- White carbon black
-
- $3.50/ kg
-
2024-09-20
- CAS:10279-57-9
- Min. Order: 1kg
- Purity: ≥98%
- Supply Ability: 3000tons/month
- Silica glass
-
- $1120.00 / 1T
-
2024-05-01
- CAS:10279-57-9
- Min. Order: 1T
- Purity: 98%
- Supply Ability: 20T
- Silica glass
-
- $1120.00 / 1T
-
2024-05-01
- CAS:10279-57-9
- Min. Order: 1T
- Purity: 98%
- Supply Ability: 20T
|
| Product Name: | Silica glass | | Synonyms: | LICHROSORB(R) 60;ACID WASHED STANDARD SUPER-CEL NF;AEROSIL(R) 200;SilicicAcid(100-200Mesh-UseInLipidChromatogr.;SilicicAcidPrecipitatedDried;SilicicAcidForUseInLipidChromatography;SILICA,HYDRATED;SILICA TLC | | CAS: | 10279-57-9 | | MF: | H2O3Si | | MW: | 78.1 | | EINECS: | 600-358-3 | | Product Categories: | Silicone Series;Inorganics;photoazide | | Mol File: | 10279-57-9.mol |  |
| | Silica glass Chemical Properties |
| Melting point | 1610 °C(lit.) | | Boiling point | >100 °C(lit.) | | density | 2.6 g/mL at 25 °C(lit.) | | refractive index | n20/D 1.544(lit.) | | storage temp. | no restrictions. | | form | tablets (~0.5 g each) | | Water Solubility | Insoluble in water. | | Exposure limits | NIOSH: IDLH 3000 mg/m3; TWA 6 mg/m3 | | InChI | InChI=1S/O2Si.H2O/c1-3-2;/h;1H2 | | InChIKey | LRCFXGAMWKDGLA-UHFFFAOYSA-N | | SMILES | [Si](=O)=O.O | | EPA Substance Registry System | Silica, hydrate (10279-57-9) |
| Hazard Codes | Xn | | Risk Statements | 48/20 | | Safety Statements | 22 | | WGK Germany | 3 | | RTECS | VV7340000 | | F | 3 | | HS Code | 2811 22 00 | | Toxicity | LD50 orally in Rabbit: > 10000 mg/kg LD50 dermal Rabbit > 5000 mg/kg |
| | Silica glass Usage And Synthesis |
| Structure |
Silica glass is a continuous network of corner-sharing SiO4 tetrahedra where each oxygen bridges two tetrahedra (i.e. only Q4 speciation). However, a more complex system might contain 75% Q3 (tetrahedra with one free non-bridging oxygen) and 25% Q2 (two non-bridging oxygens). For silica glasses, the first diffraction peak, Q1, has been associated with intermediate-range ordering with a periodicity of 2π/Q1 ~ 6 Å. This ordering beyond the first few nearest neighbour tetrahedra arises from the boundaries between successions of cages comprising a 3-D covalent network structure. Therefore, the position and shape of the first sharp diffraction peak Q1 can provide information on different-sized ring distributions within the material. The second diffraction peak at position Q2 has been linked to chemical or extended range ordering with a periodicity of 2π/Q2 ~ 3 Å, and the local Si–O–Si and O–Si–O bond-angle distributions can persist to distances as large as > 5 Å.
| | Uses | Typical properties: S.A.250m^2/gSilicon oxide is used as a catalyst support material having a high surface area. It acts as a medium to which catalyst is affixed. Several metals such as platinum, rhodium, ruthenium, silver, copper, nickel, iron, manganese, cobalt, tungsten and gold are supported over silicon dioxide and used as a catalyst in synthetic chemistry for various applications. For example, silica-supported gold catalysts is used for carbon monoxide oxidation by a solution-based technique. |
| | Silica glass Preparation Products And Raw materials |
|