Spacerite® S-11 Alumina Trihydrate (ATH)
- CAS Number
- 21645-51-2
- EC Number
- 244-492-7
- Chemical Name
- Alumina Trihydrate (ATH), Calcium Aluminum Borosilicate
SpaceRite S-11 is a fine crystalline, aluminum trihydroxide with uniform particles averaging 1/4 micron in diameter. It is an organic-free pure white powder produced by a proprietary precipitation process that closely controls particlesize distributions. SpaceRite S-11 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 Salts, Silicates, TrihydratesAluminum CompoundsCalcium SaltsSilicatesTrihydrates
- CASE Ingredients Features
- Abrasion ResistanceChemical ResistanceChemically InertColor RetentionCorrosion ResistanceEasy HandlingExcellent DispersibilityExcellent StabilityFlame RetardantGood Gloss RetentionHigher Filler ContentImproved Substrate WettingLow VOCModerate Yellowing TendencyNarrow Particle Size DistributionWeather Resistance
- CASE Ingredients Functions
- FillerFlame Retardant
Product families
Applications
- Architectural Coatings
- Architectural Coatings
Product Families
- Fillers & Extenders
- Functional Additives
Other characteristics
- Brand
- Spacerite
- Features
Abrasion Resistance, Chemical Resistance, Chemically Inert, Color Retention, Corrosion Resistance, Easy Handling, Excellent Dispersibility, Excellent Stability, Flame Retardant, Good Gloss Retention, Higher Filler Content, Improved Substrate Wetting, Low VOC, Moderate Yellowing Tendency, Narrow Particle Size Distribution, Weather Resistance
- Functions
- Filler, Flame Retardant
- Labeling Claims
- Low VOC
- Compatible Polymers & Resins
- Alkyds
- Color
- White
- Markets
- Building & Construction
- Paints & Coatings
- Appearance
- White
- Coating Type
- Plastisol Coating
- Powder Coating
- Primer
- Radiation Curable Coating
- Solventborne Coating
- Solventless & High Solids Coating
- Varnishes
- Waterborne Coating
- Technology
- CASE Ingredients
- HIGHLIGHTS
Narrow particle size distribution (.25 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
Technical data
Table 1 of 3
3 rows| Characteristic | Value | Unit | Method |
|---|---|---|---|
| Al(OH)₃ | 99.6 | % | Difference |
| Na₂O (Soluble) | 0.04 | % | Flame Emissions Photometry |
| Moisture | 0.5 | % | Microwave |
Table 2 of 3
9 rows| Characteristic | Value | Unit | Method |
|---|---|---|---|
| Brightness (% Z) | 99.5 | % | Z value of the XYZ Tristimulus divided by |
| Particle Size d50 | 0.31 | μm | Horiba 5100 |
| Density | 2.42 | g/cm³ | — |
| Loose bulk density | 0.36 | g/cm³ | Modified ASTM B212-89 |
| OIl Absorption | 28.0 | g/100g | — |
| Hardness (Mohs) | 3 | — | — |
| Packed Bulk Density | 0.49 | 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 |
