Benzene, mono-C10-13-alkyl derivs., distn. residues, sulfonated, barium salts

Melting point / freezing point

Link to relevant study record(s)

Reference

Endpoint:

melting point/freezing point

Type of information:

experimental study

Adequacy of study:

key study

Study period:

2017-10-23 - 2017-12-06

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Reason / purpose for cross-reference:

reference to same study

Reason / purpose for cross-reference:

reference to same study

Reason / purpose for cross-reference:

reference to same study

Qualifier:

according to guideline

Guideline:

EPA OPPTS 830.7200 (Melting Point / Melting Range)

Version / remarks:

1998

Deviations:

no

Qualifier:

according to guideline

Guideline:

OECD Guideline 102 (Melting point / Melting Range)

Version / remarks:

1995

Deviations:

no

GLP compliance:

yes

Type of method:

capillary method

Melting / freezing pt.:

62.8 °C

Atm. press.:

757 mm Hg

Decomposition:

no

Sublimation:

no

Melting / freezing pt.:

>= 62.8 - <= 89.1 °C

Atm. press.:

757 mm Hg

Decomposition:

no

Sublimation:

no

A melting point approximation test (Rapid Scan) was performed and did result in a melting point of 60°C (333 K) and a melting range of 60°C (333 K) to 105°C (378 K). These results were used to determine the range of temperatures used in the definitive test. During the definitive testing the barium sulfonate test substance samples provided a mean melting point of 62.8 ± 2.5°C and a mean melting range from 62.8 ± 2.5°C (336.0 K) to 89.1 ± 1.1°C (362.2 K) - for the three tests. At room temperature, the barium sulfonate test substance was a solid, jelly-like material and was brown in color. At the melting point the test material gave a semi-glossy appearance. At the end of the melting range the sample appeared to collapse and drain into the boiling tube. Upon removal from the instrument (at test termination), the barium sulfonate test substance remained brown in color. Results of the melting point data for the test substance are presented in the table below.

Sample	Instrument Gradient (°C/min)	Barometric Pressure (mm Hg)	Start of Melting Range (°C)	End of Melting Range (°C)	Melting Point (°C)
1	1.0	757	64.0	89.1	64.0
2			64.5	88.0	64.5
3			60.0	90.1	60.0
Overall Means: Standard Deviations: CV (%):		757 0 0.0	62.8 2.5 3.93 (0.73)	89.1 1.1 1.18 (0.29)	62.8 2.5 3.93 (0.73)

Conclusions:

The melting point of the barium sulfonate test substance was determined to be 62.8 ± 2.5°C (CV = 3.93%). The melting range was 62.8 ± 2.5°C to 89.1 ± 1.1°C (CV = 1.18%). No boiling point or boiling point range was achieved.

Executive summary:

Test was conducted according to GLP and to OECD guideline # 102 and to U.S. EPA Product Properties Guideline OPPTS 830.7200.

The melting point of the barium sulfonate test substance was determined to be 62.8 ± 2.5°C (CV = 3.93%). The melting range was 62.8 ± 2.5°C to 89.1 ± 1.1°C (CV = 1.18%). No boiling point or boiling point range was achieved.

Description of key information

The melting point of the barium sulfonate test substance was determined to be 62.8 ± 2.5°C (CV = 3.93%). The melting range was 62.8 ± 2.5°C to 89.1 ± 1.1°C (CV = 1.18%). No boiling point or boiling point range was achieved.

Key value for chemical safety assessment

Melting / freezing point at 101 325 Pa:

62.8 °C