Cobalt Pink Pigment

Description

Cobalt Carbonate is a delicate pink pigment derived from cobalt(II) carbonate (CoCO₃). When finely ground, it produces a soft rose to dusty pink hue with cool undertones. As a pigment, it has relatively low tinting strength but provides a subtle, mineral quality unlike brighter organic pinks.

In watercolor, it appears semi-transparent and slightly granulating, giving a gentle pastel wash. In oils and acrylics, it behaves as a semi-opaque pigment with muted, earthy pinks that mix beautifully into flesh tones and atmospheric tints.

History

Cobalt compounds were first industrially prepared in the 18th and 19th centuries, most famously for blues and violets. Cobalt carbonate itself has been widely used in ceramics and glassmaking as a colorant, producing strong pinks and reds when calcined.

While it was never as common in historical palettes as cobalt blue or cobalt violet, cobalt carbonate developed a niche use among painters and enamelers seeking a stable, mineral based pink. In painting, it functions more as a subtle blending and glazing pigment than a high chroma color.

Today, it remains primarily a ceramic and enamel colorant but is also valued by artisanal pigment makers for its gentle, historically grounded hue.

Pigment Information

Pigment Type: Synthetic Inorganic
Chemical Composition: CoCO₃ (Cobalt(II) Carbonate)
Suitable Mediums: Watercolor, Oil, Tempera, Acrylic, Encaustic, Ceramics, Enamels
Lightfastness: Excellent
Opacity: Semi-transparent to Semi-opaque
Other Names: Pink Cobalt, Cobalt Pink, Cobalt Carbonate Pink
Color Index Code: N/A

Health and Safety

• For art use only. Not for cosmetic, food or children's use.
• Keep out of reach of children and pets. Do not eat, drink or smoke while working.
• Avoid creating or breathing dust. Work in a ventilated area and wear a NIOSH approved dust respirator (P100 or better) when handling dry pigment.
• Wear gloves and eye protection. Wash hands and work surfaces after use, and never rinse pigment into drains.
• Do not spray apply, sand or burn.
• If swallowed or if you feel unwell, contact a poison control center (U.S. 1-800-222-1222) or a doctor.
• Safety Data Sheet available on request.

Caution: Contains cobalt carbonate. May cause cancer if dust is inhaled. May cause allergy or asthma symptoms if inhaled and an allergic skin reaction. Suspected of causing genetic defects and of damaging fertility. Harmful if swallowed. Avoid all dust and skin contact. Very toxic to aquatic life; never rinse into drains. Wear a P100 respirator (full face, or half face with goggles) when handling the dry pigment; N95 and P95 masks are not sufficient.