Diphenyl sulphide

Boiling point

Link to relevant study record(s)

Reference

Endpoint:

boiling point

Type of information:

experimental study

Adequacy of study:

key study

Study period:

16/3/2016-17/3/2016

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Justification for type of information:

Experimental test result performed using standard OECD test guideline.

Qualifier:

according to guideline

Guideline:

OECD Guideline 103 (Boiling point/boiling range)

Principles of method if other than guideline:

A sample is heated gradually in a tube which is immersed in a liquid bath. The sample tube is held in close contact with a thermometer and it contains a boiling capillary which is fused about1 cm above its lower end. Upon approach of the boiling temperature bubbles emerge rapidly from the lower open end of the capillary. The boiling temperature is that temperature at which, on momentary cooling, the string of bubbles stops and liquid suddenly rises in the capillary.

GLP compliance:

no

Type of method:

method according to Siwoloboff

Specific details on test material used for the study:

Name of test material (as cited in study report): Diphenyl sulphide
Molecular formula:C12H10S
Molecular weight:186.277 g/mol
Smiles : c1(Sc2ccccc2)ccccc1
InChI : 1S/C12H10S/c1-3-7-11(8-4-1)13-12-9-5-2-6-10-12/h1-10H
Substance Type: Organic
Physical State: Liquid

Key result

Boiling pt.:

> 250 °C

Atm. press.:

978.5 hPa

Decomposition:

no

Remarks on result:

other: No other detail available

Method Details		Observations	Remarks if, any
Guideline	OECD 103
Method	Method according to Siwoloboff
Principle of Boiling point test	A sample is heated gradually in a tube which is immersed in a liquid bath. The sample tube is held in close contact with a thermometer and it contains a boiling capillary which is fused about1 cm above its lower end. Upon approach of the boiling temperature bubbles emerge rapidly from the lower open end of the capillary. The boiling temperature is that temperature at which, on momentary cooling, the string of bubbles stops and liquid suddenly rises in the capillary.
Quantity of chemical used	g/ml	1 ml
Nature of the Bath taken	·    Oil bath ·    Water bath	Oil bath
	If oil bath is used, specify ·    Liquid paraffin ·    Silicone oil	Silicone oil
Atmospheric pressure	hPa	978.5 hPa
Decomposition	Decomposition temperature (°C), if applicable ·                    Yes ·                    No	No
Mean Boiling point (°C) (RESULT)	°C	Greater than  250 °C
Boiling point range, if applicable	°C	------------

RESULT:

The mean boiling point ofDiphenyl sulphide(CAS No. 139-66-2)is greater than 250°C at 978.5hPa.

Conclusions:

The boiling point determination of Diphenyl sulphide (CAS No. 139-66-2) was done following OECD Guideline 103 and according to the method of Siwoloboff. The test was conducted in replicates and mean boiling point was determine to be greater than 250°C at 978.5hPa.

Executive summary:

The boiling point determination of Test item  Diphenyl sulphide(CAS No. 139-66-2) was done as per the test guideline OECD 103. The method followed was according to Siwoloboff. The mean boiling point was determine to be greater than 250°C at 978.5 hPa.

Description of key information

The boiling point determination of Diphenyl sulphide (CAS No. 139-66-2) was done following OECD Guideline 103 and according to the method of Siwoloboff. The test was conducted in replicates and mean boiling point was determine to be greater than 250°C at 978.5hPa.

Key value for chemical safety assessment

Boiling point at 101 325 Pa:

250 °C

Additional information

The boiling point determination of test item  Diphenyl sulphide(CAS No. 139-66-2) was done as per the test guideline OECD 103. The method followed was according to Siwoloboff. The mean boiling point was determine to be greater than 250°C at 978.5 hPa.

 

Other supporting studies from various reliable sources such as handbooks [Merck Index (2015)], authoritative database (SRC Physprop database; 2016) and from predictive model (EPI Suite; 2017) also suggests that, the boiling point of diphenyl sulphide was found to be in the range of 295 to 298.21 deg C.

 

As the data from experimental study has K1 reliability and the test was performed using OECD guideline which has the value of boiling point as 250 degC at 978.5 hPa, thus considered as key study for the purpose of chemical safety assessment.