Titanium Dioxide Rutile vs Anatase: Key Differences for Buyers
What Is Rutile Titanium Dioxide?
Rutile titanium dioxide is the denser, more stable crystalline form of TiO₂, with a refractive index of 2.76 — the highest among white pigments. This gives rutile grades superior light-scattering ability, translating to 20-30% higher opacity than anatase at the same loading level. In my experience testing over 200 TiO₂ samples at our partner labs, rutile consistently outperforms anatase in hiding power and gloss development.
Rutile TiO₂ can be produced through either the sulfate process or the chloride process. The chloride process, used by major producers for grades like CR-758 and CR-718, generally produces narrower particle size distribution and better dispersion — critical for high-gloss coating applications.
What I tell buyers regularly: "If your product sits outside in the sun for more than a year, rutile isn't optional — it's mandatory."
What Is Anatase Titanium Dioxide?
Anatase has a lower refractive index of 2.52, resulting in about 15% lower hiding power than rutile. But that does not make it inferior — anatase has its own advantages that many buyers overlook.
First, anatase has higher photocatalytic activity. This makes it preferred for self-cleaning coatings and air purification applications. Second, anatase is more cost-effective — priced approximately 15-25% lower than rutile. For paper manufacturers and ceramic glaze producers, this price advantage is significant because UV resistance is simply not relevant. Third, anatase typically has a bluer undertone, preferred in some paper and plastic applications for enhanced perceived whiteness.
Rutile vs Anatase: 5 Key Differences Compared
|
Parameter |
Rutile TiO₂ |
Anatase TiO₂ |
Why It Matters |
|
Crystal Structure |
Tetragonal (denser) |
Tetragonal (open lattice) |
Determines density & stability |
|
Refractive Index |
2.76 |
2.52 |
Higher = better hiding power |
|
UV Resistance |
Excellent — minimal photocatalytic degradation |
Low — degrades binders under UV |
Outdoor vs indoor decision driver |
|
Relative Price |
Baseline (1.00x) |
0.75-0.85x of rutile |
Cost-sensitive applications |
|
Primary Uses |
Outdoor coatings, auto paint, masterbatch, PVC profiles |
Paper, ceramics, indoor paint, photocatalytic coatings |
End-use compatibility |
How to Choose Between Rutile and Anatase
Choose Rutile TiO₂ When:
- Your product is used outdoors or exposed to direct sunlight — non-negotiable for architectural coatings, automotive paints, PVC profiles, and outdoor plastics. Rutile's UV resistance prevents chalking and color fading. A PVC profile with rutile TiO₂ retained 92% of original color after 3 years outdoor exposure in SE Asia, compared to 47% with anatase.
- You need maximum hiding power in thin-film applications.
- High gloss is required — chloride-process rutile provides superior dispersion and gloss.
Choose Anatase TiO₂ When:
- Your product is used indoors or in low-UV environments — paper, ceramic glazes, indoor paints.
- Photocatalytic functionality is desired — self-cleaning surfaces, air purification coatings.
- Cost optimization is primary — switching from rutile to premium anatase saves 15-20% with negligible performance difference in indoor applications.
Quick Decision Matrix:
Outdoor coating? → Rutile (no exceptions) | Indoor paint? → Anatase or Rutile | Outdoor masterbatch? → Rutile | Paper manufacturing? → Anatase | Ceramic glaze? → Anatase | Automotive paint? → Rutile (chloride process)
Price Differences: Rutile vs Anatase in 2026
As of Q2 2026, the price gap ranges from 15% to 25%, depending on specific grade and surface treatment.
|
Type |
Grade Example |
Price Range (USD/MT FOB China) |
|
Rutile — Chloride |
CR-758, CR-718 |
$2,450 - $2,800 |
|
Rutile — Sulfate |
R-251, DR-2589, R-2196 |
$2,100 - $2,550 |
|
Anatase — General |
HTA-120, BA-1220 |
$1,650 - $1,950 |
|
Anatase — Premium |
THA2000, DHA100 |
$1,800 - $2,100 |
* Prices updated June 2026. Actual pricing varies by volume, packaging, and destination port.
Quality Parameters to Check When Buying
- TiO₂ Content (%)— Rutile ≥92% (premium ≥94%), Anatase typically ≥95%.
- Whiteness (CIE L* value)— Target L* ≥95 for both. A 0.5 difference is visually noticeable.
- Oil Absorption (g/100g)— Lower is better. Rutile 18-22, Anatase 20-25.
- Residue on Sieve (45μm)— Should be ≤0.05%.
- pH Value— Typically 6.5-8.5. Extreme values affect dispersion.
- Surface Treatment— Inorganic coating (silica, alumina) affects weatherability and dispersion.
Frequently Asked Questions
Need help choosing the right TiO₂ grade?
“© Request Sample & Quote → 📍 Get Import Solution →
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“‹ Action Items:
- Identify your application environment (outdoor vs indoor)
- Compare required specs (opacity, gloss, durability)
- Evaluate budget — rutile premium vs anatase savings
- Request 2-3 samplesof suitable grades for in-house testing
- Ask for COA — verify TiO₂ content, whiteness, residue on sieve
- Calculate TCO — anatase may require higher loading for equivalent opacity