Una prefazione
ISO (Organizzazione internazionale per la standardizzazione) è un'alleanza globale di organismi di normalizzazione nazionali (Organismi membri dell'ISO). Lo sviluppo di standard internazionali viene solitamente effettuato attraverso i comitati tecnici ISO. Ciascuna istituzione associata interessata ad un argomento sul quale è stato costituito un comitato tecnico ha il diritto di essere rappresentata nel comitato. In questo lavoro sono coinvolte anche organizzazioni internazionali governative e non governative che collaborano con le organizzazioni di standardizzazione. L'ISO lavora a stretto contatto con la Commissione Elettrotecnica Internazionale (CEI) su tutte le questioni di standardizzazione elettrica.

Le procedure utilizzate per la realizzazione del presente documento così come quelle utilizzate per la successiva manutenzione sono descritte nella Part 1 della Direttiva ISO/IEC. In particolare, should pay attention to different types of ISO file the required approval standards. Il presente documento è stato redatto in conformità alle regole redazionali della Part 2 della Direttiva ISO/IEC (vedere iso.org/directives).

ISO 3679-2022 Vernici, vernici, petrolio e prodotti affini – Determinazione dei punti di infiammabilità – Metodo di equilibrio rapido

Please note that some of the contents of this document may belong to the patent right topic. L'ISO non è responsabile dell'identificazione di alcuni o tutti questi diritti di brevetto. In the process of document development determine the detailed information of any patent rights in the introduction and/or received ISO list of any patent disclosures (vedere iso.org/patents).

Tutti i nomi commerciali utilizzati nel presente documento vengono forniti come informazione per comodità dell'utente e non costituiscono un'approvazione.

Volontario, norme correlate e valutazione della conformità relative alle specifiche ISO ed esprimono il significato della terminologia nonché degli ostacoli tecnici ISO pertinenti al commercio (TBT) aderire al principio dell’organizzazione mondiale del commercio (OMC) informazione, please refer to the iso.org/iso/foreword.html.

This document is prepared by Technical Committee ISO/TC 28, Petroleum and related products, fuels and lubricants of natural or synthetic origin, in conjunction with European Committee for Standardization (CEN) Comitato Tecnico CEN/TC 19, Gaseous and liquid fuels, Lubricants and related petroleum, synthetic and biological origin products, Prepared in accordance with the Technical Cooperation Agreement between ISO and CEN (Accordo di Vienna).

ISO 3679-2022 Vernici, vernici, petrolio e prodotti affini – Determinazione dei punti di infiammabilità – Metodo di equilibrio rapido

Fifth edition cancelled and replaced the revised technical fourth edition (ISO 3679:2015).

Le principali modifiche sono le seguenti:

– introduzione, title and scope have been revised to provide a more general description of the methodology;

– Added terms and definitions in Article 3;

– Amended the verification clause;

– Added a new program C;

– Amended the wording of article 13 and included the accuracy of Procedure C;

– The equipment description in Appendix A has been revised;

– annex B has been revised and changed to normative;

– The text has been edited and revised in accordance with ISO/IEC Directive Part 2 2021.

Any feedback or questions about this document should be sent directly to the national standards organizations of the user. A full list of these institutions can be found in iso.org/members.html.

ISO 3679-2022 Vernici, vernici, petrolio e prodotti affini – Determinazione dei punti di infiammabilità – Metodo di equilibrio rapido

introduzione
This document includes three programs (UN, B e C), covering flash flash and the determination of flash point. Quick balance program A and B flash flash point and flash point can be determined respectively. Nonequilibrium program C uses an automatic test cup temperature control for flash point determination.

ISO 1516 e ISO 1523 is a closed cup balance test method, can consider when choosing method.

The equipment specified in this document can determine similar test results using A faster procedure A or B and a smaller test section (2ml or 4ml) than those required in ISO1516 or ISO 1523. Inoltre, the equipment in this document can be easily carried so that it is suitable for field testing, as well as for regular use in the laboratory. Cooperation work shows that the results obtained by these methods is comparable. Procedure C is based on test methods IP 534 and ASTM D7236.

ISO 3679-2022 Vernici, vernici, petrolio e prodotti affini – Determinazione dei punti di infiammabilità – Metodo di equilibrio rapido

The interpretation of flash point results obtained for solvent mixtures containing halogenated hydrocarbons should be considered with caution, as these mixtures can produce anomalous results.

A limited study showed that when used with this document electric igniter, some coating may produce higher flash point.

Flash point for transportation, magazzinaggio, handling and safety laws and regulations, defined as “flammable” E “flammable materials” the classification of attributes. Each particular statute gives a precise definition of the categories.

Flash point in the relatively non-volatile or non-flammable materials of high volatile materials. Flash point testing is often used as a preliminary step for other studies of unknown material composition.

Unfavorable to may not be stable, easy to break down, or explosive materials for determination of flash point. That is to say, unless previously identified in this method the required temperature range heating contact with metal parts of the flash point of a specified number of such material will not cause decomposition, explosion or other adverse effects.

ISO 3679-2022 Vernici, vernici, petrolio e prodotti affini – Determinazione dei punti di infiammabilità – Metodo di equilibrio rapido

The flash point is not a constant physicochemical property of the material under test. It is a function of the device design, the condition of the device used, and the operating procedures performed. Perciò, flash points can only be defined according to standard test methods, and there is no guarantee of a generally valid correlation between the results obtained by different test methods or with the specified different test equipment.

ISO/TR 29662 also provides useful advice in conducting flash point tests and interpreting the results.

Warnings Use of this document may involve hazardous materials, operazioni, e attrezzature. This document is not intended to address all security concerns associated with its use. It is the responsibility of the user of this document to take appropriate measures to ensure the safety and health of personnel prior to the application of the Standard and to determine the applicability of any other restrictions for this purpose.

ISO 3679-2022 Vernici, vernici, petrolio e prodotti affini – Determinazione dei punti di infiammabilità – Metodo di equilibrio rapido

1 Scopo
This document introduces the three procedures (UN, B e C), covering flash flash and the determination of flash point.

Rapid balance procedures A and B are suitable for flash edge free and flash point testing of paints, including waterborne coatings, vernici, paints and varnishes binders, binders, solventi, prodotti petroliferi (including aviation turbines), diesel and kerosene fuels, fatty acid methyl esters and related products, in a temperature range of -30 °C to 300 °C. Quick balance procedure used to determine the product under the specified temperature will blink (flash without A flash program) or the flash point (B) of the sample. This document is also applicable to determine the flash point of fatty acid methyl ester (FAME) when used in conjunction with A flash detector (A.1.6). The effectiveness of precision is shown in Table 2.

Non-equilibrium program C is suitable for petroleum products, including aviation turbines, diesel and kerosene fuels and related petroleum products, in a temperature range of -20 °C to 300°C. The off-balance program automatically determines the flash point. Accuracy has been determined in the range of 40 °C to 135 °C.

About the norms and regulations, usually use the program A or B (Vedere 10.1.1).

ISO 3679-2022 Vernici, vernici, petrolio e prodotti affini – Determinazione dei punti di infiammabilità – Metodo di equilibrio rapido

2 referenze normative
I seguenti documenti sono referenziati nel testo in modo tale che alcuni o tutti i loro contenuti costituiscano i requisiti di questo documento. Per riferimenti datati, si applica solo la versione citata. Per riferimenti non datati, i riferimenti della nuova versione (compreso qualsiasi emendamento) si applica.

ISO Guide 35, Materiale di riferimento – Guide for characterization and assessment of homogeneity and stability

ISO 1513, Pitture e vernici – Esame e preparazione dei campioni di prova

ISO 3170, oil liquid – manual sampling

ISO 3171, Petroleum liquids — Automatic pipeline sampling

ISO 15528, Vernici, vernici e materie prime per pitture e vernici – Campionamento

ISO 17034, General requirements for the competence of reference material producers

ISO 3679-2022 Vernici, vernici, petrolio e prodotti affini – Determinazione dei punti di infiammabilità – Metodo di equilibrio rapido

3 Termini e definizioni
Ai fini del presente documento, si applicano i seguenti termini e definizioni.

ISO e IEC mantengono database terminologici per la standardizzazione ai seguenti indirizzi:

– Piattaforma di navigazione online ISO: disponibile su iso.org/obp

– Enciclopedia elettronica IEC: disponibile su electropedia.org/

3.1 Balance
A condition in a flash point test method where the test section and the steam above the test section are at the same temperature when the ignition source is applied

Nota 1: This situation cannot be fully realized in practice, as the temperature may not be uniform throughout the test section, and the test covers and blinds on the equipment can be colder or warmer.

Esempio: Procedures A and B in this document, ISO 1516 e ISO 1523.

3.2 Fatty acid methyl ester
reputation

Fuel consisting of monoalkyl esters of long-chain fatty acids derived from vegetable oil or animal fat, designated as B100 or biodiesel (100%)

Nota 1: FAME is specified in specifications such as EN 14214 and ASTM D6751.

3.3 Flash No flash
The ignition source is applied at the specified temperature of the test section, measured in the specified manner and adjusted for changes in atmospheric pressure of 101,3 kPa to determine whether the vapor of the test section is ignited and whether the flame propagates over the liquid surface under the specified test conditions

ISO 3679-2022 Vernici, vernici, petrolio e prodotti affini – Determinazione dei punti di infiammabilità – Metodo di equilibrio rapido

3.4 Flash Point
The minimum temperature of the test section, adjusted for a change in atmospheric pressure of 101,3 kPa, at which the application of an ignition source under the specified test conditions would cause the vapor of the test section to ignite and the flame to spread over the liquid surface

3.5 Non-equilibrium
A condition in a flash point test method in which the test section and the steam above the test section are not in temperature equilibrium when the ignition source is applied

Nota 1: This situation is mainly due to the fact that the test section is heated at a constant prescribed rate and the steam temperature lags behind the test section temperature.

Esempio: Program C in this document, ISO 2719 e ISO 13736.

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