Knowde Enhanced TDS
Identification & Functionality
- Chemical Family
- Chemical Name
- CASE Ingredients Functions
- CAS No.
- 37244-96-5
- EC No.
- 609-369-8
- Technologies
- Product Families
Features & Benefits
- CASE Ingredients Features
- Product Highlights
- Nepheline Syenite is a naturally occurring, silica-free, anhydrous sodium-potassium alumina silicate, that delivers improved product performance and is accordant with modern environmental and industrial hygiene standards.
- Nepheline syenites a composed of three primary minerals: the albite form (sodium) of feldspar, the microcline form (potassium) of feld,spar and nepheline (feldspathoid).
- The existence of nepheline and the absence of crystalline silica is what sets this uniquely occurring rock apart from feldspar fillers, which contain just albite and microcline.
- Like feldspar, it provides alkalis that act as a flux in the manufacture of glass and ceramics. In glass production, alumina acts as a matrix of stabilizer, enhancing the workability of molten glass, and increasing the resistance for scratching, breaking and chemical protection.
- These oxides primarily exist in nepheline and alkaline feldspar, and there is no free crystalline silica present in APNS.
- Product Benefits
In filler applications, nepheline syenite primarily serves as a performance enhancer and has the following functions/advantages:
- Improves weatherability
- Improves abrasion, scrub, stain, mildew and chalking resistance
- High brightness (> 92)
- Great UV protection to resin and pigment system, and high yellowing resistance
- Low tint strength even at high loading that maximizes the color strength
- Optimal refractive index allows for high loading in transparent and translucent coatings and stains
- Good dispersibility and low oil absorption in both water and solvent systems, and low viscosity even in high filler/pigment loading
- Stable pH and chemical inertness
- Low vehicle demand and exceptional resistance to frosting
Applications & Uses
- Application
Filler
Properties
- Typical Properties
- Particle Size Distribution
- Chemical Analysis
| Value | Units | Test Method / Conditions | |
| Bulk Density | 0.78 | — | — |
| Oil Absorption | approx. 24 | g/100g | — |
| Whiteness | 83.0 | — | — |
| CIELAB L | 94.5 | — | — |
| CIELAB a | -0.5 | — | — |
| CIELAB b | 4.6 | — | — |
| Hardness | 6.0 | — | mohs |
| pH | 8.9 | — | — |
| Moisture Content | 0.3 | % | — |
| Value | Units | Test Method / Conditions | |
| Particle Size (Passing Through 106 μm) | 100.0 | % | — |
| Particle Size (Passing Through 75 μm) | 100.0 | % | — |
| Particle Size (Passing Through 45 μm) | 100.0 | % | — |
| Particle Size (Passing Through 30 μm) | 99.5 | % | — |
| Particle Size (Passing Through 20 μm) | 90.0 | % | — |
| Particle Size (Passing Through 15 μm) | 75.0 | % | — |
| Particle Size (Passing Through 10 μm) | 65.0 | % | — |
| Particle Size (Passing Through 5 μm) | 30.0 | % | — |
| Particle Size (Passing Through 2 μm) | 10.0 | % | — |
| Particle Size (D50) | 8.0 | μm | — |
| Value | Units | Test Method / Conditions | |
| SiO₂ Content | approx. 61.50 | % | — |
| Al₂O₃ Content | approx. 20.80 | % | — |
| Fe₂O₃ Content | max. 0.15 | % | — |
| TiO₂ Content | approx. 0.03 | % | — |
| Na₂O Content | approx. 8.40 | % | — |
| K₂O Content | approx. 6.10 | % | — |
| CaO Content | approx. 0.75 | % | — |
| MgO Content | approx. 0.10 | % | — |