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EC number: 407-950-9 | CAS number: 895-85-2 INTEROX-PMBP-70W; INTEROX-PMPB-70W
Density
Administrative data
Link to relevant study record(s)
- Endpoint:
- relative density
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- September 11-12, 1991
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- other: Well conducted GLP study, according to Eu and OECD guidelines, purity mentioned.
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.3 (Relative Density)
- Version / remarks:
- September 1984
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 109 (Density of Liquids and Solids)
- Version / remarks:
- May 12, 1981.
- Deviations:
- no
- GLP compliance:
- yes (incl. QA statement)
- Type of method:
- pycnometer method
- Type:
- relative density
- Density:
- 1.22
- Temp.:
- 20 °C
- Conclusions:
- The relative density of bis(4-methylbenzoyl)peroxide is 1.22 at 20°C.
- Executive summary:
The determination of the density (solid) was based on the EEC-Directive 84/449 EEC, A.3 "Relative density" (1984) and on the OECD Guideline no. 109 "Density of liquids and solids" (1981).
The relative density of bis(4-methylbenzoyl)peroxide D204= 1.22 at 20°C.
Reference
The density of DI-(4-METHYLBENZOYL)-PEROXID (INTEROX-PMBP) was determined using methanol as a suitable vehicle for topping up the 10 ml pycnometer.
The experiment was performed in duplicate. Individual results are shown in Table 1, see picture below.
Individual measurements and calculations are shown in Table 2 see picture below.
.
The density of the solid test substance
DI-(4-METHYLBENZOYL)-PEROXID (INTEROX-PMBP) was determined to be 1.22
g/cm3 (1.22*103 kg/m3).
Temperature of measurement was 20.0 ± 0.5°C.
D204= 1. 22 . CALCULATIONS
1. SMW (resulting from the test temperature) = 0.9982 g/cm3
2. Density liquid = y = c-x/ [(d-x)/SMW]
Exp. 1 : y = 0.7906 g/cm3
Exp. 2 : y = 0.7908 g/cm3
3. Density test substance = (a-x).y/«a-x)-b+c)
Exp. 1 : density = 1.2124 g/cm3
Exp. 2 : density = 1.2184 g/cm3
Mean density = 1.2154 g/cml
Relative density D204= 1.22
Description of key information
The relative density of bis(4-methylbenzoyl)peroxide is 1.22 at 20°C.
Key value for chemical safety assessment
- Relative density at 20C:
- 1.22
Additional information
The endpoint is supported by a calculation.
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