butanedioic acid, 2-octenyl

Melting point / freezing point

Link to relevant study record(s)

Reference

Endpoint:

melting point/freezing point

Remarks:

EC Method A.1, OECD Method 102

Type of information:

experimental study

Adequacy of study:

key study

Study period:

2017

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Justification for type of information:

not applicable

Qualifier:

according to guideline

Guideline:

OECD Guideline 102 (Melting point / Melting Range)

Deviations:

no

Qualifier:

according to guideline

Guideline:

EU Method A.1 (Melting / Freezing Temperature)

Deviations:

no

Principles of method if other than guideline:

not applicable

GLP compliance:

yes

Other quality assurance:

other: Council Regulation (EC) No 440/2008 (as amended) of 30 May 2008 and REACH Regulation (EU) No 1907/2006 of the European Parliament and of the Council

Type of method:

pour point

Specific details on test material used for the study:

SOURCE OF TEST MATERIAL
- Source and lot/batch No. of test material: 8515025
- Expiration date of the lot/batch: 23 March 2018

STABILITY AND STORAGE CONDITIONS OF TEST MATERIAL
- Storage condition of test material: Room temperature (15 - 25 degree Celsius)

FORM AS APPLIED IN THE TEST (if different from that of starting material) -
- Physical state: Viscous liquid (The test item becomes a waxy solid on standing at room temperature for prolonged periods)

Key result

Melting / freezing pt.:

3 °C

Remarks on result:

other: The pour point, defined as the lowest temperature at which the test item was observed to flow, was found to be 3°C (mean of 3 degrees C and 3 degrees C).

Conclusions:

Under the conditions of the study, the pour point, defined as the lowest temperature at which the test item was observed to flow, was found to be 3°C (mean of 3°C and 3°C).

Executive summary:

The freezing temperature of the test substance was evaluated according to EC Method A.1, OECD Method 102, under GLP and as the test item was observed to solidify without crystallisation in a preliminary test, a pour point test was considered appropriate and was determined according to ASTM Test Method D97.

Procedure: A cylindrical glass jar was filled to a specified mark with test item, which had been melted at 60°C to liquefy and make homogenous. The jar was sealed using a cork fitted with an ASTM 5C/IP1C high cloud and pour thermometer and then placed in (but insulated from) a metal jacket. The sample was placed in a waterbath maintained at 24°C. At 3°C intervals beginning at 45°C, the jar was removed from the jacket, tilted to check for sample movement and then returned to the jacket, the procedure being performed in 3 seconds. At 27°C, the sample was transferred to an ice/water bath and, at temperatures below 9°C, to an acetone/solid carbon dioxide bath maintained at -18°C. When no initial movement was observed, the jar was held in a horizontal position for 5 seconds to check for sample movement and the procedure was condcuted in duplicate.

Under the conditions of the study, the pour point, defined as the lowest temperature at which the test item was observed to flow, was found to be 3°C (mean of 3°C and 3°C).

Description of key information

The freezing temperature ofthe test substancewas evaluated according toEC Method A.1, OECD Method 102, under GLP and as the test item was observed to solidify without crystallisation in a preliminary test, a pour point test was considered appropriate and was determined according to ASTM Test Method D97.

Procedure:A cylindrical glass jar was filled to a specified mark with test item, which had been melted at 60°C to liquefy and make homogenous. The jar was sealed using a cork fitted with an ASTM 5C/IP1C high cloud and pour thermometer and then placed in (but insulated from) a metal jacket. The sample was placed in a waterbath maintained at 24°C. At 3°C intervals beginning at 45°C, the jar was removed from the jacket, tilted to check for sample movement and then returned to the jacket, the procedure being performed in 3 seconds. At 27°C, the sample was transferred to an ice/water bath and, at temperatures below 9°C, to an acetone/solid carbon dioxide bath maintained at -18°C. When no initial movement was observed, the jar was held in a horizontal position for 5 seconds to check for sample movement and the procedure was condcuted in duplicate.

Under the conditions of the study, the pour point, defined as the lowest temperature at which the test item was observed to flow, was found to be 3°C (mean of 3°C and 3°C).

Key value for chemical safety assessment

Melting / freezing point at 101 325 Pa:

3 °C