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PRODUCT IDENTIFICATION
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CAS NO.
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1317-38-0
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EINECS NO.
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215-269-1
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FORMULA
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CUO
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MOL WT.
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79.55
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TOXICITY
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Oral rat LD50: 470 mg/kg
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SYNONYMS
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copper(II) oxide; Copper oxide black;
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Black copper oxide; Chrome brown; C.I. 77403; Cupric (II) oxide; Copper monoxide; Copper CuO; Pigment black 15; Tenorite; Kupferoxid (German); óxido de cobre (Spanish); Oxyde de cuivre (1:1) (French);
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PHYSICAL AND CHEMICAL PROPERTIES
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PHYSICAL STATE
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Black powder
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MELTING POINT
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1326 C
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SPECIFIC GRAVITY
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6.30 - 6.40
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SOLUBILITY IN WATER
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Insoluble
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NFPA RATINGS
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Health: 2; Flammability: 0; Reactivity: 0
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FLASH POINT
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Not considered to be a fire hazard
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STABILITY
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Stable under ordinary conditions. Moisture Sensitive.
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GENERAL DESCRIPTION & APPLICATIONS
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There are two forms of cuprous oxide. Cuprous oxide ( copper (I) oxide Cu2O) is found in nature as cuprite and formed on copper by heat. It is a red color crystal used as a pigment and fungicide. It is used as an antifouling agent for marine paints. But it is not used on vessels with aluminium hulls. The copper is incompatible with aluminium. Cupric oxide ( copper (II) oxide CuO) is a black crystal. It is used in making fibers and ceramics, gas analyses and for Welding fluxes.
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SALES SPECIFICATION
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APPEARANCE
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Black powder
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CUPRIC OXIDE
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98.05 MIN
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TOTAL COPPER
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78.5% min
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ACID INSOLUBLES
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0.5% max
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PARTICLE SIZE
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325 mesh (99.5% min)
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PACKING
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25kgs or 50kgs in bag, 25kgs in drum
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