Registration Dossier

Administrative data

Endpoint:
explosiveness, other
Remarks:
Explosive characterics of vapor-gas mixture
Type of information:
experimental study
Adequacy of study:
supporting study
Study period:
2001
Reliability:
4 (not assignable)
Rationale for reliability incl. deficiencies:
secondary literature

Data source

Reference
Reference Type:
review article or handbook
Title:
Flammability of Vapor-Gas mixtures C2F4, SO3 and C2F4OSO3
Author:
Ya.A.Lisochkin and V.I.Poznyak
Year:
2001
Bibliographic source:
Fizika Goreniya i Vzryva, Vol 37, N° 5, pp.24-27, September-October, 2001

Materials and methods

Principles of method if other than guideline:
Mixture of C2F4, SO3 and C2F4OSO2 were prepared and tested in an autoclave. The mixture was ignited and the pressure in explosion of the mixture was measured by a fast-response induction gauge.
GLP compliance:
not specified

Test material

Reference
Name:
Unnamed
Type:
Constituent

Results and discussion

Any other information on results incl. tables

 Mixture  Initial pressure (MPa)   p max / po   dp/dt max (MPa /sec)
C2F4OSO2   0.3   3.8  2 
C2F4  0.3  5.7  13

Pure tetrafluoroethanesultone vapors turned out to be flammable and highly explosive; a regime of flame propagation was registered in initiation of their decomposition. The parameters of explosion of tetrafluoroethylene vapors are noticeably lower than those of C2F4.

Applicant's summary and conclusion

Interpretation of results:
other: Pure vapors of tetrafluoroethanesultone are highly explosive
Conclusions:
In the process of obtaining tetrafluoroethanesultone, both the initial and the final products are highly explosive.
The pure vapors of tetrafluoroethanesultone are highly explosive, the possibility of decomposition of the liquid product without access of any oxidizer in the deflagration regime cannot be excluded. Deflagration of the liquid phase is particularly hazardous for storage and use of such products.
Executive summary:

The flammability of the initial and the final product of the process to obtained tetrafluoroethansultone were studied in autoclave. Mixture of C2F4, SO3and/or tetrafluoroethanesultone were made and ignited in this autoclave.

In the process of obtaining tetrafluoroethanesultone, both the initial and the final products are highly explosive.

After ignition, the pure vapors of tetrafluoroethanesultone are highly explosive. The possibility of decomposition of the liquid product without access of any oxidizer in the deflagration regime cannot be excluded. Deflagration of the liquid phase is particularly hazardous for storage and use of such products