Zinc Oxide
Premium Zinc Oxide for Industrial and Cosmetic Applications
Zinc Oxide (ZnO) is a versatile inorganic compound widely used in various industries. Our high-purity Zinc Oxide meets international quality standards and offers exceptional performance characteristics.
Key Specifications:
- Chemical Formula: ZnO
- Purity: 99.7% min
- Appearance: White powder
- Specific Gravity: 5.606 g/cm³
- Melting Point: 1975°C
- Refractive Index: 2.008
- Solubility: Insoluble in water and alcohol, soluble in acids and alkalis
Technical Parameters
| Parameter | Standard Grade | Premium Grade | Pharma Grade |
|---|---|---|---|
| ZnO Content (%) | ≥99.5 | ≥99.7 | ≥99.9 |
| Pb (ppm max) | 10 | 5 | 2 |
| Cd (ppm max) | 5 | 3 | 1 |
| Particle Size (nm) | 100-200 | 50-100 | 30-50 |
Zinc Oxide FAQ Section
What are the primary uses of Zinc Oxide?
Zinc Oxide has diverse applications across multiple industries. In cosmetics, it serves as a UV filter in sunscreens. The rubber industry uses it as an activator in vulcanization processes. Pharmaceutical applications include antiseptic ointments and medical dressings. Additionally, it's used in paints, ceramics, and as a catalyst in chemical manufacturing.
How does Zinc Oxide provide sun protection?
Zinc Oxide offers broad-spectrum UV protection by reflecting and scattering both UVA (320-400nm) and UVB (290-320nm) radiation. Unlike chemical absorbers, it provides immediate protection upon application and is photostable, meaning it doesn't degrade under sunlight exposure. Its micronized form allows for transparent application while maintaining effectiveness.
Grades and Applications
| Grade | Characteristic | Typical Applications |
|---|---|---|
| Industrial Grade | Standard purity, larger particle size | Rubber vulcanization, ceramics, paints |
| Cosmetic Grade | Micronized particles, high brightness | Sunscreens, makeup, skincare products |
| Pharmaceutical Grade | Highest purity, nano particles | Medicated creams, wound healing, antiseptics |
Is Zinc Oxide safe for skin application?
Zinc Oxide is recognized as safe for topical use by regulatory agencies worldwide. It's non-comedogenic, hypoallergenic, and non-irritating for most skin types. Unlike chemical sunscreens, it doesn't penetrate the skin barrier, making it ideal for sensitive skin and children. Cosmetic-grade Zinc Oxide undergoes rigorous testing for heavy metal content to ensure safety.
Storage and Handling
- Store in cool, dry conditions away from moisture
- Keep containers tightly sealed to prevent contamination
- Recommended storage temperature: below 30°C
- Shelf life: 24 months from production date
Our Zinc Oxide manufacturing process utilizes advanced technology to ensure consistent quality across all batches. We offer customized solutions including particle size adjustment, surface treatments, and specialized packaging to meet specific application requirements.