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Boiling point

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Reference
Endpoint:
boiling point
Type of information:
experimental study
Adequacy of study:
key study
Study period:
Study initiation date: November 01, 2010. Study completion date: November 18, 2010
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
other: Conducted in accordance with OECD guideline and GLP standards
Qualifier:
according to
Guideline:
OECD Guideline 103 (Boiling point/boiling range)
GLP compliance:
yes (incl. certificate)
Remarks:
Date of inspection: 17 and 18 March 2008. Date of signature: 23 June 2008
Type of method:
other: The method of the capillary tube was used
Specific details on test material used for the study:
-Commercial name: Amyl Salicylate
-Chemical nature: Mixture of Pentyl 2-hydroxybenzoate and 3-Methylbutyl 2-hydroxybenzoate
-Givaudan Code No: 8810001
- Physical state: Liquid
- Analytical purity: 98.8% (sum of two isomers)
- Lot/batch No.: VE00100713
- Expiration date: September 10, 2011
Boiling pt.:
555 K
Atm. press.:
101.325 kPa
Boiling pt.:
282 °C
Atm. press.:
101.325 kPa

Accuracy checking:

The accuracy of the instrument was checked by determing the melting point of a certified sample of benzoic acid (certified melting point: 122.1°C ± 0.2°C). The results were:

First determination: 122.3°C

Second determination: 122.3°C

 

Boiling point determination:

First determination: observed boiling pint: 278.4°C

Second determination: observed boiling point: 279.5°C

 

Correction to normalized pressure:

The atmospheric pressure at the time of the experiment was 94.70 kPa (Meteo Suisse). A correction of the temperature to normalised pressure (101.325 kPa) was made. The determination of this correction factor was made using the Sidney Young equation, as recommended in OECD guideline 103.

 

Tn = T + (fT.Δp)

 

Where:

Δp = 101.325 kPa – p

p = pressure in kPa; the pressure was obtained from the Swiss meteorological service for the time of the experiment;

fT= rate of change of boiling temperature with pressure in K/kPa, here a value of 0.45K/kpa, as published in the OECD guideline 103, was used.

T = temperature in K

Tn= normal boiling point

Conclusions:
It can be concluded that the standard boiling point of Amyl Salicylate is: 555 K (282°C)
Executive summary:

The boiling point of Amyl Salicylate was measured according to OECD Guideline No. 103 (principle according to Siwoloboff). The boiling point was determined to be 555K (282°C).

Description of key information

The boiling point of Amyl Salicylate was measured according to OECD Guideline No. 103 (principle according to Siwoloboff). The boiling point was determined to be 555K (282°C).

Key value for chemical safety assessment

Boiling point at 101 325 Pa:
282 °C

Additional information

The boiling point of Amyl Salicylate was measured according to OECD Guideline No. 103 (principle according to Siwoloboff). The boiling point was determined to be 555K (282°C).