Cobalt Oxide 72% Ceramic Pigment

Description

Cobalt Oxide 72% Ceramic Pigment

We are a cobalt oxide supplier of 72% ceramic pigment grade. Cobalt Oxide 72% Ceramic Pigment (CAS 1308-06-1, molecular formula Co3O4) is a raw material for tile, sanitaryware, tableware and refractory production, where particle size and impurity profile drive fired colour and body strength. China Chemicals supplies it at Co 72% min in pack sizes from 1 kg through to 500 kg Pallet, so laboratory trial quantities and full production volumes can be sourced from the same specification.

It is also traded as Tricobalt Tetroxide, Cobaltosic Oxide, Cobalt Black. 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

• Blue colourant in ceramic glaze and porcelain enamel
• Blue and black pigment in glass manufacture
• Precursor for lithium cobalt oxide battery cathode
• Catalyst in petrochemical and oxidation processes
• Adhesion promoter in steel-cord rubber compounds

Technical specification

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 Drum, 500 kg Pallet. 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: UN3077. Confirm the proper shipping name, hazard class and packing group against the current SDS and transport documents before shipping. Primary health hazard: Carcinogen (cat 1B), aquatic toxin. 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 Cobalt Oxide 72%?

Cobalt oxide for ceramic use is Co3O4 (cobalt tetroxide), a mixed-valence spinel oxide containing both Co2+ and Co3+ — distinct from cobalt(II) oxide (CoO), a different and less commonly used compound. At 72% cobalt content and a fine particle size, this grade is optimized for consistent, predictable colour development when melted into a glaze. In the molten glaze, cobalt enters the silicate network primarily as Co2+, which produces the characteristic blue — the exact shade depends heavily on the surrounding glaze chemistry and how much is added.

A Genuinely Ancient Pigment

Cobalt blue has one of the longest continuous track records of any ceramic colorant. It was used to produce blue glazes in the Middle East from at least the 8th century, and became the defining colour of Ming Dynasty blue-and-white porcelain from the 14th century onward. It is often layered with Chrome Oxide Green and fluxed with Zinc Oxide to build the wider range of glaze colours.

Handling & Safety: Please Read This Section

Cobalt oxide is insoluble in water but soluble in concentrated acids. Documented health effects from cobalt exposure include skin sensitization (allergic reactions with repeated contact) and chronic respiratory effects including occupational asthma from prolonged inhalation. These are well-established occupational hazards for cobalt compounds generally, and they should shape how you handle this material: use adequate dust control and ventilation, wear gloves to prevent repeated skin contact, and use respiratory protection where dust exposure cannot otherwise be controlled.

Frequently Asked Questions

What colour does cobalt oxide produce in a glaze?
A range of blues — from intense blue or blue-black to vivid blue — depending on the surrounding glaze chemistry and how much is added. Excessive addition can push the result toward black.

Is cobalt oxide the same as cobalt carbonate?
No. Both are used as blue ceramic colorants, but cobalt carbonate gives a weaker blue with less risk of specking (uneven colour spots) compared to cobalt oxide.

Is cobalt oxide safe to handle?
It requires genuine, specific precautions: cobalt compounds are documented skin sensitizers, and chronic inhalation is linked to respiratory sensitization and occupational asthma. Gloves, dust control and respiratory protection where needed are essential.

What else is cobalt oxide used for besides ceramics?
It is a key precursor for lithium cobalt oxide (LiCoO2) battery cathode material, and is used in catalysts, electronic ceramics, sensors and magnetic materials.

What packaging and order quantities are available?
We supply from trial quantities through to full bulk orders. Contact us with your required volume for current pricing and lead time.

Your Trusted Cobalt Oxide Supplier

As an established cobalt oxide supplier, we serve manufacturers and processors with consistent quality and reliable delivery. The right cobalt oxide supplier gives you steady specification and documentation batch after batch, and as your cobalt oxide supplier we back every order with a Certificate of Analysis.

For further independent reference, see the Wikipedia entry on cobalt(II,III) oxide, and browse our full Ceramic Chemicals range.