Over the years we have successfully claimed the market credibility and the reliance of our esteemed clients by offering an outstanding gamut of Zinc Oxide including- Zinc Oxide 99.7%, Zinc Oxide Grade (99.5%), Zinc Oxide Grade (99.0%) and Zinc Oxide Grade (97.0%). Our entire range includes:
Our comprehensive range of Zinc Oxide (ZnO) bears the following attributes:
• Inorganic compound • Inexpensive • Relatively abundant • Chemically stable • Easy to prepare • Non-toxic • Replacement for toxic, expensive transistors in the LED space • Can be processed using various manufacturing process • Impedes the growth of fungi, mildew and mold • Exhibits semi conducting, piezoelectric, and pyroelectric multiple properties
Following are some of its Chemical & Physical Properties:
• Molecular weight: 81.37 • Boiling point: Sublimes at normal pressure. • Specific gravity: 5.607 at 20 degrees C (68 degrees F • Density: 5.606gm/cm¿¿¿, Solid • Melting point: 1975 degrees C (3587 degrees F) • Vapor pressure: < 0 (mm Hg) • Solubility: Practically insoluble in water; soluble in dilute acetic or mineral acids, ammonia, ammonium chloride, ammonium carbonate, and fixed alkali solutions; insoluble in alcohol. • Evaporation rate: By use of a mass spectrographic method, the rate of evaporation of zinc oxide is measured as a function of temperature both with and without electron bombardment of the surface being evaporated. A definite increase was observed in the evaporation of zinc oxide. The enhancement of the evaporation rate of zinc oxide increases slowly at first and then rapidly with increasing temperature. • pH: 6.95
Chemical Data:
• ZnO occurs as white powder commonly known as zinc white or as the mineral zincite. The mineral usually contains a certain amount of manganese and other elements and is of yellow to red color.[2] Crystalline zinc oxide is thermochromic, changing from white to yellow when heated. • Zinc oxide is an amphoteric oxide. It is nearly insoluble in water and alcohol, but it is soluble in (degraded by) most acids, such as hydrochloric acid:
ZnO + 2 HCl → ZnCl2 + H2O
• Bases also degrade the solid to give soluble zincates:
ZnO + 2NaOH + H2O → Na2 (Zn (OH) 4)
• ZnO reacts slowly with fatty acids in oils to produce the corresponding carboxylates, such as oleate or stearate. ZnO forms cement-like products when mixed with a strong solution of zinc chloride or with phosphoric acid, owing to formation of oxysalts. • ZnO decomposes into zinc vapor and oxygen only at around 1975°C, reflecting its considerable stability. Heating with carbon converts the oxide into zinc vapor
ZnO + C → Zn + CO
• Zinc oxide reacts violently with aluminum and magnesium powders, with chlorinated rubber and linseed oil on heating causing fire and explosion hazard.
