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Sodium Fluorosilicate CAS#16893-85-9

  • Sodium Fluorosilicate CAS#16893-85-9
  • Sodium Fluorosilicate CAS#16893-85-9
  • Sodium Fluorosilicate CAS#16893-85-9
  • Sodium Fluorosilicate CAS#16893-85-9
  • Sodium Fluorosilicate CAS#16893-85-9

Sodium Fluorosilicate CAS#16893-85-9

High Purity and Stable Crystal Form：Appears as white crystals or colorless hexagonal crystals with uniform structure, ensuring consistent quality and easy handling in industrial applications.


Good Chemical Reactivity：Easily decomposes in alkaline solutions and at high temperatures to form useful products such as sodium fluoride and silica, making it suitable as a reactive intermediate in chemical processing.


Excellent Moisture Absorption Ability：Possesses hygroscopic properties that enhance its performance in formulations requiring controlled moisture interaction.


Wide Solubility Compatibility：Shows good solubility in acids and selected solvents, providing flexibility for use in various chemical and industrial systems.


Phone ：+86 18626059817
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product description

Product Description of Sodium Fluorosilicate CAS#16893-85-9

Sodium fluorosilicate is available as white crystals, crystalline powder or colorless hexagonal crystals. It is odorless, tasteless and hygroscopic, with a relative density of 2.68. It is soluble in ethyl ether, insoluble in alcohol, and more soluble in acids than in water. It decomposes in alkaline solution into sodium fluoride and silica, and breaks down into sodium fluoride and silicon tetrafluoride when heated to around 300 °C.


Product Application of Sodium Fluorosilicate CAS#16893-85-9

Sodium hexafluorosilicate is used for water fluoridation and as a raw material for opal glass and ore refining. It serves as feedstock for manufacturing fluoride chemicals including sodium fluoride, sodium hexafluoroaluminate, potassium hexafluorosilicate, ammonium fluoride and calcium fluoride. It is also applied as a flotation agent, wet etching component, wood preservative, brazing flux and welding compound, as well as an active ingredient in concrete.

Product Information

Parameters


Melting pointmelts at red heat, decomposing [MER06]
Boiling point620℃[at 101 325 Pa]
density2.68 g/mL at 25 °C(lit.)
vapor pressure0.01Pa
refractive index1.31
solubilityinsoluble in ethanol
formCrystals
colorWhite
Specific Gravity2.68
Odorodorless
Water SolubilitySlightly soluble in water. Solubility increases with temperature. Insoluble in alcoholSlightly soluble in water. Insoluble in alcohol.
Merck148,624
Exposure limitsACGIH: TWA 2.5 mg/m3
NIOSH: IDLH 250 mg/m3; TWA 2.5 mg/m3
Stability:Stable. Incompatible with oxidizing agents, water. Moisture sensitive.
LogP0.001
CAS DataBase Reference16893-85-9(CAS DataBase Reference)
EPA Substance Registry SystemSodium fluosilicate (16893-85-9)


Safety Information


Hazard CodesT,Xi
Risk Statements23/24/25
Safety Statements26-45
RIDADRUN 2674 6.1/PG 3
WGK Germany2
RTECSVV8410000
Hazard NoteIrritant
TSCAYes
HazardClass6.1
PackingGroupIII
HS Code2826908090
Hazardous Substances Data16893-85-9(Hazardous Substances Data)
ToxicityLD in rabbits (mg F/kg): 76 intragastric; in rats (mg F/kg): 42 s.c. (Muehlberger); LD in guinea pigs (mg/kg): 250 orally, 500 s.c. (Waldbott)


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We are a supply chain service provider rather than a single manufacturer. Instead of being tied to one specific factory, we have established deep partnerships with numerous high-quality domestic chemical enterprises that hold certifications such as ISO and REACH. This allows us to flexibly match the most suitable supply sources to your needs while independently conducting third-party quality inspections to ensure delivery quality and price competitiveness.
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We maintain transit warehouses with standing inventory in Southeast Asia, the Middle East, and Eastern Europe.
For you: You can pick up goods directly from local warehouses without the need for full-container orders; delivery times are reduced from the standard 30–45 days to just 3–5 days.
Reduced inventory pressure: You can purchase small batches for trial and quality verification before scaling up orders, avoiding the need to tie up large amounts of capital upfront.
Emergency restocking: If your production line faces a sudden material shortage, we can urgently dispatch supplies from our regional warehouses to prevent production downtime.
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For standard products, the MOQ is typically one 20-foot container (approx. 16–20 tons) for direct shipments from China. However, for stock picked up from overseas warehouses, we support orders starting from 1 ton—ideal for sample testing or small-batch production. Specific MOQs depend on the product category and packaging type; please contact us for details.
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We implement a "three-level quality control" system:
Before leaving the factory: We require the factory to provide a Certificate of Analysis (COA) for the specific batch.
Before shipment: We commission international third-party agencies like SGS or Intertek to conduct random inspections, with costs covered by us (for long-term partners).
After arrival: If quality issues arise, we commit to unconditional negotiation regarding returns, exchanges, or compensation, and we assume full responsibility. All terms are stipulated in the contract.
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FOB (China Port): Goods are prepared and shipped within 7–15 working days after the contract is signed and the prepayment is received.
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Which trade terms do you offer? Do you support DDP (Delivered Duty Paid)?

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We are proficient in handling common terms such as FOB, CIF, CFR, and EXW. Additionally, for regions covered by our overseas warehouses, we offer DDP services (including duties and door-to-door delivery), allowing you to receive goods without the hassle of complex import customs clearance procedures. Please consult your sales manager for specific costs.
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If stock is available at an overseas warehouse, we can provide 1–2 kg of samples for free; you only need to cover the local courier fees.
If shipping from China, we can arrange delivery via DHL or FedEx; samples are free, but you bear the international shipping costs. Once a clear intent to cooperate is established, these shipping costs can be deducted from your first order.
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We offer a price protection mechanism:
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If you anticipate a market downturn, we can negotiate floating pricing—settling based on a benchmark price on the date of shipment or arrival—to flexibly manage fluctuations.
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We provide full-lifecycle service:
Usage Guidance: Assistance with adjusting processing parameters (if required).
Complaint Handling: Response within 48 hours and a solution provided within 7 days.
Regular follow-ups: Proactive contact every six months to understand changing needs and optimize supply solutions.
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