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Castrol Techniclean AC 8629 Acidic process cleaner Description Castrol Techniclean™ AC 8629 is an aqueous, acidic industrial cleaner, containing highly effective biodegradable surfactants ａnd corrosion inhibitors. Application Techniclean AC 8629 is particularly designed for process cleaning operations of tungsten carbide goods, suitable for use in spray, dip ａnd ultrasonic applications. However, it is also well suited for use on steel ａnd aluminium surfaces. Techniclean AC 8629 effectively removes soluble oils, neat cutting oils, particles ａnd general dirt as well as oxides ａnd hard water scale from metal surfaces in industrial cleaning. Techniclean AC 8629 is recommended to be applied as a pre-wash cleaner in a multi-stage cleaning process, followed by an alkaline cleaning step and/or proper water rinsing stages in order to remove any acidic residues from the metals surface. Conditions of Use Optimum conditions of use are depending on the detailed application requirements ａnd the amount ａnd nature of the soil being removed. Advantages • Highly effective biodegradable surfactant package improves parts cleanliness ａnd reduces re-work. • Versatile, suitable for use in a wide range of applications • Non-abrasive removal of oxide films ａnd tarnish colours from steel ａnd hard metals improves parts quality Special corrosion inhibitors protect against corrosion ａnd oxidation during cleaning ａnd rinsing which minimises the scrap rate. • Typical Characteristics Page 1 / 2 21 January 2009, Version 1 Concentration Control 1. Pipette 20 ml bath solution in a 250 ml Erlenmeyer flask ａnd add 50 ml deionised water 2. Add 2 - 3 drops of indicator solution phenolphthalein 3. Titrate with KOH-solution (c = 1,4 %) until colour changes from colourless to pink 4. Calculation: Concentration in % = required ml KOH-solution * factor 1,0