Fire extinguishing compositions, systems and methods
Disclosed are fire extinguishants comprising from about 20% to about 80% by weight of 1-chloro-3,3,3-trifluoropropene (HFO-1233zd) and from about 20% to about 80% by weight of 1,1,1,2,2,4,5,5,5-nonafluoro-4-(trifluoromethyl)-3-pentanone (FK5-1-12), and to methods, systems and containers which use the fire extinguishants.
1. A fire extinguishant comprising from about 40% to about 60% by weight of trans-1-chloro-3,3,3-trifluoropropene (transHFO-1233zd) and from about 40% to about 60% by weight of 1,1,1,2,2,4,5,5,5-nonafluoro-4-(trifluoromethyl)-3-pentanone (FK5-1-12), wherein the fire extinguishant has a Class A ISO 14520 MEC of about 6% or less and/or a Class B ISO 14520 MEC of about 6% or less.
2. The fire extinguishant of claim 1 wherein the fire extinguishant has a Class A ISO 14520 MEC of about 6% or less.
3. The fire extinguishant of claim 2 wherein the fire extinguishant has a Class A ISO 14520 MEC of 6.0% or less.
4. The fire extinguishant of claim 1 wherein the fire extinguishant has a Class B ISO 14520 MEC of about 6% or less.
5. The fire extinguishant of claim 4 wherein the fire extinguishant has Class A ISO 14520 MEC of 6.0% or less.
6. The fire extinguishant of claim 1 , wherein the HFO-1233zd and FKF-1-12 together comprise at least about 90% by weight of the fire extinguishant.
7. The fire extinguishant of claim 1 , wherein the fire extinguishant dose not comprise HFO-1233zd(Z).
8. The fire extinguishant of claim 7 wherein the HFO-1233zd and FKF-1-12 together comprise at least about 95% by weight of the fire extinguishant.
9. The fire extinguishant of claim 1 consisting of HFO-1233zd and FKF-1-12.
10. A fire extinguishant comprising about 50% by weight of trans-1-chloro-3,3,3-trifluoropropene (transHFO-1233zd) and about 50% by weight of 1,1,1,2,2,4,5,5,5-nonafluoro-4-(trifluoromethyl)-3-pentanone (FK5-1-12), wherein the fire extinguishant has a Class A ISO 14520 MEC of about 6% or less and a Class B ISO 14520 MEC of about 6% or less.
11. The fire extinguishant of claim 10 , wherein the fire extinguishant dose not comprise HFO-1233zd(Z).
12. A method of extinguishing a flame comprising:
(a) providing a fire extinguishant from about 40% to about 60% by weight of trans1-chloro-3,3,3-trifluoropropene (transHFO-1233zd) and from about 40% to about 60% by weight of 1,1,1,2,2,4,5,5,5-nonafluoro-4-(trifluoromethyl)-3-pentanone (FK5-1-12), wherein the fire extinguishant has a Class A ISO 14520 MEC of about 6% or less and a Class B ISO 14520 MEC of about 6% or less; and
(b) applying said fire extinguishant to the flame.
13. The method of claim 12 wherein said applying step comprises applying said fire extinguishant in an amount to produce a concentration in air of not greater than about 10 volume %.
14. The method of claim 12 wherein said applying step comprises applying said fire extinguishant in an amount to produce a concentration in air of not greater than about 8 volume %.
15. The method of claim 12 wherein said fire extinguishant has a boiling point of less than about 25° C.
16. The method of claim 12 wherein said applying comprises applying said fire extinguishant to an area having a temperature above about 80° F. and a relative humidity above about 70%.
17. The method of claim 12 wherein said fire extinguishant comprises about 50% by weight of trans-1-chloro-3,3,3-trifluoropropene (transHFO-1233zd) and about 50% by weight of 1,1,1,2,2,4,5,5,5-nonafluoro-4-(trifluoromethyl)-3-pentanone (FK5-1-12).
18. The method of claim 13 wherein said fire extinguishant comprises about 50% by weight of trans-1-chloro-3,3,3-trifluoropropene (transHFO-1233zd) and about 50% by weight of 1,1,1,2,2,4,5,5,5-nonafluoro-4-(trifluoromethyl)-3-pentanone (FK5-1-12).
19. The method of claim 14 wherein said fire extinguishant comprises about 50% by weight of trans-1-chloro-3,3,3-trifluoropropene (transHFO-1233zd) and about 50% by weight of 1,1,1,2,2,4,5,5,5-nonafluoro-4-(trifluoromethyl)-3-pentanone (FK5-1-12).
20. The method of claim 15 wherein said fire extinguishant comprises about 50% by weight of trans-1-chloro-3,3,3-trifluoropropene (transHFO-1233zd) and about 50% by weight of 1,1,1,2,2,4,5,5,5-nonafluoro-4-(trifluoromethyl)-3-pentanone (FK5-1-12).