Zinc oxide

First, Basic Information

1. Chemical Formula and English Name: Chemical formula is ZnO; English name is Zinc oxide.

2. Synonyms: Zinc oxide powder, zinc white, zinc white powder, zinc blende, subblende, zinc white silver, zinc monoxide, smithsonite, etc.

3. CAS Number: 1314-13-2.

Second, Physical Properties

1. Appearance: At room temperature, it appears as white hexagonal crystalline crystals or powder, odorless, with a fine texture.

2. Melting Point and Boiling Point: Melting point is 1975°C, boiling point reaches 2360°C.

3. Density: Relative density (water = 1) is 5.606.

4. Solubility: Sparingly soluble in water and ethanol; soluble in acids, sodium hydroxide solution, and ammonium chloride solution. Classified as an amphoteric oxide.

5. Refractive Index: 2.008 - 2.029.

Third, Chemical Properties

1. Stability: Chemically stable, but absorbs carbon dioxide and water in air to form zinc carbonate. It turns yellow when heated but reverts to white upon cooling.

2. Acid-Base Properties: Amphoteric; reacts with acids to form salts and water (e.g., reacts with hydrochloric acid to produce zinc chloride and water) and with strong bases to form zincates and water (e.g., reacts with sodium hydroxide to produce sodium zincate and water).

Fourth, Primary Applications

1. Rubber Industry: An essential additive in rubber manufacturing, serving as a reinforcing agent and activator to enhance rubber's abrasion resistance, tear resistance, and tensile strength. Also functions as a whitening agent for white rubber compounds.

2. Coatings Industry: Used as a pigment in paints, offering excellent hiding power and weather resistance. Improves coatings' corrosion resistance and anti-chalking properties.

3. Pharmaceutical Industry: Commonly used in ointments, zinc paste, and adhesive plasters for its astringent, antiseptic, and skin-protective properties. Also serves as a pharmaceutical excipient, functioning as a filler and antimicrobial agent.

4. Electronics Industry: Applied in semiconductor products such as liquid crystal displays, thin-film transistors, and light-emitting diodes. Microparticulate zinc oxide, as a nanomaterial, also plays a role in related electronic fields.

5. Cosmetics Industry: A key ingredient in sunscreen products, it absorbs and scatters ultraviolet rays to provide sun protection while causing minimal skin irritation.

6. Other Applications: Used for desulfurization in synthetic ammonia, petroleum, and natural gas chemical feedstocks; as a zinc supplement in feed processing; and as a matrix for analytical reagents, reference standards, fluorescent agents, and photosensitive materials.

Fifth, Safety

1. Health Hazards: Inhalation of zinc oxide fumes may cause zinc foundry fever, presenting symptoms such as metallic taste in the mouth, thirst, dry throat, loss of appetite, chest tightness, dry cough, headache, dizziness, limb soreness, high fever, and chills. Large-scale ingestion may lead to gastrointestinal discomfort including nausea, vomiting, abdominal pain, and diarrhea.

2. Protective Measures: Operators should wear self-filtering dust masks, chemical safety goggles, impervious work clothing, and rubber gloves. Maintain good ventilation in work areas to minimize dust generation. Handle materials gently during transport to prevent damage to packaging and containers.

Shandong Jiurunfa Chemical Technology Co., Ltd. is an energy and chemical enterprise engaged in the research, development, production, sales and service of industrial gases, special gases, mixed gases and chemical products. If you need Zinc oxide, please contact us.

Zinc oxide cas

Zinc oxide ointment