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Product Details
The high-purity fibre-grade silicon tetrachloride produced by YOFC's wholly-owned subsidiary, Hubei Flying Optical Fibre Material Co., Ltd., is manufactured using a multi-column continuous distillation process combined with molecular sieve adsorption technology. High-purity SiCl4 serves as the primary raw material for optical fibre preforms. This product meets the requirements of three mainstream optical fibre preform manufacturing technologies: PCVD, OVD, and VAD.
- Chinese name: 四氯化硅
- English name: Silicon Tetrachloride
- CAS: 10026-04-7
- EINECS No.: 233-054-0
- Molecular formula: SiCl4
- MDL No.: MFCD00011229
- Molecular weight: 169.9
| CASNo. | Name | Formula | Abbr. | Assay |
| 10026-04-7 | Silicon Tetrachloride | SiCl4 | STC | 99%～99.9999% |
Properties
- The product appears as a colorless or light yellow fuming liquid with a pungent odor and a tendency to deliquesce.
- Appearance: colorless transparent fuming liquid. It has an unpleasant asphyxiating odor, and is miscible with benzene, ether, chloroform, petroleum ether, carbon tetrachloride, tin tetrachloride, titanium tetrachloride, sulfur monochloride, and sulfur dichloride in all proportions.
- Solubility: miscible in most organic solvents such as benzene, chloroform, and petroleum ether.
Physical and Chemical Data
| pH | ＜7 | Melting point/freezing point (°C) | -70 |
| Relative density(water = 1) | 1.48 | Boiling point, initial boiling point, and boiling range (°C) | ≥57.6 |
| Relative vapor density (air = 1) | 5.86 | Saturated vapor pressure (kPa) | 55.99 |
| Combustion heat (KJ/mol) | Not significant | Critical temperature (°C) | 233.6 |
| Critical pressure (MPa) | 3.73 | Logarithm value of octanol/water partition coefficient | 1.77 |
| Flash point (°C) | Not significant | Autoignition temperature (°C) | Not significant |
| Upper explosive limit% (V/V) | Not significant | Lower explosive limit% (V/V) | Not significant |
Product Applications
- Application: The high-purity silicon tetrachloride product is available in four grades: OVD, VAD, PCVD, and electronic grade. OVD, VAD, and PCVD grades are used for manufacturing the cladding and core of optical fibre preforms, while electronic-grade silicon tetrachloride is used for semiconductor epitaxial silicon wafers.
- Packaging: tank trucks
- Weight: 275 kg/tank, 1000 kg/tank, 1750 kg/tank, and 23 t/tank
- Fibre-grade silicon tetrachloride STC(SiCl4), with a capacity of 8000 tons
- 6N-grade OVD/VAD/PCVD high-purity silicon tetrachloride
- An electronic-grade automatic packaging system has been established
Product Specifications
| High-purity Silicon Tetrachloride (GB/T 38867-2020) Specifications | |||
| Inspection method | Item | Inspection report issued by Shanghai Institute of Measurement and Testing Technology | report issued by Hubei Flying Optical Fibre Material Company Limited |
| report issued by Hubei Flying Optical Fibre Material Company Limited | Appearance | Colorless transparent liquid | Colorless transparent liquid |
| GC analysis | SiCl4 | ＞99.99% | ＞99.9999% |
| SiH2Cl2+SiHCl3 | ＜0.01% | - | |
| Other high boiling point compounds | ＜0.01% | - | |
| GC-MS analysis | Chlorodimethylsilane | Not defected | ＜1mg/kg |
| Dichloromethylsilane | Not defected | ＜1mg/kg | |
| Chlorotrimethylsilane | Not defected | ＜1mg/kg | |
| Trichloromethylsilane | Not defected | ＜1mg/kg | |
| ICP-MS analysis | Li | ＜0.1μg/kg | - |
| B | ＜0.1μg/kg | ＜0.1μg/kg | |
| Na | ＜0.11μg/kg | ＜0.11μg/kg | |
| Cd | ＜0.1μg/kg | - | |
| Sb | ＜0.1μg/kg | - | |
| Pb | ＜0.1μg/kg | ＜0.1μg/kg | |
| Mg | ＜0.1μg/kg | ＜0.1μg/kg | |
| Al | ＜0.1μg/kg | ＜0.1μg/kg | |
| P | ＜0.1μg/kg | ＜0.1μg/kg | |
| Ca | ＜0.1μg/kg | ＜0.1μg/kg | |
| V | ＜0.1μg/kg | ＜0.1μg/kg | |
| Cr | ＜0.1μg/kg | - | |
| Mn | ＜0.1μg/kg | ＜0.1μg/kg | |
| Fe | ＜0.15μg/kg | ＜0.1μg/kg | |
| Ni | ＜0.1μg/kg | ＜0.1μg/kg | |
| Cu | ＜0.1μg/kg | ＜0.1μg/kg | |
| Zn | ＜0.1μg/kg | ＜0.1μg/kg | |
| K | ＜0.1μg/kg | ＜0.1μg/kg | |
| Ti | ＜0.1μg/kg | ＜0.1μg/kg | |
Sales hotline of Hubei Flying Optical Fibre Material Co., Ltd: +86 0728-8155198