Description
Iron Oxide Red 130 Synthetic Pigment
We are a bulk iron oxide supplier of red 130 synthetic pigment. Iron Oxide Red 130 Synthetic Pigment (CAS 1309-37-1, molecular formula Fe2O3) is a coatings raw material used by paint, ink and adhesive formulators who need consistent dispersion, opacity and rheology from drum to drum. China Chemicals supplies it at Fe2O3 96% min in pack sizes from 1 kg through to 1000 kg Bulk Bag, so laboratory trial quantities and full production volumes can be sourced from the same specification.
It is also traded as Pigment Red 101, Synthetic Red Iron Oxide, Ferric Oxide. Every consignment ships with a batch-specific Certificate of Analysis and the current Safety Data Sheet, and material is stored and picked under stock rotation so you receive product well inside its shelf life.
Typical applications
- Colouring of concrete, paving and roof tiles
- Primer and protective coating pigmentation
- Plastics and rubber colouration
- Ceramic body and glaze colourant
- Ferrite and magnetic material precursor
Technical specification
| Chemical name | Iron Oxide Red 130 Synthetic Pigment |
|---|---|
| Synonyms | Pigment Red 101, Synthetic Red Iron Oxide, Ferric Oxide |
| CAS number | 1309-37-1 |
| Molecular formula | Fe2O3 |
| Appearance | Red-brown fine powder |
| Fe2O3 content | 96.0% min |
| Water solubles | 0.3% max |
| Oil absorption | 15 – 25 g/100 g |
| Moisture | 1.0% max |
| Residue on 45 µm | 0.3% max |
| pH | 5.0 – 8.0 |
Values above are typical and are confirmed on the Certificate of Analysis issued against each batch. Tighter specifications can be quoted where a process requires them.
Packaging and supply
Available in 1 kg, 5 kg, 25 kg Bag, 1000 kg Bulk Bag. Bulk, road tanker and export drum quantities are quoted on request, including FOB and CIF terms for international shipment. Pricing shown is per pack in USD, exclusive of freight and any applicable duties.
Handling and safety
Transport classification: Not regulated · Not classified as hazardous. Store in the original closed container in a cool, well-ventilated area away from incompatible materials, and handle using appropriate personal protective equipment. Read the Safety Data Sheet in full before use — it is issued with every order and is available on request before purchase.
Supply to industry only. Products are sold for legitimate industrial, laboratory and manufacturing use. We may request end-use details and business registration before releasing an order.
What Is Iron Oxide Red 130?
Iron Oxide Red 130 is synthetic hematite — the alpha crystal form of iron(III) oxide (α-Fe2O3) — manufactured via a controlled mixed-acid process rather than mined and ground like natural red ochre. This grade is specified at 96% minimum Fe2O3 content, with a specific gravity around 5.0–5.24 g/cm³. Synthetic production gives far tighter control over particle size, purity and colour consistency than natural red ochres can offer.
Why This Pigment Lasts
It is insoluble in water and dilute acids, resistant to lime and alkaline environments, and essentially permanent under UV and weather exposure — a combination that makes it the default red colourant specified for concrete and construction products that need to hold their colour outdoors for decades, often formulated alongside Zinc Phosphate in protective coating systems.
From Yellow to Red: The Calcination Connection
Synthetic red iron oxide is commonly produced by calcining (heating) yellow iron oxide hydroxide at high temperature, which drives off the hydroxide’s bound water and converts it to the anhydrous red hematite form — the two pigments, including our Iron Oxide Yellow 313, are chemically related points on the same production family.
Frequently Asked Questions
What is Iron Oxide Red 130 made of?
Synthetic hematite — alpha iron(III) oxide (α-Fe2O3) — manufactured by a controlled mixed-acid process, specified at 96% minimum Fe2O3 content.
Why is Iron Oxide Red used in concrete and construction materials?
It resists the highly alkaline environment of fresh cement, is insoluble in water, and is permanently stable under UV and weather exposure — properties that keep coloured concrete looking consistent for decades.
Is Iron Oxide Red safe to handle?
Yes — it is a low-toxicity, chemically stable, environmentally safe inorganic pigment. Standard dust-handling precautions apply, as with any fine mineral powder.
What’s the relationship between Iron Oxide Red and Iron Oxide Yellow?
Synthetic red iron oxide is commonly produced by calcining yellow iron oxide hydroxide at high temperature, converting it to the red anhydrous form — they are related products from the same manufacturing family.
What packaging and order quantities are available?
Standard packaging is 25kg bags on pallets or jumbo bags; we also supply smaller trial quantities. Contact us with your required volume for current pricing.
Your Trusted Iron Oxide Supplier
As an established iron oxide supplier, we serve manufacturers and processors with consistent quality and reliable delivery. The right iron oxide supplier gives you steady specification and documentation batch after batch, and as your iron oxide supplier we back every order with a Certificate of Analysis.
For further independent reference, see the Wikipedia entry on iron oxide red, and browse our full Coatings & Paint Raw Materials range.
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