SB Chemicals, Plot No. 5003, Lane 52, 4th Phase, GIDC, Vapi, Gujarat — 396195

Sodium Silicofluoride

Na₂SiF₆ — Sodium Fluorosilicate, Sodium Hexafluorosilicate

Description

Sodium fluorosilicate is widely used in water fluoridation, enamel and ceramic manufacturing, metallurgical fluxes, and as a source of fluoride ions in various chemical processes.

Product Photos

Sodium Silicofluoride

Specification

Purity98–99%
AppearanceWhite powder
Bulk Density1.1–1.4 g/cm³
IUPAC NameDisodium hexafluorosilicate
Molecular Weight188.06 g/mol
Grades AvailableTechnical / Water-Treatment
HS Code (Export)28269080
SB Chemicals SKUSBF-1062

Applications

  • Fluorination Chemistry
  • Water Treatment
  • Enamel & Ceramics
  • Metallurgy
  • Electroplating

Authoritative References

Independent verification of Sodium Silicofluoride on third-party scientific databases:

Frequently Asked Questions about Sodium Silicofluoride

Is sodium silicofluoride approved for water fluoridation?

Yes. Water-treatment grade Na₂SiF₆ meets the technical specifications used by municipal water utilities, with Na₂SiF₆ ≥ 98%, As < 8 ppm, Pb < 5 ppm, free acid (as HF) < 0.5%. Each batch is shipped with a water-treatment certificate.

What is the standard packaging for Sodium Silicofluoride?

Sodium Silicofluoride is supplied in HDPE woven bags with inner LDPE liner (25 kg / 50 kg net), HDPE drums (25 / 50 / 250 kg), and FIBC jumbo bags (500 / 1000 kg) for solid grades. Liquid grades ship in HDPE-lined steel drums (250 kg) or 1000 L IBC totes. Custom packaging — including nitrogen-blanketed, moisture-tight, or food-grade containers — is available on request.

What is the minimum order quantity (MOQ) and typical lead time?

Standard MOQ is 1 metric tonne for solid grades and 200 kg for liquid grades; pilot quantities of 5–25 kg are available for R&D qualification. Stock items dispatch within 7–10 working days from confirmed PO. Made-to-order grades and large export consignments require 3–4 weeks. Indian deliveries by road typically reach 4–7 days; export FCL shipments depend on destination port.

Do you provide MSDS / SDS and a Certificate of Analysis (COA)?

Yes. A 16-section GHS-format SDS is dispatched with every shipment and is also available in advance from marketing@sbfluorochem.com. A batch-specific COA accompanies every consignment and is emailed before dispatch for goods-receipt verification. Test methods follow IS / ASTM / USP / IP / EP as applicable.

Which countries do you export to and what Incoterms do you offer?

SB Chemicals exports to over 35 countries across South-East Asia, the Middle East, Africa, Europe, and the Americas. We hold IEC, GST, and APEDA registrations. Shipments move CIF / FOB / CFR / FCA / EXW from Mundra, Nhava Sheva (JNPT), or Hazira ports. Letter of Credit (LC), TT, and DA terms are accepted subject to credit approval.

Are your products manufactured to ISO 9001:2015 quality standards?

Yes. SB Chemicals operates an ISO 9001:2015 certified Quality Management System at the GIDC Vapi facility. Every batch undergoes raw-material testing, in-process control, and final QC release before despatch. Clients are welcome to schedule a third-party audit of the plant.

Quick Facts

CAS Number16893-85-9
FormulaNa₂SiF₆
CategoryFluorosilicates
FormWhite crystalline powder
Item Code1045

Safety & Transport

UN 2674, Class 6.1, PG III

Safety Data Sheet (SDS) available on request. Contact us for regulatory documentation.

Packaging

25 kg HDPE bags, 500/1000 kg jumbo bags

SB Chemicals

Need This Product?

Get pricing, samples, or technical support.

✉ Contact Sales 💬 WhatsApp
+91 99798 87375

Product Reference Data

Chemistry & Physical Properties

Sodium hexafluorosilicate, formula Na2SiF6, formula weight 188.05 g/mol. White or colourless crystalline powder, hexagonal crystal system. Density 2.68 g/cm3. Solubility in water 0.65 g/100mL at 20°C, increasing with temperature. Decomposes above 600°C releasing SiF4 and NaF. Stable in dry air; non-hygroscopic.

Standards & Specifications

Water-fluoridation grade meets NSF/ANSI Standard 60 and ANSI/AWWA B702 (American Water Works Association). Indian water-treatment grade meets IS 14591:1998. Industrial grades meet generic suppliers specifications. Glass-batch grade used in opal-glass production conforms to internal melt-flux specifications. Pharmacopeial grades not typically supplied.

Regulatory & Transport Profile

CAS 16893-85-9. UN 2674 — Class 6.1 (Toxic), PG III. GHS pictograms: GHS06 (toxic), GHS07 (harmful). REACH registered (EC 240-934-8). TSCA listed. NSF Standard 60 certification applies for drinking-water fluoridation grade. WHO Guidelines for Drinking-Water Quality apply for water-treatment use.

Available Grades

GradeTypical SpecificationCommon Use
Technical98%+Glass batches, ceramic glazes, concrete densifier
Water-Treatment (NSF 60)98%+ low-insolublesMunicipal water fluoridation
Fine-Particle98%+ D50<50µmOpal-glass tableware, ceramic frits

Product Information & Resources

Frequently Asked Questions

Is this the same as fluorosilicic acid?
No — fluorosilicic acid is the aqueous H2SiF6 acid. Sodium silicofluoride is the crystalline sodium salt Na2SiF6.
Is it suitable for drinking-water fluoridation?
Only the NSF Standard 60-certified water-treatment grade is suitable for potable water. Confirm certification before ordering for water-utility use.
What does "silicofluoride" mean?
It refers to the [SiF6]2- hexafluorosilicate anion, which decomposes during glass melting to release fluoride and silica.
Can it be supplied in bulk?
Yes — 25 kg HDPE bags are standard, with 500/1000 kg jumbo bags available for high-volume operations.

Product Name in Other Languages

中文 (Chinese)
氟硅酸钠
日本語 (Japanese)
ヘキサフルオロケイ酸ナトリウム
한국어 (Korean)
헥사플루오로규산 나트륨
Español (Spanish)
Hexafluorosilicato de sodio
العربية (Arabic)
سداسي فلورو سيليكات الصوديوم
Русский (Russian)
Гексафторосиликат натрия
Português (Portuguese)
Hexafluorosilicato de sódio

Authoritative References & External Data Sources

For peer-reviewed property data, regulatory listings, and structure verification:

PubChem (CID 28127) →CAS Registry — 16893-85-9 →Wikipedia →NSF Standard 60 →ChemBK →