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Diss Factsheets

Physical & Chemical properties

Melting point / freezing point

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Reference
Endpoint:
melting point/freezing point
Type of information:
experimental study
Adequacy of study:
key study
Study period:
July 2012
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: see 'Remark'
Remarks:
Conducted in accordance with ASTM D97 – 11 Standard Test Method for Pour Point of Petroleum Products. This is a non-GLP method, and is considered to be a K2 study, on the basis that it is an accepted method and describes the physical phase or flow characteristics of oil based products accurately.
Qualifier:
according to guideline
Guideline:
other: ASTM D97 – 11 Standard Test Method for Pour Point of Petroleum Products
Deviations:
not applicable
Principles of method if other than guideline:
After preliminary heating, the sample is cooled at a specified rate and examined at intervals of 3°C for flow characteristics. The lowest temperature at which movement of the specimen is observed is recorded as the pour point.
GLP compliance:
no
Type of method:
pour point
Melting / freezing pt.:
-39 °C
Atm. press.:
101.325 kPa
Decomposition:
no
Remarks on result:
other: Pour point. Standard RTP is assumed for the test.
Conclusions:
The substance demonstrated a pour point at -39 deg C. This is in line with the appearance as a viscous liquid.
Executive summary:

The substance demonstrated a pour point at -39 deg C. This is in line with the appearance as a viscous liquid.

Description of key information

Pour point of the substance.

Key value for chemical safety assessment

Melting / freezing point at 101 325 Pa:
-39 °C

Additional information

The substance demonstrated a pour point at -39 deg C. This is in line with the appearance as a viscous liquid. This study was conducted in accordance with ASTM D97 – 11 Standard Test Method for Pour Point of Petroleum Products. This is a non-GLP method, but is considered to be a K1 study, on the basis that it is an accepted method and describes the physical phase or flow characteristics of oil based products accurately.

The Klimish rating is considered appropriate in accordance with ANNEX XI-GENERAL RULES FOR ADAPTATION OF THE STANDARD TESTING REGIME SET OUT IN ANNEXES VII TO X, Para 1.1.1 which states that:

 

1.1.1. Data on physical-chemical properties from experiments not carried out according to GLP or the test methods referred to in Article 13(3)

 

Data shall be considered to be equivalent to data generated by the corresponding test

methods referred to in Article 13(3) if the following conditions are met:

1) adequacy for the purpose of classification and labelling and/or risk assessment;

2) sufficient documentation is provided to assess the adequacy of the study; and

3) the data are valid for the endpoint being investigated and the study is performed

using an acceptable level of quality assurance.

The data presented is considered to fulfil the above, as it is conducted in accordance with recognised non-GLP methods, suitable for the determination of the endpoint specific to the product type, but a suitable qualified external laboratory services provider.