Potassium dicyanoargentate

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Link to relevant study record(s)

Reference

Endpoint:

relative self-ignition temperature (solids)

Type of information:

experimental study

Adequacy of study:

key study

Study period:

8 November 2010

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:

Due to the limited availability and high cost of the test material, which may not always be manufactured on a regular basis, the test was conducted using a reduced amount of test item.

Principles of method if other than guideline:

Self heating was assessed using a modified test method based on UN test N4, which is considered to produce equally robust results as the standard method but uses less volume of test substance. Due to the limited availability and high cost of the test material, which may not always be manufactured on a regular basis, this modified method was used.

GLP compliance:

yes (incl. QA statement)

Remarks on result:

other: There were no signs of self ignition or self-heating when the test item was held at 140 °C for 24 hours.

Remarks:

There were no signs of self ignition or self-heating when the test item 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 the test item 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:

Potassium dicyanoargentate showed no signs of self ignition or self-heating when 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:

This is a GLP compliant, guideline study which is considered suitable for use as the key study for this endpoint. Self heating was assessed using a modified test method based on UN test N4, which is considered to produce equally robust results as the standard method but uses lower amount of test substance. Due to the limited availability and high cost of the test material, which may not always be manufactured on a regular basis, this modified method was used. Potassium dicyanoargentate showed no signs of self ignition or self-heating when 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

Potassium dicyanoargentate showed no signs of self ignition or self-heating when  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.

Additional information

Harlan Laboratories (2011) is a GLP compliant, guideline study which is considered suitable for use as the key study for this endpoint. Self heating was assessed using a modified test method based on UN test N4, which is considered to produce equally robust results as the standard method but uses lower amount of test substance. Due to the limited availability and high cost of the test material, which may not always be manufactured on a regular basis, this modified method was used. Potassium dicyanoargentate showed no signs of self ignition or self-heating when 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.