Views: 2025 Author: Keystone Vessel (Wuhan) Publish Time: 2025-06-12 Origin: Keystone Vessel (Wuhan)
20PCS 200L 900L 99.9% High Purtiy HCDS Si2cl6 Hexachlorodisilane Si2Cl6 Hexachlorodisilane Gas Cylinders
UN2987 Stainless Steel Portable Tanks Hexachlorodisilane Gas Cylinders
Stainless Steel Portable Tanks
Keystone Vessel Model ：KSC200L;KSC900L
Volume：200L ; 900L
Operating Temperature：-40~65℃
Certification Medium：TEOS、STC、HCDS……Specialty Gases
Optional Certificate：UN、TS
Work Pressure：0.1MPa
Hexachlorodisilane Cl6si2 - Hexachlorodisilane Gas Cylinders
Hexachlorodisilane is a chemical used in the ALD process helping to increase the production of silicon nitride and silicon dioxide (ALD and CVD methods). HCDS is used to grow thin films of Si, SiO2, SiC by chemical vapor deposition. HCDS is a powerful deoxygenating and reducing agent. Altogen Chemicals developed know-how and expertise in HCDS manufacturing including capture, distilling, and refining technologies to perfect and maintain a consistent ultra-high level of purity for all HCDS applications within multiple high tech industries.
Standard purification method (97-99%)
The usual synthetic route to HCDS involves the reaction of chlorine on silicon alloys, but can result in low levels of metallic contamination from the silicon alloys such as titanium. Application is as a precursor to substituted disilanes and can be recovery in low quantities as one byproduct of a trichlorosilane (TCS) production reaction.
Ultra-high purity method (>99.9%)
Titanium-catalyzed semiconductor grade silane disproportionation process. High purity chemicals and repetative purification processes used in the production of ultra-pure hexachlorodidilane for semiconductor integrated circuits and solar cells.
Chemical: Hexachlorodisilane (HCDS)Formula: Cl3Si-SiCl3 (Si2Cl6)
CAS: 13465-77-5
Structure:HexachlorodisilaneAppearance/Form: Clear liquid, colorlessDensity: 1.562 g/ml at 25°CVapor Pressure: 12 mm Hg at 40°CMolecular Weight: 268.89BP: 144.2-145.4°C / MP: -1°C
Core Technical & Transport Compliance Information for Hexachlorodisilane
1. Basic Physicochemical Properties
• Chemical Formula: 
Si2Cl6
• Appearance: Colorless to pale yellow liquid with a pungent odor
• Hazard Characteristics: Hydrolyzes readily upon contact with water, producing corrosive hydrogen chloride (HCl) gas and silicon dioxide; decomposes when heated to release toxic chlorine-containing compounds; classified as a corrosive and irritating dangerous good.
2. UN2987 Compliance Requirements
• UN Classification: UN2987 falls under Class 8 Corrosive Substances, with secondary hazard of irritation.
• Proper Shipping Name: Hexachlorodisilane (standard shipping name for international transport).
• Packaging & Transport Restrictions
￮ Corrosion-resistant packaging must be used, typically glass, polytetrafluoroethylene (PTFE), or special stainless steel containers.
￮ During transportation, protect against moisture and impact; avoid co-shipment with water, alcohols, alkalis and other incompatible substances.
3. Adaptation Requirements for 900L HCDS Portable Tank Container
For transporting this product in 900L small portable tank containers, the following core conditions must be met:
Requirement Category | Specific Specifications |
Tank Material | Tank inner wall shall adopt chloride-resistant materials, 316L stainless steel or PTFE lining is recommended; carbon steel and other corrosion-susceptible materials are strictly prohibited |
Sealing & Valves | Fluoroelastomer (FKM) seals shall be used; valves shall be corrosion-resistant ball valves/globe valves with double-seal structure to prevent leakage |
Safety Accessories | Equipped with pressure relief valve (set pressure matching material vapor pressure), level gauge, temperature sensor, and emergency shut-off device |
Applicable Standards | For international maritime transport, comply with IMDG Code; for EU land transport, meet ADR regulations; for export to Russia, conform to GOST transport standards |
Loading Limit | Filling ratio shall not exceed 0.85 (considering thermal expansion risk); maximum loading capacity of 900L tank container is 765L |
Marking & Labeling | Exterior of tank container must be affixed with Class 8 corrosive substance label, UN2987 number, product name, as well as moisture-proof and no-inversion warning signs |
4. Supplementary Export Compliance (For Foreign Trade Scenarios)
• Maritime Documents: Dangerous Goods Declaration, Tank Container Inspection Certificate (e.g., CSC Certificate), and Material Compatibility Certificate are required.
• Notes for Export to Russia & India
￮ Export to Russia: Must obtain GOST-R certification; tank containers shall comply with Russian railway transport specifications (РЖД Standards).
￮ Export to India: Need to apply for DGFT Dangerous Goods Import License and provide corrosivity test report issued by third-party testing institutions.
Keystone Vessel Manufacturing Co., Ltd
Keystone VesselSpecializing - Industrial Gas Cylinders| ISO Tank| Pressure Vessel| UN Portable Tanks
