ZINC OXIDE
High Quality General Reagent Grade
Zinc Oxide ( ZnO ) occurs as white powder known as zinc white or as the mineral zincite.
Zinc oxide is an amphoteric oxide. It is only very slightly soluble in water and alcohol, but it is soluble in most acids such as hydrochloric acid or nitric acid. When it reacts with phosphoric acid it produces hard cement like compounds.
Zinc oxide is used in cosmetics and personal care products including, creams, lotions and ointments. It is found in sunscreen products, antidandruff preparations and barrier creams etc.
The powder is widely used as an additive into numerous materials and products including plastics, ceramics, glass, cement, rubber (e.g., car tyres), lubricants, paints, ointments, adhesives, sealants, pigments, batteries, ferrites, fire retardants, first aid tapes, etc.
Because of its large direct band gap (3.3 eV) at room temperature zinc oxide offers many advantages with regards its electronic properties. These include higher breakdown voltages, ability to sustain large electric fields, lower electric noise, and high-temperature and high-power operation.
Properties of Zinc Oxide:
- Other Names: Zinc Oxide, Zinc white, Calamine, zincite, flowers of zinc
- CAS No: 1314-13-2
- EINECS No: 215-222-5
- Formula: ZnO
- Molar mass: 81.41 g/mol
- Assay: 98-100%
- Physical state: white powder
- Specific gravity: 5.61 g/cm3
- Melting Point: 1975 oC decomposes
- Boiling Point: 2360 oC
- Solubility: 0.16 mg/100 mL (30 oC)
Specification of Zinc Oxide:
- Assay: 99.9%
- Loss on ignition @500°C: 0.15%
- Cadmium: 3ppm
- Lead: 15ppm
- Surface area (m2/g): 4.5
- Particle size (microns): 0.24
- Density: 1.8
- Screen test through 325mesh (%): 99.995
Common Uses of Zinc Oxide
1. Skincare and Cosmetics
- Sunscreens: Acts as a physical UV filter, blocking both UVA and UVB rays.
- Diaper Rash Creams & Baby Products: Used in ointments to soothe and protect sensitive skin.
- Acne & Skincare Products: Helps control oil production, reduce irritation, and treat mild acne.
- Foundation & Makeup: Provides mattifying properties and sun protection in face powders and foundations.
2. Pharmaceuticals & Medicinal Uses
- Wound Healing & First Aid Creams: Used in antiseptic creams to aid in skin regeneration.
- Antibacterial & Anti-inflammatory Agent: Helps treat eczema, psoriasis, and minor burns.
- Calamine Lotion: Often combined with iron oxide in calamine lotion to soothe itchy skin.
3. Rubber and Plastic Industry
- Vulcanization of Rubber: Used as an activator in the rubber industry to improve elasticity and durability.
- Plastics & Coatings: Enhances UV resistance and stability in plastic products.
4. Paints & Coatings
- White Pigment: Used as a non-toxic alternative to lead-based pigments in paints.
- Anti-Corrosive Agent: Prevents rust in metal coatings.
5. Electronics & Semiconductors
- Varistors & Transistors: Used in ceramic and semiconductor components.
- Transparent Conductive Films: Found in touchscreens and displays.
7. Glass & Ceramics Industry
- Glass Manufacturing: Improves transparency and UV-blocking properties in glass.
- Glazes & Enamels: Used in ceramic coatings for shiny finishes.
8. Textile Industry
- Anti-Bacterial Textiles: Added to fabrics to create odor-resistant and antibacterial clothing.
- UV Protection in Fabrics: Enhances UV resistance in outdoor and sportswear.
PLEASE NOTE: This product is not for human or animal consumption.