Product Code: Commercial Name: Manufacturer: Pigment Classes: CAS No: EINECS No: 6624 Heat-­‐Stable Brown Huntsman Pigment Brown 7 / Color Index No. 77491 68187-­‐51-­‐9 Date: 08/16/2001 Ref: 6624 Version: 001 Page 1 of 1 Description Heat-­‐Stable Brown 6624 is a light brown blend of iron oxide (Fe2O3) and ferrite, produced by the high temperature reaction of iron oxide and zinc oxide (ZnO•Fe2O3). Dark Heat-­‐Stable Brown 6624 is a high performance, heat stable pigment, processed for ease of dispersion, color consistency and stable performance in coatings, both aqueous and non-­‐aqueous, plastics and other high-­‐heat applications where high temperature resistance and weather durability is required. Heat-­‐Stable Brown 6624 is color-­‐stable in processing temperatures up to 315°C (600°F). The Heat-­‐Stable Brown series is most commonly used in plastics. High temp stability and ease of dispersion make these pigments suitable for resin systems from LLDPE and vinyl to sophisticated engineering polymers and silicone rubber compounds. Interactions of pigment and some resins in high-­‐temp plastics compounding can lead to slight color shifts. Suitability of high heat-­‐stable pigments should be verified for specific applications. Exterior durability is improved by the ultraviolet screening properties contributed by these pigments, especially with polymers that are sensitive to sunlight. The high heat-­‐stable product line is characterized as providing advantages in the following areas: •
Heat Stability •
Ultraviolet Screening •
Color •
Non-­‐Migration •
Dispersion •
Bleed Resistance •
Exterior Durability •
Quality Assurance The high heat-­‐stable browns are inert, insoluble in organic materials as well as resistant against chemicals, alkali and dilute acids. Heat-­‐Stable Brown 6624 is of sufficient purity for use in packaging or articles that come in contact with food (21CFR), but not suitable for the direct coloration of food or cosmetics. Uses: coil coatings, high-­‐bake industrial finishes, roofing granules and plastics: polyethylene, polypropylene, cellulose acetate, phenolics, polyesters, polystryrene vinyl, acrylic, rayon and polyurethane. Composition/Typical Properties Fe2O3 content (%) 23 – 25 Zinc Ferrite content (%) 77 – 78 Oil Absorption (g/100g) 32 Weight per Gallon (lbs) 42.81 3
Specific Gravity (g/cm ) 5.14 One Pound Bulks .02325 3
Apparent Density (lbs/ft ) 53 325 Mesh Retention (%) <0.04 Water Soluble Salts (%) <0.15 Ignition Loss (%) 0.2 Moisture & Volatile (%) 0.1 pH 6 – 7 Particle Shape Acicular Predominant Particle Size (µm) 0.2 x 1.1 The values for typical contents and trace metals are provided as general information only. They are approximate values for reference and not specifications utilized in our standard QC procedures for color and consistency.