Zinc Oxide Introduction
Zinc oxide (also known as zinc oxide powder, zinc white, zinc white
powder) is an inorganic compound with a chemical formula of ZnO and
a molecular weight of 81.39 g/mol. It is a white solid and a form
of zinc oxide. Zinc oxide is insoluble in water and ethanol, but
soluble in acid, sodium hydroxide aqueous solution, and ammonium
chloride. It is a commonly used chemical additive and is widely
used in the production of plastics, silicate products, synthetic
rubber, lubricants, paints, ointments, adhesives, food, batteries,
flame retardants and other products.
Zinc Oxide Parameters
| Parameter Name | Unit | Value Range/Description |
| Chemical Formula | - | ZnO |
| Molecular Weight | g/mol | 81.39 |
| Appearance | - | White powder or hexagonal crystals |
| Density | g/cm³ | Approximately 5.60-5.67 (varies with preparation method and purity) |
| Melting Point | °C | 1975 |
| Boiling Point | °C | 2360 (sublimes) |
| Refractive Index | - | Approximately 2.008-2.029 (varies with wavelength) |
| Band Gap | eV | Approximately 3.37 (at room temperature) |
| Purity | % | 99.0%-99.99% (depending on application requirements) |
| Particle Size Distribution | nm | Various sizes available, such as 20nm, 50nm, 100nm, 1μm, etc. |
| Specific Surface Area | m²/g | Typically in the range of 10-150m²/g, depending on particle size |
| Hygroscopicity | - | Low hygroscopicity, but may absorb moisture over time if exposed to
humid conditions |
| Solubility | - | Insoluble in water, slightly soluble in alcohols, soluble in dilute
acids, sodium hydroxide solutions, and ammonium chloride solutions |
| Thermal Stability | - | Stable at high temperatures, but prolonged exposure to high
temperatures may cause discoloration or phase transformation |
| Electrical Conductivity | S/m | As a semiconductor, electrical conductivity varies with doping and
temperature |
| UV Absorption | - | Effectively absorbs UVA and UVB ultraviolet radiation, providing
good sunscreen properties |
| Antibacterial Properties | - | Inhibits the growth of various bacteria and fungi, suitable for
antibacterial materials |
Characteristics of zinc oxide
1.High chemical stability: able to remain stable in harsh
environments such as high temperature, high pressure, strong acid,
strong alkali, etc.
2.Good electrical conductivity: suitable for electronics,
communications, electricity and other fields.
3.Unique physical properties: high refractive index, low dielectric
constant, high light transmittance, etc.
4.Environmentally friendly and non-toxic: harmless to the human
body and the environment.
5.Skin protection: has anti-inflammatory, antibacterial, wound
healing and sun protection effects.
Advantages
Broad Application Fields: Suitable for plastics, silicate products,
synthetic rubber, lubricating oils, paints and coatings, ointments,
adhesives, foods, batteries, flame retardants, and many other
products.
Excellent Luminescent Properties: Applied in semiconductor products
such as liquid crystal displays (LCDs), thin-film transistors
(TFTs), and light-emitting diodes (LEDs).
Effective Sunscreen Agent: Capable of absorbing ultraviolet (UV)
radiation, providing broad-spectrum UV protection (both UVA and
UVB).
Application Fields
Rubber Industry: Acts as a reinforcing agent and activator,
enhancing rubber's elasticity and abrasion resistance.
Cosmetics: Offers oil absorption and concealing properties,
suitable for sensitive skin.
Semiconductor Field: Used in the manufacture of LCDs, TFTs, LEDs,
and other products.
Pharmaceutical Industry: Utilized in the production of ointments
and sunscreens, providing skin protection and sunscreen effects.
Eco-friendly Materials: Used in the production of eco-friendly
paints and plastics.
Theory
Zinc oxide belongs to the N-type semiconductor category, exhibiting
excellent luminescent properties at room temperature. It has a
large energy band gap and exciton binding energy, resulting in high
transparency. The principle of zinc oxide absorbing UV radiation is
that electrons in the valence band can absorb energy from UV
radiation and undergo transitions. The function of scattering UV
radiation is related to the particle size of the material, with
nanoscale particles offering significant advantages.
Services
Customized Production: Offers products with different particle size
specifications according to customer requirements.
Technical Support: Provides professional technical consultations
and solutions.
After-Sales Support: Offers comprehensive after-sales service to
ensure customer satisfaction.
Packaging and Storage
Packaging: Uses sealed packaging to ensure the product remains free
from moisture and contamination.
Storage: Should be stored in a dry, well-ventilated, cool place,
avoiding direct sunlight and high temperatures.
Preventive Measures
Skin Contact: Wear protective gloves during use to avoid prolonged
skin contact.
Eye Contact: If it accidentally splashes into the eyes, rinse
immediately with plenty of water and seek medical attention.
Respiratory Protection: Wear a dust mask during operation to avoid
inhaling dust.
Fire Precautions: Although zinc oxide is non-flammable, it should
be kept away from fire sources and flammable materials.
