Orpiment Pigment, Size: 10 G Jar

SKU: NAP-430-2001
    Unit Price
    Quantity
    Subtotal
    US 29.53$
    US 29.53$
    US 29.35$1%
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    Color
    Yellow
    Processing time
    Usually ships the next business day.
    Pigment type
    Inorganic, Natural
    Description

    WARNING! CONTAINS ARSENIC. Please read the for cautionary statements.

    Orpiment is yellow arsenic sulfide, usually described as a lemon or canary yellow or sometimes as a golden or brownish yellow. It is designated as brilliant yellow in Munsell notation 4.4Y 8.7/8.9. Our orpiment is made from natural mineral sources near Kadamdzhay in Kyrgyzstan or Hubei Province, China, and is an intensely bright pigment of crystalline particles.

    Pigment Names
    Mineral Names: Chinese: ci huang or shi huang (pinyin), tz'u huang or shih huang
    English: orpiment
    French: orpiment
    German: Rauschgelb, Operment
    Italian: orpimento
    Japanese: shiō, kiō, sekiō
    Russian: аурипигмент
    Spanish: oropimente
    Artificial Pigment Names: English: king's yellow
    French: juane royal, orpin artificiel
    German: Königsgelb
    Russian: желтый мышьяк
    Synonyms: English: arrhenicum, arsenic trisulfide, arsenikon, auripigment, auripigmento, auripigmentum, jalde, operment, oropiment, yellow arsenic
    French: arsenic jaune, arsenic sulfuré jaune
    German: Arsenblende, Arsenikon, Auripigment, Gelbe Arsenblende
    Greek: studied the mechanisms of deterioration in orpiment. Several medieval painting guides do not recommend mixing orpiment with lead white, red lead, or verdigris. However, it must also be noted that it has been identified in paintings mixed with indigo, red iron oxide, azurite, Prussian blue, green bice (artificial malachite), and bice (smalt). It cannot be applied to wet plaster and hence is not recommended in wet fresco painting techniques. Oil Absorption and Grinding

    No data has been published on the oil absorption properties of orpiment. It isn't easy to grind because of its micaceous structure. For this reason, it is often relatively coarse. Adding ground glass to the pigment has been suggested to facilitate grinding and dispersion in linseed oil.

    Toxicity

    The toxicity of arsenic sulfide pigments has been known for years. Extreme caution must be used when handling the dry orpiment pigment and in any soluble form to avoid inhaling the dust or ingesting it.


    Pigment: Orpiment

    Pigment Information
    Color: Yellow
    Colour Index: Pigment Yellow 39 (77085, 77086)
    Chemical Name: Arsenic(III) Sulfide
    Chemical Formula: As2S3
    ASTM Lightfastness Rating
    Acrylic: Not Rated
    Oil: Not Rated
    Watercolor: Not Rated
    Properties
    Density: 3.49 g/cm3
    Hardness (Mohs): 1.5–2.0
    Refractive Index: nα = 2.400 nβ = 2.810 nγ = 3.020
    Shipping specs
    Weight
    0.22 lbs
    Shipping from
    This product is shipped from our supplier's warehouse in Willits, CA, United States
    Our guarantee
    This product is brand new and includes the manufacturer's warranty, so you can buy with confidence.
    A 25% handling charge is levied against all authorized returns except those due to our error. Unauthorized returns are subject to a 40% handling charge. Damages & defects must be reported to us within 14 days.
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