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Natural Pigments Barite 5kg

SKU: NAP-470-205K
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Description
Details Rublev Barite is made using the highest quality white, natural barium sulfate ore. Its unique properties of fine grind (3 micron median particle size), high specific gravity (4.4) and chemical inertness make it ideal for grounds, to make white paint and as paint filler.

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. It is generally white or colorless, and is the main source of barium. Baryte is the British spelling and the mineral is also called heavy spar. The radiating form, 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.


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: 4.40
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%
Dry Bulk Density Loose: 75 lbs/ft3
Compacted: 115 lbs/ft3
Weight/Solid Gallon: 135.82
Bulking Value: 0.0279 gal
Oil Absorption: 11 grams oil/100 grams pigment




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This product is shipped from our warehouse in Willits, CA, USA.
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This product is brand new and includes the manufacturer's warranty, so you can buy with confidence.
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