Colloidal silica, alumina sol and silicates, made at our own plant
Guolian produces water-based colloidal silica, alumina sol and silicates for textile mills, paper and coatings makers, refractories and fertilizer formulators. You deal directly with the plant and its coatings research team, with no trading layer in between.
EcoVadisInorganic sols and silicates
Every product is water-based and non-hazardous for transport. TDS, SDS and trial samples are available on request, and every batch ships with a certificate of analysis.
Colloidal silica (silica sol)
Alkaline and acidic grades from 15% to 30% SiO₂, with particle sizes from 3–5 nm up to 80–100 nm. They are used in flocking, wool spinning, paper, coatings, refractories, polishing and investment casting.
Grades and specifications
Specialty sols
Acidic colloidal silica for cationic systems, large-particle silica sol for faster polishing, and positively charged alumina sol.
Grades and specifications
Lithium silicate
Self-curing lithium silicate with a modulus made to order from 2.5 to 4.8, plus a modified binder for water-borne inorganic zinc-rich primers.
Grades and specifications
Potassium silicate
The binder for mineral silicate paints and inorganic coatings, and a partner to colloidal silica and lithium silicate.
Grades and specifications
High-temperature binders
Zero- and low-VOC inorganic binders for heat-resistant, tunnel, wall and Class A fire-retardant coatings.
Grades and specificationsChoose by industry
Refractory & high temperature
Textiles
Wool spinning & anti-pilling
Higher fibre cohesion gives fewer yarn breaks, less fly loss and finer counts.
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Electrostatic flocking
Electro-finishing of flock fibres. We supply a large share of the Changzhou flocking cluster.
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Fabric finishing
An additive in easy-care, non-iron and anti-slip finishes for better-quality garments.
Read morePaper & printing
Paper & board
Transparent anti-slip coatings for liner, boxes and reels, plus microparticle retention aids.
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Inkjet receptive coatings
A cationic emulsion plus alumina sol, for denser, more vivid and longer-lasting prints.
Read moreCoatings & construction
Concrete floor hardener
A silicate densifier (GH8080) for new and old floors: harder, dust-free and less absorbent.
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Anti-fog & anti-condensation
Hydrophilic sol coatings turn fog into a clear water film, on greenhouse films, packaging and glass.
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Inorganic zinc-rich primer
A water-borne lithium silicate binder that protects steel cathodically. Starting ratio: binder : zinc = 3 : 7.
Read moreAgriculture
Application images are industry scenes or AI-generated illustrations, not photographs of our plant or products.
A chemical manufacturer with its own coatings research institute
Guolian has made fine chemicals in Jiangyin since 1980. Inorganic silicon compounds are one of our four core product lines, alongside acrylic emulsions, leather chemicals and polyurethane dispersions. The company runs its own coatings research institute, so questions about your formulation go to the people who developed the product.
What you get as a direct customer
- A TDS, SDS and starting formulation for every grade, and a certificate of analysis (COA) with every batch
- Quality and environmental management certified to ISO 9001:2015 and ISO 14001:2015
- Custom silica sol grades and lithium silicate modulus made to your specification
- Formulation support from our coatings research institute
- Packaging in 25 kg or 140 kg drums, or to your requirement
- A plant rated by EcoVadis for sustainability: Bronze medal, June 2025 (top 35% of rated companies)
Why does colloidal silica gel in a formulation?
The usual causes are pH drift, multivalent salts, impure surfactants or an incompatible resin. Our formulation guide explains each one, with the stability windows our lab works to.
Read the stability guide| SiO₂ particle size | Coating storage, 6 months |
|---|---|
| 5–10 nm | No change |
| 10–15 nm | No change |
| 25 nm | Caking |
| 30 nm | Caking |
Need the full TDS or a trial sample?
Tell us your application and target spec. Our technical team replies within one working day.