ČSN EN 15721 (656561)

Ethanol as a blending component for petrol - Determination of higher alcohols, methanol and other impurities - Gas chromatographic method



STANDARD published on 1.3.2014


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The information about the standard:

Designation standards: ČSN EN 15721
Classification mark: 656561
Catalog number: 94920
Publication date standards: 1.3.2014
SKU: NS-147254
The number of pages: 24
Approximate weight : 72 g (0.16 lbs)
Country: Czech technical standard
Category: Technical standards ČSN

The category - similar standards:

Liquid fuels

Annotation of standard text ČSN EN 15721 (656561):

Tato evropská norma specifikuje metodu plynové chromatografie pro stanovení obsahu vyšších alkoholů (propan-1-ol, butan-1-ol, butan-2-ol, 2-methylpropan-1-ol (isobutanol), 2-methylbutan-1-ol a 3-methylbutan-1-ol) od 0,1 % do 2,5 % (m/m), methanolu od 0,1 % do 3 % (m/m) a ostatních nečistot v rozsahu koncentrace od 0,1 % do 2 % (m/m) v ethanolu.

Metoda není použitelná pro vzorky denaturovaného ethanolu z důvodu možných interferencí.

Případný obsah vody ve vzorku se při analýze nestanoví, jelikož signál pro vodu není na chromatogramu viditelný. Je-li v nějaké specifikaci požadován údaj o obsahu alkoholu, musí být obsah vody stanoven odděleně a vzat do úvahy

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