Iconography Pigment No 237 - Ultramarine Blue Dark - 50gr KREMER

• Color Family
  Blue
• Paco code
  9851059
• No.
  237
• Manufacturer
  Kremer
• Product Type
  Dry Pigments
• Barcode
  4501000000503
• Size
  50gr
• SKU
  SKONES-237-50
• Description
  Dry Pigment
• Color Name
  Μπλε Ούλτραμαριν Σκούρο T FR ***

Πληροφορίες Χρωστικής

• Pigment Name
  PB29-Ultramarine [Blue]
• Pigment type
  inorganic
• Chemical Name
  complex silicate of sodium and aluminum with sulfur
• Chemical Formula
  Na8-10Al6Si6O24S2-4 or Na6-8Al6Si6O24S2-4
• Properties

  Ultramarine is the standard warm blue, a brilliant blue pigment that has the most purple and least green in its undertone. It has a moderate to high tinting strength and a beautiful transparency. Synthetic Ultramarine is not as vivid a blue as natural Ultramarine. Ultramarine dries slowly in oil and tends to produce clean, though granular, washes in watercolor. French Ultramarine mixes well with Alizarin colors in oil and watercolor form to create a range of purples and violets. It can dull when mixed with white in acrylic form, but mixes well with other colors. The shade varies based on manufacturer. Considered a great color for glazes, it is not suitable for frescoing.

• Permanence

  Ultramarine has excellent permanence, although synthetic Ultramarine is not as permanent as natural Ultramarine. It may discolor if exposed to acid because of its sulfuric content.

• Toxicity

  Ultramarine has no significant hazards.

• History

  The name for this pigment comes from the Middle Latin ultra, meaning beyond, and mare, meaning sea, because it was imported from Asia to Europe by sea. It is a prominent component of lapis lazuli and was used on Asian temples starting in the 6th century. It was one of the most expensive pigments in 16th century Europe, worth twice its weight in gold, and so was used sparingly and when commissions were larger. Ultramarine is currently imitated by a process invented in France in 1826 by Jean Baptiste Guimet, making blue affordable to artists and extending the range of colors on their palettes.

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