Shandong Peak-tech New Material Co., Ltd. is one of the most reliable manufacturers and suppliers of acidic 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 acidic colloidal silica for sale here from our factory.
Acidic Colloidal Silica Grade Comparison
| Model | Particle Size | SiO₂ Content | Na₂O Content | pH | Shelf Life |
|---|---|---|---|---|---|
| HA2005 | 7–10 nm | 20±1% | ≤0.2% | 2–4 | ≥12 months |
| HA3010 | 10–15 nm | 30±1% | ≤0.2% | 2–4 | ≥12 months |
| HA3510 | 10–15 nm | 35±1% | ≤0.2% | 2–4 | ≥12 months |
| HA3020 | 20–30 nm | 30±1% | ≤0.2% | 2–4 | ≥12 months |
| HP2510A | 10–20 nm | 21–25% | ≤0.01% | 2–4 | ≥12 months |
| HP4010A | 10–20 nm | 38–40% | ≤0.01% | 2–4 | ≥12 months |
HP2510A and HP4010A are low-metal grades. Final specification limits should be confirmed before sampling or ordering.
Select by Solids, Particle Size and Metal-Ion Limit
HA2005
Fine-particle grade with 20±1% SiO₂ for processes requiring lower solids and a smaller particle range.
HA3010 and HA3510
Two solids options at 30±1% and 35±1% while retaining the same published particle-size range.
HA3020
Larger-particle HA grade with 30±1% SiO₂ for application trials requiring a different surface-area profile.
HP2510A and HP4010A
Low-metal options with either 21–25% or 38–40% SiO₂ for processes with tighter impurity requirements.
Information Needed for a Grade Recommendation
All six grades are supplied at pH 2–4, but they differ in particle size, silica concentration and sodium limit. Confirm these values together with the required quality limits before ordering.
- Solids requirement: state the required SiO₂ content in the supplied grade.
- Particle size: specify the target particle-size range.
- Metal-ion limit: confirm whether a standard HA grade or low-metal HP grade is required.
- Required pH: confirm that the specified pH range of 2–4 is acceptable.
- Order details: provide the trial quantity, annual demand and preferred packaging.
- Quality limits: include the inspection method and acceptance criteria used for qualification.
Request a Grade Recommendation and Sample
Send the target particle size, SiO₂ content, sodium limit, trial quantity, annual demand, preferred packaging and destination country.
Request a Sample & QuoteProtect the Dispersion 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 gelation and product failure.
Direct Sunlight
Avoid prolonged exposure to direct sunlight during storage and transport.
Container Closure
Keep containers closed to limit water evaporation and precipitation of solid silica particles.
Acidic Colloidal Silica Purchasing Questions
Which acidic colloidal silica grades have the lowest sodium content?
HP2510A and HP4010A have published Na₂O limits of ≤0.01%, compared with ≤0.2% for the four HA grades.
What pH range applies to the acidic silica sol grades?
HA2005, HA3010, HA3510, HA3020, HP2510A and HP4010A are all listed at pH 2–4.
How do HA3010 and HA3510 differ?
Both have a particle-size range of 10–15 nm, while their SiO₂ contents are 30±1% and 35±1% respectively.
What packaging sizes are available?
The listed polyethylene packaging options are 25 kg, 250 kg and 1000 kg.
How should acidic colloidal silica be stored?
Store it at 0–40°C, prevent freezing and direct sunlight, and keep the container closed to limit evaporation and silica precipitation.
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Applications of Acidic Colloidal Silica
Acidic colloidal silica grades can be selected according to particle size, silica concentration and sodium-content requirements. Compatibility should be evaluated under the actual formulation and processing conditions before bulk use.
Catalyst Carriers
Used as a nanoscale silica component or inorganic binder in selected catalyst-carrier preparation processes.
Metal Surface Treatment
Suitable for acidic metal-treatment formulations requiring controlled silica particles and defined sodium limits.
Specialty Coatings
Evaluated in coating systems requiring acidic pH, nanoscale silica particles and selectable solids content.
Ceramic Composites
Used as an inorganic silica binder or functional nano-silica component in compatible ceramic formulations.
Precision Casting
Applicable to selected casting-binder systems that require acidic silica dispersions with controlled particle characteristics.
Refractory Materials
Evaluated as a silica-based binder in refractory formulations where acidic conditions meet the process requirements.
