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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:
2011
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to
Guideline:
OECD Guideline 102 (Melting point / Melting Range)
GLP compliance:
not specified
Type of method:
differential scanning calorimetry
Specific details on test material used for the study:
- Name of test material (as cited in study report): Aerophine 3418A Promoter, stripped
- IUPAC nomenclature - Sodium diisobutyldithiophosphinate
- Lot WEA102051
- Appearance - White powder with lumps
- CAS No. 13360-78-6
- Molecular Formula - C8H18PS2.Na
- Molecular Weight - 232 g/mole
- Purity > 99%
Melting / freezing pt.:
> 184 - < 190 °C
Atm. press.:
1 013 hPa
Decomposition:
no
Key result
Melting / freezing pt.:
188 °C
Atm. press.:
1 013 hPa
Decomposition:
no

Melting Point / Melting Range of Test Substance

Specimen No.

Heat Cycle

Onset (Melting Point) (°C)

Peak (°C)

Endset (°C)

Melting Range (°C)

Enthalpy (joules/g)

1

1

183.57

187.94

190.24

183.6 – 190.2

54

2

1

183.85

188.10

190.46

183.8 – 190.5

55

1

2

183.62

187.94

190.23

183.6 – 190.2

51

2

2

183.75

188.10

190.40

183.8 – 190.4

54

Conclusions:
The melting point was measured to be 188 °C.
Executive summary:

Melting Point - The mean heating range is 184 to 190°C. The melting point is the peak from the DSC curve: 188°C.  Melting point / range were determined by DSC and confirmed with capillary method. The test substance was held under vacuum at room temperature for 24 hours prior to analysis.

Description of key information

The mean heating range is 184 to 190°C. The melting point is the peak from the DSC curve: 188°C.

Key value for chemical safety assessment

Melting / freezing point at 101 325 Pa:
188 °C

Additional information

Melting point / range were determined by DSC and confirmed with capillary method. The test substance was held under vacuum at room temperature for 24 hours prior to analysis.