Frequently Asked Questions (Technical, Application, Standards)
Q1: What distinguishes Rutile from Anatase titania tio2 in wall coatings?
Rutile grades offer superior hiding power, UV and weather resistance due to their compact tetragonal crystal structure, making them ideal for exterior applications; Anatase is preferred in interior use for better dispersion but lower weather fastness.
Q2: What certifications should a high-quality titania tio2 manufacturer provide?
Top suppliers deliver with ISO 9001, ISO 14001 (environmental management), REACH, and SGS/TÜV product verification. For food contact, FDA/ANSI 51 is necessary.
Q3: How is particle size controlled in leading titania tio2 factories?
Through advanced micronizing, hydrocycloning, and laser diffraction, top-rated titania tio2 suppliers achieve a D90 particle size of ~0.22μm ±0.04, critical for gloss and dispersion in paints.
Q4: What is the standard service lifetime for titania tio2 in coatings?
ISO QUV/ASTM D2244 tests confirm that premium rutile-based exterior wall coatings retain performance for 10–15 years under UV, humidity, and pollution stress, far exceeding non-TiO₂ alternatives.
Q5: What is oil absorption and why does it matter?
Oil absorption (ISO 787-5 measured) refers to the grams of linseed oil absorbed per 100g pigment; values between 18–22 imply better viscosity, lower binder demand, and smoother paint application.
Q6: Are lead/chromium present in wholesale titania tio2 pigments?
Leading producers guarantee <10ppm heavy metals; compliance with RoHS, EN71-3 for eco-friendly, children-safe pigments.
Q7: How does delivery from titania tio2 supplier work?
Multi-modal logistics: Sea (FCL/LCL), rail, truck. Typical transit times: Asia/Europe 14–27 days, with full batch traceability and pre-inspection. Rush 7-day air available.