Enhanced TDS
Knowde-enriched technical product data sheet
Identification & Functionality
Features & Benefits
- CASE Ingredients Features
- Product Highlights
PYRAX WA are hydrated aluminum silicate minerals produced from North Carolina deposits of the mineral pyrophyllite. When used in exterior paints, the neutral pH of pyrophyllite yields reduced frosting. As a replacement for mica, PYRAX WA are excellent fillers in joint compounds and dry wall muds. The micaceous particle shape of PYRAX WA impart mud crack resistance to high build coatings such as texture paints and block fillers.
Applications & Uses
- Markets
- Applications
- Industrial Additives End Use
- Uses
- Gives maximum brightness of all the PYRAX’s.
- Imparts “mud cracking” resistance to high-build coatings such as texture paints, block fillers, crack fillers and joint cement.
- Inert filler for natural, synthetic rubber and latexes where low moisture pick-up is required.
Properties
- Physical Form
- Typical Properties
Value Units Test Method / Conditions Brightness min. 76 - T-900 Fineness (Retained on 200 mesh) max. 3.0 % T-957 Density (At 25°C) 2.8 Mg/m³ - Loss on Ignition 3.1 % - Pounds per Gallon 23.3 - - Hegman Fineness 0 - 1 - ASTM D 1210 Oil Absorption 31.0 - ASTM D 281 pH Value 6.8 - - - Chemical Analysis
Value Units Test Method / Conditions Aluminum Oxide 18.0 % - Silicon Dioxide 77.0 % - Iron Oxide 0.5 % - Titanium Dioxide 0.2 % - Calcium Oxide max. 0.1 % - Magnesium Oxide max. 0.1 % - Sodium Oxide 0.2 % - Potassium Oxide 1.0 % - Ignition Loss (1000°C) 3.0 % -
Regulatory & Compliance
Technical Details & Test Data
- Particle Size Distribution of PYRAX B and PYRAX WA
Particle Size Distribution
(Horiba LA 300)PYRAX B Pyrophyllite PYRAX WA Pyrophyllite
D10 5 μm 6 μm D50 18 μm 20 μm D90 41 μm 50 μm D95 50 μm 64 μm 