Shandong Peak-tech New Material Co., Ltd. is one of the most reliable manufacturers and suppliers of high purity 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 purity colloidal silica for sale here from our factory.
High Purity Colloidal Silica Grade Comparison
| Model | Particle Size | SiO₂ Content | Metal Ions | pH | Shelf Life |
|---|---|---|---|---|---|
| HP25D10 | 10–20 nm | 25±1% | ＜20 ppm | 7–9 | ≥12 months |
| HP3010 | 10–20 nm | 30±1% | ＜50 ppm | 7–9 | ≥12 months |
| HP2510A | 10–20 nm | 21–25% | ＜50 ppm | 2–4 | ≥12 months |
| HP4010A | 10–20 nm | 38–42% | ＜50 ppm | 2–4 | ≥12 months |
Aluminum present as Al₂O₃ is excluded from the listed metal-ion total. HP25D10 and HP3010 are stabilized with NH₄⁺.
Select by Metal-Ion Limit, Silica Content and pH
HP25D10
The lowest published metal-ion limit, with 25±1% SiO₂, pH 7–9 and NH₄⁺ stabilization.
HP3010
Contains 30±1% SiO₂ with metal ions below 50 ppm and pH 7–9.
HP2510A
Provides 21–25% SiO₂, metal ions below 50 ppm and a standard pH range of 2–4.
HP4010A
Provides 38–42% SiO₂, metal ions below 50 ppm and a standard pH range of 2–4.
Information Needed for Grade Recommendation
The HP grades share a 10–20 nm particle-size range but differ in metal-ion limit, silica concentration, pH and stabilization system.
- Metal-ion limit: specify below 20 ppm or below 50 ppm and provide the required analytical method.
- Silica content: confirm the required standard concentration or range.
- pH: select the compatible 7–9 or 2–4 grade range.
- Stabilization: confirm whether an NH₄⁺-stabilized grade is required.
- Aluminum reporting: confirm acceptance of the stated Al₂O₃ exclusion from the metal-ion total.
- Order details: include trial quantity, annual demand, packaging, certificate requirements and destination country.
Request a High Purity Grade Sample and Quote
Send the metal-ion limit, SiO₂ content, pH, stabilization requirement, test method, trial quantity, annual demand 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 Purity Colloidal Silica Purchasing Questions
Which high purity colloidal silica grades are available?
The published grades are HP25D10, HP3010, HP2510A and HP4010A.
Which grade has the lowest metal-ion limit?
HP25D10 is listed with metal ions below 20 ppm. The other three grades are listed below 50 ppm.
Which grades are stabilized with ammonium?
HP25D10 and HP3010 are identified as NH₄⁺-stabilized grades.
Is aluminum included in the listed metal-ion total?
No. The reference specification states that aluminum present as Al₂O₃ is not counted in the metal-ion total.
How should high purity 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 Purity Colloidal Silica
High purity colloidal silica can be evaluated where controlled metal-ion content is an important purchasing requirement. Confirm the analytical method, impurity limits and process compatibility before bulk use.
Electronic Materials
Evaluated in compatible material systems requiring controlled metal-ion content and nanoscale silica particles.
Precision Polishing
Suitable for polishing trials where silica purity, particle size and formulation pH require close control.
Catalyst Preparation
Can be assessed as a high-purity silica source or binder in compatible catalyst processes.
Specialty Coatings
Used in coating development requiring controlled impurity levels and selectable acidic or near-neutral pH.
High-Purity Ceramic Materials
Evaluated as an inorganic silica component where metal-ion limits form part of the material specification.
Functional Inorganic Materials
Supports development projects requiring high-purity silica with defined solids content and pH.
