PRODUCT NAME: COLLOIDAL SILICA Other name: SILICA SOL MODEL: JN-30 Color: Clear CAS NO. : 112926-00-8 TDS Specification: SIO2, %: 20-40% NA2O, %: 0.40 , PH: 9.0~10.5 Viscosity : 4.3-5.5 cp ; SP.GR: 1.19~1.21, 1.29~1.31 Particle Size: 8~15 nm Application for investment casting, lost wax casting, refractory, water paint, concrete polishing..