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Administrative data

Endpoint:
melting point/freezing point
Type of information:
experimental study
Adequacy of study:
key study
Study period:
10. May to 08. August 2011
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: Study performed according to OECD guideline but not under GLP conditions

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2011
Report date:
2011

Materials and methods

Test guidelineopen allclose all
Qualifier:
according to guideline
Guideline:
OECD Guideline 102 (Melting point / Melting Range)
Qualifier:
according to guideline
Guideline:
EU Method A.1 (Melting / Freezing Temperature)
Principles of method if other than guideline:
Procedure

Thermal Stability: Differential Scanning Calorimetry
The thermal stability was determined by differential scanning calorimetry (DSC). The test item and the standard material (aluminium oxide) were heated up from ambient temperature to the final temperature (250 °C) at a constant heating rate (3 K/min) in a defined atmosphere (nitrogen). Closed glass crucibles were used as containers for the test item and the standard material. The quantity of heat absorbed or released was measured and recorded. Approx. 10 mg of the test item were used.

Melting Point / Melting Rang, Boiling Point / Boiling Range: Differential Scanning Calorimetry
The determination of the melting point / boiling point was carried out by differential scanning calorimetry (DSC). The test item was heated up from the starting temperature (-100 °C, -20 °C and 10 °C, respectively) to the final temperature (300 and 450 °C, respectively) at a constant heating rate (10 K/min) in a defined atmosphere (nitrogen). The quantity of heat absorbed or released was measured and recorded. Aluminium crucibles with a small hole were used as containers for the test item and as empty reference crucible. About 11 mg to 19 mg of the test item were used.
GLP compliance:
no
Type of method:
other: differential scanning calorimetry (DSC)

Test material

Constituent 1
Reference substance name:
Absorbent N grade A
IUPAC Name:
Absorbent N grade A
Details on test material:
- Name of test material (as cited in study report): Absorbent N grade A
- Substance type: UVCB
- Physical state: Brown liquid
- Stability under test conditions: months
- Storage condition of test material: room temperature, in the dark

Results and discussion

Melting / freezing point
Melting / freezing pt.:
> -100 °C
Atm. press.:
ca. 101 kPa
Decomposition:
no
Sublimation:
no

Any other information on results incl. tables

 Individual Results

Thermal Stability (DSC)

TheDSC-measurement in a closed glass crucible showed noendothermic or exothermic effect up to the maximum temperature of the measurement of 250 °C.

Melting Point / Melting Range (DSC)

Two measurements in aluminium crucibles with a hole showed no defined endothermic effects in the temperature range -100 °C to ambient temperature.

Ident-No.

Onset / °C

Temperature range / °C

Crucible

31878

-

-100 - 300

Aluminium crucible with a hole

31879

-

-100 - 300

Aluminium crucible with a hole

The test item has no melting point above -100 °C under atmospheric conditions. Possibly a melting point could not be determined due to the large number of substances of which the test item is assembled.

Applicant's summary and conclusion

Conclusions:
The test item has no melting point above -100 °C under atmospheric conditions.
Executive summary:

The test item has no melting point above -100 °C under atmospheric conditions.