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Physical & Chemical properties

Auto flammability

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Endpoint:
relative self-ignition temperature (solids)
Type of information:
read-across from supporting substance (structural analogue or surrogate)
Adequacy of study:
key study
Justification for type of information:
ANALOGUE APPROACH JUSTIFICATION
Read across from sodium cyanate was performed instead. No differences in auto ignition temperature are expected. The ions K+ and Na+ are not expected to contribute to auto ignition properties of the cyanates. The test item sodium cyanate is considered as not auto-flammable. Thus, also potassium cyanate is considered as not auto-flammable.
Reason / purpose for cross-reference:
read-across source
Key result
Remarks on result:
no self ignition observed under the test conditions
Endpoint:
relative self-ignition temperature (solids)
Type of information:
experimental study
Adequacy of study:
key study
Study period:
2008-12-19 to 2009-08-27
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 (incl. QA statement)
Key result
Remarks on result:
no self ignition observed under the test conditions

The auto-flammability behaviour was determined by placing the test item into a stainless steel cube and heating the environment (laboratory oven with automatic temperature recording) from room temperature to 400 °C. No increase in the temperature of the sample in comparison to that of the oven could be detected, also no signs of ignition could be observed. Therefore, the test item sodium cyanate is considered as not auto-flammable.

Conclusions:
The test item sodium cyanate is considered as not auto-flammable
Executive summary:

The test was performed with an analoguous material, sodium cyanate. The auto-flammability behaviour was determined by placing the test item into a stainless steel cube and heating the environment (laboratory oven with automatic temperature re-cording) from room temperature to 400 °C. No increase in the temperature of the sample in comparison to that of the oven could be detected, also no signs of ignition could be observed.The test item sodium cyanate is considered as not auto-flammable. It can be concluded that potassium cyanate is likewise not auto-flammable.

Description of key information

No study is available for potassium cyanate. Read-across from sodium cyanate was performed instead. No differences in auto ignition temperature are expected. The ions K+ and Na+ are not expected to contribute to auto ignition properties of the cyanates. The test item sodium cyanate is considered as not auto-flammable. Thus, also potassium cyanate is considered as not auto-flammable.

Key value for chemical safety assessment

Additional information

The auto-flammability behaviour was determined by placing the test item into a stainless steel cube and heating the environment (laboratory oven with automatic temperature recording) from room temperature to 400 °C. No increase in the temperature of the sample in comparison to that of the oven could be detected, also no signs of ignition could be observed. Therefore, the test item sodium cyanate is considered as not auto-flammable.