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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:
12-09-2018 – 12- 09-2018
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Justification for type of information:
Data is from experimental study report
Qualifier:
according to guideline
Guideline:
other: as mentioned below
Principles of method if other than guideline:
The freezing point of a pure sample is the temperature at which transition from liquid to solid state takes place at atmospheric pressure.
GLP compliance:
no
Type of method:
other: Freezing Temperature Method
Specific details on test material used for the study:
- Name of test material: Ionone
- IUPAC name: Reaction mass of 4-(2,6,6-trimethylcyclohex-2-ene-1-yl)-but-3-ene-2-one and 4-(2,6,6-trimethylcyclohex-1-ene-1-yl)-but-3-ene-2-one
- Molecular formula: C13H20O
- Molecular weight: 192.3 g/mole
- Smiles : C1([C@@H](C(=CCC1)C)\C=C\C(C)=O)(C)C
- Inchl: 1S/C13H20O/c1-10-6-5-9-13(3,4)12(10)8-7-11(2)14/h6-8,12H,5,9H2,1-4H3/b8-7+
- Substance type: Organic
- Physical state: liquid
Key result
Melting / freezing pt.:
< 10.42 °C
Atm. press.:
977.8 hPa
Remarks on result:
other: No other details available

 Method Details      Observations
 Method  Freezing Temperature Method  -
 Principle of Freezing point test The freezing point of a pure sample is the temperature at which transition from liquid to solid state takes place at atmospheric pressure.   -
 Quantity of test item used     1 ml
 Type of cooling bath used
  • Cold Water
  • Crushed Ice
  • Crushed Ice-Salt Dry Ice
  • Other (specify) 
Crushed IceSalt 
 Type and model no. of temperature sensor used
  •  Glass thermometer
  • Thermocouple Thermistor
  • Other (specify)
 Thermistor
 Atmospheric pressure  hPa  977.8 hPa
  Freezing point °C  °C  less than - 10.42 °C
Conclusions:
The Freezing point of Ionone; CAS No. 8013-90-9 was determined with Freezing Temperature Method and it was found to be less than -10.42 °C at 977.8 hPa.
Executive summary:

The Freezing point determination of Ionone (CAS No.8013-90-9) was done using crushed ice + salt. No freezing was observed up to -10.42°C. Hence, the freezing point was inferred to be -10.42°C at hPa.

Description of key information

The freezing point of test chemical was determined by Freezing Temperature Method.  No freezing was observed up to -10.20°C. Hence, the freezing point was inferred to be less than -10.20°C.

Key value for chemical safety assessment

Melting / freezing point at 101 325 Pa:
-10.2 °C

Additional information

The freezing point of test chemical was determined by Freezing Temperature Method.  No freezing was observed up to -10.20°C. Hence, the freezing point was inferred to be less than -10.20°C.