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VANSIL® W-40 Wollastonite
- CAS Number
- 13983-17-0
- EC Number
- 237-772-5
- Chemical Name
- Calcium Metasilicate, Pumice
VANSIL® W-40 Wollastonite is a fine particle (5 Hegman fineness) low aspect ratio grade of wollastonite that can be used as a general-purpose mineral filler in a wide range of paint and coatings. It is used as a TiO2 spacer and extender. 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
- Powder
- Solid
Identification
- CASE Ingredients Features
- Blocking ResistanceChemical ResistanceCorrosion ResistanceExcellent WeatherabilityGood WettabilityIn-Can Stability
- CASE Ingredients Functions
- ExtenderFillerRheology Modifier
Product families
CASE Ingredients — Additives
- Fillers & Extenders
- Rheology Modifiers & Stabilizers
Industrial Additives & Materials — Construction Chemicals
- Mortar & Gypsum Additives
Other characteristics
- Brand
- VANSIL
- Functions
- Extender, Filler, Rheology Modifier
- Usage
Functional filler in adhesives, abrasives, ceramics, elastomers, insulating materials, paint, plastics, resins, sealants, and wallboards.
- Coating Type
- E-Coat & Electrodeposition
- Latex
- 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
- Chemical Inventories
- AICS (Australia)
- DSL (Canada)
- EINECS (EU)
- ENCS (Japan)
- IECSC (China)
- ISHL (Japan)
- KECI (Korea)
- NZIoC (New Zealand)
- Industrial Additives Functions
- Filler
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. 0.06 | % | T-944 |
| Heat Loss | max. 0.5 | % | T-952 |
| Hegman Fineness | min. 4.5 | — | 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) | 31.0 | — | ASTM D 281 |
| Particle Size Distribution (Horiba LA-300, D10) | 1.5 | — | — |
| Particle Size Distribution (Horiba LA-300, D50) | 6.6 | — | — |
| Particle Size Distribution (Horiba LA-300, D90) | 15.7 | — | — |
| Particle Size Distribution (Horiba LA-300, D95) | 19.0 | — | — |
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 | % |
