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EC number: 203-326-3 | CAS number: 105-74-8
Stability in organic solvents and identity of relevant degradation products
Administrative data
Link to relevant study record(s)
- Endpoint:
- stability in organic solvents and identity of relevant degradation products
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 2010
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- other: well conducted study, using Differential Scanning Calorimetry(DSC) , purity included.
- Qualifier:
- no guideline available
- Principles of method if other than guideline:
- Thermal analysis Differential Scanning Calorimetry(DSC)
- GLP compliance:
- no
- Other quality assurance:
- other: ISO 9001
- Test substance stable:
- yes
- Remarks:
- overall stability is dependent on solvent: heptane, chloroform and acetone tested
- Transformation products:
- not measured
- Conclusions:
- Thermal stability of Dilauroyl peroxide expressed as the time to reach a conversion of 1% at 20°C is:
5.7 days for Dilauroyl peroxide dissolved in heptane
2.9 days for Dilauroyl peroxide dissolved in chlororform
1.6 days for Dilauroyl peroxide dissolved in acetone - Executive summary:
The study was conducted to determine the stability of the substance in various solvents by Thermal analysis Differential Scanning Calorimetry(DSC) to assist with other toxicology and ecotoxicology studies.
Thermal stability expressed as the time to reach a conversion of 1% at 20°C is: 5.7 days for Dilauroyl peroxide dissolved in heptane 2.9 days for Dilauroyl peroxide dissolved in chlororform 1.6 days for Dilauroyl peroxide dissolved in acetone
Reference
Overview of Setaram and TAM tests on Laurox.
Solvent |
concentration |
apparatus |
mode |
T |
Q |
1000/T |
ln Q |
ΔH |
file |
|
(% w/w) |
|
|
(°C) |
(W/kg) |
(T in K) |
|
(J/kg) |
U:Nuk091 |
|
|
|
|
|
|
|
|
|
|
Heptane PA |
9.75 |
Set. C80 |
scan |
80.0 |
7.426 |
2.831 |
2.005 |
76100 |
32 |
|
9.75 |
Set. C80 |
scan |
65 |
1.22 |
2.957 |
0.199 |
76100 |
32 |
|
10.02 |
Set. C80 |
iso |
54.3 |
0.43 |
3.054 |
-0.844 |
|
40 |
|
9.96 |
TAM |
iso |
25 |
0.0032 |
3.354 |
-5.745 |
|
35 |
|
|
|
|
|
|
|
|
|
|
Chloroform PA |
9.88 |
Set. C80 |
scan |
80.1 |
18.14 |
2.831 |
2.898 |
83800 |
36 |
|
9.88 |
Set. C80 |
scan |
65 |
2.75 |
2.957 |
1.012 |
83800 |
36 |
|
9.92 |
Set. C80 |
iso |
54.3 |
1.27 |
3.054 |
0.239 |
|
37 |
|
9.73 |
TAM |
iso |
25 |
0.0066 |
3.354 |
-5.021 |
|
39 |
|
|
|
|
|
|
|
|
|
|
Acetone PA |
5.02 |
Set. C80 |
scan |
80 |
11 |
2.832 |
2.398 |
40800 |
42 |
|
5.02 |
Set. C80 |
scan |
65 |
1.76 |
2.957 |
0.565 |
40800 |
42 |
|
5.02 |
TAM |
iso |
25 |
0.0065 |
3.354 |
-5.036 |
|
41 |
Overview of kinetic results
Solvent |
Concentration (w/w) |
Ea (kJ/Mole) |
Ln C |
k0 (1/s) |
Temp. range (°C) |
Heptane Chloroform Acetone |
10 10 5 |
123.47 125.87 118.10 |
44.18 45.94 42.60 |
2.03*1014 1.07*1015 7.75*1013 |
25 – 80 25 - 80 25 - 80 |
Description of key information
Thermal stability of Dilauroyl peroxide expressed as the time to reach a conversion of 1% at 20°C is:
5.7 days for Dilauroyl peroxide dissolved in heptane
2.9 days for Dilauroyl peroxide dissolved in chlororform
1.6 days for Dilauroyl peroxide dissolved in acetone
Additional information
The study was conducted to determine the stability of the substance in various solvents by Thermal analysis Differential Scanning Calorimetry(DSC) to assist with other toxicology and ecotoxicology studies.
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