| 摘要 |
PURPOSE:To obtain the subject composition, composed of pentafluorobutane, a solvent and a nonionic surfactant, having cleaning characteristics similar to those of R113 without affecting the ozonosphere and useful for electronic parts, etc., such as printed boards. CONSTITUTION:The objective composition is composed of (A) 1,1,1,2,2- pentafluorobutane, (B) preferably 0.1-50wt.% solvent such as >=5C alkanes soluble in the component (A) and (C) preferably 0.001-10wt.% nonionic surfactant such as an ether type nonionic surfactant. |
