VANSIL® W-50 Wollastonite
- CAS Number
- 13983-17-0
- EC Number
- 237-772-5
- Chemical Name
- Calcium Metasilicate, Pumice
VANSIL® W-50 Wollastonite is the finest of the low aspect ratio grades of VANSIL (6+ Hegman fineness). This grade is suitable for liquid industrial and corrosion resistant coatings, powder coatings and semi-gloss architectural coatings. In powder coatings, this grade is desirable for smoother films and improved gloss. The naturally high pH of wollastonite helps to buffer latex paints and coatings, which contributes to improved corrosion resistance and weathering. This also extends in-can stability and prolongs the lifetime of the coating.
Properties
- Physical Form
- Powder
- Solid
Identification
- CASE Ingredients Features
- Alkali ResistanceCorrosion ResistanceExcellent WeatherabilityGood Color StabilityHigh GlossImproved Edge CoverageIn-Can Stability
- CASE Ingredients Functions
- ExtenderSlip Control Agent
Product families
Applications
- Architectural Coatings
- Architectural Coatings
Product Families
- Fillers & Extenders
- Surface Modifiers
- Mortar & Gypsum Additives
Other characteristics
- Brand
- VANSIL
- Features
Alkali Resistance, Corrosion Resistance, Excellent Weatherability, Good Color Stability, High Gloss, Improved Edge Coverage, In-Can Stability
- Functions
- Extender, Filler, Lubricant, Slip Control Agent
- Usage
Functional filler in adhesives, abrasives, ceramics, elastomers, insulating materials, paint, plastics, resins, sealants, and wallboards.
- Markets
- Building & Construction
- Paints & Coatings
- Coating Type
- Latex
- Powder Coating
- Primer
- Varnishes
- Storage Note
Due to the agglomeration of VANSIL W during prolonged storage, more than 6 months inventory is not recommended.
- Technology
- CASE Ingredients
- Industrial Additives & Materials
- Background
VANSIL W-50 disperses to 6 to 7 Hegman fineness at three pounds per gallon. This grade is suitable for liquid industrial and corrosion resistant coatings, powder coatings and semi-gloss architectural coatings. In powder coatings, this grade is desirable for smoother films and improved gloss.
- Chemical Inventories
- AICS (Australia)
- DSL (Canada)
- ELINCS (EU)
- ENCS (Japan)
- IECSC (China)
- ISHL (Japan)
- KECI (Korea)
- MITI Listed (Japan)
- Industrial Additives Functions
- Filler
- Lubricant
Technical data
Table 1 of 2
12 rows| Characteristic | Value | Unit | Method |
|---|---|---|---|
| Dry Brightness (Photovolt) | min. 85 | — | T-954 |
| Fineness (Retained on 325 mesh) | max. 0.05 | % | T-944 |
| Heat Loss | max. 0.5 | % | T-952 |
| Hegman Fineness | min. 5.5 | — | T-1042 |
| Density | 2.9 | g/cc | — |
| Weight | 24.2 | lbs./gal | — |
| pH Value (10% SIurry) | 10 - 11 | — | ASTM D 1208 |
| Oil Absorption (Rub Out) | 33.0 | — | ASTM D 281 |
| Particle Size Distribution (Horiba LA-300, D10) | 1.3 | — | — |
| Particle Size Distribution (Horiba LA-300, D50) | 4.5 | — | — |
| Particle Size Distribution (Horiba LA-300, D90) | 11.5 | — | — |
| Particle Size Distribution (Horiba LA-300, D95) | 14.3 | — | — |
Table 2 of 2
8 rows| Characteristic | Value | Unit |
|---|---|---|
| Calcium Oxide | 44.9 | % |
| Silicon Dioxide | 51.3 | % |
| Aluminum Oxide | 0.9 | % |
| Magnesium Oxide | 1.6 | % |
| Iron Oxide | max. 0.2 | % |
| Sodium Oxide | max. 0.1 | % |
| Manganese Oxide | max. 0.1 | % |
| Ignition Loss (1000°C) | 1.1 | % |
