Precipitated Silica Powder for Rubber Reinforcement, Basisil-PPT185, 180 m²/g
Buyer-facing sourcing candidate for precipitated silica powder used as a reinforcing filler in rubber applications. Key verification points include CAS alignment, SiO2 content, BET specific surface area around 180 m²/g, DBP absorption, moisture, loss on drying, particle form, packaging size, export documentation, and batch COA availability.
Quick buying facts
Identify the grade, package, and import market before comparing suppliers.
Use this page to check the product identity, common specification points, document scope, package notes, and destination-market questions before sending a China sourcing request.
CAS numbers shown on source page: 7631-86-9 and 112926-00-8Rubber reinforcing filler / precipitated silica powderCandidate - verify CAS, grade specification, COA, SDS, and export documents before RFQ award
CAS numbers shown on source page: 7631-86-9 and 112926-00-8
CAS number shown in raw title: 10279-57-9; buyer should confirm correct CAS on COA, SDS, invoice, and customs documents
EINECS: 231-545-4 listed on source page
Specific surface area: 180 m²/g listed
SiO2 content: ≥97% listed
DBP oil absorption: 2.55 mL/g listed
Application grade: Rubber reinforcing filler for tires, shoe soles, hoses, belts, seals, cables, mechanical rubber goods, and latex-related rubber products
Comparable positioning stated by supplier: counter type to Ultrasil VN 3; equivalency should be confirmed by buyer testing
Who uses this page
Target buyers
Rubber compounders
Tire and tread compound manufacturers
Footwear sole manufacturers
Industrial rubber goods producers
Rubber hose and belt manufacturers
Cable compound manufacturers
Chemical distributors serving rubber additives and fillers
Procurement teams seeking China-origin precipitated silica alternatives
Before matching
Documents to check
CAS number, grade, assay, and impurity profile
SDS, COA, TDS, HS code, and transport classification
Destination-market import documents before supplier matching
Package and route
Packing notes
Listed packing: 20 kg PP woven bag
Other listed packing options: 380 kg bag and 625 kg bag
Source page lists package gross weight around 20.2 kg for 20 kg pack
Supplier states loading can be without pallets or with pallets; confirm pallet type, fumigation status, and container loading quantity
Confirm inner liner, moisture barrier, bag sealing, label language, batch number display, and export mark requirements before PO
For bulk RFQs, request photos of original bags, palletized cargo, and container loading plan
Applications and sourcing options
Check whether this product fits the buyer's actual application.
Clear application, grade, package, and document notes help separate real sourcing demand from a vague price check.
Use context
Common applications
Reinforcing filler qualification for rubber compounds
Supplier comparison against established precipitated silica grades
Trial lots for tire, shoe sole, hose, belt, seal, and mechanical rubber goods formulations
Distributor stock item for rubber auxiliary materials
Cost-down or dual-sourcing project where batch consistency and documentation are required
How we compare
Sourcing options
Request sample with COA and SDS before bulk order
Start with 20 kg bag trial order for formulation screening
Evaluate 380 kg or 625 kg bulk bag options for plant-scale trials
Request third-party pre-shipment inspection for first bulk purchase
Set annual contract supply with agreed specification limits and batch documentation
Ask supplier for container loading plan with or without pallets
Human review
Compliance notes
Request latest COA matching the exact batch and grade Basisil-PPT185
Request SDS in buyer-required language and confirm GHS classification, transport classification, and any dust-related occupational exposure information
Confirm correct CAS number before customs filing because the source title and product details show different CAS identifiers
Confirm REACH certificate or registration coverage if importing into the EU; supplier page states REACH certification but documentation should be reviewed
Confirm HS code 281122 or buyer-country classification with customs broker
Confirm whether product is non-DG for sea/air transport based on the latest SDS; do not rely only on marketplace page descriptions
Request export invoice, packing list, COA, SDS, certificate of origin, and any buyer-specific compliance declarations
Confirm limits or test results for moisture, loss on drying, pH, soluble salts, heavy metals, sieve residue, and ignition loss if required by downstream rubber formulation standards
Buyer search paths
Related sourcing terms
These terms support long-tail discovery while keeping the page focused on useful product and China export buying context.
Share target market, quantity, packaging scope, artwork status, delivery destination, and required documents so CHN Chemicals can prepare a cleaner supplier comparison.
Questions to confirm
Which CAS number will appear on the COA, SDS, commercial invoice, packing list, and customs declaration: 7631-86-9, 112926-00-8, or 10279-57-9?
Can you provide a recent batch COA for Basisil-PPT185 showing SiO2, BET surface area, DBP absorption, moisture/loss on drying, pH, ignition loss, and sieve residue?
Is Basisil-PPT185 a standard production grade, and is the 180 m²/g surface area controlled by an internal specification range?
Can you provide particle size distribution, tapped density/bulk density, and dispersibility data for rubber compounding evaluation?
What is the current lead time for 20 kg, 380 kg, and 625 kg packaging?
What is the MOQ for trial order, container order, and repeat contract supply?
Can you provide retained samples or pre-shipment samples from the same production lot?
Is the product supplied with moisture-resistant inner liner and export-ready labels?
Checks before quote
Request latest COA matching the exact batch and grade Basisil-PPT185
Request SDS in buyer-required language and confirm GHS classification, transport classification, and any dust-related occupational exposure information
Confirm correct CAS number before customs filing because the source title and product details show different CAS identifiers
Confirm REACH certificate or registration coverage if importing into the EU; supplier page states REACH certification but documentation should be reviewed
Confirm HS code 281122 or buyer-country classification with customs broker
Confirm whether product is non-DG for sea/air transport based on the latest SDS; do not rely only on marketplace page descriptions
Request export invoice, packing list, COA, SDS, certificate of origin, and any buyer-specific compliance declarations
Confirm limits or test results for moisture, loss on drying, pH, soluble salts, heavy metals, sieve residue, and ignition loss if required by downstream rubber formulation standards
Next step
Send the product page with your target quantity and market. A sourcing manager can then confirm sample options, supplier fit, packaging details, and open document gaps.
