ColaLiquids DC5, DL, DM (Commercial names)Cocamide DIPA (INCI name)

Boiling point

Link to relevant study record(s)

Reference

Reference 1

Endpoint:

boiling point

Type of information:

experimental study

Adequacy of study:

supporting study

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Qualifier:

according to guideline

Guideline:

OECD Guideline 103 (Boiling Point)

Version / remarks:

Siwoloboff method with photocell detection per OECD method 103 (27-07-1995).

Deviations:

no

GLP compliance:

no

Other quality assurance:

ISO/IEC 17025 (General requirements for the competence of testing and calibration laboratories)

Type of method:

photocell detection

Specific details on test material used for the study:

Chemical Name Fatty acids, C8-18 and C18-unsatd.,compds. with diisopropanolamine
Physical State liquid
CAS # 68855-69-6
Manufacturer Colonial Chemical Inc.
Sample ID 53467J16
Received on November 22, 2016
Tested on January 4, 2017

Key result

Boiling pt.:

200.4 °C

Atm. press.:

1 005 mBar

Conclusions:

The boiling point of the sample was determined to be 200.4°C. The sample became discolored indicating it decomposed during the test.

Reference 2

Endpoint:

boiling point

Type of information:

experimental study

Adequacy of study:

key study

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Qualifier:

according to guideline

Guideline:

other: Thermal gravimetric analysis

Version / remarks:

Due to the nature of the sample, boiling point was determined by thermogravimetric analysis (TGA), which is a deviation from OECD Guidelines for The Testing of Chemicals, 103, July 27 1995

Deviations:

yes

Remarks:

TGA analysis

Principles of method if other than guideline:

An attempt was made to determine the boiling point of the sample by the Siwoloboff method in a heated metal block using photocell detection consistent with OECD Guidelines for The Testing of Chemicals, 103, July 27 1995. This test method is unsuitable for viscous and solid samples. As a result, a deviation from the OECD 103 guideline was necessary and the boiling point test was obtained by performing thermogravimetric analysis (TGA) on the dried sample.
Using thermogravimetric analysis, the sample is placed in a DSC hermetic pan with a laser drilled pinhole in the lid. When the sample starts to boil, the vapor pressure in the pan increases causing a weight loss through the pinhole in the lid. The onset of the derivative of this weight loss is taken to be the boiling point of the sample.
The boiling point was measured using a TA Instruments 2950 TGA and hermetic pin-hole DSC pans. Approximately 4 mg samples were analyzed. The sample was heated from room temperature to 500°C at 5°C/min. Two replicate trials were performed.

GLP compliance:

no

Other quality assurance:

ISO/IEC 17025 (General requirements for the competence of testing and calibration laboratories)

Type of method:

other: Thermal Gravimetric Analysis (TGA)

Specific details on test material used for the study:

Chemical Name Fatty acids, C8-18 and C18-unsatd.,compds. with diisopropanolamine
Physical State liquid
CAS # 68855-69-6
Manufacturer Colonial Chemical Inc.
Sample ID 53467J16
Received on November 22, 2016
Tested on February 7, 2017

Key result

Boiling pt.:

197 °C

Atm. press.:

1 005 mBar

Fatty acids, C8-18 and C18-unsatd.,compds. with diisopropanolamine (Rep. #1)

Boiling Point (°C) = 204

Fatty acids, C8-18 and C18-unsatd.,compds. with diisopropanolamine (Rep. #2)

Boiling Point (°C) = 189

Average = 197 °C

Conclusions:

The TGA results indicate that the sample has several components boiling at different temperatures. The largest boiling component has an average boiling point of 197°C and is not completely resolved from several higher boiling components. This is not unexpected since the substance is a Reaction Mass and UVCB and contians several different components.

Description of key information

An attempt was made to determine the boiling point of the sample by the Siwoloboff method in a heated metal block using photocell detection consistent with OECD Guidelines for The Testing of Chemicals, 103, July 27 1995. This test method is unsuitable for viscous samples. As a result, a deviation from the OECD 103 guideline was necessary and the boiling point test was obtained by performing thermogravimetric analysis (TGA) on the dried sample.

The results obtained by both method were actually quite close. The Siwoloboff method gave a value of 200.4 °C and the TGA duplicates gave 189 °C and 204 °C, average 197°C.

Variability is not unexpected since the substance is a Reaction Mass and UVCB and contians several different components.

Key value for chemical safety assessment

Boiling point at 101 325 Pa:

197 °C