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Physical & Chemical properties

Melting point / freezing point

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Reference
Endpoint:
melting point/freezing point
Type of information:
read-across from supporting substance (structural analogue or surrogate)
Adequacy of study:
key study
Study period:
2004-11-17 to 2005-01-11
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Justification for type of information:
REPORTING FORMAT FOR THE ANALOGUE APPROACH
[Please provide information for all of the points below. Indicate if further information is included as attachment to the same record, or elsewhere in the dataset (insert links in 'Cross-reference' table)]

1. HYPOTHESIS FOR THE ANALOGUE APPROACH
[Describe why the read-across can be performed (e.g. common functional group(s), common precursor(s)/breakdown product(s) or common mechanism(s) of action]

2. SOURCE AND TARGET CHEMICAL(S) (INCLUDING INFORMATION ON PURITY AND IMPURITIES)
[Provide here, if relevant, additional information to that included in the Test material section of the source and target records]

3. ANALOGUE APPROACH JUSTIFICATION
[Summarise here based on available experimental data how these results verify that the read-across is justified]

4. DATA MATRIX
Reason / purpose for cross-reference:
read-across source
Qualifier:
according to guideline
Guideline:
OECD Guideline 102 (Melting point / Melting Range)
Version / remarks:
adopted 1995
Deviations:
no
Qualifier:
according to guideline
Guideline:
EU Method A.1 (Melting / Freezing Temperature)
Version / remarks:
1992
Deviations:
no
GLP compliance:
yes (incl. QA statement)
Remarks:
signed 2004-09-06
Type of method:
differential scanning calorimetry
Specific details on test material used for the study:
- Name of test material (as cited in study report): Naftovin BLS
- Chemical name: Lead oxide sulphate
- Physical state: powder, white
- Analytical purity: 93.4 % (calculated based on lead content)
- Batch No.: 714537.33
- Stability: until 03/2005
- Storage condition of test material: ambient temperature in tightly closed container
No further information on test material was stated.
Melting / freezing pt.:
> 600 °C
Atm. press.:
ca. 1 013 mBar
Remarks on result:
other: The test item has no melting point at atmospheric pressure up to the final test temperature of 600°C.
Conclusions:
The test item has no melting point at atmospheric pressure up to the final test temperature of 600°C.

Description of key information

The test item has no melting point at atmospheric pressure up to the final test temperature of 600°C (study result, EU A.1 method).

Key value for chemical safety assessment

Melting / freezing point at 101 325 Pa:
600 °C

Additional information