R838 titanium dioxide supplier and specification
Jinan Yuxing sulphate-process rutile R838, supplied and exported by authorized partner TiO2 Source — with verified TDS limits, pre-shipment checks and a batch COA.
R838 is manufactured by Jinan Yuxing Chemical and supplied/exported by TiO2 Source.
The current manufacturer TDS positions R838 as a universal rutile grade for plastics, coatings, rubber, masterbatch and papermaking. It specifies Si/Al inorganic coating plus organic treatment, TiO2 purity ≥92%, oil absorption ≤20 g/100g and pH 6.5-8.5. The current controlled TDS, agreed specification and lot COA govern each shipment.
Jinan Yuxing R838 specification limits.
The values below come from the manufacturer TDS supplied to TiO2 Source. They are specification limits, not batch results.
| Parameter | Manufacturer specification | Buyer action |
|---|---|---|
| TiO2 content | ≥92% | Confirm test method and selected producer limit. |
| Rutile conversion | ≥97.0% | Include if crystal conversion is part of acceptance. |
| 105°C volatile matter | ≤0.8% | For plastics, consider a tighter application-specific moisture/volatile requirement. |
| Water-soluble matter | ≤0.5% | Confirm method and end-use sensitivity. |
| Sieve residue, 45 μm | ≤0.05% | Pair with dispersion/fineness-of-grind testing. |
| Tinting strength | Reynolds number ≥1800 | Do not compare directly with percentage-vs-standard values used on other TDS documents. |
| pH, water suspension | 6.5–8.5 | Confirm compatibility with the binder or resin. |
| Oil absorption | ≤20 g/100 g | Evaluate viscosity and dispersant demand in the actual system. |
| Water-extract resistivity | ≥80 Ωm | Confirm units and test method on the controlled TDS. |
| Surface treatment | Si/Al inorganic coating plus organic treatment | Keep the treatment declaration in the approved specification. |
| Packaging | 25 kg valve paper bag; 500 kg and 1000 kg bulk bags optional | Confirm pallet, container loading and moisture protection. |
Contract boundary: this page concerns Jinan Yuxing R838. The quotation TDS, signed specification and lot COA override older copies or generic R838 tables found in directories.
Where R838 is a sensible starting grade.
Coatings
The manufacturer TDS lists coatings within the universal application range. For demanding exterior warranties, begin evaluation with R868.
Rubber and papermaking
Both are explicitly listed in the manufacturer TDS. Evaluate colour, dispersion and process behaviour against the incumbent.
White masterbatch
Useful as a general starting grade. Validate moisture/volatiles, organic treatment, tint strength, throughput, filter pressure and film defects using the masterbatch checklist.
Equivalent-grade sourcing
Provide the incumbent TDS, COA and retained sample. TiO2 Source can compare the approved parameters and arrange a controlled trial of a named producer or equivalent.
R838 supplier qualification checklist
- Fix Jinan Yuxing as the producer and approve the current controlled TDS.
- Approve the SDS, surface treatment and analytical methods.
- Define lot COA limits and any buyer-specific application test.
- Run a trial against the incumbent for dispersion, colour, hiding, gloss, viscosity or plastics processing.
- Confirm pack, pallet, container quantity, retained sample, inspection, destination documents and Incoterm.
What TiO2 Source does
TiO2 Source is an authorized distributor and export partner. Jinan Yuxing Chemical manufactures R838; TiO2 Source coordinates technical documents and samples, confirms the commercial lot against the agreed specification, and handles export documentation and logistics.
Standard ordering information for R838.
Final terms and the shipment schedule are confirmed in the quotation.
MOQ and delivery
Minimum order quantity: 1 FCL (full container load). Typical lead time: 10–20 days; confirm the shipment schedule in the quotation.
FOB, CIF and sample
FOB or CIF available. Free product sample available; courier or freight arrangements are confirmed with the quotation.
Directory and technical cross-checks.
External market benchmark for listed R838 fields including TiO2 content, volatiles, soluble matter, sieve residue, tint strength, pH, oil absorption, resistivity, rutile conversion and particle diameter. This is not an endorsement or TiO2 Source contract specification.
Professional explanation of why surface chemistry affects wetting, dispersion, viscosity and consistency, and why nominally similar lots should not be assumed identical.
Technical background on silica, alumina, zirconia and organic treatments and their effects on durability, gloss and dispersion.
R838 procurement questions.
Is R838 one universal specification?
No. This page is specifically for Jinan Yuxing R838. Fix the manufacturer, treatment, current TDS, test methods and COA limits on the order.
Is TiO2 Source the R838 manufacturer?
No. Jinan Yuxing Chemical is the manufacturer. TiO2 Source is its authorized distributor and export partner for this supply.
Can R838 be used for exterior coatings?
The TDS lists coatings but does not make a specific exterior-durability claim. Qualify R838 against the warranty and exposure target; begin demanding exterior evaluation with R868.
What comes with an R838 quotation?
The quotation should identify the selected producer/grade, current TDS, packaging, quantity, delivery basis and available documents. The commercial lot ships with a COA against the agreed specification.
Request an R838 TDS, sample and quotation.
Send the application, incumbent grade or target specification, annual volume, destination and required documents.
Compare the five verified TiO₂ grade specifications.
Review crystal form, TiO₂ content, surface treatment, oil absorption, pH, tinting-method boundaries and manufacturer-listed applications in one evidence-aligned matrix.