Use of this information is subject to copyright laws and may require the permission of the owner of the information, as described in the ECHA Legal Notice.
EC number: 219-799-4
CAS number: 2536-05-2
Objective and Information
test covers the determination of hot and cool flame autoignition
temperatures of a liquid chemical in air at atmospheric pressure
in a uniformly heated vessel.
small, metered sample of the product to be tested is inserted
into a uniformly heated 500 ml glass flask containing air at a
predetermined temperature. The contents of the flask are
observed in a dark environment for 10 minutes following
insertion of the sample, or until autoignition occurs.
Autoignition is identified by the sudden appearance of a flame
inside the flask and by a sharp rise in the temperature of the
gas mixture. The lowest internal flask temperature at which the
hot-flame ignition occurred for a series of prescribed sample
volumes is taken to be the hot-flame autoignition (AIT) of the
chemical in air at atmospheric pressure. Ignition delay times
(ignition time lags) are measured in order to determine the
ignition delay / ignition temperature relationship. The lowest
temperature at which cool flames (CFT) are observed is also
recorded. In all instances the ignition delay times are recorded.
test is conducted in accordance with the procedure described in
EU Regulation (EC) 440/2008, Annex Part A test A.15.
autoignition temperature of 2,2'-MDI (EC Number:
219-799-4) has been determined to be 515°C.
flame autoignition temperature (AIT,C):
Including correction factor for barometric pressure (°C): 515
lag to autoignition (s): 26
Barometric pressure (kPa): 98.7
Test Item quantity (μl): 200
Relative Humidity (%): 47
cool flames were observed. Ignition produced an orange
The autoignition was observed up to 515°C following EU method A.15.
Information on Registered Substances comes from registration dossiers which have been assigned a registration number. The assignment of a registration number does however not guarantee that the information in the dossier is correct or that the dossier is compliant with Regulation (EC) No 1907/2006 (the REACH Regulation). This information has not been reviewed or verified by the Agency or any other authority. The content is subject to change without prior notice.Reproduction or further distribution of this information may be subject to copyright protection. Use of the information without obtaining the permission from the owner(s) of the respective information might violate the rights of the owner.
Welcome to the ECHA website. This site is not fully supported in Internet Explorer 7 (and earlier versions). Please upgrade your Internet Explorer to a newer version.
Do not show this message again