El Greco Iconography Pigment - Cadmium Red Light - 100gr

• No.
  26
• Manufacturer
  El Greco
• Product Type
  Dry Pigments
• Barcode
  5212016643552
• Color Family
  Red
• Paco code
  8311345
• Color Name
  Cadmium Red Light
• SKU
  ELGREC-400.100-26
• Size
  100gr
• Description
  Dry Pigment

Πληροφορίες Χρωστικής

• Pigment Name
  PW6-Titanium White
• Pigment type
  inorganic
• Chemical Name
  titanium dioxide
• Chemical Formula
  TiO2
• Properties

  Titanium White is the most brilliant of the white pigments. It is considered an all purpose oil color useful in all techniques and the best all around white. Its masstone is neither warm nor cool, placing it somewhere between Lead White and Zinc White. It is less prone to cracking and yellowing than Lead White, but it still yellows easily. Titanium White dries slowly in oil form, more slowly than Lead White but more quickly than Zinc White. It is opaque in oil and acrylic forms and semi-opaque in watercolor form. This pigment has good chemical stability, and its tinting strength is superior to both Lead White and Zinc White.

• Permanence

  Titanium White has excellent permanence and lightfastness.

• Toxicity

  Titanium dioxide is highly stable and is regarded as completely non-toxic. Animal studies do not indicate that it is absorbed biologically, even after long periods of exposure. The primary safety concern is with inhalation of fine pigment dust particles. If inhaled in large amounts over several years, Titanium White may cause benign pneumoconiosis visible on x-rays. The National Institute of Occupational Safety and Health (NIOSH) considers fine titanium dioxide particles, if inhaled, to be a human carcinogen. The primary concern for artists is to avoid exposure to fine particulate dust from raw pigments.

• History

  Titanium is the ninth most abundant element in the Earth's crust, however mineral deposits that are economical to mine are less common. Titanium dioxide was first discovered in 1821, although it could not be mass produced until 1919. Widespread use of the pigment began in the 1940s. Since that time, it has become the most commonly used white pigment. The name comes from the Latin word Titan, the name for the elder brother of Kronos and ancestor of the Titans, and from the Greek word tito, meaning day or sun.

• Pigment Name
  PR112-Naphthol Red AS-D
• Pigment type
  organic, monoazo
• Chemical Name
  -
• Chemical Formula
  C24H16Cl3N3O2
• Properties

  This Naphthol Red is an intense scarlet red pigment that is heavily staining. It has an average drying time. It is semi-transparent and has relatively poor covering power.

• Permanence

  This Naphthol Red has been rated as having excellent lightfastness under ASTM testing, but other testing methods have demonstrated some tendancy for the color to fade with exposure to strong ultraviolet light. It has been considered a replacement for less lightfast naphthol reds such as PR3. Not suitable for exterior use.

• Toxicity

  -

• History

  -

• Pigment Name
  PR254-Pyrrole Red
• Pigment type
  organic, aminoketone
• Chemical Name
  Bis-(p-chrolopheny)-1. 4-diketopyrrolo(3. 4-c)pyrrole
• Chemical Formula
  -
• Properties

  Pyrrole Red is opaque and has strong covering power. According to manufacturer Ciba, which uses the trade name Irgazin Red, it is a “clean, highly saturated mid shade red with high temperature resistance, excellent color strength, outstanding chemical, solvent and bleed resistance, and good weatherfastness.

• Permanence

  Pyrrole Red is considered to have excellent lightfastness among organic pigments in its class. Tests in industrial applications have given it scores of 7-8 on the Blue Wool Scale.

• Toxicity

  According to the Australian government's Ministry on Health and Aging, The notified chemical exhibited low oral and dermal toxicity in rats, did not exhibit toxic effects when administered orally to rats for 28 days, was not a skin irritant in rabbits.

• History

  Pyrrole Red, used as an automotive paint and as a colorant in plastics, was developed as one of a range of pigments to replace lead based pigments. In art materials, it is often used as a synthetic and lightfast replacement for carmine, a laked pigment that was originally produced from the body of the cochineal insect. It is also used to replace the older naphthol reds, organic red pigments that are sometimes only marginally lightfast and weatherfast.

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