Iconography Pigment No 34 – Green Umber - 50gr

• No.
  34
• Manufacturer
  Sennelier
• Product Type
  Dry Pigments
• Barcode
  3400500
• Color Name
  Όμπρα Πράσινη S/O FR ***
• Color Family
  Green
• Paco code
  7101878
• SKU
  SKONES-34-50
• Size
  50gr
• Description
  Dry Pigment

Πληροφορίες Χρωστικής

• Pigment Name
  PBr7-Raw Umber
• Pigment type
  earth
• Chemical Name
  hydrated iron oxide
• Chemical Formula
  α-FeO3+(OH) or Fe2O3 × MnO2
• Properties

  Raw Umber is a cool, transparent brown ranging from yellowish brown to greenish brown. It has surprisingly good tinting strength, a high level of opacity, mixes well with greens, and is quick drying in oil form. It has excellent color properties and can create a variety of subtle, clear tints when mixed with white. It grays when mixed with blue and white. Raw Umber can tend towards chalkiness in dark mixes in oil form.

• Permanence

  Raw Umber has excellent permanence.

• Toxicity

  Raw Umber itself is considered non-toxic. If contaminated by manganese compounds, it may be highly toxic if inhaled and moderately toxic if ingested.

• History

  This pigment gets its name from the Latin word umbra, meaning shadow or shade. Its full name is listed as terra di ombra, meaning earth of shadow/shade, due to its original extraction from the area of Umbria, Italy. It has been used as a pigment since prehistoric times. Currently, the finest umber comes from Cyprus.

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