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Physical & Chemical properties

Melting point / freezing point

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Reference
Endpoint:
melting point/freezing point
Type of information:
experimental study
Adequacy of study:
key study
Study period:
15/2/2018 - 15/2/2018
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to guideline
Guideline:
OECD Guideline 102 (Melting point / Melting Range)
Deviations:
no
Qualifier:
according to guideline
Guideline:
EU Method A.1 (Melting / Freezing Temperature)
Deviations:
no
GLP compliance:
yes (incl. QA statement)
Type of method:
method to determine freezing temperature
Specific details on test material used for the study:
SOURCE OF TEST MATERIAL
- Source and lot/batch No.of test material: Osaka Soda Co. Ltd Lot no. 40201
- Expiration date of the lot/batch: 26/01/2019
- Purity test date: 26/9/2017

RADIOLABELLING INFORMATION (if applicable)
- Radiochemical purity: Not applicable
- Specific activity: Not applicable
- Locations of the label: Not applicable
- Expiration date of radiochemical substance: Not applicable

STABILITY AND STORAGE CONDITIONS OF TEST MATERIAL
- Storage condition of test material: Not specified
- Stability under test conditions: Not specified
- Solubility and stability of the test substance in the solvent/vehicle: Not specified
- Reactivity of the test substance with the solvent/vehicle of the cell culture medium:Not specified

TREATMENT OF TEST MATERIAL PRIOR TO TESTING
- Treatment of test material prior to testing: Not specified
- Preliminary purification step (if any): None
- Final dilution of a dissolved solid, stock liquid or gel: None
- Final preparation of a solid: Not specified

FORM AS APPLIED IN THE TEST (if different from that of starting material) 11.2 g colurless/yellow liquid (sample tested as received)

TYPE OF BIOCIDE/PESTICIDE FORMULATION (if applicable)

OTHER SPECIFICS:
Key result
Melting / freezing pt.:
< -20 °C
Remarks on result:
not determinable because of methodological limitations

The sample was held at -26°C for ca. 15 hours. No phase change from liquid to solid was observed and therefore a freezing point could not be determined. No further testing was performed.

Conclusions:
The determination of the freezing temperature of MDAC using OECD Test Guideline 102 and EU Regulation (EC) 440/2008 was explored. No phase change was observed after 15 hours at -26°C, and therefore the freezing temperature could not be determined.
Executive summary:

A test to determine the freezing temperature of MDAC under guideline conditions was undertaken using freezing temperature devices with a liquid bath and calibrated, digital thermocouple system. 11.2 g of liquid sample was cooled to a minimum temperature of -26°C and this temperature maintained for 15 hours. No phase change from liquid to solid was observed. As a result, no further testing was performed.

Description of key information

The freezing point was found to be < -20°C.

Key value for chemical safety assessment

Additional information