BS EN 15721:2013
Current
The latest, up-to-date edition.
Ethanol as a blending component for petrol. Determination of higher alcohols, methanol and other impurities. Gas chromatographic method
Hardcopy , PDF
English
30-09-2013
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Foreword
Introduction
1 Scope
2 Normative references
3 Principle
4 Reagents and materials
5 Apparatus
6 Sampling
7 Procedure
8 Calculation
9 Precision
10 Test report
Annex A (informative) - Examples of chromatograms
Bibliography
Describes a gas chromatographic method for ethanol, in which higher alcohols (propan-1-ol, butan-1-ol, butan-2-ol, 2-methylpropan-1-ol (isobutanol), 2-methylbutan-1-ol, and 3-methylbutan-1-ol) from 0,1% up to 2,5% (m/m), methanol from 0,1% up to 3% (m/m) and other impurities, in the range from 0,1% up to 2% (m/m) are determined.
| Committee |
PTI/13
|
| DevelopmentNote |
Supersedes 07/30169525 DC. (06/2009) Also numbered as BS 2000-571(2013). (09/2013)
|
| DocumentType |
Standard
|
| Pages |
26
|
| PublisherName |
British Standards Institution
|
| Status |
Current
|
| Supersedes |
This European Standard specifies a gas chromatographic method for ethanol, in which higher alcohols (propan-1-ol, butan-1-ol, butan-2-ol, 2-methylpropan-1-ol (isobutanol), 2-methylbutan-1-ol, and 3-methylbutan-1-ol) from 0,1 % up to 2,5 % (m/m), methanol from 0,1 % up to 3 % (m/m) and other impurities, in the range from 0,1 % up to 2 % (m/m) are determined.
Impurities are all the compounds not attributed to the groups of higher alcohols or methanol.
NOTE 1 The European ethanol blending component specification[1] sets a limit for the combined result of ethanol + higher alcohols, not the ethanol content itself.
Due to possible interferences, the method is not applicable to denatured ethanol samples.
Water, if present in the sample, is not included in this analysis, because a signal for water is not visible in the chromatogram. Therefore, if \'alcohol content\' is called up in a specification, water needs to be considered separately in the calculations.
NOTE 2 For the purposes of this European Standard, the term “% (m/m)” is used to represent the mass fraction (ω).
| Standards | Relationship |
| EN 15721:2013 | Identical |
| ISO 3170:2004 | Petroleum liquids — Manual sampling |
| EN 15376:2014 | Automotive fuels - Ethanol as a blending component for petrol - Requirements and test methods |
| ISO 4259:2006 | Petroleum products Determination and application of precision data in relation to methods of test |
| ISO 3696:1987 | Water for analytical laboratory use — Specification and test methods |
| EN ISO 3696:1995 | Water for analytical laboratory use - Specification and test methods (ISO 3696:1987) |
| EN ISO 3170:2004 | Petroleum liquids - Manual sampling (ISO 3170:2004) |
| EN ISO 4259:2006 | Petroleum products - Determination and application of precision data in relation to methods of test (ISO 4259:2006) |
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