Shandong Peak-tech New Material Co., Ltd. is one of the most reliable manufacturers and suppliers of silica sol 20nm in China. With a professional production team, we are able to meet the needs of the majority of our customers. Welcome to buy durable silica sol 20nm for sale here from our factory.
Silica Sol 20 nm Grade Candidates
A "20 nm silica sol" request usually requires confirmation of whether 20 nm is a nominal value, a lower or upper boundary, or part of a distribution. The following published 20–30 nm grades provide different solids levels and stabilization systems.
| Model | Grade Direction | Particle Size | SiO₂ Content | Published Alkali Limit | pH | Shelf Life |
|---|---|---|---|---|---|---|
| HA3020 | Acidic | 20–30 nm | 30±1% | Na₂O ≤0.2% | 2–4 | ≥12 months |
| HC4020 | Standard alkaline | 20–30 nm | 40±1% | Na₂O ≤0.4% | 9.5–10.5 | ≥12 months |
| HC5020 | High-solids alkaline | 20–30 nm | 50±1% | Na₂O ≤0.4% | 9.5–10.5 | ≥12 months |
| AM4020 | Ammonium stabilized | 20–30 nm | 40±1% | Na₂O ≤0.1% | 8–10 | ≥12 months |
These standard grades have published 20–30 nm ranges rather than a guaranteed single-value diameter of exactly 20 nm.
Measurement note: Particle-size results can vary with the instrument, calculation model and sample preparation. Specify the required method, nominal value, distribution and tolerance before requesting an exact 20 nm customization review.
Choose the Chemistry Behind the 20 nm Requirement
HA3020
Provides a 20–30 nm particle band, 30±1% SiO₂ and pH 2–4 for compatible acidic formulations.
HC4020
Provides a 20–30 nm particle band, 40±1% SiO₂ and pH 9.5–10.5 for standard alkaline systems.
HC5020
Provides the highest listed solids content while retaining the 20–30 nm particle range.
AM4020
Combines ammonium stabilization, 40±1% SiO₂, a 20–30 nm particle range and pH 8–10.
Define What "20 nm" Means for Acceptance
A useful quotation requires an agreed particle-size definition and the complete liquid-grade specification.
- Particle value: state whether 20 nm is nominal, average, median, lower limit, upper limit or another reported value.
- Distribution: provide the acceptable size range and any distribution-width requirement.
- Measurement method: identify the instrument, calculation model and sample-preparation method.
- Grade chemistry: select acidic, standard alkaline, high-solids alkaline or ammonium-stabilized direction.
- Physical properties: specify SiO₂ content, pH, density, viscosity and appearance.
- Process compatibility: list other ingredients, dilution water, mixing order, temperature and application tests.
- Order details: include sample quantity, annual demand, packaging and destination country.
Request a 20 nm Silica Sol Sample and Quote
Send the particle-size definition, measurement method, stabilization system, SiO₂ content, pH, impurity limits, application and trial quantity.
Request a 20 nm Grade RecommendationProtect Silica Sol 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. 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 precipitation of silica particles.
Silica Sol 20 nm Purchasing Questions
Which standard grades cover the 20 nm direction?
HA3020, HC4020, HC5020 and AM4020 have published particle-size ranges of 20–30 nm.
Do the listed grades guarantee exactly 20 nm?
No. Their published range is 20–30 nm. An exact nominal target and tolerance require separate specification and measurement-method confirmation.
Why must the particle-size method be specified?
Different instruments, calculation models and sample-preparation procedures can report different particle-size values for the same dispersion.
Which concentrations are available in the listed 20–30 nm grades?
The listed standard options provide 30±1%, 40±1% or 50±1% SiO₂, depending on stabilization chemistry.
How should 20 nm silica sol 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 20 nm Silica Sol
Application performance depends on the full particle-size distribution, stabilization chemistry, solids content, pH and compatibility-not only the nominal 20 nm target.
Precision Polishing
Evaluate removal behavior, surface finish, defect performance and slurry stability using the agreed particle-size method.
Functional Coatings
Test formulation compatibility, film formation, adhesion and surface response with the selected acidic or alkaline grade.
Catalyst Carrier Preparation
Selected grades may be assessed as silica sources or binders under defined impurity, drying and calcination requirements.
Ceramic and Refractory Binders
Evaluate particle packing, penetration, bonding, drying and thermal compatibility under actual process conditions.
Investment Casting
Test slurry stability, wetting, shell build and fired strength before approving a 20–30 nm binder grade.
Custom Nano Formulations
Develop acceptance criteria around nominal size, distribution, measurement method, chemistry and finished-product performance.
