Silicon oxide- Fumed Silica
EINECS No.:215-683-2
1.Characteristic: It is a white and colloidal micro-particle with its primary micro-particle from 5-40 nm and has obvious properties such as thixotropy, reinforcing, thickening and filling etc. and is insoluble in all kinds of solvents and liquids except hydrofluoric acid and concentrated bases.
2.Specification: Q/SHG19-2008
Parameter | Grade | |||
ITEM | A-150 | A-200 | A-300 | A-380 |
Mass Fraction of SiO2% | ≥99.8 | ≥99.8 | ≥99.8 | ≥99.8 |
Loss on ignition,% | ≤2.5 | ≤2.5 | ≤2.5 | ≤2.5 |
Suspensions pH | 3.6~4.8 | 3.6~4.8 | 3.6~4.8 | 3.6~4.8 |
Specific Surface Area(m2/g) | 126~175 | 176~225 | 276~335 | 336~405 |
3.Uses: It is used widely in silicon rubber, construction sealant, coating, electron and electric, aerospace, medicine and medical material, resin processing, printing ink, pesticide and other industries.
A-150: used widely in silicone acid rubber, sulfurized silicone rubber in ambient temperature (low water content), silicone neutral rubber.
A-200: used widely in sealing ring, sealing gasket, petroleum pipeline, insulator, tablet powdered preparation, artificial viscera, infusion tube, latex nipple and high quality oil ink.
A-300: used widely in resin thickener, thickness agent for synthetic lubricating ester, resin thixotropic agent for electronic component.
A-380: used widely in reinforcing agent for silicone rubber, medical silicone rubber for transparent artificial organs and artificial heart etc.
4.Packing: packed with multi-layer paper plastic compound bag with net weight of 5 kg or 10 kg, or packed by whole plastic seal for users having special demand on water content.
5.Store and transport: placed in vent and dry storehouse and prevented from humid, water, pressure and throwing during transport.