Shandong Peak-tech New Material Co., Ltd. is one of the most reliable manufacturers and suppliers of colloidal silica 40% solids 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% solids for sale here from our factory.
Colloidal Silica 40% Solids Grade Comparison
Peak-tech supplies several approximately 40% SiO₂ dispersions with different stabilization systems, particle sizes, pH ranges and impurity limits. Select the chemistry as well as the solids level.
| Model | Grade Direction | Particle Size | SiO₂ Content | Published Alkali Limit | pH | Shelf Life |
|---|---|---|---|---|---|---|
| HC4010 | Standard alkaline | 10–15 nm | 40±1% | Na₂O ≤0.4% | 9.5–10.5 | ≥12 months |
| HC4020 | Standard alkaline | 20–30 nm | 40±1% | Na₂O ≤0.4% | 9.5–10.5 | ≥12 months |
| AM4010 | Ammonium stabilized | 10–15 nm | 40±1% | Na₂O ≤0.1% | 8–10 | ≥12 months |
| AM4020 | Ammonium stabilized | 20–30 nm | 40±1% | Na₂O ≤0.1% | 8–10 | ≥12 months |
| HP4010A | Acidic low sodium | 10–20 nm | 38–40% | Na₂O ≤0.01% | 2–4 | ≥12 months |
"40% solids" describes the supplied silica concentration, not a single interchangeable product. Confirm stabilizer, pH, particle size, impurity limits and analytical methods before sampling.
Choose the 40% Grade by Chemistry and Particle Size
HC4010 and HC4020
Provide 40±1% SiO₂ and pH 9.5–10.5 with either 10–15 nm or 20–30 nm particles.
AM4010 and AM4020
Provide 40±1% SiO₂ and pH 8–10 with two particle-size bands and a published Na₂O limit of ≤0.1%.
HP4010A
Provides 38–40% SiO₂, 10–20 nm particles, pH 2–4 and a published Na₂O limit of ≤0.01%.
Water Reduction vs. Handling
Higher supplied solids can reduce added water, but viscosity, pumping, dilution and mixing stability still require process testing.
Information Needed for a 40% Solids Recommendation
Do not select by concentration alone. The correct grade must match the formulation chemistry, impurity requirements and processing conditions.
- Stabilization direction: specify standard alkaline, ammonium stabilized or acidic low-sodium.
- Particle size: select 10–15 nm, 10–20 nm, 20–30 nm or provide a target and measurement method.
- Impurity limits: state the permitted sodium and other element-specific limits.
- Process conditions: provide dilution ratio, mixing order, shear, temperature, pumping and drying or curing conditions.
- Compatibility: list binders, salts, acids, pigments, catalysts, surfactants and process water.
- Acceptance tests: define storage stability, viscosity, bonding, coating, polishing or finished-product criteria.
- Order details: include sample quantity, annual demand, packaging and destination country.
Request a 40% Colloidal Silica Sample and Quote
Send the stabilization direction, particle size, pH, impurity limits, application conditions, trial quantity and annual demand.
Request a 40% Solids Grade RecommendationProtect Concentrated Sol Stability
Packaging Options
Available polyethylene packaging sizes are 25 kg, 250 kg and 1000 kg.
Storage Temperature
Store at 0–40°C and protect from freezing. Freezing can cause irreversible gelation.
Direct Sunlight
Avoid prolonged exposure to direct sunlight during storage and transportation.
Container Closure
Keep containers closed to limit water evaporation, contamination and further concentration at the surface.
Colloidal Silica 40% Solids Purchasing Questions
Which 40% colloidal silica grades are listed?
The listed options are HC4010, HC4020, AM4010, AM4020 and the acidic low-sodium HP4010A grade.
Are all 40% solids grades interchangeable?
No. They differ in stabilization chemistry, pH, particle size and impurity limits, all of which can affect formulation stability and performance.
Which option has the lowest published sodium limit?
HP4010A has a published Na₂O limit of ≤0.01% and operates at pH 2–4. Confirm that its acidic chemistry is compatible with the application.
Does higher solids content always improve the process?
No. Higher supplied solids may reduce added water, but handling, viscosity, dilution, mixing and storage stability must be evaluated in the actual process.
How should 40% colloidal silica be stored?
Store it at 0–40°C, prevent freezing and direct sunlight, and keep the container securely closed.
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Applications of Colloidal Silica with 40% Solids
A 40% supplied concentration may reduce added water or increase silica delivered per unit volume, but the grade must still match the required pH, stabilizer, particle size and process conditions.
Inorganic Binder Systems
Evaluate concentrated sols for bonding, penetration, drying and inorganic network formation in compatible formulations.
Specialty Coatings
Test formulation stability, application viscosity, film formation, adhesion and surface performance with the selected chemistry.
Ceramic and Refractory Materials
Selected grades may be assessed as concentrated binders or silica components under actual drying and thermal conditions.
Investment Casting
Evaluate slurry stability, wetting, shell build, drying and fired strength before adopting a concentrated binder grade.
Catalyst and Carrier Preparation
Ammonium or low-sodium options can be tested where solids loading and impurity control are both important.
Custom High-Solids Formulations
Qualification can be built around water reduction, pumping, dilution, stability and finished-product acceptance requirements.
