ISO 1388-11:1981
(Main)Ethanol for industrial use - Methods of test - Part 11: Test for detection of furfural
Ethanol for industrial use - Methods of test - Part 11: Test for detection of furfural
The principle consists in the treatment of a test portion with aniline and acetic acid, the presence of furfural leading to the formation of a characteristic red colour. - International Standards ISO 1388/1 to ISO 1377/12 cancel and replace ISO Recommendation R 1388-1970 of which they constitute a technical revision.
Éthanol à usage industriel — Méthodes d'essai — Partie 11: Essai de détection du furfural
General Information
- Status
- Published
- Publication Date
- 30-Nov-1981
- Technical Committee
- ISO/TC 47 - Chemistry
- Drafting Committee
- ISO/TC 47 - Chemistry
- Current Stage
- 9093 - International Standard confirmed
- Start Date
- 29-Nov-2023
- Completion Date
- 13-Dec-2025
Relations
- Effective Date
- 15-Apr-2008
Overview
ISO 1388-11:1981 is an international standard specifying a test method for the detection of furfural in ethanol intended for industrial use. Developed and published by the International Organization for Standardization (ISO), this method ensures reliable and consistent identification of furfural impurities in industrial ethanol. The test principle involves treating a sample with aniline and acetic acid, where the presence of furfural leads to the formation of a characteristic red color. This standard is part 11 of the ISO 1388 series, which covers various test methods for ethanol quality and composition.
This document replaces ISO Recommendation R 1388-1970 and forms a comprehensive, technical revision aimed at improving testing accuracy for industrial ethanol products.
Key Topics
- Test Principle: Chemical reaction of furfural with aniline and acetic acid producing a red coloration.
- Sample Preparation: Testing a 10 ml portion of ethanol or an agreed volume.
- Reagents Required:
- Aniline (freshly distilled before use)
- Glacial acetic acid (density approx. 1.05 g/ml)
- Apparatus: Ordinary laboratory equipment including test tubes.
- Procedure:
- Mix the ethanol test sample with aniline and acetic acid.
- Observe color change within 3 minutes.
- Result Interpretation:
- Red color formation: Indicates presence of furfural.
- No color change: Indicates absence of furfural.
- Quality Requirements: Use only reagents of recognized analytical grade for testing accuracy.
Applications
ISO 1388-11:1981 is primarily used by manufacturers, quality control laboratories, and regulatory bodies involved in the production and distribution of industrial ethanol. Its applications include:
- Quality assurance of ethanol batches by detecting furfural impurities which can affect product performance and safety.
- Regulatory compliance for ethanol quality standards.
- Industrial process monitoring in sectors utilizing ethanol such as chemical manufacturing, pharmaceuticals, and solvents production.
- Research and development related to ethanol purification and quality improvement.
The test method facilitates rapid detection, contributing to efficient quality control workflows and ensuring ethanol meets required industrial standards.
Related Standards
ISO 1388-11:1981 is part of a broader series addressing analytical methods for industrial ethanol, including:
- ISO 1388-1 – General requirements for ethanol test methods.
- ISO 1388-2 – Detection of alkalinity or acidity.
- ISO 1388-3 to ISO 1388-4 – Estimation of carbonyl compounds and aldehydes by photometric and titrimetric methods.
- ISO 1388-5 – Test for ethanol miscibility with water.
- ISO 1388-7 and ISO 1388-8 – Determination of methanol content through photometric and calorimetric methods.
- ISO 1388-9 – Determination of esters content.
- ISO 1388-10 – Estimation of hydrocarbon content by distillation.
- ISO 1388-12 – Determination of permanganate time (oxidative stability).
These standards collectively provide a comprehensive framework for assessing the chemical quality and purity of industrial ethanol, supporting consistent and safe usage in various industrial applications.
Keywords: ISO 1388-11, ethanol for industrial use, detection of furfural, ethanol quality test, industrial ethanol standards, aniline acetic acid test, furfural detection method, ISO ethanol standards, analytical chemistry ethanol, ethanol impurities test
ISO 1388-11:1981 - Ethanol for industrial use -- Methods of test
ISO 1388-11:1981 - Éthanol a usage industriel -- Méthodes d'essai
ISO 1388-11:1981 - Éthanol a usage industriel -- Méthodes d'essai
Frequently Asked Questions
ISO 1388-11:1981 is a standard published by the International Organization for Standardization (ISO). Its full title is "Ethanol for industrial use - Methods of test - Part 11: Test for detection of furfural". This standard covers: The principle consists in the treatment of a test portion with aniline and acetic acid, the presence of furfural leading to the formation of a characteristic red colour. - International Standards ISO 1388/1 to ISO 1377/12 cancel and replace ISO Recommendation R 1388-1970 of which they constitute a technical revision.
The principle consists in the treatment of a test portion with aniline and acetic acid, the presence of furfural leading to the formation of a characteristic red colour. - International Standards ISO 1388/1 to ISO 1377/12 cancel and replace ISO Recommendation R 1388-1970 of which they constitute a technical revision.
ISO 1388-11:1981 is classified under the following ICS (International Classification for Standards) categories: 71.080.60 - Alcohols. Ethers. The ICS classification helps identify the subject area and facilitates finding related standards.
ISO 1388-11:1981 has the following relationships with other standards: It is inter standard links to ISO/R 1388:1970. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
You can purchase ISO 1388-11:1981 directly from iTeh Standards. The document is available in PDF format and is delivered instantly after payment. Add the standard to your cart and complete the secure checkout process. iTeh Standards is an authorized distributor of ISO standards.
Standards Content (Sample)
International Standard
1388/l 1
INTERNATIONAL ORGANIZATION FOR STANDARDIZATlONWlE~YHAPO~HAR OPTAHM3ALU4R IlO CTAH~APTLl3ALWlM~RGANlSATlON INTERNATIONALE DE tJORMALISATION
Ethanol for industrial use - Methods of test -
Part 11 : Test for detection of furfural
Ethanol ;i usage industriel - Mthodes d ’essai - Par-tie 7 7 : Essai de dhtection du f&Ural
First edition - 1981-12-01
U DC 661.722 : 543.8 : 547.724.1 Ref. No. IS0 1388/l%1981 (E)
: industrial products, ethanols, tests, furfurals.
Descriptors
Price based on 2 pages
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Foreword
IS0 (the International Organization for Standardization) is a worldwide federation of
national standards institutes (IS0 member bodies). The work of developing Inter-
national Standards is carried out through IS0 technical committees. Every member
body interested in a subject for which a technical committee has been set up has the
right to be represented on that committee. International organizations, governmental
and non-governmental, in liaison with ISO, also take part in the work.
Draft International Standards adopted by the technical committees are circulated to
the member bodies for approval before their acceptance as International Standards by
the IS0 Council.
International Standard IS0 1388/l 1 was developed by Technical Committee
ISO/TC 47, Chemistry, and was circulated to the member bodies in February 1980.
It has been approved by the member bodies of the following countries :
Germany, F.R. Romania
Australia
South Africa, Rep. of
Austria Hungary
India Switzerland
Belgium
Thailand
Brazil Italy
Korea, Rep. of United Kingdom
Bulgaria
China Netherlands USSR
Czechoslovakia Philippines
France Poland
No member body expressed disapproval of the document.
This International Standard has also been approved by the International Union of Pure
and Applied Chemistry ( I UPAC).
International Standards IS0 1388/l to IS0 1388/12 cancel and replace IS0 Recom-
mendation R 1388-1970, of which they constitute a technical revision.
0 International Organization for Standardization, 1981
Printed in Switzerland
IS0 1388/11-1981 (E)
INTERNATIONALSTANDARD
Ethanol for industrial use - Methods of test -
Pa
...
Norme internationale
INTERNATIONAL ORGANIZATION FOR STANDARDIZATION.ME)KC1YHAPO~HAfl OPTAHH3A~MR Il0 CTAH~APTbl3ALWWWORRGANISATION INTERNATIONALE DE NORMALISATION
Éthanol à usage industriel - Méthodes d’essai -
Partie II : Essai de détection du furfural
Ethanol for industrial use - Methods of test - Part II : Test for detection of furfural
Première édition - 1981-12-01
CDU 661.722 : 543.8 : 547.724.1
Réf. no : ISO 1388/11-1981 (F)
Descripteurs : produit industriel, éthanol, essai, furfural.
Prix basé sur 2 pages
Avant-propos
L’ISO (Organisation internationale de normalisation) est une fédération mondiale
d’organismes nationaux de normalisation (comités membres de I’ISO). L’élaboration
des Normes internationales est confiée aux comités techniques de I’ISO. Chaque
comité membre intéressé par une étude a le droit de faire partie du comité technique
correspondant. Les organisations internationales, gouvernementales et non gouverne-
mentales, en liaison avec I’ISO, participent également aux travaux.
Les projets de Normes internationales adoptés par les comités techniques sont soumis
aux comités membres pour approbation, avant leur acceptation comme Normes inter-
nationales par le Conseil de I’ISO.
La Norme internationale ISO 1388/ 11 a été élaborée par le comité technique
lSO/TC 47, Chimie, et a été soumise aux comités membres en février 1980.
Les comités membres des pays suivants l’ont approuvée :
Afrique du Sud, Rép. d’ Corée, Rép. de
Roumanie
Allemagne, R. F.
France Royaume-Uni
Australie Hongrie
Suisse
Autriche Inde Tchécoslovaquie
Belgique Italie Thaïlande
Brésil Pays- Bas
URSS
Bulgarie Philippines
Chine
Pologne
Aucun comité membre ne l’a désapprouvée.
Cette Norme internationale a été également approuvée par l’Union internationale de
chimie pure et appliquée (UICPA).
Les Normes internationales ISO 1388/1 à ISO 1388/12 annulent et remplacent la
Recommandation ISO/R 1388-1970, dont elles constituent une révision technique.
Q Organisation internationale de normalisation, 1981
Imprimé en Suisse
ISO 1388/11-1981 (F)
NORME INTERNATIONALE
Éthanol à usage industriel - Méthodes d’essai -
Partie II : Essai de détection du furfural
1 Objet et domaine d’application 4 Appareillage
...
Norme internationale
INTERNATIONAL ORGANIZATION FOR STANDARDIZATION.ME)KC1YHAPO~HAfl OPTAHH3A~MR Il0 CTAH~APTbl3ALWWWORRGANISATION INTERNATIONALE DE NORMALISATION
Éthanol à usage industriel - Méthodes d’essai -
Partie II : Essai de détection du furfural
Ethanol for industrial use - Methods of test - Part II : Test for detection of furfural
Première édition - 1981-12-01
CDU 661.722 : 543.8 : 547.724.1
Réf. no : ISO 1388/11-1981 (F)
Descripteurs : produit industriel, éthanol, essai, furfural.
Prix basé sur 2 pages
Avant-propos
L’ISO (Organisation internationale de normalisation) est une fédération mondiale
d’organismes nationaux de normalisation (comités membres de I’ISO). L’élaboration
des Normes internationales est confiée aux comités techniques de I’ISO. Chaque
comité membre intéressé par une étude a le droit de faire partie du comité technique
correspondant. Les organisations internationales, gouvernementales et non gouverne-
mentales, en liaison avec I’ISO, participent également aux travaux.
Les projets de Normes internationales adoptés par les comités techniques sont soumis
aux comités membres pour approbation, avant leur acceptation comme Normes inter-
nationales par le Conseil de I’ISO.
La Norme internationale ISO 1388/ 11 a été élaborée par le comité technique
lSO/TC 47, Chimie, et a été soumise aux comités membres en février 1980.
Les comités membres des pays suivants l’ont approuvée :
Afrique du Sud, Rép. d’ Corée, Rép. de
Roumanie
Allemagne, R. F.
France Royaume-Uni
Australie Hongrie
Suisse
Autriche Inde Tchécoslovaquie
Belgique Italie Thaïlande
Brésil Pays- Bas
URSS
Bulgarie Philippines
Chine
Pologne
Aucun comité membre ne l’a désapprouvée.
Cette Norme internationale a été également approuvée par l’Union internationale de
chimie pure et appliquée (UICPA).
Les Normes internationales ISO 1388/1 à ISO 1388/12 annulent et remplacent la
Recommandation ISO/R 1388-1970, dont elles constituent une révision technique.
Q Organisation internationale de normalisation, 1981
Imprimé en Suisse
ISO 1388/11-1981 (F)
NORME INTERNATIONALE
Éthanol à usage industriel - Méthodes d’essai -
Partie II : Essai de détection du furfural
1 Objet et domaine d’application 4 Appareillage
...


















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