Disodium 2-(2,4,5,7-tetrabromo-6-oxido-3-oxoxanthen-9-yl)benzoate

Melting point / freezing point

Link to relevant study record(s)

Reference

Endpoint:

melting point/freezing point

Type of information:

experimental study

Adequacy of study:

key study

Study period:

2016-11-24 – 2016-11-24

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Justification for type of information:

Experimental result using standard methods of analysis

Qualifier:

according to guideline

Guideline:

OECD Guideline 102 (Melting point / Melting Range)

Principles of method if other than guideline:

The melting point determination of Test item was done as per the test guideline OECD 102. The method followed was according to Capillary/metal block.

GLP compliance:

no

Type of method:

capillary method

Key result

Atm. press.:

977.9 hPa

Decomposition:

yes

Decomp. temp.:

>= 255 - <= 270 °C

Sublimation:

no

Remarks on result:

other: The chemical decomposes before melting

Method Details		Observations	Remarks if, any
Guideline	OECD 102	-
Method	Capillary/metal block	-
Principle of method	The temperature at which a solid becomes a liquid at standard atmospheric pressure	-
Grinding of Test item done		Not required
Atmospheric pressure	hPa	977.9hPa
Decomposition	Decomposition temperature (°C), if applicable	YES
Sublimation	Sublimation temperature (°C), if applicable	No
Mean decomposition temperature	°C	255 °C -270°C

Conclusions:

The Mean decomposition temperature of test chemical was determine be 255 °C -270°C at 977.9hPa

Executive summary:

The melting point determination of test chemical was done following OECD Guideline 102 and according to the metal block capillary method. The test item turns black from red but does not melt.The test was conducted in replicates and Mean decomposition temperature was determined to be 255 °C -270°C at 977.9hPa.

Description of key information

The melting point determination of test chemical was done following OECD Guideline 102 and according to the metal block capillary method. The test item turns black from red but does not melt.The test was conducted in replicates and Mean decomposition temperature was determine to be 255 °C -270°C at 977.9hPa

Key value for chemical safety assessment

Melting / freezing point at 101 325 Pa:

255 °C

Additional information

The melting point determination of test chemical was done following OECD Guideline 102 and according to the metal block capillary method. The test item turns black from red but does not melt.The test was conducted in replicates and Mean decomposition temperature was determine to be 255 °C -270°C at 977.9 hPa.

Other supporting studies from reliable sources such as authoritative database and handbboks the, melting point of test chemical was determined to be in the range of 295 degree C to 296 degree C and decomposition temperature was reported to be at 300 degree C.

As the data from lab has K1 reliability and the test was performed using OECD guidelines which has the value of decomposition temperature as 255 degree C to 270 degree C thus considered as key study.