BAYFERROX® 503
Product Description
Bayferrox® 503 is a very yellowish iron oxide red pigment. It is delivered as powder and can be applied for the coloration of a wide variety of construction materials.
Brand
BAYFERROX®
Molecular Formula
Fe2O3
Product Type
Color Pigments
Color
Red
Delivery Form
Powder
Molar weight
159.7
Material number
57622674
Color Index
77491
REACH
01-2119457614-35-0000
CAS (CAS Number)
1309-37-1
Packaging Format
BFX | Grades are delivered in different packaging materials. Please ask your local contact about the packaging for the grade in question
Facade Elements
Roofing Felts
In Situ Concrete
Paving Stones
Fertilizers
Mortar
Concrete Roofing Tiles
Fibre Cement
Noise Barriers
Sand-lime Bricks
Concrete Admixtures
Screed
Asphalt
Construction material
Plaster
B FE 503
BAYFERROX 503
BF 503
Iron oxide Pigment 503
FREQUENTLY ASKED QUESTIONS (FAQ)
The quality advantages of our Bayferrox® and Colortherm® brand iron oxides include outstanding color stability, excellent lightfastness, outstanding weather resistance, and high thermal stability. Since these pigments are practically insoluble in water, they are also migration-resistant.
LANXESS is a leading manufacturer of synthetically produced inorganic color pigments. Under the Bayferrox®, Colortherm®, and Bayoxide® brands, we offer various iron oxides that differ in their chemical composition, crystal structure, morphology, and color. The most important types are:
- Iron(III) oxide (α-Fe₂O₃ and γ-Fe₂O₃): Forms the basis for lightfast, weather-stable red shades.
- Iron oxide hydroxide (α-FeO(OH) and γ-FeO(OH)): Forms basis for brilliant, lightfast yellow pigments.
- Iron(II,III) oxide (Fe₃O₄): Used for deep black shades.
- Mixed oxides: Combinations of the above oxides produce a wide variety of brown shades.
Natural iron oxide pigments are derived from natural ores and often contain impurities. As a result, their color quality and composition are not always consistent, and the hues often appear less intense. Furthermore, their availability depends on natural deposits.
Synthetic iron oxide pigments, on the other hand, are manufactured industrially, giving them a very high purity and consistent quality. Their particle size and composition can be precisely controlled, resulting in uniform, vibrant, and exactly reproducible shades.
Yes, Bayferrox and Colortherm brand iron oxide pigments have a proven low carbon footprint, as verified by Environmental Product Declarations (EPDs). You can find more information here.
LANXESS distributes its iron oxide pigments worldwide. We also work with local distribution partners. Contact us and we will connect you with the right contact.
All data sheets are available online via the product search.
Iron oxides manufactured by LANXESS are generally suitable for many regulated applications. However, whether they are suitable for food contact, cosmetics, or pharmaceutical use must be verified on a case-by-case basis for each product type based on the technical and regulatory documentation. Please contact us.
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