Iconography Pigment No 245 - Cobalt Blue - 25gr KREMER

• Color Family
  Blue
• Paco code
  9851079
• No.
  245
• Manufacturer
  Kremer
• Product Type
  Dry Pigments
• Barcode
  004571000254
• Size
  25gr
• SKU
  SKONES-245-25
• Color Name
  Μπλε Κοβαλτίου FR ***
• Description
  Dry Pigment

Πληροφορίες Χρωστικής

• Pigment Name
  PB28-Cobalt Blue
• Pigment type
  inorganic
• Chemical Name
  cobalt(II) oxide + aluminum oxide
• Chemical Formula
  CoO + Al2O3
• Properties

  Cobalt blue is a semitransparent pigment with low to moderate tinting strength. When it dries, it appears lighter and less saturated. Pigment particles are large and grainy. Differences in how the pigment is ground and mixed lead to considerable differences in its performance among various manufacturers.

• Permanence

  Cobalt blue is absolutely lightfast and extraordinarily stable. The stability of cobalt salts at high temperatures make them the standard for blues used in ceramics and glassware.

• Toxicity

  Cobalt salts are toxic. Avoid respiratory and skin contact. Soluble cobalt may cause irritation and allergic reaction through contact with skin. It is considered a possible carcinogen.

• History

  Since ancient times, smalt blue has been used to color glass and ceramics. Cobalt salts, which give smalt its characteristic blue color, were identified in the 18th century. Techniques for manufacturing Cobalt Blue, a chemically pure salt of cobalt and aluminum oxide, were developed in 1802.

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