Chemical properties of Zinc oxide

Zinc oxide is a compound that has the chemical formula ZnO in which the Z stands for zinc and the O stands for oxygen. This means that zinc oxide consists of one atom of zinc and one atom of oxygen, which are bound together. Humans use zinc oxide in many different ways, including in diaper cream, sunblock, paint, rubber goods, and some paper coatings. It is even used in some foods. Despite the fact that it has so many uses, many people are most familiar with it in topical form.

ZnO is a white powder that is insoluble in water, and it is widely used as an additive in numerous materials and products including rubbers, plastics, ceramics, glass, cement, lubricants, paints, ointments, adhesives, sealants, pigments, foods (source of Zn nutrient), batteries, ferrites, fire retardants, and first-aid tapes. It occurs naturally as the mineral zincite, but most zinc oxide is produced synthetically.

Name:Zinc oxide

EINECS:215-222-5

Molecular Formula:ZnO

CAS Registry Number:1314-13-2

InChI:InChI=1/O.Zn/rOZn/c1-2

HS Code:28170000

Appearance:white powder

Molecular Weight:81.39

Density:5.6

Boiling Point:2360℃

Melting Point:1975℃

Flash Point:1436

Storage Temperature:Store in a tightly closed container. Store in a cool, dry, well-ventilated area away from incompatible substances.

Refractive index:2.008~2.029

Solubility:1.6 mg/L (29 ℃) in Water

Stability:Stable. Incompatible with magnesium, strong acids.

Chemical Properties: white powder

General Description :Crude zinc oxide is a yellow-gray granular solid with no odor. Zinc oxide has a specific gravity of 4.4. Zinc oxide is insoluble in water. The primary hazard is the threat posed to the environment. Immediate steps should be taken to limit its spread to the environment. Prolonged inhalation of the dust may result in metal fume fever with symptoms of chills, fever, muscular pain, nausea and vomiting.

Air & Water Reactions :Slowly decomposed(hydrolyzed) in water. Insoluble in water.

Reactivity Profile: Zinc Oxide is insoluble in water. What little solubility Zinc oxide has yields aqueous solutions that are neutral in pH. Intimate mixtures of zinc oxide and chlorinated rubber with or without hydrocarbons or chlorinated solvent react violently, even explosively upon heating. Slow addition of zinc oxide to cover the surface of linseed oil varnish caused generation of heat and ignition.

Fire Hazard: Some may burn but none ignite readily. Containers may explode when heated. Some may be transported hot.

Usage:Accelerator activator, pigment and reinforcing agent in rubber, ointments, pigment and mould-growth inhibitor in paints, uv absorber in plastics, ceramics, floor tile, glass, zinc salts, feed additive, dietary supplement, seed treatment cosmetics, photoconductor in office copying machines and in colour photography, piezoelectric devices, artists' colorant.

Zinc oxide may be found in many health care products. It is used, for example, in order to protect the skin from irritation. For this use, it is often found in diaper creams. It’s also used in special lotions that help soothe irritated, itchy skin as well as in preparations that are intended to soothe burns. An individual may also find zinc oxide in sunscreens, which have the job of protecting skin from the sun. Interestingly, this compound may even be included in some preparations that are used to treat the discomfort caused by hemorrhoids.