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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:
29/07/2016 – 29/07/2016
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
test procedure in accordance with national standard methods
Justification for type of information:
Experimental result using standard methods of analysis
Qualifier:
according to guideline
Guideline:
other: as mentioned below
Principles of method if other than guideline:
The Freezing point determination of test item 3-methyl-4-(2,6,6-trimethyl-2-cyclohexen-1-yl)-3-buten-2-one (CAS No. 127-51-5) was done using crushed ice and salt bath.
GLP compliance:
no
Type of method:
other: standard laboratory method
Specific details on test material used for the study:
- Name of test material : 3-methyl-4-(2,6,6-trimethyl-2-cyclohexen-1-yl)-3-buten-2-one
- Common name : alpha-isomethyl ionone
- Molecular formula : C14H22O
- Molecular weight : 206.327 g/mol
- Smiles notation : C1([C@@H](\C=C(\C(C)=O)C)C(=CCC1)C)(C)C
- InChl : 1S/C14H22O/c1-10-7-6-8-14(4,5)13(10)9-11(2)12(3)15/h7,9,13H,6,8H2,1-5H3/b11-9+
- Substance type : Organic
- Physical state : Liquid
Key result
Melting / freezing pt.:
< -15.6 °C
Atm. press.:
965.7 hPa
Decomposition:
no
Sublimation:
no
Remarks on result:
other: other details not available

TEST DESCRIPTION AND RESULTS :

Method Details

Observations 

Remarks if, any

Method

Method according to Cooling Curve 

 

 

 

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

g/ml

1 ml

 

Type of cooling bath used

·        Cold Water

·        Crushed Ice

·        Crushed Ice-Salt

·        Dry Ice

·        Other (specify)

Crushed Ice-Salt

 

 

Type and model no. of temperature sensor used

·        Glass thermometer

·        Thermocouple

·        Thermistor

·        Other (specify)

Thermistor

 

 

Atmospheric pressure

hPa

965.7

 

Freezing point °C

°C

less than -15.6 °C

 

 

Conclusions:
The Freezing point of 3-methyl-4-(2, 6, 6-trimethyl-2-cyclohexen-1-yl)-3-buten-2-one (CAS No.127-51-5) was determined using crushed ice and salt. No freezing was observed up to -15.6°C.
Executive summary:

The Freezing point of 3-methyl-4-(2, 6, 6-trimethyl-2-cyclohexen-1-yl)-3-buten-2-one (CAS No.127-51-5) was determined with crushed ice and salt bath and the freezing point was concluded to be less than -15.6°C at 965.7 hPa.

Description of key information

The Freezing point of 3-methyl-4-(2, 6, 6-trimethyl-2-cyclohexen-1-yl)-3-buten-2-one (CAS No. 127-51-5) was determined with crushed ice and salt bath and the freezing point was concluded to be less than -15.6 °C at 965.7 hPa

Key value for chemical safety assessment

Melting / freezing point at 101 325 Pa:
-15.6 °C

Additional information

The Freezing point of 3-methyl-4-(2, 6, 6-trimethyl-2-cyclohexen-1-yl)-3-buten-2-one (CAS No.127-51-5) was determined with crushed ice and salt bath and the freezing point was concluded to be less than -15.6°C at 965.7 hPa.