Sillitin / Sillikolloid
Sillitin and Sillikolloid are the base of our production program. They are directly obtained from the raw earth, and therefore represent pure untreated natural products. All our other products are based on selected Sillitin grades. The following tables indicate the most important productproperties with the pertinent test methods for Sillitin and Sillikolloid. These figures are also valid for the puriss and Aktisil grades.
| Characteristics | Unit | Method | Sillitin V 85 | Sillitin V 88 | Sillitin N 82 | Sillitin N 85 | Sillitin N 87 | Sillitin Z 86 | Sillitin Z 89 | Sillikolloid P 87 |
|---|---|---|---|---|---|---|---|---|---|---|
| Brightness Y |
DIN 53 163/ | 82 | 86 | 77 | 82 | 83 | 82 | 86 | 82 | |
| Brightness Z |
DIN 53 163/ | 76 | 88 | 65 | 75 | 76 | 75 | 86 | 76 | |
| Particle Size D 50 | µm | Internal Test Procedure | 4.0 | 4.0 | 3.0 | 3.0 | 3.0 | 1.9 | 1.9 | 1.5 |
| Particle Size D 97 | µm | Internal Test Procedure | 18.0 | 18.0 | 16.0 | 16.0 | 16.0 | 9.0 | 9.0 | 6.0 |
| Residue > 40 µm | mg/kg |
DIN ISO 787 | 25 | 25 | 25 | 25 | 20 | 20 | 20 | 20 |
| Residue > 200 µm | mg/kg |
DIN ISO 787 | 5 | 5 | 5 | 5 | 5 | 3 | 3 | 3 |
| Volatile Matter at 105 °C | % |
DIN ISO 787 | 0.5 | 0.5 | 0.5 | 0.5 | 0.5 | 0.5 | 0.5 | 0.5 |
| Density | g/cm3 |
DIN ISO 787 | 2.6 | 2.6 | 2.6 | 2.6 | 2.6 | 2.6 | 2.6 | 2.6 |
| Bulk Density | g/cm3 | DIN ISO 903-1976 | 0.35 | 0.30 | 0.30 | 0.30 | 0.30 | 0.25 | 0.21 | 0.25 |
| Tamped Density | g/cm3 |
DIN ISO 787 | 0.60 | 0.60 | 0.50 | 0.50 | 0.50 | 0.40 | 0.40 | 0.35 |
| BET Surface Area | m2/g | DIN ISO 9277 | 8 | 8 | 11 | 10 | 10 | 11 | 10 | 12 |
| Oil Absorption | g/100 g |
DIN ISO 787 | 45 | 45 | 45 | 45 | 45 | 55 | 55 | 55 |
| Hardness Silica/Kaolinite |
| acc. to Mohs | 7/2.5 | 7/2.5 | 7/2.5 | 7/2.5 | 7/2.5 | 7/2.5 | 7/2.5 | 7/2.5 |
| Abrasivity | mg | acc. to Einlehner | 45 | 40 | 40 | 35 | 35 | 30 | 30 | 25 |
| Refractive Index n | sin α/sin β | 1.55 | 1.55 | 1.55 | 1.55 | 1.55 | 1.55 | 1.55 | 1.55 | |
| Water Solubility | % |
DIN ISO 787 | insoluble | insoluble | insoluble | insoluble | insoluble | insoluble | insoluble | insoluble |
| Acid Solubility | % |
DIN 53 770 | 0.4 | 0.4 | 0.5 | 0.5 | 0.5 | 0.4 | 0.4 | 0.5 |
| pH Value |
DIN ISO 787 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | |
| Chemical Analysis: SiO2 Al2O3 Fe2O3 | % |
DIN 51001 | 87 8 < 1 | 88 8 < 1 | 82 12 < 1,5 | 84 10 < 1 | 84 10 < 1 | 82 12 < 1 | 82 12 < 1 | 80 14 < 1 |
| Mineralogical Composition: |
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| Crypto-crystalline Silica | % | Based on X-ray | 70 | 70 | 60 | 65 | 65 | 60 | 60 | 55 |
| Amorphous Silica | % | Diffraction Pattern | 8 | 8 | 10 | 10 | 10 | 10 | 10 | 10 |
| Kaolinite | % | Analysis Combined | 17 | 17 | 25 | 20 | 20 | 25 | 25 | 30 |
| Other Materials | % | With Rietveld | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 |
The values shown in the table are to be considered as guidelines only.
EINECS-No. 310-127-6
CAS-No. 1020665-14-8 (Siliceous Earth)
CAS-No. 7631-86-9 (Silica), 1318-74-7 (Kaolinite)
TSCA No. 7631-86-9 (Silica), 1318-74-7 (Kaolinite)
