Chloride-Process Rutile TiO2 R-902 — General-Purpose Coating Grade (Chemours R-902+ Equivalent)
SEMITECH Chloride-Process Rutile TiO2 R-902 is a chloride-route rutile titanium dioxide with alumina-silica inorganic surface treatment, engineered to deliver the opacity, tinting strength, and dispersibility performance equivalent to Chemours Ti-Pure R-902+. At ≥92.0 Wt% TiO2, ≥96% rutile crystal phase, and tinting strength ≥1800, it meets the specifications demanded by premium interior and exterior architectural coatings and industrial maintenance formulations.
The chloride process delivers superior brightness (whiteness ≥97.0) and a tighter particle-size distribution (d50 0.2–0.3 μm) compared to sulfate-process rutile, resulting in better hiding power per unit mass and easier dispersion in waterborne and solventborne coating systems. SEMITECH R-902 is available at 20–25% below Chemours list pricing from direct Chinese manufacture with full technical documentation.
Technical Specifications
| Properties and Test Methods | Unit | Typical Value | Standardization |
|---|---|---|---|
| TiO₂ content | Wt% | ≥92.0 | GB/T 1706 |
| Rutile crystal content | % | ≥96.0 | GB/T 5211.24 |
| Whiteness | — | ≥97.0 | GB/T 5211.13 |
| Tinting strength | — | ≥1800 | GB/T 1709 |
| Oil absorption | g/100g | 16–21 | GB/T 5211.15 |
| pH (10% slurry) | — | 6.5–9.0 | — |
| Sieve residue (45 μm) | % | ≤0.05 | — |
| Surface treatment | — | Al₂O₃ + SiO₂ | — |
| Median particle size d50 | μm | 0.2–0.3 | — |
Application Suggestions
Premium Interior and Exterior Architectural Coatings
R-902 is the standard-specification TiO2 for premium interior and exterior architectural paints, including flat, eggshell, satin, and semi-gloss finishes. Its tinting strength of ≥1800 provides efficient hiding at typical loadings of 15–22 Wt%, and the Al₂O₃ + SiO₂ surface treatment ensures excellent wet-scrub resistance and coating durability in exterior applications. Equivalent to Chemours R-902+ in all key performance metrics for this application.
Industrial Maintenance Coatings and Primers
For industrial maintenance coatings applied to structural steel, bridges, tank exteriors, and pipelines, R-902's combination of high TiO₂ content and inorganic surface treatment provides the hiding power, UV stability, and corrosion-barrier contribution needed in primers and intermediate coats.
High-Durability Exterior Powder Coatings
In thermoset and thermoplastic powder coating formulations for architectural extrusions, garden furniture, and industrial equipment, R-902 delivers the opacity and whiteness performance expected from chloride-process TiO₂ at loadings typically 20–30 Wt%. The low oil absorption (16–21 g/100g) facilitates smooth melt extrusion in powder coating manufacture.
PVC Pipe and Profile
R-902 is used in rigid PVC applications including pipe, window profiles, and siding where a bright white finish and UV stabilization contribution are required. The surface treatment compatibility with standard PVC heat stabilizers (Ca/Zn, tin-based) should be verified by the formulator.
Technical Support & FAQ: Chloride-Process Rutile TiO2 R-902
+Q1: What makes chloride-process TiO2 superior to sulfate-process for coatings?
Chloride-process TiO₂ produces a narrower, more uniform particle-size distribution (d50 0.2–0.3 μm) that maximizes light scattering efficiency at the wavelengths relevant to whiteness and hiding power. The process also delivers lower impurity levels, contributing to better brightness (whiteness ≥97.0) and cleaner tinting base behavior versus sulfate-process grades.
+Q2: How does R-902 compare to Chemours Ti-Pure R-902+?
SEMITECH R-902 is engineered to match R-902+ on all key specification parameters: TiO₂ content ≥92%, rutile ≥96%, tinting strength ≥1800, Al₂O₃ + SiO₂ surface treatment, and oil absorption in the 16–21 g/100g range. Pricing is typically 20–25% below Chemours list. Full CoA data is provided for qualification testing in the customer's coating formulation.
+Q3: What factors affect pricing?
Chloride-process TiO₂ pricing is primarily driven by order volume and global TiO₂ market conditions. FCL volume (approximately 20 MT) attracts the best pricing. Contact info@semitechnm.com for a current FOB Shanghai indication.
+Q4: What are lead times and payment terms?
Standard lead time is 7–14 days from order confirmation for stocked grades. Payment terms: T/T, L/C, D/P. Free samples of 200g–1kg are available for coating formulation qualification testing on request.
Packing & Storage Information
20′ FCL Container Approximately 20 MT in 25 kg multi-wall kraft paper bags (800 bags). Palletized loading standard. Net weight per bag: 25.0 kg.
40′ HQ Container Approximately 22–24 MT in 25 kg bags or 500 kg jumbo bags. Jumbo bag format reduces packing cost for bulk coating manufacturers.
Storage Conditions Store in a cool, dry warehouse. TiO₂ is chemically inert and non-hazardous under normal storage conditions. Avoid prolonged exposure to high humidity which may cause bag caking. Shelf life: unlimited in original sealed packaging when stored correctly.