Cleaning composition based on 1,1,1,2,2-pentafluoro-3,3-dichloro-propane, and methyl ter butyl ether.

摘要

In order to replace the cleaning compositions based on 1,1,2-trichloro-1,2,2-trifluoroethane (F113), the invention proposes a composition comprising 55 to 80% by weight of 1,1,1,2,2-pentafluoro- 3,3-dichloropropane (225 ca) and 45 to 20 % by weight of methyl tert-butyl ether. These two compounds form a negative azeotrope (b.p. = 59.9 DEG C at standard pressure).
<??>The composition, optionally stabilised, can be used for the cleaning of solid surfaces, in particular for the defluxing of printed circuits and for the degreasing of mechanical components.