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:
Zinc Oxide UI-I = 99.7%
1. Zinc Oxide UI-I 99.7% 2. User Industries Cosmetics 3. User Industries Plastics 4. User Industries Chemicals 5. User Industries - Glass & Ceramics
Zinc Oxide Grade UI-II (99.5%)
1. Zinc Oxide Grade UI-II (99.5%) 2. User Industries Paints 3. User Industries - Lubricant & Greases
Our comprehensive range of Zinc Oxide (ZnO) bears the following attributes:
Easy to prepare
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.
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. 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.