To catalogue
Portafill® A25
- CASE Ingredients Features
- Chemical ResistanceExcellent WhitenessGood BrightnessHigh Chemical PurityImproved Water SpottingNarrow Particle Size Distribution
- Chemical Name
- Alumina Trihydrate (ATH)
- Chemical Family
- Aluminum Compounds
Portafill® A25 is produced from carefully selected synthetic aluminum hydroxide (ATH). The standardized quality of Portafill® A is guaranteed by means of an ISO 9001-certified quality management plan. The chemical composition of the raw material and the finished product is closely monitored, and the particle size is kept within a narrow variation. Portafill® A micronized functional fillers are used in thermosetting powder coatings as an alternative to barium sulfate, when the high density is a limitation. In addition, Portafill® A fillers are less prone to the phenomenon known as "water spotting" in comparison to barium sulfate. It has very good chemical inertness (for outdoor and chemical applications).
Properties
- Physical Form
- Powder
Identification
- CASE Ingredients Functions
- Filler
Product families
Applications
Paints & Coatings — Industrial Coatings
- Industrial Coatings
Product Families
CASE Ingredients — Additives
- Fillers & Extenders
Other characteristics
- Brand
- Dar-Tech Portafill
- End Uses
- Powder Coating
- Functions
- Filler
- Particle Size
- 7.3 microns
- Oil Absorption
- 21.0 g/100 g
- Markets
- Paints & Coatings
- Technology
- CASE Ingredients
- Labeling Claims
- High Purity
- Country Availability
- Canada
- USA
- Coating End Applications
- Powder Coating
- Certifications and Compliance
- ISO 9001
Technical data
Table 1 of 3
12 rows| Characteristic | Value | Unit | Method |
|---|---|---|---|
| Specific Surface Area | 4.1 | m²/g | BET |
| Oil Absorption | 21.0 | g/100g | ISO 787/5 |
| Color (D65;10º, L*) | 97.0 | — | CIELAB DIN 6174 |
| Color (D65;10º, a*) | 0.7 | — | CIELAB DIN 6174 |
| Color (D65;10º, b*) | 2.0 | — | CIELAB DIN 6174 |
| Moisture Content | 0.2 | % | ISO 787/2 |
| pH | 9.0 | — | ISO 787/9 |
| Density | 2.4 | g/cm³ | — |
| Apparent Density | 0.6 | g/cm³ | AP method (MF-17) |
| Hardness | 3.0 | — | Mohs’ scale |
| Refractive Index | 1.57 | — | — |
| Conductivity | 60.0 | μS/cm | ISO 787/14 |
Table 2 of 3
5 rows| Characteristic | Value | Unit | Method |
|---|---|---|---|
| Percentage Passing on Individual Sieve (38 μm) | 0.15 | % | — |
| Particle Size (D10) | 1.4 | μm | Laser diffraction Sympatec |
| Particle Size (D50) | 7.3 | μm | Laser diffraction Sympatec |
| Particle Size (D90) | 18.2 | μm | Laser diffraction Sympatec |
| Particle Size (D97) | 24.0 | μm | Laser diffraction Sympatec |
Table 3 of 3
4 rows| Characteristic | Value | Unit | Method |
|---|---|---|---|
| Aluminum Oxide (Al₂O₃) | 65.0 | wt% | XRF |
| Sodium Oxide (Na₂O) | 0.2 | wt% | XRF |
| Ferric Oxide (Fe₂O₃) | 0.01 | wt% | XRF |
| Loss on Ignition (1000°C, 1 hour) | 34.5 | wt% | XRF |
