EN 1242:2013
(Main)Adhesives - Determination of isocyanate content
Adhesives - Determination of isocyanate content
This European Standard specifies a method for the determination of the isocyanate content of adhesives, adhesive components and their basic constituents.
It is not applicable to products containing blocked isocyanate groups which can be liberated by the reagents used in this test method.
Klebstoffe - Bestimmung des Isocyanatgehaltes
Diese Europäische Norm legt ein Verfahren zur Bestimmung des Isocyanatgehaltes von Klebstoffen, Klebstoff-Komponenten und deren Grundbestandteile fest.
Dieses Verfahren ist nicht anwendbar bei Produkten, die blockierte Isocyanatgruppen enthalten, die durch die bei diesem Prüfverfahren benutzten Reagenzien freigesetzt werden können.
Adhésifs - Détermination de la teneur en isocyanate
La présente Norme européenne spécifie une méthode permettant de déterminer la teneur en isocyanate des adhésifs, des composants d’adhésifs et de leurs constituants de base.
Elle ne s’applique pas aux produits contenant des groupes d’isocyanates bloqués qui peuvent être libérés par les réactifs utilisés dans cette méthode d’essai.
Lepila - Določevanje izocianatov
Ta evropski standard določa metodo za določevanje izocianatov v lepilih, lepilnih sestavnih delih in njihovih osnovnih sestavinah. Standard se ne uporablja za izdelke, ki vsebujejo skupine blokiranih izocianatov, ki jih je mogoče sprostiti z reagenti, uporabljenimi pri tej preskusni metodi.
General Information
- Status
- Published
- Publication Date
- 05-Mar-2013
- Withdrawal Date
- 29-Sep-2013
- Technical Committee
- CEN/TC 193 - Adhesives
- Current Stage
- 9060 - Closure of 2 Year Review Enquiry - Review Enquiry
- Start Date
- 03-Jun-2024
- Completion Date
- 03-Jun-2024
Relations
- Effective Date
- 13-Mar-2013
Overview
EN 1242:2013 (CEN) - "Adhesives - Determination of isocyanate content" - specifies a standardized chemical test method for measuring the isocyanate content (-NCO) of adhesives, adhesive components and their basic constituents. The method is intended for raw materials and formulated adhesives except products containing blocked isocyanate groups that can be liberated by the test reagents. This European Standard replaces EN 1242:2005 and clarifies reagents (notably the inclusion of ethanol) and procedural requirements.
Key topics and technical requirements
- Principle: Reaction of isocyanate groups with an excess of dibutyl amine in an aprotic solvent (typically toluene) to form urethanes; unreacted amine is back-titrated with hydrochloric acid. End-point detection via bromophenol blue indicator or potentiometric titration.
- Reagents: Dibutyl amine solutions (1.0 M and 0.2 M), dry toluene (or alternative solvents when needed), acetone, methanol, ethanol, bromophenol blue indicator, HCl solutions.
- Apparatus: Class A volumetric glassware (pipettes, volumetric flasks, burettes), analytical balance (0.1 mg), microburette, potentiometric titration electrodes (optional).
- Procedure highlights:
- Sample preparation per EN ISO 15605 and EN 1067.
- Dissolve sample in toluene (add acetone if insoluble), react with measured dibutyl amine, dilute with methanol, then back-titrate.
- Run a blank and at least two determinations; report mean value.
- Calculation: % NCO calculated from titration volumes, acid molarity and test portion mass (formula and variables provided in the standard).
- Precision: Maximum allowable deviations depend on %NCO range (e.g., <10%: 10% relative deviation; 10–20%: 5%, etc.).
- Exclusions & safety: Not applicable to materials with blocked isocyanates; includes safety and environmental precaution notes.
Applications and users
- Who uses it: Adhesive manufacturers, quality control laboratories, raw material suppliers, formulators, certification bodies and R&D teams working with polyurethane or isocyanate-containing adhesive systems.
- Practical value:
- Ensures consistent product specification and batch-to-batch quality.
- Supports compliance testing for formulations where isocyanate content affects reactivity, curing and regulatory classification.
- Enables comparison of materials across suppliers using a harmonized European method.
Related standards
- EN 923 (terms and definitions for adhesives)
- EN 1067 (sample examination/preparation)
- EN ISO 385, EN ISO 648, EN ISO 1042 (laboratory glassware)
- EN ISO 15605 (sampling)
Keywords: EN 1242:2013, isocyanate content, adhesives, dibutyl amine, titration, toluene, potentiometric titration, blocked isocyanate.
Frequently Asked Questions
EN 1242:2013 is a standard published by the European Committee for Standardization (CEN). Its full title is "Adhesives - Determination of isocyanate content". This standard covers: This European Standard specifies a method for the determination of the isocyanate content of adhesives, adhesive components and their basic constituents. It is not applicable to products containing blocked isocyanate groups which can be liberated by the reagents used in this test method.
This European Standard specifies a method for the determination of the isocyanate content of adhesives, adhesive components and their basic constituents. It is not applicable to products containing blocked isocyanate groups which can be liberated by the reagents used in this test method.
EN 1242:2013 is classified under the following ICS (International Classification for Standards) categories: 83.180 - Adhesives. The ICS classification helps identify the subject area and facilitates finding related standards.
EN 1242:2013 has the following relationships with other standards: It is inter standard links to EN 1242:2005. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
You can purchase EN 1242:2013 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 CEN standards.
Standards Content (Sample)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Klebstoffe - Bestimmung des IsocyanatgehaltesAdhésifs - Détermination de la teneur en isocyanateAdhesives - Determination of isocyanate content83.180LepilaAdhesivesICS:Ta slovenski standard je istoveten z:EN 1242:2013SIST EN 1242:2013en,fr,de01-maj-2013SIST EN 1242:2013SLOVENSKI
STANDARDSIST EN 1242:20061DGRPHãþD
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 1242
March 2013 ICS 83.180 Supersedes EN 1242:2005English Version
Adhesives - Determination of isocyanate content
Adhésifs - Détermination de la teneur en isocyanate
Klebstoffe - Bestimmung des Isocyanatgehaltes This European Standard was approved by CEN on 13 January 2013.
CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management Centre has the same status as the official versions.
CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre:
Avenue Marnix 17,
B-1000 Brussels © 2013 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 1242:2013: ESIST EN 1242:2013
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The EN 1242:2013 standard presents a comprehensive methodology for determining the isocyanate content in adhesives, including adhesive components and their basic constituents. This standard is crucial as isocyanates are commonly used in the formulation of various adhesives due to their excellent bonding properties; however, they pose health hazards if not monitored accurately. One of the key strengths of EN 1242:2013 is its specificity in defining the applicability of the method, which is strictly limited to non-blocked isocyanate groups. This clear delineation ensures that users understand the scope of the test and can avoid potential pitfalls associated with testing products that contain blocked isocyanates, which could give misleading results if liberated during testing. The relevance of this standard cannot be overstated, particularly in industries where adhesives are utilized extensively, such as construction, automotive, and furniture manufacturing. Ensuring compliance with EN 1242:2013 allows manufacturers to maintain quality control over the isocyanate content in their products, thus safeguarding worker health and adhering to regulatory requirements. Moreover, the standard's methodical approach provides a reliable framework for laboratories, encouraging consistency and precision in testing outcomes. As the demand for safer and more efficient adhesives grows, the EN 1242:2013 standard becomes an essential tool for manufacturers aiming to develop products that are not only effective but also compliant with health and environmental regulations. In summary, EN 1242:2013 stands out for its thoroughness in testing isocyanate content, its focus on safety within the adhesive industry, and its essential role in fostering compliance and quality assurance among manufacturers. This standard is integral to advancing adhesive technology while prioritizing health and safety in product development.
EN 1242:2013は、接着剤及びその基本成分に含まれるアイソシアネート（isocyanate）含量の測定方法を規定しているヨーロッパ規格です。この規格は、接着剤の品質管理や安全性評価に非常に重要な役割を果たします。 この標準の主な強みは、その明確な手法にあります。アイソシアネート含量の正確な測定は、特に接着剤が使用される製品の環境安全性を確保するために不可欠です。EN 1242:2013は、検出のための信頼性の高い方法論を提供し、関連する業界の規制に準拠していることから、使用者にとって非常に価値があります。 さらに、この規格は接着剤の主要な化学成分の分析に注力しているため、接着剤の製造業者や研究機関にとっても非常に関連性が高いです。アイソシアネート含量の測定が行えることで、製品の開発や改良に貢献し、結果として製品の性能向上にも寄与します。 一方で、EN 1242:2013は、ブロックアイソシアネートグループを含む製品には適用されないため、その点を理解しておくことも重要です。この制約により、特定の製品に対する測定や評価方法の代替策を検討する必要があります。 総じて、EN 1242:2013は、アイソシアネート含量の正確な評価を通じて接着剤の安全性と品質を保証するための信頼できる基準であり、接着剤関連の業界において必須の標準と言えるでしょう。
Die Norm EN 1242:2013 befasst sich mit der Bestimmung des Isocyanatgehalts von Klebstoffen, Klebstoffkomponenten und deren Grundstoffen. Der Umfang dieser Norm ist von großer Bedeutung, da er eine klar definierte Methode zur Analyse und Quantifizierung des Isocyanatgehalts angibt, welcher für die Sicherheit und Umweltverträglichkeit von Klebstoffen entscheidend ist. Ein herausragendes Merkmal der EN 1242:2013 ist ihre Fokussierung auf die chemischen Eigenschaften der Klebstoffe, wodurch Hersteller in der Lage sind, die Qualität ihrer Produkte aufzuzeigen und die entsprechenden regulatorischen Anforderungen zu erfüllen. Zudem wird durch diese Norm eine einheitliche Grundlage geschaffen, auf die sich sowohl Hersteller als auch Tester stützen können. Die Relevanz dieser Norm erstreckt sich über verschiedene Industriezweige hinweg, da Isocyanate weit verbreitet in der Klebstoffproduktion verwendet werden. Die normative Regelung bietet nicht nur eine einfache und effektive Methode, sondern trägt auch zur Verbesserung der Produktsicherheit bei, da sie ermöglicht, ungünstige chemische Bestandteile zu identifizieren und zu quantifizieren. Es ist jedoch wichtig zu beachten, dass die EN 1242:2013 nicht auf Produkte anwendbar ist, die blockierte Isocyanatgruppen enthalten, welche durch die in diesem Prüfverfahren verwendeten Reagenzien freigesetzt werden können. Diese Einschränkung sollte von den Nutzern der Norm berücksichtigt werden, um Missverständnisse oder fehlerhafte Ergebnisse zu vermeiden. Insgesamt stellt die EN 1242:2013 einen wichtigen Standard dar, der nicht nur die Qualitätskontrolle in der Klebstoffindustrie unterstützt, sondern auch zur Sicherstellung von Umwelt- und Gesundheitsschutz beiträgt. Die Einführung dieser Norm wird von den Akteuren der Branche als wertvoll erachtet, um den Anforderungen an die Herstellung und den Einsatz von Klebstoffen gerecht zu werden.
SIST EN 1242:2013 표준은 접착제, 접착제 구성 요소 및 이들의 기본 성분 내의 아이소시아네이트 함량을 측정하는 방법을 규정하고 있습니다. 이 표준의 범위는 접착제가 포함된 다양한 산업 응용 분야에서의 품질과 안전성을 보장하는 데 크게 기여합니다. 이 표준의 강점 중 하나는 아이소시아네이트의 정밀한 함량 측정을 통해, 사용자들이 이 화학 물질의 안전성 및 환경 영향을 더 잘 이해할 수 있도록 한다는 점입니다. 또한, 이 표준은 유럽에서 통일된 기준을 제공함으로써 다양한 제조업체와 사용자 간의 신뢰를 구축하여 국제적인 경쟁력을 높이고 있습니다. EN 1242:2013 표준은 특정 화학 반응을 기반으로 하여, 테스트 방법이 명확하게 규정되어 있으므로 검사 과정에서의 일관성과 재현성을 보장합니다. 대체로, 이 표준은 아이소시아네이트가 고온 및 고압에서 어떻게 반응할 수 있는지를 이해하는 데 유용하며, 이는 접착제의 성능을 결정짓는 중요한 요소입니다. 단, 이 표준은 차단된 아이소시아네이트 그룹을 포함하는 제품에 대해서는 적용되지 않으므로, 사용자들은 이 점을 유의해야 하며 이를 따르는 제품에서의 테스트는 다른 방법론을 통해 수행되어야 합니다. 이러한 세부 사항들은 이 표준이 특정 응용 분야에 적합한 지식을 제공하고 있음을 나타냅니다. 결론적으로, SIST EN 1242:2013은 접착제 산업에서 아이소시아네이트 함량 측정의 표준화를 통해, 품질 관리 및 안전성을 효과적으로 개선하는 데 중요한 역할을 합니다. 이 표준은 전 세계적으로 해당 분야에 있는 모든 이해관계자들에게 필수적인 기준을 제공합니다.
La norme EN 1242:2013 se concentre sur la détermination du contenu en isocyanate des adhésifs, ainsi que des composants adhésifs et de leurs constituants de base. Elle est essentielle pour garantir la sécurité et la conformité des produits adhésifs utilisés dans divers secteurs industriels. L'un des points forts de cette norme est son approche méthodologique rigoureuse, offrant une technique fiable pour quantifier le contenu en isocyanates, ce qui est vital pour évaluer la toxicité et le respect des réglementations sur les produits chimiques. La norme EN 1242:2013 est particulièrement pertinente dans un contexte où la sensibilisation aux effets néfastes des isocyanates sur la santé humaine et l'environnement est en constante augmentation. Il est également important de noter que cette norme ne s'applique pas aux produits contenant des groupes isocyanates bloqués, qui peuvent être libérés par les réactifs utilisés dans la méthode d'essai. Cette précision renforce la validité des résultats obtenus et permet aux utilisateurs de s'assurer qu'ils évalueront uniquement les formulations adéquates. En résumé, la norme EN 1242:2013 est un outil indispensable pour les fabricants d'adhésifs souhaitant garantir la sécurité de leurs produits tout en respectant les normes européennes, tout en fournissant des recommandations claires sur la méthodologie d'analyse du contenu en isocyanate.
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