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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:
25-02-2017 – 25- 02-2017
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Justification for type of information:
Experimental test result performed using standard test guidelines
Qualifier:
according to guideline
Guideline:
other: as mention below
Principles of method if other than guideline:
The Freezing point determination of 1'-acetonaphthone (CAS No.941-98-0) was done using crushed ice and salt.
GLP compliance:
no
Type of method:
other: standard laboratory method
Key result
Melting / freezing pt.:
< -13.65 °C
Atm. press.:
979.4 hPa
Decomposition:
no
Sublimation:
no
Remarks on result:
other: other details not available

Observation Table & Result :

 Method Details    Observations
 Guideline  -  
 Method Freezing Temperature Method  
 Principle of method

 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

ml/g

 1 ml

 Type of cooling bath used

  1. Cold Water
  2. Crushed Ice
  3. Crushed Ice-Salt
  4. Dry Ice
  5. Other (specify)

 

Crushed Ice-

Salt

Type and model no. of temperature sensor used

  1. Glass thermometer
  2. Thermocouple
  3. Thermistor
  4. Other (specify)

Glass

thermometer

Atmospheric pressure

hPa

 979.4 hPa

 Freezing point °C

 °C

 less than 13.65 °C

Conclusions:
The Freezing point determination of 1'-acetonaphthone (CAS No.941-98-0) was done using crushed ice and salt. No freezing was observed up to -13.65 °C. Hence, the freezing point was inferred to be less than -13.65 °C at 979.4 hPa.
Executive summary:

The Freezing point determination of 1'-acetonaphthone (CAS No.941-98-0) was done using crushed ice and salt. No freezing was observed up to -13.65 °C. Hence, the freezing point was inferred to be less than -13.65 °C at 979.4 hPa.

Description of key information

The Freezing point determination of 1'-acetonaphthone (CAS No.941-98-0) was done using crushed ice and salt. No freezing was observed up to -13.65 °C. Hence, the freezing point was inferred to be less than -13.65 °C at 979.4 hPa.

Key value for chemical safety assessment

Melting / freezing point at 101 325 Pa:
-13.65 °C

Additional information

The Freezing point determination of 1'-acetonaphthone (CAS No.941-98-0) was done using crushed ice and salt. No freezing was observed up to -13.65 °C. Hence, the freezing point was inferred to be less than -13.65 °C at 979.4 hPa.

Based on available data from authoritative database the freezing point of chemical 1-(1-naphthyl)ethanone is determined to be 10.5 degree C. Other supporting study from review article also suggests that the freezing point of chemical 1-(1-naphthyl)ethanone was reported to be 10 degree C, 10.2 degree C & in the range between 9 -10 Deg C.

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