The provided information describes BLANC FIXE micro®, which is a synthetic barium sulfate pigment. Here are the key details:
Composition:
- BLANC FIXE micro® is a synthetic barium sulfate largely free of impurities like quartz.
- It's produced from highly purified solutions in a defined growth process.
- The product is organically treated, resistant to acids and alkalis, insoluble in water and organic solvents.
Properties:
- Color neutral due to low refractive index (1.64 of BaSO4).
- Extremely narrow particle size range (d50 around 0.7 μm) for high gloss specifications and high brilliance in colored systems.
- Low specific surface area (<5 m²/g) and low abrasiveness (due to low Mohs hardness of ca. 3) make it easy to wet and disperse.
Benefits:
- Acts as spacers for TiO2 and color pigments, providing stabilization against flocculation and allowing for higher solid contents in dispersions.
- Offers light fastness and weather resistance.
- Assists in gloss adjustment, rheology control, and enhances mechanical properties.
Typical Properties:
- BaSO4 content: Ca. 99%
- Organic treatment: Present
- Brightness L*: Ca. 99
- Particle size d50 (sedigraph): Ca. 0.7 μm
- 45 μm sieve residue: ≤0.004%
- pH: Ca. 9
- Electrical conductivity: < 200 μS/cm
- Specific gravity: Ca. 4.4 g/cm³
- Loss at 105°C: <0.2%
- C.A.S No.: 7727-43-7
Storage:
- Keep the product unstacked in dry and closed rooms at normal temperature and air humidity.
- Storage under these conditions and use within 6 months from delivery is recommended for best results.
Safety, Health, and Environment:
- Good industrial hygiene practice should be observed to avoid the generation and subsequent inhalation of dust.
- Material safety data sheet should be referred to for more information.
