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EC number: 205-094-9 | CAS number: 133-14-2
Vapour pressure
Administrative data
Link to relevant study record(s)
- Endpoint:
- vapour pressure
- Type of information:
- calculation (if not (Q)SAR)
- Remarks:
- estimated by calculation
- Adequacy of study:
- weight of evidence
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- results derived from a valid (Q)SAR model and falling into its applicability domain, with limited documentation / justification
- Qualifier:
- no guideline required
- Principles of method if other than guideline:
- Software V11.02
- GLP compliance:
- no
- Type of method:
- other: calculation
- Temp.:
- 25 °C
- Vapour pressure:
- 0 Torr
- Temp.:
- 25 °C
- Vapour pressure:
- 0 Pa
- Remarks on result:
- other: calculated from 0.000000012 Torr
- Conclusions:
- The calculated vapour pressure (ACD labs) of the pure Bis(2,4-dichlorobenzoyl) peroxide is 0.0000016 Pa at 25 °C.
- Executive summary:
The calculated vapour pressure (ACD labs) of the pure Bis(2,4-dichlorobenzoyl) peroxide is 0.0000016 Pa at 25 °C.
- Endpoint:
- vapour pressure
- Type of information:
- calculation (if not (Q)SAR)
- Remarks:
- estimated by calculation
- Adequacy of study:
- supporting study
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- results derived from a valid (Q)SAR model and falling into its applicability domain, with limited documentation / justification
- Principles of method if other than guideline:
- calculation
- Type of method:
- other: calculation
- Temp.:
- 25 °C
- Vapour pressure:
- 0 Pa
- Remarks on result:
- other: Mean VP of Antoine & Grain methods
- Conclusions:
- The calculated vapour pressure (EpiSuite) of the pure Bis(2,4-dichlorobenzoyl) peroxide is 0.000141 Pa at 25 °C.
- Executive summary:
The calculated vapour pressure (EpiSuite) of the pure Bis(2,4-dichlorobenzoyl) peroxide is 0.000141 Pa at 25 °C.
- Endpoint:
- vapour pressure
- Type of information:
- experimental study
- Adequacy of study:
- supporting study
- Study period:
- May 2011
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- other: see 'Remark'
- Remarks:
- Experimental determination is difficult, because the substance is hazardous (explosive, unstable) in its pure state. Therefore, calculations (EpiSuite and ACD labs) are supported by read across with a similar substance, dibenzoylperoxide (CAS# 94-36-0).
- Justification for type of information:
- See "Any other information on materials and methods" below
- Qualifier:
- no guideline followed
- Principles of method if other than guideline:
- calculation
- GLP compliance:
- no
- Type of method:
- other: calculation
- Temp.:
- 25 °C
- Vapour pressure:
- < 0.009 Pa
- Conclusions:
- The vapour pressure of bis(2,4-dichlorobenzoyl) peroxide is < 0.009 Pa at 25°C.
- Executive summary:
The vapour pressure of bis(2,4-dichlorobenzoyl) peroxide (CAS# 133-14-2) is determined by read across with dibenzoylperoxide (CAS# 94-36-0) and this is supported by calculation with EPISUITE. The worst case vapour pressure of bis(2,4-dichlorobenzoyl) peroxide is < 0.009 Pa at 25°C.
Referenceopen allclose all
Discussion
Based on read across with dibenzoylperoxide it can be concluded that the vapour pressure of bis(2,4-dichlorobenzoyl) peroxide is < 0.009 Pa at 25°C as worst case. This conclusion is supported by the EPISUITE calculation for this substance which resulted in a value of 0.000141 Pa at 25°C.
Description of key information
The worst case vapour pressure of bis(2,4-dichlorobenzoyl) peroxide is < 0.009 Pa at 25°C (read across from 94-36-0). Calculated vapour pressures are 0.0000016 Pa at 25 oC (ACD labs) and 0.000141 Pa at 25 oC (EpiSuite)..
Key value for chemical safety assessment
- Vapour pressure:
- 0.009 Pa
- at the temperature of:
- 25 °C
Additional information
Based on read across with dibenzoylperoxide it can be concluded that the worst case vapour pressure of bis(2,4-dichlorobenzoyl) peroxide is < 0.009 Pa at 25°C. This conclusion as worst case is supported by the EPISUITE calculation for this substance which resulted in a value of 0.000141 Pa at 25°C
and the ACD labs calculated vapour pressure of 0.0000016 Pa at 25°C by ACD labs.
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