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Physical & Chemical properties

Flash point

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Reference
Endpoint:
flash point of flammable liquids
Type of information:
experimental study
Adequacy of study:
key study
Study period:
June 21 – 22, 2011
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
other: Well conducted study, under Internal management system, according to EU and ISO guidelines, certificate of analysis included.
Qualifier:
according to
Guideline:
EU Method A.9 (Flash-Point)
Version / remarks:
May 31, 2008
Deviations:
no
Qualifier:
according to
Guideline:
ISO 3679 (Determination of flash point - Rapid equilibrium closed cup method)
Version / remarks:
2004. Remark: April 2004
Deviations:
no
GLP compliance:
no
Remarks:
Internal management system
Type of method:
equilibrium method closed cup
Flash point:
68 °C
Atm. press.:
101 kPa

Calibration    

-   Observed flashpoint :63°C

-    Barometric pressure :101.0 kPa

-   Corrected flash point :63°C

The measured value of 63°C for undecane is within the acceptance limits.

 

The estimated accuracy of the manometer is ± 0.1 kPa.

 

Flash point of test substance

-   Observed flashpoint :68°C

-    Barometric pressure :101.0 kPa

-   Corrected flash point :68°C

This means that the flash point of the test substance is 68°C

 

Conclusions:
The flash point of Di-tert-butyl 1,1,4,4-tetramethyltetramethylene diperoxide is 68°C.
Executive summary:

The flash point of Di-tert-butyl 1,1,4,4-tetramethyltetramethylene diperoxidewas determined according toEC Regulation No 440/2008, Guideline A.9, and according to ISO 3679 and in accordance with European Chemicals Agency (ECHA), Guidance on information requirements and chemical safety assessment, Chapter R.7a, Endpoint specific guidance, May 2008.

 

The flash point of the test substance is 68°C.

Description of key information

The flash point of Di-tert-butyl 1,1,4,4-tetramethyltetramethylene diperoxide is 68°C.

Key value for chemical safety assessment

Flash point at 101 325 Pa:
68 °C

Additional information

Batch number 1002516115 is the current (2011) commercial product, so this flashpoint is chosen to be the key study.

The flash point of the product is strongly influenced by the amount of the impurity di-tert-butylperoxide.

Flash points in the range of 30 to > 85°C are reported, depending on the amount of di-ter-butylperoxide.

The flash point according to the MSDS is 56°C.

The flash point of the purified substance(content 99.3 to 99.4 %) is above 85°C, caused by material escaping from the self-accerelating decomposition.

The SADT(Self-Accerelating Decomposition Temperature) of the sample is 80°C

The flash point of products from 2008 and 2009 is 71- 77 °C.

At a concentration of 0.3 % Di tert. butylperoxide the flash point is 77°C.

At a concentration of 0.6 % Di tert. butylperoxide the flash point is 71°C.

Average value of the impurity di-tert-butylperoxide from 1-Januari-2009 till 30-Juni-2011: 0.53 %.