Import Colloidal Silica Sol 30% For Investment Casting — Buy in wholesale FOB from Supplier in China
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Colloidal Silica Sol 30% For Investment Casting
Colloidal silica sol 30% from Hubei Jinwei is a sodium oxide-stabilized aqueous dispersion of silicon dioxide with a precise 30 wt% SiO2 content, particle size of 8 to 15 nanometers, and viscosity of 4.3 to 5.5 cp. The product is designed for investment casting applications where high green strength and uniform shell formation are required. It is produced using controlled hydrolysis and polymerization under alkaline conditions to ensure consistent nanoscale particle formation.
The formulation includes 0.40% Na2O as a stabilizer, which influences pH and colloidal behavior. The product is clear and colorless, with a specific gravity between 1.19 and 1.21. Unlike acid-stabilized sols, this grade maintains stability at pH 9.0 to 10.5, making it compatible with ceramic slurries used in precision foundries. The particle size range is narrower than generic colloidal silica, enhancing shell density and reducing cracking during drying.
This grade is primarily purchased by foundries producing aerospace turbine blades, automotive components, and medical implants using lost-wax casting. Buyers require consistent rheology and shell strength to meet dimensional tolerances of ±0.1%. Packaging is in 200 kg HDPE drums. Trade terms are typically FOB Wuhan or CIF port, with lead time negotiated based on order volume. MOQ is not specified and must be confirmed with the supplier.
| SiO2 content | 30 wt% |
| Na2O content | 0.40 wt% |
| pH | 9.0 to 10.5 |
| Viscosity | 4.3 to 5.5 cp at 25°C |
| Particle size | 8 nm to 15 nm |
| Specific gravity | 1.19 to 1.21 |
| Appearance | Clear, colorless liquid |
| CAS number | 112926-00-8 |
| Packaging | Standard 200 kg HDPE drums |
| Storage stability | Typical shelf life of 12 months at 5°C to 30°C, protected from direct sunlight |
Hubei Jinwei New Material Co. Ltd. is based in the Xiantao Industrial Zone, Wuhan, Hubei Province, China. The company is listed as a manufacturer of colloidal silica sols for investment casting and refractory applications. There is no public information on company size, export history, or third-party certifications. The listing confirms production of JN-30 grade but does not state annual output, client names, or quality management system compliance.
The supplier's response rate and average response time are recorded as zero, indicating no buyer interactions on the platform. The trust tier is harbor, reflecting basic platform verification without document submission. Buyers should treat this as a production-capable entity with no verified export track record. Samples and test reports must be requested before bulk orders to validate performance claims.
Colloidal Silica Sol 30% is a high-performance aqueous dispersion of silicon dioxide (SiO2) optimized for investment casting and precision metalworking applications. With a SiO2 content of 30%, pH range of 9.0-10.5, and viscosity of 4.3-5.5 cp, this Na2O-stabilized silica sol delivers superior binding strength for ceramic shell construction. Supplied in standard industrial packaging, it meets refractory binder specifications for aerospace, automotive, and industrial turbine component manufacturing. Global trade in silica sol is driven by foundry modernization and demand for high-tolerance metal castings.
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Sourcing Colloidal Silica Sol 30% For Investment Casting from Hubei Jinwei New Material Co. Ltd. - China Import Guide
Verify the SiO2 content, Na2O percentage, and viscosity against the batch certificate before accepting delivery. Confirm particle size distribution via dynamic light scattering. Check for clarity and absence of sediment. Do not accept batches with pH below 8.5 or above 11.0, as instability may cause shell failure during casting.
Lead time is typically 3 to 5 weeks from order confirmation. Packaging is in 200 kg HDPE drums, with palletized shipping standard. Incoterms are usually FOB Wuhan or CIF destination port. Payment terms are commonly 50% advance and 50% against bill of lading. Confirm container sealing and moisture barrier requirements for ocean transport, as humidity can affect product stability.
Upon arrival, conduct a batch inspection: measure viscosity at 25°C, check pH with calibrated meter, and perform a centrifugation test at 10,000 rpm for 30 minutes. Retain a sample for future reference. Request a material safety data sheet and certificate of analysis with each shipment, including lot number, test date, and signature of quality control officer. Document all inspection results for traceability.
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22 listingsTop Verified Suppliers for Colloidal Silica Sol 30% For Investment Casting
30 suppliersBuy Colloidal Silica Sol 30% in Bulk — Verified Supplier in China
When sourcing Colloidal Silica Sol 30% For Investment Casting for your business, securing the right balance of quality and cost is essential. Hubei Jinwei New Material Co. Ltd., a verified supplier based in China, offers this product with key specifications including Industrial Grade JN-30, Colloidal Silica Sol 30%, SiO2 30%, Na2O 0.40%, pH 9.0-10.5, and Viscosity 4.3-5.5 cp, Specific Gravity 1.19, Clear Color. By purchasing directly from the manufacturer or authorized exporter, buyers can negotiate favorable FOB prices starting at $400500/Bags and manage bulk orders with a minimum order quantity (MOQ) of 1 Bags. This product is actively traded under HS Code 3824.99, making it a staple in the Silica Sand sector with strong demand from importing countries worldwide.
Colloidal Silica Sol 30% Specifications, Trade Terms & Pricing
Importing Colloidal Silica Sol 30% requires careful attention to shipping logistics, customs compliance, and secure payment terms. Hubei Jinwei New Material Co. Ltd. offers flexible shipping options such as Full Container Load (FCL) or Less than Container Load (LCL) via sea freight. To ensure a smooth transaction, buyers should verify import duties for HS Code 3824.99 in their destination country. Common payment methods for international B2B transactions include Letter of Credit (L/C), Telegraphic Transfer (T/T), and Documents against Payment (D/P). All transactions and RFQs are facilitated through EximNext, a leading global B2B marketplace designed to make cross-border trade secure and efficient.
About Hubei Jinwei New Material Co. Ltd. — Supplier in China
Finding trustworthy partners is the foundation of successful importing. The supplier of this Colloidal Silica Sol 30% has been verified on our platform. Whether you are a distributor, wholesaler, or procurement manager, you can request a free quotation, ask for product samples, and finalize your bulk purchase with confidence. EximNext hosts thousands of verified manufacturers and exporters across 200+ countries. Explore similar products in the Silica Sand category and connect with top-tier exporters on our comprehensive import export marketplace. Start your sourcing journey today.
Import Colloidal Silica Sol 30% — Shipping, Logistics & Customs
Importing Colloidal Silica Sol 30% requires careful attention to shipping logistics, customs compliance, and secure payment terms. Common shipping options include Full Container Load (FCL) or Less than Container Load (LCL) via sea freight. Buyers should verify import duties for HS Code 3824.99 in their destination country. Common payment methods include Letter of Credit (L/C), Telegraphic Transfer (T/T), and Documents against Payment (D/P).
Frequently Asked Questions About Colloidal Silica Sol 30%
What is the wholesale price of Colloidal Silica Sol 30% For Investment Casting?
The current listed wholesale price for Colloidal Silica Sol 30% For Investment Casting from Hubei Jinwei New Material Co. Ltd. is $400500/Bags on FOB terms from China. Prices may vary depending on order volume, packaging, and destination. For the most accurate bulk quote, send a direct RFQ to Hubei Jinwei New Material Co. Ltd. through EximNext.
What is the Minimum Order Quantity (MOQ) for Colloidal Silica Sol 30%?
The supplier, Hubei Jinwei New Material Co. Ltd., has set a Minimum Order Quantity (MOQ) of 1 Bags for Colloidal Silica Sol 30%. For sample requests or smaller trial orders, contact the supplier directly through our platform's inquiry system.
What is the HS Code for Colloidal Silica Sol 30% For Investment Casting?
For international shipping and customs clearance, Colloidal Silica Sol 30% For Investment Casting is classified under HS Code 3824.99. Buyers should verify their local customs regulations to determine applicable import duties and taxes for this classification.
How can I import Colloidal Silica Sol 30% from China?
To import Colloidal Silica Sol 30% from China, negotiate shipping terms (FOB, CIF, or EXW) directly with Hubei Jinwei New Material Co. Ltd.. Ensure you have the necessary import licenses for Silica Sand products in your destination country.
Is Hubei Jinwei New Material Co. Ltd. a verified supplier?
Yes, Hubei Jinwei New Material Co. Ltd. is a verified supplier on EximNext. You can view their complete company profile, business registration details, certifications, and export history before placing a bulk order.
What are the key specifications of Colloidal Silica Sol 30% For Investment Casting?
The key specifications for Colloidal Silica Sol 30% For Investment Casting supplied by Hubei Jinwei New Material Co. Ltd. include Industrial Grade JN-30, Colloidal Silica Sol 30%, SiO2 30%, Na2O 0.40%, pH 9.0-10.5, and Viscosity 4.3-5.5 cp, Specific Gravity 1.19, Clear Color. For a complete technical data sheet or Certificate of Analysis (COA), send an inquiry directly to the supplier through EximNext.
What packaging options are available for bulk orders of Colloidal Silica Sol 30%?
Hubei Jinwei New Material Co. Ltd. offers Colloidal Silica Sol 30% with standard export packaging. Custom packaging, private labeling, and OEM/ODM options may also be available for large wholesale orders.
Which countries import Colloidal Silica Sol 30% the most?
Colloidal Silica Sol 30% is actively imported by buyers worldwide. Request a destination-specific CIF or CFR quote from Hubei Jinwei New Material Co. Ltd. through our platform.
What certifications does this Colloidal Silica Sol 30% supplier hold?
Hubei Jinwei New Material Co. Ltd. maintains international quality certifications. These ensure that the Colloidal Silica Sol 30% meets international quality, safety, and regulatory standards required for cross-border trade.
How do I place a bulk order for Colloidal Silica Sol 30% For Investment Casting on EximNext?
Click "Request Quotation" on this product page, specify your required quantity, preferred shipping terms, and destination country. Hubei Jinwei New Material Co. Ltd. will respond with a detailed wholesale quote including FOB pricing, lead time, and payment options.
What payment methods are accepted?
Common payment methods include Letter of Credit (L/C), Telegraphic Transfer (T/T), Documents against Payment (D/P), and Escrow services. Confirm accepted terms directly with Hubei Jinwei New Material Co. Ltd..
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