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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.

Diss Factsheets

Physical & Chemical properties

Auto flammability

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Administrative data

Link to relevant study record(s)

Reference
Endpoint:
relative self-ignition temperature (solids)
Type of information:
experimental study
Adequacy of study:
key study
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
equivalent or similar to guideline
Guideline:
other: N4 (Modified Method) Self Heating Substances
Deviations:
yes
Remarks:
the test item was only available in very limited amounts and was extremely expensive. Therefore, in order to obtain as much information as possible on the self-heating properties of the test item a modified procedure was employed
GLP compliance:
yes (incl. QA statement)
Relative self-ignition temperature:
400 °C
Remarks on result:
other:
Remarks:
There were no signs of self-ignition or self-heating when triammonium hexachlororhodate was held at 140°C for 24 hours. However, when the test item was heated from 140 to 400°C, the sample temperature exceeded the oven temperature by greater than 60°C at an oven temperature of approximately 400 °C.

There were no signs of self-ignition or self-heating when triammonium hexachlororhodate was held at 140°C for 24 hours. However, when the test item was heated from 140 to 400°C, the sample temperature exceeded the oven temperature by greater than 60°C at an oven temperature of approximately 400 °C.

Conclusions:
There were no signs of self-ignition or self-heating when triammonium hexachlororhodate was held at 140°C for 24 hours. However, when the test item was heated from 140 to 400°C, the sample temperature exceeded the oven temperature by greater than 60°C at an oven temperature of approximately 400 °C.
Executive summary:

Walker and White (2011) is a GLP compliant study following a modified UN N4 method and is considered suitable for use as the key study for this endpoint.

There were no signs of self-ignition or self-heating when triammonium hexachlororhodate was held at 140°C for 24 hours. However, when the test item was heated from 140 to 400°C, the sample temperature exceeded the oven temperature by greater than 60°C at an oven temperature of approximately 400 °C.

Description of key information

There were no signs of self-ignition or self-heating when triammonium hexachlororhodate was held at 140°C for 24 hours. However, when the test item was heated from 140 to 400°C, the sample temperature exceeded the oven temperature by greater than 60°C at an oven temperature of approximately 400 °C.

Key value for chemical safety assessment

Autoflammability / Self-ignition temperature at 101 325 Pa:
400 °C

Additional information

Walker and White (2011) is a GLP compliant study following a modified UN N4 method and is considered suitable for use as the key study for this endpoint.

There were no signs of self-ignition or self-heating when triammonium hexachlororhodate was held at 140°C for 24 hours. However, when the test item was heated from 140 to 400°C, the sample temperature exceeded the oven temperature by greater than 60°C at an oven temperature of approximately 400 °C.