Silicic Acid Precipitated Extra Pure 1Kg
precipitated extra pure light
Manufacturer: Merck
Catalog ID: 100657.1000
Stock: In Stock
Description
| Catalogue Number | 100657 |
Product Information
| CAS number | 10279-57-9 |
| EC number | 231-545-4 |
| Hill Formula | O₂Si *x H₂O |
| Chemical formula | SiO₂ * x H₂O |
| Molar Mass | 60.08 g/mol |
| HS Code | 2811 22 00 |
Physicochemical Information
| Density | 2 - 6 g/cm3 (20 °C) |
| Melting Point | 1710 °C |
| Bulk density | 60 - 600 kg/m3 |
Toxicological Information
| LD 50 oral | LD50 Rat > 10000 mg/kg |
| LD 50 dermal | LD50 Rabbit > 5000 mg/kg |
Storage and Shipping Information
| Storage | Storage temperature: no restrictions. |
Specifications
| Assay (gravimetric, SiO₂, calc. on ignited substance) | 99.0 - 100.5 % |
| Identity | passes test |
| pH-value (3.3 %, water) | 3.0 - 8.0 |
| Chloride (Cl) | ≤ 0.05 % |
| Sulfate (SO₄) | ≤ 0.5 % |
| Heavy metals (as Pb) | ≤ 0.0025 % |
| Fe (Iron) | ≤ 0.03 % |
| Loss on ignition (2 h, 900 °C) | ≤ 8.5 % |
| Particle size (< 0.1 mm) | about 99 |
| Bulk density | about 6 |
