PYRAX® WA Pyrophyllite
PYRAX® WA Pyrophyllite is a unique natural mixture of platy silicates, principally pyrophyllite, and quartz. PYRAX WA has a coarser particles size than PYRAX B. As a replacement for mica, PYRAX WA is an excellent filler in joint compounds and dry wall muds. PYRAX WA imparts mud crack resistance to high build coatings such as texture paints and block fillers. PYRAX WA is a 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.
Properties
- Physical Form
- Powder, Solid
- Powder
- Solid
Identification
- CASE Ingredients Functions
- FillerSlip Control Agent
Other characteristics
- Brand
- PYRAX
- Functions
- Filler, Slip Control Agent
- Usage
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.
- Markets
- Building & Construction
- Paints & Coatings
- Technology
- CASE Ingredients
- Industrial Additives & Materials
- 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.
- Chemical Inventories
- AICS (Australia)
- CICR (Turkey)
- DSL (Canada)
- ECL (Korea)
- EEC/EU
- EHS (Malaysia)
- EINECS (EU)
- ELINCS (EU)
- Industrial Additives End Use
- Cement
- Plasterboard
Technical data
Table 1 of 2
8 rows| Characteristic | Value | Unit | Method |
|---|---|---|---|
| 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 | — | — |
Table 2 of 2
9 rows| Characteristic | Value | Unit |
|---|---|---|
| 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 | % |
