SR-2377 is a rutile titanium dioxide pigment from DOGUIDE Group, produced with zirconia and alumina inorganic coating plus organic surface treatment. This general-purpose grade delivers good whiteness, excellent gloss, high tinting strength, super durability, and strong dispersion, making SR-2377 a reliable choice for coatings, plastics, and masterbatch formulators who need consistent hiding power at a competitive cost.
SR-2377 is manufactured by DOGUIDE Group, a leading titanium dioxide producer in China and one of Asia’s largest TiO2 manufacturers. As a rutile-grade pigment, SR-2377 combines good gloss, high hiding power, and excellent dispersion, with inorganic zirconia/alumina coating and an organic surface treatment layer that improve weatherability and processing performance across a wide range of formulations.
Key Characteristics
- Good whiteness & excellent gloss — delivers a bright, high-gloss finish across coating systems.
- High tinting strength — efficient hiding power reduces the amount of pigment needed per formulation.
- Super durability — zirconia/alumina inorganic coating supports long-term weathering resistance.
- Good dispersion — organic surface treatment eases incorporation into paints, inks, and plastics.
Technical Specifications
| Property | SR-2377 |
|---|---|
| TiO2 Content, % | ≥94 |
| Rutile Content, % | ≥98 |
| Inorganic Coating | Zirconia, Alumina |
| Organic Treatment | Yes |
| Crystal Size, µm | 0.3 |
| Specific Gravity, g/cm³ | 4.0 |
| Bulk Density, g/cm³ | 1.1 |
| Water Demand, cm³/100g pigment | 26 |
| Color CIE L* | ≥97.5 |
| Oil Absorption, g/100g | 18–22 |
| pH | 7.0–9.0 |
SR-2377 is classified as ISO591-1:2000 (E) Type R2 and ASTM D 476-00 Type V, confirming its identity as a standard rutile titanium dioxide pigment suitable for industrial and coatings applications.
Choosing SR-2377 by TiO2 Content, Crystal Size and Oil Absorption
Formulators comparing rutile TiO2 grades typically start with TiO2 content and crystal size, since these two properties most directly drive opacity and light-scattering efficiency. SR-2377 delivers a TiO2 content of at least 94% with a rutile content of at least 98% and a 0.3 µm crystal size, which is in the range recommended for maximizing light scattering in white and pastel coating systems. Combined with a CIE L* value of at least 97.5, SR-2377 gives formulators a straightforward brightness benchmark to check batch consistency against when qualifying a new production run.
Oil absorption and water demand also matter once a formulator moves from raw pigment selection to actual mixing. SR-2377’s oil absorption of 18–22 g/100g gives a working range for estimating binder demand in solvent-based and powder coating systems, while a water demand of 26 cm³/100g pigment is a useful reference point for formulators building out waterborne architectural paints or paper coating slurries. Because SR-2377 is classified under ISO 591-1:2000 (E) Type R2 and ASTM D 476-00 Type V, buyers switching suppliers can cross-check this grade against equivalent rutile pigments using the same recognized classification system.
Applications
SR-2377 is recommended for a broad range of formulations, including:
- Interior and exterior architectural coatings
- Emulsion paints
- Powder coatings
- Printing inks
- Primer paints
- Paper coating
- Rubber compounding
- Masterbatch
- Plastics
Packaging
SR-2377 is available in 25 kg multi-layer paper-PE bags, as well as bulk 500 kg or 1000 kg bags for larger production volumes.
Packaging, Sourcing and Documentation for SR-2377 Buyers
Buyers ordering SR-2377 for a trial batch or a smaller production run typically start with the 25 kg multi-layer paper-PE bags, while formulators running continuous production lines can move to the 500 kg or 1000 kg bulk bag format to reduce packaging waste and per-kilogram freight cost. Matching packaging format to actual consumption rate also simplifies inventory rotation, since titanium dioxide pigments should be stored in dry conditions and used within the supplier’s recommended shelf life to avoid moisture pickup affecting dispersion.
SR-2377 is one of several rutile titanium dioxide grades available through our auxiliary agent product range, alongside grades such as R-996, giving formulators a point of comparison when qualifying a second TiO2 source for supply continuity. Buyers evaluating SR-2377 for a new coatings, plastics, or masterbatch formulation should request the current technical data sheet and safety data sheet, along with a certificate of analysis for the specific production batch, before finalizing an order.
Frequently Asked Questions
Is this pigment suitable for plastics and masterbatch, not just coatings?
Yes. The organic surface treatment improves dispersion in polymer melts as well as liquid coating systems, so this grade performs well in masterbatch, rigid and flexible plastics, and rubber compounding in addition to paints, inks, and paper coating.
How does the zirconia/alumina coating affect performance?
The inorganic coating layer improves weathering durability and reduces photocatalytic chalking compared to uncoated titanium dioxide, while the outer organic treatment layer eases wetting and dispersion during high-shear mixing.
What packaging and MOQ options are available?
Standard packaging is 25 kg multi-layer paper-PE bags, with 500 kg or 1000 kg bulk bags available for larger production runs. Contact our team to discuss minimum order quantities and lead times for your region.
