Registration Dossier

Physical & Chemical properties

Boiling point

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Administrative data

Endpoint:
boiling point
Type of information:
experimental study
Adequacy of study:
key study
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
other: Study carried out according to GLP and was designed to be compatible with Method A2 Boiling Temperature of Commission Regulation (EC) No 440/2008 of 30 May 2008.

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2010

Materials and methods

Test guideline
Qualifier:
equivalent or similar to
Guideline:
EU Method A.2 (Boiling Temperature)
Deviations:
not applicable
Type of method:
differential scanning calorimetry

Test material

Reference
Name:
Unnamed
Type:
Constituent
Details on test material:
- Name of test material (as cited in study report): SLI (76) Stripped
- Molecular weight (if other than submission substance): 330.419g/mol
- Smiles notation (if other than submission substance): [O-]S(=O)(CCOC(CCCCCCCCCCC)=O)=O.[Na+]
- Substance type: Organic
- Physical state: white crystalline solid, cream coloured granular powder
- Analytical purity: 96%
- Impurities (identity and concentrations): Sodium Isethionate: 1.45%; Sodium vinyl sulphonate: 0.185%; Volatiles: 0.48%; Free fatty acid C12-18): 1.885
- Purity test date: 2008-06-03
- Storage condition of test material: ambient/dessicate under nitrogen

Results and discussion

Boiling point
Boiling pt.:
> 565.32 °C
Atm. press.:
>= 100.56 - <= 100.67 kPa
Decomposition:
yes
Decomp. temp.:
ca. 275 °C
Remarks on result:
other: As a result of decomposition, no boiling point could be determined in experimental study. Boiling point listed (565.32) is a calculated value.

Applicant's summary and conclusion

Conclusions:
The test item has been determined to decompose from approximately 275 degrees C (548 K) at 100.56 to 100.67 kPa. As the test item decomposed, no value for boiling temperature could be determined.
A calculated value of boiling temperature, using the smallest component in the test item (sodium octanoyl isethionate), gave a result of greater than 565.32 degrees C (>838K).
Executive summary:

In a test to determine the boiling point of SLI (76) Stripped, the test item was determined to decompose from approximately 275 degrees C (548K) at 100.56 to 100.67 kPa, by differential scanning calorimetry, using ASTM E537 -86, designed to be compatible with method A2 Boiling Temperature of Commission Regulation (EC) No 440/2008 of 30 May 2008. As the test item decomposed, no value for boiling temperature could be determined.

A calculated value of boiling temperature, using the smallest component in the test item (sodium octanoyl isethionate), gave a result of greater than 565.32 degrees C (>838K).