... 3.PH : 13 Potassium silicate liquid &mortar water repellent CAS No.:31795-24-1 HS-004 water repellent in constructions ,stones,marble,concrete ... ,and the petroleum additives,etc Product NameSodium Methyl SiliconateCAS No.:31795-24-1 Technological Indices1.Appearance :Colorless transparent liquid 2.Content %: > ... day : in 7 days Potassium silicate liquid &mortar water repellent CAS No.:31795-24-1 HS-004