CAS 1344-09-8
Sodium Silicate
Sodium Silicate (water glass) is used as a flotation depressant and dispersant in mining, and as a binder, detergent builder and silica raw material.
Sodium silicate is a glass of silica and soda, sold as a viscous solution or as solid lumps. Its properties are set by the weight ratio of SiO₂ to Na₂O: lower ratios are more alkaline and more soluble, higher ratios are more 'neutral' and bind more strongly.
In flotation it depresses silicate gangue minerals and disperses slimes, which sharpens separation in fluorite, phosphate, scheelite and other non-sulphide circuits. In industry it binds foundry sand and corrugated board, builds detergents, stabilises soil and is the starting material for silica gel and precipitated silica.
- CAS number
- 1344-09-8
- Grades / forms
- Depressant grade
- Industries
- Mining & Oil Drilling
Enquire
Get a price for Sodium Silicate
Send quantity, grade and destination port. Pricing, lead time and documentation come back within one business day.
Request a quotation- Certificate of Analysis with every batch
- MSDS in destination format
- Toll manufacturing to your specification
- Private label packing available
Typical applications
- Depressant and dispersant in mineral flotation
- Builder in detergent powders
- Adhesive for corrugated board and paper tubes
- Binder for foundry moulds (CO₂ process)
- Soil stabilisation and grouting
- Raw material for silica gel and precipitated silica
Packing options
- 250–300 kg HDPE drums
- 1,000 L IBCs
- Lumps in jumbo bags
Storage & handling
Liquid grades are alkaline and should be kept in closed containers to stop a skin forming. Protect from freezing. Lumps are dissolved under pressure with steam.
Documentation
Certificate of Analysis, MSDS, Certificate of Origin, dangerous goods declaration where applicable, and third-party pre-shipment inspection on request.
Typical specification
- Weight ratio (SiO₂:Na₂O)
- 2.0–3.3, by grade
- Form
- Liquid (about 38–48% solids) or glassy lumps
- Density (liquid)
- 1.38–1.60 g/cm³, by grade
- Appearance
- Clear to slightly hazy viscous liquid
Typical values for reference. The exact specification is agreed before the order and confirmed on the Certificate of Analysis for each batch.
Sodium Silicate — frequently asked
Flotation commonly uses sodium silicate with a weight ratio of about 2.4 to 3.3. Higher-ratio grades are stronger gangue depressants; the right ratio and dose are confirmed by laboratory flotation tests on the ore.
Lumps are much cheaper to ship because they contain no water, but they need a pressure dissolver with steam. Liquid sodium silicate is ready to use and suits plants without dissolving equipment.
Sodium silicate solutions are alkaline and irritating to skin and eyes, with higher-alkalinity (low-ratio) grades being more corrosive. Most liquid grades are not regulated as dangerous goods for sea freight, but goggles and gloves should be worn.
Yes. Chemtrade manufactures and exports Sodium Silicate (CAS 1344-09-8) from Surat, Gujarat, India to more than 55 countries, for customers in Mining & Oil Drilling. Send your grade, quantity and destination port for a quotation within one business day.
Every shipment of Sodium Silicate from Chemtrade includes a batch-specific Certificate of Analysis (COA) and Material Safety Data Sheet (MSDS). Certificate of Origin, third-party pre-shipment inspection and destination-specific regulatory documentation are arranged on request.
Get in touch
Send us your spec,
we'll run the batch.
Send your formulation or product name, target volume and destination port. You get pricing, lead time and documentation back within one business day — under NDA if you prefer.
Mon – Sat, 9:00 – 18:30 IST · Surat, India & Buenos Aires, Argentina