Enhanced TDS
Knowde-enriched technical product data sheet
Identification & Functionality
- Chemical Family
- CASE Ingredients Functions
- Technologies
- Product Families
Features & Benefits
- CASE Ingredients Features
- Product Highlights
PYRAX B are hydrated aluminum silicate minerals produced from North Carolina deposits of the mineral pyrophyllite. PYRAX B is good inert filler for use in contractor flat paints, where it contributes to improved low angle sheen control and scrub resistance. When used in exterior paints, the neutral pH of pyrophyllite yields reduced frosting. As a replacement for mica, PYRAX B is an excellent filler in joint compounds and dry wall muds. The micaceous particle shape of PYRAX B impart mud crack resistance to high build coatings such as texture paints and block fillers.
Applications & Uses
- Markets
- Applications
- Industrial Additives End Use
- Uses
- Inert filler and extender for NR and synthetic rubbers and latexes for reducing volume costs and where low moisture pick-up is required.
- The platy particle shape imparts “mud-cracking” resistance in coatings.
- Also used in crack fillers and joint cements.
Properties
- Physical Form
- Typical Properties
Value Units Test Method / Conditions Fineness (Retained on 200 mesh) max. 1 % T-957 Brightness min. 78 - T-900 Density (At 25°C) 2.8 Mg/m³ - Loss on lgnition 3.1 % - Pounds per Gallon 23.3 - - Hegman Fineness 0 - 1 - ASTM D 1210 Oil Absorption 32.0 - 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 