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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: Test N.4 of the United Nations Recommendations on the Transport of Dangerous Goods, Manual of Tests and Criteria, fifth revised edition 2009
Deviations:
yes
Remarks:
Test N4 uses a large amount of test item, however the test item was only available in very limited amounts and was extremely expensive. A modified procedure was employed
GLP compliance:
yes (incl. QA statement)
Remarks on result:
no self ignition observed under the test conditions

Rhodium trihydroxide showed no signs of self-ignition or self-heating when held at 140 °C for 24 hours. Additionally, when heated from 140 to 400 °C, the sample temperature did not exceed the oven temperature by greater than 60 °C.

Conclusions:
Rhodium trihydroxide showed no signs of self-ignition or self-heating when held at 140°C for 24 hours. Additionally, when heated from 140 to 400°C, the sample temperature did not exceed the oven temperature by greater than 60°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.

Rhodium trihydroxide showed no signs of self-ignition or self-heating when held at 140°C for 24 hours. Additionally, when heated from 140 to 400°C, the sample temperature did not exceed the oven temperature by greater than 60°C.

Description of key information

Rhodium trihydroxide showed no signs of self-ignition or self-heating when held at 140°C for 24 hours. Additionally, when heated from 140 to 400°C, the sample temperature did not exceed the oven temperature by greater than 60°C.

Key value for chemical safety assessment

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.

Rhodium trihydroxide showed no signs of self-ignition or self-heating when held at 140°C for 24 hours. Additionally, when heated from 140 to 400°C, the sample temperature did not exceed the oven temperature by greater than 60°C.