5768 5768 Bio-Kleen Bio-Kleen For Water Removal of Rosin Flux Residue For Water Removal of Rosin Flux Residue Product Description Physical Properties Kester 5768 Bio-Kleen is a highly concentrated Specific Gravity: 0.998 0.005 Antoine Paar DMA 35 25C liquid cleaner which is added to water to make a non-foaming solution for removing rosin flux pH (10% solution): 11.4 residue. The alkaline chemicals in Kester 5768 Hanna Instruments 8314 25C react with rosin by a chemical conversion known as saponification to form soaps which are Amine Value: 284 15 mgKOH/g water-soluble. The resulting rosin soap and any ASTM D-2076 water-soluble residue, such as activator salts, can Flash Point: 110C (230F) then be rinsed away with water. Kester 5768 possesses enhanced ability to solubilize unsaponifiable material that is normally present in Application Notes rosin and in additives used in some flux or solderpaste formulations. This assures excellent Kester 5768 Bio-Kleen is specifically designed for visual and ionic cleanliness of circuit boards after use in automatic in-line spray cleaning equipment cleaning. A significant feature of this formulation is but can also be used in batch type washers. its stable composition during use at elevated Excellent cleaning is accomplished with low foaming temperatures such that a greatly increased and minimal odor. This product contains a very operating life is achieved. This results in less effective organic anti-foaming agent. No silicone frequent discharge of the wash tank for defoamers or other oils which do not rinse replacement with fresh solution and in a process completely from a circuit board assembly are cost reduction. Another special feature of Kester present in the formulation. For typical applications 5768 is that unlike other saponifier products which a 5-10% by volume solution of Kester 5768 is tend to mildly etch the solder surface, it leaves required. A higher or lower concentration may be joints bright and shiny after cleaning. Kester 5768 used depending on specific production eliminates the need for expensive, toxic and requirements. How much Kester 5768 will be environmentally harmful solvents traditionally used depends on the specific flux or solderpaste used for flux removal. formulation, the solids content of the rosin flux, the solution temperature and efficiency of the cleaning Performance Characteristics: equipment. The detergency action of Kester 5768 Enhanced ability to solubilize flux residues allows its use to assist in the removal of organic Easily cleaned in water water-soluble fluxes when increased cleaning Effective for both rosin and water-soluble efficiency or lower surface tension are desired. flux chemistries Kester 5768 is not compatible with PVC or CPVC. As a general guideline, the following table shows the recommended temperature range and concentration of Kester 5768. 5768 Concentration Temperature Application (% by volume) In-line Cleaner: 8-12 49-71C (120-160F) Solderpaste Liquid Rosin Flux 5-10 49-71C (120-160F) Organic Water-soluble Flux 1-2 49-71C (120-160F) Batch Cleaner: Solderpaste and Liquid Flux 4-5 43-65C (110-150F) Organic Water-soluble Flux 1-2 43-65C (110-150F) Cleaning: Deionized water is recommended for the wash solution and rinse tank section of in-line spray cleaning equipment. Use of hard or high mineral content tap water will reduce cleaning efficiency and cause scale build up in the cleaning equipment. There will also be increased consumption of Kester 5768 because the saponifier will react with the minerals in hard tap water. Disposal: Kester 5768 does not contain phosphates, dichromates, caustic soda, inorganic salts, terpenes or halogenated hydrocarbon solvents. The spent cleaning solution is biodegradable. However, the water may contain some lead. Local regulations should be consulted for limitations on such factor as pH, solids content, COD level and metals percentage. Storage and Shelf Life: Shelf life is 2 years from date of manufacture when handled properly and held at 10-25C (50-77F). Health & Safety: This product, during handling or use, may be hazardous to health or the environment. Read the Material Safety Data Sheet and warning label before using this product. World Headquarters: 800 West Thorndale Avenue, Itasca, Illinois, 60143 USA Phone: (+1) 847-297-1600 Email: customerservice kester.com Website: www.kester.com Asia Pacific Headquarters European Headquarters Japanese Headquarters 500 Chai Chee Lane Zum Plom 5 20-11 Yokokawa 2-Chome Singapore 469024 08541 Neuensalz Sumida-Ku (+65) 6449-1133 Germany Tokyo 130-0003 Japan customerservice kester.com.sg (+49) 3741 4233-0 (+81) 3-3624-5351 customerservice kester-eu.com jpsales kester.com.sg The data recommendations presented are based on tests, which we consider reliable. Because Kester has no control over the conditions of use, we disclaim any responsibility connected with the use of any of our products or the information presented. We advise that all chemical products be used only by or under the direction of technically qualified personnel who are aware of the poten- tial hazards involved and the necessity for reasonable care in their handling. The technical information contained herein is consistent with the properties of this material but should not be used in the preparation of specifications as it is intended for reference only. For assistance in preparing specifications, please contact your local Kester office for details. Rev: 15Jun07