using indicator reagent.
- Method B is the titration method using an automatic potentiometric titrator.
- Method C is the back titration method using an automatic potentiometric titrator.
Since the soaps and organic acids present in the rubber are not single chemical compounds, the method gives only an approximate value for the soap and organic-acid content.

Životni ciklus

PRETHODNO

POVUČEN
ISO 7781:2008

TRENUTNO

OBJAVLJEN
ISO 7781:2017
90.93 Odluka o potvrđivanju standarda
1. 7. 2022.

Nacionalna preuzimanja

SRPS ISO 7781:2019  
ISS

Stiren-butadienski kaučuk, sirovi – Određivanje sadržaja sapuna i organskih kiselina

90.93   Odluka o potvrđivanju standarda

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