High Purity Barium Carbonate Powder 99.2% Purity 4.286 G/Cm3 Density

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Supply industry grade high purity Barium Carbonate 99.2% Barium carbonate ([Ba][CO3]), also known as [witherite], is a [chemical] compound used in [rat poison], [bricks], ceramic glazes and cement. Witherite crystallizes in the [orthorhombic] system. The [crystals] are invariably twinned together in groups of three, giving rise to pseudo-hexagonal forms somewhat resembling bipyramidal crystals of [quartz], the faces are usually rough and striated horizontally. It transforms into an hexagonal phase at 1084 K that changes into a cubic phase at 1254 K Witherite The mineral is named after [William Withering], who in 1784 recognized it to be chemically distinct from [barytes]. It occurs in veins of [lead] [ore] at [Hexham] in [Northumberland], [Alston] in [Cumbria], [Anglezarke], near [Chorley] in [Lancashire] and a few other localities. Witherite is readily altered to barium [sulfate] by the action of water containing [calcium sulfate] in solution and crystals are therefore frequently encrusted with [barytes]. It is the chief source of barium [salts] and is mined in considerable amounts in Northumberland. It is used for the preparation of rat poison, in the manufacture of [glass] and [porcelain], and formerly for refining [sugar]. It is also used for controlling the [chromate] to [sulfate] ratio in [chromium] [electroplating] baths. - - - - Specifications | Item | Specification for Fine Grade | Specification for First Grade | Specification for Regular Grade | Purity(BaCO3) | 99.2% | 99% | 98.5% | Moisture | 0.3% | 0.3% | 0.3% | SO4 | 0.25% | 0.35% | 0.45% | Iron(Fe) | 0.004% | 0.004% | 0.008% | HCL insoluble Matter | 0.15% | 0.25% | 0.50% | Bulk Density(powder) | Light Powder 0.40 g/cm3 Dense Powder 1-1.2 g/cm3 | Particlle Size(Granule) | 850micron:1% 150micron :75% | - - - - Uses Barium carbonate is widely used in the ceramics industry as an ingredient in glazes. It acts as a flux, a matting and crystallizing agent and combines with certain colouring oxides to produce unique colours not easily attainable by other means. Its use is somewhat controversial since some claim that it can leach from glazes into food and drink. To provide a safe means of use, BaO is often used in [fritted] form. In the brick, tile, earthenware and pottery industries barium carbonate is added to clays to precipitate soluble salts ([calcium sulfate] and [magnesium sulfate]) that cause [efflorescence].

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Shanghai Yixin Chemical Co., Ltd.

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