Shandong Peak-tech New Material Co., Ltd. is one of the most reliable manufacturers and suppliers of high concentration colloidal silica in China. With a professional production team, we are able to meet the needs of the majority of our customers. Welcome to buy durable high concentration colloidal silica for sale here from our factory.
High Concentration Colloidal Silica Grade Comparison
| Model | Particle Size | SiO₂ Content | Na₂O Content | pH | Shelf Life |
|---|---|---|---|---|---|
| HC4010 | 10–15 nm | 40±1% | ≤0.4% | 9.5–10.5 | ≥12 months |
| HC4020 | 20–30 nm | 40±1% | ≤0.4% | 9.5–10.5 | ≥12 months |
| HC5020 | 20–30 nm | 50±1% | ≤0.4% | 9.5–10.5 | ≥12 months |
Particle size is customizable. Confirm the target size, silica concentration and final specification limits before sampling or ordering.
Select by Solids Content and Particle Size
HC4010
High-concentration grade with a standard particle-size range of 10–15 nm.
HC4020
Shares the HC4010 silica concentration with a larger standard particle-size range of 20–30 nm.
HC5020
The highest published silica concentration in the HC series, with 20–30 nm particles.
Particle Size
A customized particle-size target can be reviewed after the required value, tolerance and order conditions are provided.
Information Needed for Grade Recommendation
The HC grades provide 40% and 50% silica concentrations with two standard particle-size ranges. Confirm the required balance before selecting a grade.
- Silica content: specify 40±1% or 50±1% SiO₂.
- Particle size: select 10–15 nm, 20–30 nm or provide a customized target.
- Sodium limit: confirm that Na₂O ≤0.4% meets the purchasing specification.
- Required pH: confirm compatibility with the standard pH range of 9.5–10.5.
- Quality requirements: provide the test method, certificate requirements and acceptance limits.
- Order details: include trial quantity, annual demand, packaging and destination country.
Request an HC Grade Sample and Quote
Send the target SiO₂ content, particle size, sodium limit, trial quantity, annual demand, preferred packaging and destination country.
Request a Grade RecommendationProtect Product Stability During Storage
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. Temperatures below 0°C 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 and precipitation of solid silica particles.
High Concentration Colloidal Silica Purchasing Questions
Which high concentration colloidal silica grades are available?
The standard grades are HC4010, HC4020 and HC5020.
Which grade has the highest silica content?
HC5020 contains 50±1% SiO₂. HC4010 and HC4020 contain 40±1% SiO₂.
Can the particle size be customized?
Yes. Particle size is identified as customizable and should be confirmed before sampling.
What packaging sizes are available?
The listed polyethylene packaging options are 25 kg, 250 kg and 1000 kg.
How should high concentration colloidal silica be stored?
Store it at 0–40°C, prevent freezing and direct sunlight, and keep the container closed.
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Applications of High Concentration Colloidal Silica
High concentration colloidal silica can be evaluated where higher silica solids may reduce added water or increase the available inorganic silica per unit of dispersion. Confirm viscosity, stability and compatibility under actual processing conditions.
Inorganic Binder Systems
Evaluated where higher silica concentration is preferred in a compatible aqueous binder formulation.
Specialty Coatings
Suitable for coating trials requiring 40% or 50% silica solids and controlled nanoscale particles.
Ceramic Materials
Can be assessed as a concentrated silica component or inorganic binder in compatible ceramic systems.
Refractory Formulations
Evaluated in refractory binder systems after solids content, particle size and processing stability are verified.
Precision Casting
Suitable for shell-binder trials where concentrated silica dispersions match the required process conditions.
Functional Material Formulations
Supports development projects requiring higher silica loading or a customized particle-size target.
