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Diss Factsheets

Administrative data

Endpoint:
melting point/freezing point
Type of information:
experimental study
Adequacy of study:
key study
Study period:
18/06/2010 al 18/06/2010
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
other: El estudio se realizó de conformidad con la directiva CE 440/2008, Método A.1 "fusión / congelación de temperatura", de fecha 31. Mayo de 2008 bajo el cumplimiento de las BPL

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2010

Materials and methods

Test guideline
Qualifier:
according to guideline
Guideline:
EU Method A.1 (Melting / Freezing Temperature)
Deviations:
no
Principles of method if other than guideline:
The capillary method is used to determine the melting temperature. The substance is heated up to 405°C in a glass capillary tube within an aluminium block until melting can be observed. In additon, a second test system is established to achieve melting of substances with higher melting temperature. The substance is heated in a porcelain crucible in a muffle oven up to 1095°C according to an internal operation protocol of the testing laboratory (SOP 114 003 70, edition 1 dated 03. September 2009).
GLP compliance:
no
Type of method:
capillary method

Test material

Constituent 1
Reference substance name:
Charcoal
EC Number:
240-383-3
EC Name:
Charcoal
Cas Number:
16291-96-6
IUPAC Name:
Carbón vegetal
Details on test material:
Name: Charcoal (Probe 2: C-Fix = 80.5%)
Batch no.: 29004
Appearance: Charcoal typic
CAS No.: 16291-96-6
EINECS-No.: 240-383-3
Purity: C-Fix = 80.5%
Expiry date: Dec. 2030
Storage: Room temperature 20 ± 5 °C, keep away from humidity

Results and discussion

Melting / freezing point
Decomposition:
no
Sublimation:
no
Remarks on result:
other: Charcoal showed no signs of melting under the test conditions described.

Any other information on results incl. tables

The determination was performed in duplicate. In both determinations, no melting was observed up to 404°C. In an additional experiment, the test item was set into a muffle oven and heated up to 1095 °C.

No melting of the test item of charcoal was detected up to a temperature of 1095°C.

Under the experimental conditions used in the study (highest temperature: 1095°C), no melting point of the test item charcoal could be determined.

Applicant's summary and conclusion

Conclusions:
Since there were no signs of melting up to a temperature of >1000°C, no melting point of the test item could be determined.
Executive summary:

Determination of the melting point of charcoal was conducted according to OECD 102 resp. EU A.1 test method and under the GLP compliance.

The test item was ground and sieved. A dried fraction was filled in a glass capillary tube and set in an aluminium block. The aluminium block was heated up to 404°C and the test item was constantly observed to determine the melting point. As no melting could be observed, the test item was heated up to 1095°C in a muffle oven. Again no melting was observed.

Under the experimental conditions used in the study (highest temperature: 1095°C), no melting point of the test item charcoal could be determined.