Registration Dossier
Registration Dossier
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EC number: 416-530-4 | CAS number: 178949-82-1
Auto flammability
Administrative data
Link to relevant study record(s)
- Endpoint:
- relative self-ignition temperature (solids)
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 1993-04-27 to 1993-04-28
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.16 (Relative Self-Ignition Temperature for Solids)
- Deviations:
- no
- GLP compliance:
- yes
- Key result
- Relative self-ignition temperature:
- > 400 °C
- Conclusions:
- In a GLP study conducted according to EU Method A.16, trisodium EDDS was not auto-inflammable at up to 400°C.
- Executive summary:
In a GLP study conducted according to EU Method A.16, the effect of heating trisodium EDDS in a 2 mm open-top wire-mesh cube to 400oC in a temperature-controlled oven at a rate of 0.5oC/min was examined. An exothermic reaction occured at 340oC, with the internal temperature rising to 370oC. The temperature returned to oven temperature over a period of 10 min. No further reaction occured up to 400oC at which temperature the study was terminated.
Trisodium EDDS is not auto-inflammable at up to 400oC (at normal atmospheric pressure) under the conditions of the study.
Reference
The substance showed an exothermic reaction at 340oC, the internal temperature rising to 370oC.
Description of key information
In a GLP study conducted according to EU Method A.16, trisodium EDDS was not auto-inflammable at up to 400°C
Key value for chemical safety assessment
Additional information
In a GLP study conducted according to EU Method A.16, the effect of heating trisodium EDDS in a 2 mm open-top wire-mesh cube to 400oC in a temperature-controlled oven at a rate of 0.5oC/min was examined. An exothermic reaction occured at 340oC, with the internal temperature rising to 370oC. The temperature returned to oven temperature over a period of 10 min. No further reaction occured up to 400oC at which temperature the study was terminated. Trisodium EDDS is not auto-inflammable at up to 400oC (at normal atmospheric pressure) under the conditions of the study (van Helvoirt, 1993d).
In addition, in a GLP study conducted according to EU Method A.16, EDDS acid had a relative self-ignition temperature of 217oC at normal atmospheric pressure (Gair et al. 2002). [Data on EDDS free acid is considered relevant to use for predicting the auto-flammability of trisodium EDDS, and is acceptable for using as read-across information.]
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