Spacerite® S-3 Alumina Trihydrate
- CAS Number
- 21645-51-2
- EC Number
- 244-492-7
- Chemical Name
- Alumina Trihydrate (ATH), Calcium Aluminum Borosilicate
SpaceRite S-3 is a fine crystalline, aluminum trihydroxide with uniform particles averaging about one micron in diameter. It is an organic-free pure white powder produced by a proprietary precipitation process that closely controls particle-size distributions. SpaceRite S-3 can also replace other extenders providing enhanced performance and benefits in coatings and adhesives.
Properties
- Physical Form
- Powder
- Solid
Identification
- Chemical Family
- Aluminum Compounds, Calcium & Calcium Compounds, Silicates, TrihydratesAluminum CompoundsCalcium & Calcium CompoundsSilicatesTrihydrates
- CASE Ingredients Features
- Abrasion ResistanceAlkali ResistanceChemical ResistanceChemically InertColor RetentionExcellent DispersibilityExcellent StabilityFrost ResistanceGood Gloss RetentionGood PrintabilityModerate Yellowing TendencyNarrow Particle Size DistributionThermal ResistanceTranslucentWater ResistanceWeather Resistance
- CASE Ingredients Functions
- FillerFlame Retardant
Product families
Applications
- Architectural Coatings
- Architectural Coatings
- Other Printing Applications
Product Families
- Fillers & Extenders
- Functional Additives
Other characteristics
- Brand
- Spacerite
- Features
Abrasion Resistance, Alkali Resistance, Chemical Resistance, Chemically Inert, Color Retention, Excellent Dispersibility, Excellent Stability, Frost Resistance, Good Gloss Retention, Good Printability, Moderate Yellowing Tendency, Narrow Particle Size Distribution, Thermal Resistance, Translucent, Water Resistance, Weather Resistance
- Functions
- Filler, Flame Retardant
- Labeling Claims
- Low VOC
- Compatible Polymers & Resins
- Alkyds, Polyurethanes (PU)
- Color
- White
- Markets
- Building & Construction
- Paints & Coatings
- Printing & Packaging
- Appearance
- White
- Coating Type
- Powder Coating
- Radiation Curable Coating
- Solventless & High Solids Coating
- Waterborne Coating
- Technology
- CASE Ingredients
- HIGHLIGHTS
Narrow particle size distribution (1.0 micron median); Low oil absorption; High brightness; Clean white color; Low specific gravity; Non-abrasive; Excellent dispersion characteristics; Chemically inert; UV transparent
- Recommended Applications
- Architectural Coatings
- High solids/low VOC coatings
- UV coatings
- Organic colored pigments
- Compatible Polymers and Resins
- Alkyds
- Polyurethanes (PU)
Technical data
Table 1 of 3
3 rows| Characteristic | Value | Unit | Method |
|---|---|---|---|
| Al(OH)₃ | 99.5 | % | Difference |
| Na₂O (Soluble) | max. 0.04 | % | Flame Emissions Photometry |
| Moisture | 0.4 | max | Microwave |
Table 2 of 3
9 rows| Characteristic | Value | Unit | Method |
|---|---|---|---|
| Brightness (% Z) | 99.0 | % | Z value of the XYZ Tristimulus divided by |
| Particle Size d50 | 1 | μm | Sedigraph 5100 |
| Density | 2.42 | g/cm³ | — |
| Loose bulk density | 0.3 | g/cm³ | Modified ASTM B212-89 |
| OIl Absorption | 31.0 | g/100g | — |
| Hardness (Mohs) | 3 | — | — |
| Packed Bulk Density | 0.5 | g/cm³ | Modified ASTM B527-85 |
| Refractive Index | 1.57 | — | — |
| Gallons per pound | 0.0495 | — | — |
Table 3 of 3
2 rows| Characteristic | Value | Method |
|---|---|---|
| Color | White | — |
| pH (Not a Buffer) | 9.8 | ASTM 1208 |
