Overview
Chrome Red B is a synthetic inorganic pigment known for its vibrant red color and high opacity. It is chemically composed of lead chromate and lead molybdate, which contribute to its stability and brightness. The pigment is widely used in industrial applications due to its excellent lightfastness and resistance to heat. First developed in the early 20th century, Chrome Red B became popular in coatings and plastics industries. However, its use has been scrutinized due to environmental and health concerns associated with lead and chromium content. Modern alternatives are being explored, but Chrome Red B remains in demand for specific applications where its properties are unmatched.
Physical and Chemical Properties
Chrome Red B appears as a bright red powder with a density of approximately 6.0 g/cm³. It is insoluble in water and most organic solvents, making it suitable for aqueous and solvent-based systems. The pigment exhibits excellent opacity, which allows for strong coverage even in thin layers. Its chemical stability under high temperatures (up to 300°C) makes it ideal for applications like plastics molding and ceramic glazes. However, it is sensitive to strong acids and reducing agents, which can alter its color or decompose the compound. Proper handling and storage are essential to maintain its performance.
Main Applications
Chrome Red B is predominantly used in industrial coatings, including automotive and machinery paints, where durability and color retention are critical. Its bright hue and opacity also make it a preferred choice for plastics, such as PVC and polyolefins, used in toys, packaging, and consumer goods. In the ceramics industry, the pigment is applied to glazes and decorative finishes due to its heat resistance. Additionally, it finds use in printing inks for posters and packaging. Despite regulatory restrictions, niche applications in aerospace and military coatings still rely on Chrome Red B for its unmatched performance.
Safety and Storage
Due to its lead and chromium(VI) content, Chrome Red B poses significant health risks if inhaled or ingested. Workers must use personal protective equipment (PPE), including gloves, masks, and goggles, when handling the powder. Facilities should ensure proper ventilation and dust control measures. Storage requires a cool, dry environment, away from acids and reducing agents that could degrade the pigment. Spills should be contained and disposed of according to hazardous waste regulations. Compliance with global standards like RoHS and REACH is mandatory for legal use in many regions.
B2B Procurement Guide
When purchasing Chrome Red B, prioritize suppliers who provide detailed Safety Data Sheets (SDS) and Certificates of Analysis (COA). Verify compliance with regional regulations, such as EU RoHS or U.S. TSCA, to avoid legal liabilities. Bulk buyers should negotiate pricing based on volume, with reference prices ranging from $5 to $15 per kg. Consider testing samples for color consistency and chemical purity before large-scale orders. Alternative pigments like organic reds or cadmium-free options may be explored for eco-friendly projects, though they may lack Chrome Red B’s performance in certain applications.
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