HCFC-225 is a mixture of two isomers, HCFC-225ca and HCFC-225cb. A common source of HCFC-225 is from Asahi Glass Company as Asahiklin AK-225, a precision cleaning solvent. AK-225 has many unique properties, including good solvency, and thermal stability. AK-225 is nonflammable. AK-225 is VOC exempt, per the EPA. VOCs are smog producing compounds that are highly regulated. AK-225 also has a low acute toxicity (the exposure level of AK-225 is 100 ppm 8h TWA), low viscosity, high density, and low surface tension. Due to the ozone depleting potentials of HCFC-225ca and HCFC-225cb, 0.02 and 0.03, respectively, it is now being phased out.
- No volatile residue (NVR)
- Rapid evaporation
- Solvent stability, eliminate need for stabilizers (examples: NPB, TCE)
- Exposure limits 100 PPM compared to TCE 100 PPM and NPB 10 with 0.1 PPM pending *
- Reclamation, recycling easily handled with simple distillation equipment with no decomposition and/or if you have a 2 sump vapor-degreaser
- NO LONGER AVAILABLE 12/31/14
To date, the EPA has approved more than 300 substitutes for over 60 different uses. Potential substitutes for HCFC-225 include 3M HFEs, DuPont™ Vertrel® Solvents, and FluoSolv® Performance Fluids.
- Vapor degreasing
- Defluxing of PCB’s and hybrid circuits
- Contact cleaning for energized circuits
- Dissolve fluorinated lubricants, i.e. DuPont™ Krytox® Greases
- Carrier fluid for low temp drilling fluid
- Electrical sleeve testing
- Cleanliness verification
For More Information: Brandon Pelissero