Shandong Peak-tech New Material Co., Ltd. is one of the most reliable manufacturers and suppliers of colloidal silica 40% in China. With a professional production team, we are able to meet the needs of the majority of our customers. Welcome to buy durable colloidal silica 40% for sale here from our factory.
Colloidal Silica 40% Grade Options
Peak-tech supplies several approximately 40 wt% SiO₂ dispersions with standard alkaline, ammonium-stabilized and acidic low-sodium chemistry. A 40% concentration delivers more silica per unit mass than lower-solids grades, but particle size, pH, impurity limits, viscosity and compatibility still determine the correct product.
| Model | Grade Direction | SiO₂ | Particle Size | Na₂O Limit | pH | Shelf Life |
|---|---|---|---|---|---|---|
| HC4010 | Standard alkaline | 40±1% | 10–15 nm | ≤0.4% | 9.5–10.5 | ≥12 months |
| HC4020 | Standard alkaline | 40±1% | 20–30 nm | ≤0.4% | 9.5–10.5 | ≥12 months |
| AM4010 | Ammonium stabilized | 40±1% | 10–15 nm | ≤0.1% | 8–10 | ≥12 months |
| AM4020 | Ammonium stabilized | 40±1% | 20–30 nm | ≤0.1% | 8–10 | ≥12 months |
| HP4010A | Acidic low sodium | 38–40% | 10–20 nm | ≤0.01% | 2–4 | ≥12 months |
The 40% label describes supplied silica concentration, not interchangeability. Confirm the current TDS, analytical methods and batch CoA before purchase.
Choose 40% Colloidal Silica by Chemistry
Standard Alkaline Grades
HC4010 and HC4020 provide 40±1% SiO₂ with two particle-size bands and pH 9.5–10.5 for compatible alkaline systems.
Ammonium-Stabilized Grades
AM4010 and AM4020 provide 40±1% SiO₂, pH 8–10 and a lower published sodium limit than the standard alkaline grades.
Acidic Low-Sodium Direction
HP4010A provides 38–40% SiO₂, pH 2–4 and a published Na₂O limit of ≤0.01% for compatible low-sodium applications.
More SiO₂ per Unit Mass
At nominal concentration, 100 kg of 40% colloidal silica delivers about 40 kg of SiO₂; actual calculation should use the batch CoA.
Information Needed for a 40% Grade Recommendation
- Stabilization: specify standard alkaline, ammonium-stabilized or acidic low-sodium chemistry.
- Particle size: select 10–15 nm, 10–20 nm or 20–30 nm according to the target function.
- Impurity limits: provide sodium and other element-specific limits with required analytical methods.
- Water balance: define target dry-silica dose, allowed formulation water and any planned dilution.
- Compatibility: list binders, salts, pigments, acids, catalysts, surfactants and process-water quality.
- Handling: include pump, hose, filtration, mixing order, shear, temperature and storage duration.
- Order details: provide sample quantity, annual demand, packaging, documents and destination country.
Request a Colloidal Silica 40% Sample
Send the stabilization direction, particle size, pH, sodium limit, application, process conditions, packaging and trial quantity.
Request a 40% Grade RecommendationProtect High-Solids Colloidal Stability
Controlled Dilution
Use compatible water and a validated addition sequence. Hardness, salts or local pH shock may destabilize concentrated silica sol.
Pumping and Mixing
Verify viscosity, pump type, flowmeter, filtration and mixing conditions with the selected grade and operating temperature.
Packaging Options
Available polyethylene packaging sizes are 25 kg, 250 kg and 1000 kg, subject to order confirmation.
Storage Conditions
Store at 0–40°C where specified, prevent freezing and direct sunlight, and keep containers securely closed.
Colloidal Silica 40% Questions
What does colloidal silica 40% mean?
It means the supplied liquid contains approximately 40 wt% SiO₂ solids according to the specified test method. It does not define particle size, pH or stabilizer.
Which 40% colloidal silica models are available?
Published options include HC4010, HC4020, AM4010, AM4020 and acidic low-sodium HP4010A.
How much SiO₂ is delivered by 1000 kg of 40% sol?
A nominal 1000 kg load at 40% contains about 400 kg of SiO₂. Use the actual net weight and batch CoA for precise calculation.
Can 40% colloidal silica be diluted?
Yes, using compatible water and a validated process. Water hardness, salts, pH and addition sequence can affect stability.
Are the 40% grades interchangeable?
No. The models differ in particle size, pH, stabilizing chemistry and sodium limit, which can change formulation behavior.
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Colloidal Silica 40% Application Trials
High solids can reduce supplied water, but chemistry, particle size and impurity requirements must still match the application.
Industrial Coatings
Evaluate high silica delivery, film reinforcement, viscosity, dilution and binder compatibility.
Refractory Binders
Use concentrated inorganic binder where mix water, drying and thermal performance are controlled.
Catalyst Systems
Screen standard, ammonium or low-sodium chemistry against catalyst and calcination requirements.
Paper and Textile
Reduce shipped water while validating dilution, charge compatibility, metering and process stability.
Cement and Concrete
Deliver concentrated nano silica into densifier or cementitious formulations after compatibility testing.
Custom Formulations
Balance solids, particle size, pH, impurity limits and packaging for qualified industrial processes.
