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Product Name : Borax Powder (For PQF Shell Deoxidation) Composition:Anhydrous Sodium Tethraborate (Na2B4O7) == 30 ~ 35%Sodium and potassium soaps == 10 ~ 15%The content in fatty acids must not be lower than the 80% of the minimum required percentage of soap.Sodium sulfate (Na2SO4) == 20 ~ 25%A part (maximum 10%) of the Na2SO4 may be substituted by sodium tripoliphosphate (Na5P3O10)Rest: humidity and/or crystallisation waterShape and size of the granules:It must be under the form of a powder, with the components well mixed together.90% of the power must be able to be sifted through a 16-mesh sieve anhydrous Borax Powder anhydrous Borax Powder, core board,