Factory Supply High Quality Leuco Dye Odb-2 / Black 2 CAS 59129-79-2 for Thermal Paper Chemicals Direct Manufacturer. Fast Thermal Response: Highly sensitive reaction speed suited for ultra-high-speed modern thermal printing heads. Superior Image Stability: Excellent resistance against ambient heat, light, humidity, oil, water, and plasticizer degradation. High Optical Density: Delivers intense black optical density with a clean background for high-resolution printing. Narrow Particle Size: Exceptionally low impurity levels ensure smooth dispersion and prevent printhead clogging. Free Sample Available: Free samples (100g-500g) provided for lab testing; buyer covers only courier cost. Flexible Packaging: Standard 20kg/25kg bags available; customized jumbo bags or labeling for bulk orders. Compliance Documentation: SDS, COA, and TDS provided; REACH compliant for international trade requirements.