Barite Pigment, Size: 500 g

SKU: NAP-470-2050
    Unit Price
    Quantity
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    US$ 15.21
    US$ 15.21
    US$ 15.121%
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    Color
    White
    Processing time
    Usually ships the next business day.
    Pigment type
    Inorganic, Natural
    Description

    Rublev Colours Barite is made using the highest quality white, natural barium sulfate ore. Its fine grind (3-micron median particle size), high specific gravity (4.3–5), and inertness make it ideal for grounds, to make white paint in watercolor, casein, and egg tempera, and as an extender pigment in oils and alkyds.

    Pigment Names
    Mineral Names English: barite, baryte, bologna stone, bolognian spar, calk, cauk, cawk
    French: barytite, barytine
    German: Baryt, Schwerspath
    Italian: barite
    Japanese: 重晶石
    Russian: барит
    Spanish: barita
    Swedish: tungspat
    Synthetic Names English: blanc fixe
    French: blanc fixe, sulfate de barium
    German: Barytweiss, Permanentweiss
    Italian: sulfato de bario
    Russian: ланфикс баритовая сулъфат
    Spanish: blanco fijo

    Origin and History

    Barite is a mineral consisting of barium sulfate. The natural mineral is generally white or slightly colored due to the presence of impurities, and is the main source of barium. Baryte is the British spelling and the mineral is also called heavy spar. The radiating form of the mineral sometimes referred to as Bologna Stone, attained some notoriety among alchemists for the phosphorescent specimens found in the 1600s near Bologna, Italy by one Mr. Vincenzo Cascariolo.

    The name barite is derived from the Greek word βαρύς (heavy). In commerce, the mineral is sometimes referred to as "barytes." The term "primary barite" refers to the first marketable product, which includes crude barite (run of mine) and the products of simple beneficiation methods, such as washing, jigging, heavy media separation, tabling, flotation, and magnetic separation. Most crude barite requires some upgrading to minimum purity or density. Barite that is used as an aggregate in "heavy" cement is crushed and screened to a uniform size. Most barite is ground to a small, uniform size before it is used as a filler or extender, an addition to industrial products, or a weighting agent in petroleum well drilling mud.

    Source

    Barite commonly occurs in lead-zinc veins in limestone, in hot spring deposits, and with hematite ore. It is often associated with the minerals anglesite and celestine.& Barite is mined in Canada and Mexico and, in the United States in Arkansas, Missouri, Georgia, and Nevada. It is also prepared synthetically, called "blanc fixe," either by treating a solution of a barium salt with sodium sulfate or as a by-product in the manufacture of hydrogen peroxide.

    Permanence and Compatibility

    Barite is unaffected by dilute acids and alkalis. It is compatible with all pigments and in all vehicles.

    Oil Absorption and Grinding

    Barite absorbs 11 grams of oil per 100 grams of pigment. It readily mixes with oil and water to form a smooth paste.

    Toxicity

    Although barite contains a "heavy" metal (barium), it is not considered a toxic chemical by most governments because of its extreme insolubility. Care, however, should be used in handling the dry powder pigment to avoid breathing the dust.

    Rublev Colours Pigment: Barite

    Pigment Information
    Color: White
    Colour Index: Pigment White 22
    Chemical Name: Barium sulfate
    Chemical Formula BaSO4
    ASTM Lightfastness Rating
    Acrylic: Not rated
    Oil: Not rated
    Watercolor: Not rated
    Properties
    Purity: 98% BaSO4
    Specific Gravity: 4.50
    Density: 4.5 g/cm3
    Mohs Hardness: 3–3.5
    Refractive Index: nα= 1.634; nβ= 1.636-1.638; nγ= 1.646-1.648
    Median Particle Size: 3 microns
    Weight % Retained on 325 Mesh Sieve 0%
    Loose Dry Bulk Density: 75 lbs/ft3
    Compacted Dry Bulk Density: 115 lbs/ft3
    Weight/Solid Gallon: 135.82
    Bulking Value: 0.0279 gal
    Oil Absorption: 11 grams oil/100 grams pigment
    Shipping specs
    Weight
    1.1 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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