Shandong Peak-tech New Material Co., Ltd. is one of the most reliable manufacturers and suppliers of food grade 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 food grade colloidal silica for sale here from our factory.
Food Grade Colloidal Silica Qualification Candidates
The following high-purity grades can be reviewed as technical candidates when a project involves a regulated food-use or food-contact requirement. Final suitability depends on the intended use, market-specific rules, impurity limits, test methods and required documentation.
| 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 published total metal-ion value. HP25D10 and HP3010 are stabilized with NH₄⁺.
Compliance notice: These HP grades are high-purity technical candidates only. Available source data does not establish food-additive, food-contact or regulatory approval. Do not describe or use a grade as food grade until the intended use, destination market, applicable standard, impurity limits and supporting documents are confirmed.
Compare High-Purity Grades Before Qualification
HP25D10
Provides 25±1% SiO₂, a published total metal-ion value below 20 ppm, pH 7–9 and NH₄⁺ stabilization.
HP3010
Provides 30±1% SiO₂, published total metal ions below 50 ppm, pH 7–9 and NH₄⁺ stabilization.
HP2510A
Provides 21–25% SiO₂, published total metal ions below 50 ppm and a pH range of 2–4.
HP4010A
Provides 38–42% SiO₂, published total metal ions below 50 ppm and a pH range of 2–4.
Information Required for a Food-Use Review
A technical parameter table alone cannot determine regulatory suitability. Please define the complete use case and documentation package before requesting a recommendation.
- Intended use: identify direct food additive, processing aid, food-contact coating or packaging, food-equipment surface system, or another application.
- Destination market: state the country or region and the specific regulation, standard or customer specification that applies.
- Material identity: confirm the required chemical identity, physical form, concentration, pH and stabilization system.
- Impurity requirements: provide element-specific limits, especially heavy-metal limits, together with the required analytical methods.
- Supporting documents: list required composition, analytical, microbiological, manufacturing, allergen, GMO, animal-origin, traceability and change-control declarations.
- Commercial details: include packaging, trial quantity, annual demand and destination country.
Request Food-Use Qualification Review
Send the intended use, destination market, applicable regulation, impurity limits, analytical methods, required documents, trial quantity and delivery destination for a case-by-case review.
Submit Qualification RequirementsProtect Colloidal Stability During Storage
Packaging Options
Published polyethylene packaging sizes are 25 kg, 250 kg and 1000 kg. Confirm packaging suitability for the intended regulated use.
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.
Food Grade Colloidal Silica Qualification Questions
Are the listed products certified food grade?
Food-grade certification or approval is not established by the current source data. The HP grades are technical candidates that require separate regulatory and documentation review for the intended use and market.
Can the HP parameter table alone prove food compliance?
No. Particle size, SiO₂ content, total metal ions and pH do not replace a market-specific compliance assessment, element-specific impurity testing or the required supporting documents.
Which limits and documents are needed for qualification?
Requirements depend on the use and destination market. Buyers should provide the applicable regulation, element-specific impurity limits, analytical methods and any required composition, microbiological, manufacturing, allergen, GMO, animal-origin, traceability and change-control documents.
What is the difference between food-additive and food-contact use?
A food additive is intentionally used in food, while a food-contact application involves materials or equipment that may contact food. The regulatory route, permitted conditions and documentation can differ, so the intended use must be stated clearly.
How should a qualification sample be stored?
Store it at 0–40°C, prevent freezing and direct sunlight, and keep the container closed. Confirm any additional handling controls required by the qualification protocol.
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Food-Related Colloidal Silica Evaluation Areas
The following areas are potential qualification scenarios only. Every project is subject to regulatory approval, application-specific testing and confirmation of the required compliance documentation before use.
Food-Contact Coatings
Technical evaluation in compatible coating systems, subject to food-contact regulations, migration requirements and end-use qualification.
Food-Contact Packaging Materials
Candidate assessment for packaging material systems where composition, extractables and market-specific compliance must be confirmed.
Processing-Aid Evaluation
Process trials may be considered only after the intended function, residual presence, impurity limits and regulatory status are reviewed.
Filtration or Clarification Process Trials
Evaluation for compatible processing systems requires confirmation of product-contact conditions, removal steps and applicable regulations.
Food-Equipment Surface Systems
Candidate use in compatible equipment coating or surface systems is subject to food-contact rules and operating-condition validation.
Custom Regulated Applications
Other regulated projects can be reviewed case by case using the intended use, destination market, impurity limits and documentation checklist.
