SYLYSIA® 550
Fuji Silysia Chemical USA Ltd. · SYLYSIA®
SYLYSIA® 550 is a 3.9 µm average particle size, non-treated, amorphous silica powder used for matting, anti-blocking, and thickening across a variety of coatings and adhesive formulations. As part of the SYLYSIA 500 series, it is distinguished by its high density, high porosity, and low bulk density, which support effective gloss reduction and viscosity stabilization. SYLYSIA® 550 is widely used in paints, inks, plastic films, and sealing components where sedimentation control and adhesion enhancement are essential.
- High porosity
- High chemical purity
- Compatible with multiple substrates
- Effective matting agent
- Enhanced surface properties
- Excellent adhesion
- Excellent pigment suspension
- Free flowing
- High thickening efficiency
- Stable dispersion
Specifications
Identifiers
- Chemical name
- Silicon Dioxide
- CAS number(s)
- 7631-86-9
- EC number
- 231-545-4
- Molecular formula
- SiO2
- InChI key
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N
- INCI name
- Silica
- Synonyms
- Silica, Amorphous, Silicic Acid, Amorphous Silicon Dioxide, Micronized Silica Gel
Technical specifications
Properties
| Property | Value | Unit |
|---|---|---|
| Appearance | Dry, white powder | - |
| Odor | Odorless | - |
| Solubility | Insoluble in water | - |
| Specific Gravity as SiO2 | 2.2 | - |
| pH | 2.5 - 8.3 | - |
| Boiling Point as SiO2 | 2230 | °C |
| Melting Point as SiO2 | 1610 | °C |
| Form | Amorphous, non-crystalline silica | - |
Specifications
| Test Condition | Specification | Value | Unit | Test Method |
|---|---|---|---|---|
| - | Whiteness | 92 (min.) | % | - |
| - | Pore Volume | 0.8 | mL/g | - |
| - | BET Surface Area | 500 | m²/g | - |
| at 5% slurry | pH | 7 | - | - |
| - | Total Volatile | 7 | % | - |
| - | Oil Absorption | 160 | mL/100g | - |
| - | Loose Bulk Density | 30 | ml/5g | - |
| - | Average Particle Size | 3.9 | µm | SALD 2300 Shimadzu Laser Method |
| - | Surface Treatment | None | - | - |
| - | Appearance | White, dry powder | - | - |
- Industries
- Adhesives & SealantsChemical ManufacturingPackaging & PrintingPaints & CoatingsPersonal CarePharmaceuticalsPlastics & Rubber
- Product groups
- SilicasAmorphous SilicaSilica Gel
- Applications
- AdhesivesPersonal care productsPharmaceutical excipientsPlastic manufacturingPowder coatingsPrinting inksRubber & plastic productsSolvent-based coatingsWater-based coatings
- Functions
- Adhesion promoterAnti-blocking agentAnti-caking agentDispersantFlow modifierFragrance carrierMatting agentThickener
- Market segments
- AdhesivesCoatingsPersonal care productsPharmaceutical manufacturingPlasticsPrinting inks & coatingsSpecialty chemicals
Documents
- Request a copy
Technical Data Sheet (TDS)
Specifications & performance data
- Request a copy
Safety Data Sheet (SDS)
Safety information & handling