Complex Inorganic color Pigments
Zinc Iron Chromite Brown (PBr 33)

Zinc Iron Chromite Brown is an inorganic brown pigment primarily composed of zinc oxide, iron oxide, and chromium oxide, characterized by a deep and stable brown hue. It offers excellent weather resistance, heat resistance, and chemical corrosion resistance, maintaining color stability and durability under UV exposure and in harsh environmental conditions. With uniform particle distribution, it provides good opacity and tinting strength, resisting fading and migration. Additionally, it is non-toxic and environmentally friendly, making it a high-performance brown pigment.

Typical Properties
Product Code Masstone Tint (1:3) Color Index Name Pigment Chemical Mean Particle Size Oil Absorption(%) PH Heat Resistance
Brown-2750K
PBR33/77503 Zn-Fe-Cr ~0.6 ~22 5-8 >500
Main Characteristics
  • Pigment Brown 33 (C.I. 77503)
  • Spinel structure
  • Light to dark reddish brown
  • Ease of dispersion
  • Excellent dimensional stability, Non-bleeding and Non-migratory
  • High NIR reflectance (Cool Pigment)
  • Light fastness 8(1-8)
  • Weather fastness 5(1-5)
  • Acid fastness 5
  • Alkali fastness 5
  • Solvent fastness 5
  • Cement fastness 5
Application Scope
  • Suitable for all indoor and outdoor applications;
  • Recommended for combinations with high performance organic pigments in opaque formulations to achieve improved weather resistance;
  • Recommended for applications requiring excellent chemical and weathering resistance;
  • Especially recommended for PVC outdoor applications;
  • Suitable for colored applications, where high total solar reflectance is required;
  • Suitable for Polymer PVC-P; PVC-U; PUR; LD-PE; HD-PE; PP; PS; SB; SAN; ABS/ASA; PMMA; PC; PA; PETP; CA/CAB; UP; Masterbatch; Engineering plastics; Wood-plastics; Powder Coatings; Water Based Coatings; Solvent Based Coatings; Stoving coatings; Fluorocarbon coatings; Automotive coatings; Camouflage coatings; Printing Inks; Construction materials; Cement; Mortar; Concrete; Roofing granules; Colored sands.
Total Solar Reflectance Curve (300-2500 nm)

Color Matching
  • ZPIGMENTS provides complete custom color matching services to help our customers develop new colors and finishes to meet specific application standards and/or unique customer needs.
  • ZPIGMENTS works closely with customers to understand their specific requirements to provide customized color solutions.
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