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Physical & Chemical properties

Appearance / physical state / colour

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Reference
Endpoint:
appearance / physical state / colour
Type of information:
experimental study
Adequacy of study:
key study
Study period:
From 01 to 15 February 2006
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
test procedure in accordance with generally accepted scientific standards and described in sufficient detail
Remarks:
Acceptable, well-documented study report which meets basic scientific principles. Purity and isomers composition specified.
Qualifier:
no guideline required
Principles of method if other than guideline:
The state of the substance and its colour were determined visually.
GLP compliance:
yes (incl. QA statement)
Remarks:
UK GLP Compliance Programme (inspected on August 30, 2005 / signed on November 21, 2005)
Specific details on test material used for the study:
- Storage condition of test material: approximately 4°C in the dark under nitrogen
Physical state at 20°C and 1013 hPa:
liquid
Key result
Form:
liquid
Remarks:
sligthly viscous
Colour:
Colourless to pale yellow
Substance type:
organic
Executive summary:

The state of the substance and its colour were determined visually and olfactively at room temperature and at atmospheric pressure (20°C, 1 atm) during determination of hazardous Physico-Chemical Properties, that were performed according to OECD Guidelines studies for testing chemicals and/or Methods of Council Regulation (EC).

Test material is described as a colourless to pale yellow slightly viscous liquid.

Description of key information

The substance is described as a colourless to pale yellow, slightly viscous, liquid.

Key value for chemical safety assessment

Physical state at 20°C and 1013 hPa:
liquid

Additional information

An experimental study report, relating to other physico-chemical endpoints but including a description of the substance, was provided, and considered as fully reliable. Therefore the result is considered as key data.

The substance is borderline, but matches the definition of a liquid, with freezing point = 19°C, while CLP criteria is mp <20°C. Freezing and melting transitions may differ slightly, but as presented under IU section 4.2, seeding was used to initiate the crystallisation, so the result is expected to be the closer value to melting; the substance may also exist in subcooled state at lower temperature.

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