Phenylacetic acid

Boiling point

Link to relevant study record(s)

Reference

Endpoint:

boiling point

Type of information:

experimental study

Adequacy of study:

key study

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Justification for type of information:

Data is from experimental study report

Qualifier:

according to guideline

Guideline:

OECD Guideline 103 (Boiling Point)

GLP compliance:

no

Type of method:

method according to Siwoloboff

Key result

Boiling pt.:

> 300 °C

Atm. press.:

968.9 hPa

Decomposition:

no

Method Details		Observations	Remarks if, any
Guideline	OECD 103		the test item does not show string of bubbles after melting, inferring b.p. to be greater than 300 °C.
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 about 1 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	2 g
Nature of the Bath taken	Oil bath Water bath	OIL
	If oil bath is used, specify Liquid paraffin Silicone oil	SILICONE
Atmospheric pressure	hPa	968.9
RESULT (°C)	°C	greater than 300

Conclusions:

The boiling point determination of test chemical was done as per the test guideline OECD 103. The method followed was according to Siwoloboff. The test chemical does not show string of bubbles after melting, inferring boiling point to be greater than 300 °C at 968.9 hPa.

Executive summary:

The boiling point determination of test chemical was done as per the test guideline OECD 103. The method followed was according to Siwoloboff. The test chemical does not show string of bubbles after melting, inferring boiling point to be greater than 300 °C at 968.9 hPa.

Description of key information

The boiling point determination of test chemical was done as per the test guideline OECD 103. The method followed was according to Siwoloboff. The test chemical does not show string of bubbles after melting, inferring boiling point to be greater than 300 °C at 968.9 hPa.

Key value for chemical safety assessment

Boiling point at 101 325 Pa:

300 °C

Additional information

The boiling point determination of test chemical was done as per the test guideline OECD 103. The method followed was according to Siwoloboff. The test chemical does not show string of bubbles after melting, inferring boiling point to be greater than 300 °C at 968.9 hPa.

Based on the data obtained from reliable handbook and authoritative database, boiling point of test chemical was observed to be 265.5°C at an atmospheric pressure of 760 mmHg.

The supporting studies show values different from the key study which could be due to the difference in the estimation conditions. However for the purpose of the chemical safety assessment, the key study values >300 °C shall be used.