Registration Dossier
Registration Dossier
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EC number: 228-601-5 | CAS number: 6303-21-5
Auto flammability
Administrative data
Link to relevant study record(s)
Description of key information
One key study is available on phosphinic acid in aqueous solution at 60% according to standard methods. Auto flammability was determined at 190°C therefore the hazard of spontaneous ignition at ambient temperature is very low.
Key value for chemical safety assessment
- Autoflammability / Self-ignition temperature at 101 325 Pa:
- 190 °C
Additional information
One key study is available on phosphinic acid in aqueous solution at 60% according to method A15 requirements from regulation (CE) n°440/2008 and under the standard procedure DIN 51794. Auto flammability was determined at 190°C therefore the hazard of spontaneous ignition at ambient temperature is very low.
According to different relevant sources (see ESS in 4.23 Additional Physico-chemical information,/Decomposition), phosphinic acid under its solid form decompose above 130°C to phosphoric acid, phosphorous acid, hydrogen and phosphine, the latter containing sufficient diphosphine to make it spontaneously flammable. Therefore, the self-ignition temperature of the aqueous solution 60% is related to its grade.
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