3M Novec 71DA engineered fluid is an azeotropic precision cleaning solvent formulated from hydrofluoroether (HFE), trans-1,2-dichloroethylene (t-DCE) and a small amount of ethanol, designed for medium- to heavy-duty cleaning of metallic parts and flux residue.
With a boiling point of 40 °C and a liquid density of 1.33 g/cm³ at 25 °C, 3M Novec 71DA engineered fluid is a true azeotropic blend whose vapor and liquid compositions remain constant at the boiling point, keeping its properties stable over long-term use in vapor degreasers and ultrasonic cleaning equipment.
3M Novec 71DA engineered fluid has a Kauri-Butanol (KB) value of 33, offering moderate solvency to effectively remove rosin flux residue, oils, greases and waxes; its low surface tension (16.4 dynes/cm) allows penetration into tight gaps with fast drying and no residue, while the ethanol component enhances removal of ionic contaminants.
3M Novec 71DA engineered fluid is compatible with most metals such as aluminum, copper, carbon steel, stainless steel, titanium and tantalum, as well as solvent-resistant plastics and elastomers. It is widely used in production cleaning for microelectronics, precision metal parts, precision optics, medical devices and aerospace parts.
3M Novec 71DA engineered fluid is a medium-duty azeotropic cleaning fluid that replaces HCFC-225 (AK-225), certain HFC and chlorinated solvents, and n-propyl bromide (nPB), delivering balanced solvency, ionic contaminant removal and a better safety and environmental profile to meet the cleaning quality and environmental compliance needs of precision electronics and metal parts.
