Product description SILRES® BS 1340 is a nonionic, solvent-free, waterdilutable emulsion of a reactive polysiloxane. Application SILRES® BS 1340 is used in undiluted form as a  hydrophobizing additive for aqueous masonry paints or  plasters to increase water repellency, water resistance  and water vapour permeability as well as to enhance  processability and anti-blocking properties. Suitable for: - silicone resin emulsion paints and  silicone resin emulsion plasters - silicate emulsion paints and plasters - highly-filled emulsion-based coatings - emulsion-modified whitewash - stoppers Paints and plasters modified SILRES® BS 1340 are  characterized by an excellent water beading effect. Processing SILRES® BS 1340 can be added in undiluted form to  aqueous masonry paints or plasters during or after  their production. The addition of 1 to 3 wt.-% is  recommended. Storage The 'Best use before end' date of each batch is shown  on the product label. Storage beyond the date specified on the label does  not necessarily mean that the product is no longer  usable. In this case however, the properties required  for the intended use must be checked for quality  assurance reasons. Safety notes Comprehensive instructions are given in the  corresponding Material Safety Data Sheets. They are  available on request from WACKER subsidiaries or  may be printed via WACKER web site   Product data Typical general characteristics Inspection Method Value Appearance milky, white  Solids content approx. 50 wt. % pH-Value at 25 °C Indicator strips 8 - 9 These figures are only intended as a guide and should not be used in preparing specifications.