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Yellow Iron Oxide

Yellow Iron Oxide for Industrial Applications
  • CAS Number: 20344-49-4
  • (FeO(OH))

Yellow iron oxide FeO(OH) for industrial applications, with high tinting strength and reliable supply.

FeO(OH)
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Description
At PILATO, we market yellow iron oxide FeO(OH) for the industrial market in Spain. Through a company-wide, integrated quality management system, we ensure immediate product availability and an operational approach focused on meeting our customers’ delivery schedules and technical requirements, while integrating seamlessly into their supply chains.

Thanks to its high tinting strength, yellow iron oxide is used in the manufacture of pigments and colours for the ceramic sector, as well as in industrial paints, coloured cements and construction materials. It is likewise used to colour mortars, concrete and precast units, where it provides ochre and yellow tones that are stable against light and against the alkalinity of cement. Its thermal behaviour differs from that of red iron oxide, which should be borne in mind when defining the firing cycle.

We supply yellow iron oxide in 20 kg bags and big bags, supported by agile logistics to facilitate its integration into processes already validated by our customers.

  • Benefits

Why choose PILATO as a supplier?

Partnering with PILATO means working with a supplier that has knowledge of the industrial environment and strong logistics capabilities. Our business focuses on offering:

Immediate availability

Immediate availability from our logistics facilities in Spain.

Compliance with Technical Requirements

Compliance with the technical requirements typically requested by our clients

Personalized service

Local presence and personalized service to coordinate deliveries and address sales-related questions.

Commitment

Commitment to traceability, consistency across batches, and a stable supply.

  • Frequently Asked Questions

Frequently Asked Questions About the Yellow Iron Oxide

What is the difference between yellow and red iron oxide?

Their chemical composition. The yellow grade is an iron oxide hydroxide, FeO(OH), while the red is iron(III) oxide, Fe₂O₃. They have different CAS numbers. On heating, the yellow grade loses water and shifts towards reddish tones, so the final colour depends on the temperature of the process.

It depends on the temperature. Above a certain point the oxide hydroxide dehydrates and evolves into red oxide, so the yellow grade is mainly used in applications that do not reach that transformation, such as cements, mortars and paints. For stable colour at high firing temperatures, pigments formulated for that range are used instead.

Yes, that is one of its usual applications. Iron oxides are stable against the alkalinity of cement and against sunlight, the two conditions that degrade other pigments outdoors. They are used in mortars, exposed concrete and precast units.

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