Registration Dossier

Diss Factsheets

Physical & Chemical properties

Auto flammability

Currently viewing:

Administrative data

Link to relevant study record(s)

Description of key information

Non autoflammable

Key value for chemical safety assessment

Additional information

The substance is produced and regularly used for many years in Europe, transported in various conditions and in various amounts. Evidence connected to the long experience in handling, use and transport of the substance confirms the non- self-ignition properties. Thus, the substance is expected to be an air-stable compound at room temperature over a prolonged period of time (days), without noticeable or undesirable reactions. Many dyes were tested and did not show low auto-ignition temperature. The substance decomposes before melting between 319 and 388 °C and is not flammable. In conclusion, a potential for spontaneous ignition is not expected: the substance can be considered as a non-pyrophoric and non-self-heating solid because it is not liable to self-heat by reaction with air and without energy supply.

In addition, the substance is soluble in water at room temperature and forms a stable solution with water. No reactions with water or emission of flammable gases have ever been noted. Furthermore, for soluble dyes a reaction with water is not a desirable property from the use point of view. Therefore, the substance is considered to be not classified as a substance that in contact with water may react generating flammable gases.

Moreover, in an experimental study conducted on a similar substance, no evidence of self-ignition was reported.

Overall, the substance can be considered as not autoflammable.