magnetic particles embedded in SiO2 , Base: SIO2, Surface Group: -NH2, particle size: 4-5 μm, unit 10 mg/ml , 7631-86-9
Synonym(s):
Silica;Silicon dioxide;Silica gel;Quartz;SBA-15
CAS NO.：7631-86-9
Empirical Formula: O2Si
Molecular Weight: 60.08
MDL number: MFCD00148343
EINECS: 231-545-4
| Pack Size | Price | Stock | Quantity |
| 5ML | RMB226.40 | In Stock |
|
| 10ml | RMB414.40 | In Stock |
|
| others | Enquire |
PRODUCT Properties
| Melting point: | >1600 °C(lit.) |
| Boiling point: | >100 °C(lit.) |
| bulk density | 200-800kg/m3 |
| Density | 2.2-2.6 g/mL at 25 °C |
| vapor pressure | 13.3hPa at 1732℃ |
| refractive index | 1.46 |
| Flash point: | 2230°C |
| storage temp. | 2-8°C |
| solubility | Practically insoluble in water and in mineral acids except hydrofluoric acid. It dissolves in hot solutions of alkali hydroxides. |
| pka | 6.65-9.8[at 20 ℃] |
| form | suspension |
| color | White to yellow |
| Specific Gravity | 2.2 |
| Odor | at 100.00%. odorless |
| PH | 5-8 (100g/l, H2O, 20℃)(slurry) |
| Resistivity | 1∞10*20 (ρ/μΩ.cm) |
| Water Solubility | insoluble |
| Sensitive | Hygroscopic |
| Crystal Structure | Trigonal |
| Hydrolytic Sensitivity | 6: forms irreversible hydrate |
| Merck | 14,8493 |
| Exposure limits | NIOSH: IDLH 3000 mg/m3; TWA 6 mg/m3 |
| Stability: | Stable. |
| Cosmetics Ingredients Functions | BULKING ABSORBENT OPACIFYING ABRASIVE VISCOSITY CONTROLLING ANTICAKING |
| InChI | 1S/O2Si/c1-3-2 |
| InChIKey | VYPSYNLAJGMNEJ-UHFFFAOYSA-N |
| SMILES | [Si](=O)=O |
| CAS DataBase Reference | 7631-86-9(CAS DataBase Reference) |
| NIST Chemistry Reference | Silicon(iv) oxide(7631-86-9) |
| IARC | 3 (Vol. Sup 7, 68) 1997 |
| EPA Substance Registry System | Silica (7631-86-9) |
| ECETOC JACC REPORT | Silicon dioxide (7631-86-9) |
Description and Uses
Silica is an inert, naturally occurring mineral used as a carrier in some pesticide products and is sometimes used as an insecticide to control crawling insects, acting via its abrasive and desiccant properties. It is moderately soluble in water and stable in the environment. It is generally considered non-toxic to biodiversity and humans. However, there are some concerns that exposure to crystalline silica particles that are small enough to reach the lungs can cause lung cancer.
manufacture of glass, water glass, refractories, abrasives, ceramics, enamels; decolorizing and purifying oils, petroleum products, etc.; in scouring- and grinding-compounds, ferrosilicon, molds for castings; as anticaking and defoaming agent.
Safety
| Symbol(GHS) |  GHS07 |
| Signal word | Warning |
| Hazard statements | H317-H412 |
| Precautionary statements | P261-P272-P273-P280-P302+P352-P333+P313 |
| Hazard Codes | Xn,Xi |
| Risk Statements | 36/37/38-36/37-22-43-52/53-36/38 |
| Safety Statements | 26-37/39-36-36/37/39-36/37-61 |
| OEB | B |
| OEL | TWA: 6 mg/m3 |
| WGK Germany | nwg |
| RTECS | VV8853000 |
| TSCA | TSCA listed |
| HS Code | 2811221000 |
| Storage Class | 12 - Non Combustible Liquids |
| Toxicity | LC inhalation in rat: > 200gm/m3/1H |
| IDLA | 3,000 mg/m3 |
| REACH Registrations | Active |
