R&F Encaustic Block, Cobalt Green 40ml

R&F Encaustic Paint Block - Cobalt Green, 40 ml

Encaustics paints are an alternative to oil and acrylic paints. Encaustics are a very versatile medium, they can be molded, layered, sculpted, textured, and combined with collage materials. This paint is made up of pigmented pure beeswax and damar resin. Encaustic cakes are resistant to moisture and highly durable.

• Pigment Composition: PY40-Cobalt Yellow; PB36-Cobalt Chromite Blue Green Spinel
• Paint Lines: Encaustic Pigment Stick
• Opacity: Semi-Transparent
• Pigment Stick Drying Rate: Medium
• Classification: Synthetic Inorganic
• Chemical Composition: Cobalt Chromite
• Safety Information: Conforms to ASTM D-4236

Safety Warnings: This product contains cadmium, a chemical known to the State of California to cause cancer.

Pigment Name: PY40-Cobalt Yellow

Classification: Synthetic Inorganic

Chemical Composition: Cobalt potassium nitrite

Properties

Cobalt Yellow is an expensive, transparent, very pure yellow with only fair hiding power. It is reliable in watercolour and makes particularly good tints. However, it must be carefully manufactured in oil form, or it can brown. Cobalt Yellow is known for good mixing quality with all other pigments, and it is useful in glazes and for tinting.

Permanence

Cobalt Yellow has good permanence and lightfastness, and it can withstand strong sunlight.

Toxicity

Cobalt Yellow is highly toxic by inhalation or ingestion. The ingestion of this pigment has caused cyanosis (low oxygen levels in the blood) due to methemoglobinemia.

History

Cobalt comes from the Middle High German word kobolt, an underground goblin, because miners thought cobalt harmed silver ores. The discovery of the potassium and cobalt compound used to make Cobalt Yellow is credited to N.W. Fischer in Breslau in 1848. It was not introduced as an artists’ pigment until 4 years later, by Saint-Evre in Paris. During the previous century, it was considered the only colour that could reasonably replace Indian Yellow.

Pigment Name: PB36-Cobalt Chromite Blue Green Spinel

Classification: Synthetic Inorganic

Chemical Composition: Oxides of Cobalt and Chromium

Properties

Cobalt Chromite Blue is an opaque pigment with moderately low tinting strength.

Permanence

Cobalt salts have excellent lightfastness and temperature stability.

Toxicity

Cobalt salts are toxic when ingested or inhaled, and slightly toxic on contact with the skin. Evidence of Chromium (III) carcinogenicity is inconclusive. Chromium (III) salts appear in greenish pigments.

History N/A