Registration Dossier
Registration Dossier
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EC number: 266-273-5 | CAS number: 66241-11-0 This substance is identified in the Colour Index by Colour Index Constitution Number, C.I. 53185.
Vapour pressure
Administrative data
- Endpoint:
- vapour pressure
- Type of information:
- calculation (if not (Q)SAR)
- Remarks:
- Migrated phrase: estimated by calculation
- Adequacy of study:
- key study
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- other: Using the boiling point of Leuco Sulfur Black 1 was determined by experimental study C30931, the vapor pressure can be calculated using Modified Watson Correlation
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 009
- Report date:
- 2009
Materials and methods
- Principles of method if other than guideline:
- If the vapor pressure of Leuco Sulfur Black 1 is expected to be so small that the value is below the measurement range of an experimental determination (e.g. the gas saturation method), then the vapor pressure can also be calculated, using the Modified Watson Correlation. This method is described by Lyman et al. (1990).
This method calculates the vapor pressure from the boiling point of the test item.
Test material
- Reference substance name:
- Automatically generated during migration to IUCLID 6, no data available
- IUPAC Name:
- Automatically generated during migration to IUCLID 6, no data available
- Details on test material:
- Identification: Leuco Sulfur Black 1
CAS No.: 66241-11-0
Description: Thixothrophic, black, wet paste
Batch Number: ESA0007595
Composition: Leuco Sulfur Black 1: 52.75% (calculated by amount of by-compounds)
2,4-Dinitrochlorobenzene: < 20 ppm
2,4-Dinitrophenol: < 20 ppm
Sulfate: 970 ppm
Chloride: 750 ppm
Sodium: 1.3% (w/w)
Water: 45.75% (w/w) by Karl-Fischer titration
Stability of the Test Item: Stable under storage conditions
Expiry date: July 11, 2011
Storage Conditions: At room temperature (range 20 +/- 5 °C), light protected
Constituent 1
Results and discussion
Vapour pressure
- Temp.:
- 25 °C
- Vapour pressure:
- < 0 Pa
Any other information on results incl. tables
The estimation of the vapor pressure of Leuco Sulfur Black 1 was based on the EEC directive 92/69, Part A, Methods for the determination of physico-chemical properties, A.4 “Vapour Pressure”, EEC Publication No. L383, December 1992 and the OECD Guideline No. 104, “Vapour Pressure”, adopted July 27, 1995.
Applicant's summary and conclusion
- Conclusions:
- The vapor pressure of Leuco Sulfur Blacl 1 is below
1.8 x 10 (-7) Pa at 25 ºC - Executive summary:
The boiling point of leuco Sulfur Black 1 was determined in study C30931. In this study the DSC showed an endothermic heat at 99.9 ºC. This temperature is not the true boilng point of the test item as it only reflects the boiling point of the water contained . The DSC shows no further endothermic heat effect up to 400ºC. Thus, the boiling point of the Leuco Sulfur Black 1 can be regarded as being above 400ºC
Based on this boiling point the vapor pressure of Leuco Sulfur Black 1 was calculated being below :
1.8 x 10 -7 Pa at 25 ºC
calcuted using Modified Watson Correlation
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