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Physical & Chemical properties

Melting point / freezing point

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Endpoint:
melting point/freezing point
Data waiving:
other justification
Justification for data waiving:
other:
Reason / purpose:
data waiving: supporting information
Reason / purpose:
data waiving: supporting information
Reason / purpose:
data waiving: supporting information
Reason / purpose:
data waiving: supporting information
Endpoint:
melting point/freezing point
Type of information:
experimental study
Adequacy of study:
supporting study
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: Handbook peer reviewed.
Principles of method if other than guideline:
No data on test method.
GLP compliance:
not specified
Type of method:
other: No data
Key result
Decomposition:
yes
Decomp. temp.:
180 - 200 °C

Sodium chlorite decomposes at 180–200 ºC.

Conclusions:
Sodium chlorite decomposes at 180–200 ºC.
Executive summary:

Sodium chlorite decomposes at 180–200 ºC. No data provided on the method.

Endpoint:
melting point/freezing point
Type of information:
experimental study
Adequacy of study:
supporting study
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
data from handbook or collection of data
Remarks:
ICSC database.
Principles of method if other than guideline:
No data on test method.
GLP compliance:
not specified
Type of method:
other: No data
Key result
Decomposition:
yes
Decomp. temp.:
180 - 200 °C

Sodium chlorite decomposes below melting point at 180-200 °C.

Conclusions:
Sodium chlorite decomposes below melting point at 180-200 °C.
Executive summary:

Sodium chlorite decomposes below melting point at 180-200 °C. No data provided on the method.

Endpoint:
melting point/freezing point
Type of information:
experimental study
Adequacy of study:
supporting study
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
data from handbook or collection of data
Remarks:
Handbook peer reviewed.
Principles of method if other than guideline:
No data on test method.
GLP compliance:
not specified
Type of method:
other: No data
Key result
Decomposition:
yes
Decomp. temp.:
180 - 200 °C

Sodium chlorite decomposes on heating with evolution of O2.

Conclusions:
Sodium chlorite decomposes on heating with evolution of O2.
Executive summary:

Sodium chlorite decomposes on heating with evolution of O2. No data provided on the method.

Endpoint:
melting point/freezing point
Type of information:
experimental study
Adequacy of study:
supporting study
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
data from handbook or collection of data
Remarks:
Handbook peer reviewed.
Principles of method if other than guideline:
No data on test method.
GLP compliance:
not specified
Type of method:
other: No data
Key result
Decomposition:
yes
Decomp. temp.:
180 - 200 °C

Sodium chlorite decomposes at 180–200 ºC.

Conclusions:
Sodium chlorite decomposes at 180–200 ºC.
Executive summary:

Sodium chlorite decomposes at 180–200 ºC. No data provided on the method.

Endpoint:
melting point/freezing point
Type of information:
experimental study
Adequacy of study:
supporting study
Study period:
February 21, 2002
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to
Guideline:
OECD Guideline 102 (Melting point / Melting Range)
Deviations:
no
Qualifier:
according to
Guideline:
EU Method A.1 (Melting / Freezing Temperature)
Deviations:
no
GLP compliance:
yes (incl. certificate)
Type of method:
hot stages
Key result
Melting / freezing pt.:
232 - 236 °C
Atm. press.:
97.1 kPa

Comments: according to the Sponsor, the test item contains impurities (purity = 76.80%) that leads to the appearance of a “milky liquid” on reaching the melting point but it is not possible to determine whether a liquid state can be attained for a substance at a purity of 100%. However, it is impossible to prepare a test item more pure than 80% for stability reasons

Conclusions:
The mean melting point of the test item was in the experimental conditions:234°C ± 2°C.
Executive summary:

The aim of this study was the determination of the melting point of the test material.

The test procedure used was the EU A1 method and the OECD test guideline 102.

The apparatus for analysis was the Kofler hot bench.

The result was as follows:

the mean melting point of the test item was in the experimental conditions: 234°C ± 2°C.

Description of key information

Data waiving: In accordance to REACH Annex XI Section 2, with reference to the guidance mentioned in REACH Art 13(3) the test guidance "ECHA guidance on Information requirements and chemical safety assessment Chapter R.7a Endpoint specific guidance" needs to be respected. This guidance (R.7.1.2.3) indicates that for substances that decompose or sublime before melting, the decomposition or sublimation temperature should be reported.

Key value for chemical safety assessment

Additional information

Data waiving: In accordance to REACH Annex XI Section 2, with reference to the guidance mentioned in REACH Art 13(3) the test guidance "ECHA guidance on Information requirements and chemical safety assessment Chapter R.7a Endpoint specific guidance" needs to be respected. This guidance (R.7.1.2.3) indicates that for substances that decompose or sublime before melting, the decomposition or sublimation temperature should be reported.

Supporting studies: Data from handbooks:

Sodium chlorite decomposes below melting point at 180-200 °C.

Supporting study: Experimental results:

Test method according to EU A1 method and the OECD test guideline 102 (purity 76.80%).

The mean melting point of the test item was in the experimental conditions: 234°C ± 2°C.