Zinc Oxide
Minerals & Trace Elements
Nutritional Enhancers
Colorants
1314-13-2
ZnO
$5.62 ~ $8.43
Food
Free sample from 100g(NF)
One unit of:25kg/bag
One unit of:25kg/bag
25kg/bag
Product Info
What is Zinc Oxide?
Zinc oxide is an essential nutrient source, recognized as a white inorganic compound used extensively in food fortification and dietary supplements to provide the necessary mineral zinc.
How is Zinc Oxide made?
| Step No. | Production Stage | Key Action | Control Point & Note |
|---|---|---|---|
| 1 | Raw Material Melting | Melt high-purity zinc metal ingots (Special High Grade - SHG) in a crucible or furnace. | Control Point: Purity of the zinc metal must be >99.99%. Monitor furnace temperature to ensure complete and efficient melting. Note: The purity of the final Zinc Oxide is directly determined by the quality of the starting raw material. |
| 2 | Vaporization | Heat the molten zinc to its boiling point (approx. 907°C) to create a continuous stream of zinc vapor. | Control Point: A stable and consistent furnace temperature is critical for a steady vaporization rate. The atmosphere inside the furnace must be controlled to prevent premature oxidation. Note: This is a high-energy consumption step. |
| 3 | Controlled Oxidation | Introduce the hot zinc vapor into an oxidation chamber where it reacts with a precisely controlled flow of preheated air. | Control Point: The ratio of zinc vapor to oxygen is the most critical process parameter. This directly influences primary particle size, shape, and surface area. Note: This is a highly exothermic reaction (2Zn + O₂ → 2ZnO) that generates significant heat. |
| 4 | Cooling & Collection | Transport the newly formed Zinc Oxide particles through a series of cooling ducts and collect the fine white powder in a baghouse filter system. | Control Point: The rate of cooling must be carefully managed to control particle agglomeration. Baghouse integrity is monitored to ensure high collection efficiency and prevent emissions. Note: This method is known as the "Indirect" or "French" process. |
| 5 | Post-Processing (Optional) | Mill, screen, or pelletize the collected ZnO powder to meet specific customer requirements for particle size distribution or bulk density. | Control Point: Milling parameters (time, speed) and screen mesh size are set to achieve the target particle size distribution (PSD). Note: This step customizes the product for diverse applications like rubber, ceramics, paints, and pharmaceuticals. |
| 6 | Quality Control & Packaging | Test the final product for key specifications (e.g., ZnO assay, heavy metals, surface area) and package it into sealed, moisture-proof containers. | Control Point: Conduct rigorous lab testing against product specifications. Ensure full batch traceability from raw material to finished product. Note: Proper packaging is essential to protect the product from moisture and contamination. |
Technical Specifications
| CAS Number | 1314-13-2 |
| Chemical Formula | ZnO |
| Solubility | insoluble in water (0.0004% at 17 °C); soluble in acids and alkalis |
| Storage Conditions | store in cool, dry, ventilated area, protect from light |
| Shelf Life | 24 Months |
Applications & Usage
Common Applications:
used in fortified foods and beverages
oral care
antimicrobial coatings
UV‑protective formulations
Mechanism of action:
| Parameter | Zinc Oxide |
|---|---|
| Functional Category | Nutrient Supplement (Mineral Source); Fortifying Agent; Colorant (Whitener) |
| Key Ingredients | Zinc Oxide (ZnO) |
| Mechanism of Action | As a fortificant, dissolves in gastric acid to release bioavailable zinc ions (Zn2+). These ions are absorbed in the small intestine and integrated into metabolic pathways, serving as a critical cofactor for numerous enzymatic reactions, protein synthesis, and immune system function. As a colorant, its fine particulate nature provides high opacity by scattering light, imparting a white color to food systems. |
| Application Effect in Product | Fortifies the final product with the essential mineral zinc, enabling nutritional claims and addressing dietary deficiencies. Imparts a bright, opaque white color in applications such as confectionery, icings, and sauces, improving visual appeal. Contributes to the overall nutritional profile of foods like cereals, baked goods, and dietary supplements. |
Comparison:
| Product Name | Category/Type | Key Features | Strengths (vs peers) | Weaknesses (vs peers) | Best Use Cases | Why Choose |
|---|---|---|---|---|---|---|
| Zinc Oxide | Physical (Mineral) Sunscreen Agent | Broad-spectrum UVA/UVB protection (290-400nm); skin protectant properties. | Offers the broadest UV spectrum protection of any single ingredient; extremely stable and gentle on skin. | Can leave a significant white cast; may feel thick or heavy on the skin. | Sensitive, reactive, or acne-prone skin; post-procedure care; children; anyone preferring a physical barrier. | For the most complete and gentle UV protection from a single, stable ingredient. |
| Titanium Dioxide | Physical (Mineral) Sunscreen Agent | Excellent UVB and short-wave UVA (UVA2) protection. | Very effective at preventing sunburn (UVB); generally more cosmetically elegant than zinc oxide. | Does not protect well against long-wave UVA (UVA1) rays on its own. | Sensitive skin; products where high SPF (UVB protection) is the primary goal; often combined with zinc oxide. | For high, stable, mineral-based UVB protection with a potentially better finish than zinc-only formulas. |
| Avobenzone | Chemical Sunscreen Agent (UVA Filter) | Absorbs the full UVA spectrum; converts UV radiation into heat. | Completely transparent on the skin (no white cast); provides excellent UVA protection. | Highly photounstable and degrades quickly unless paired with stabilizing ingredients. Higher potential for skin irritation. | Daily use sunscreens where cosmetic elegance is critical; must be in a well-formulated, stabilized product. | For a lightweight, invisible formula with strong UVA protection, provided skin is not sensitive. |
| Octinoxate | Chemical Sunscreen Agent (UVB Filter) | Strongly absorbs UVB radiation. | Lightweight and effective at preventing sunburn; common and inexpensive. | Offers no UVA protection; photounstable; environmental concerns (coral reefs); potential for skin allergies. | Products focused mainly on SPF value; often used in combination with other filters for broader protection. | For an inexpensive and cosmetically elegant UVB filter, if UVA protection and environmental impact are not primary concerns. |
| Tinosorb S (Bis-Ethylhexyloxyphenol Methoxyphenyl Triazine) | Modern Chemical Sunscreen Agent | Highly photostable, broad-spectrum UVA and UVB protection. | Extremely stable, covers the full UV spectrum, and helps stabilize other filters like Avobenzone. Low irritation potential. | Not approved as a sunscreen ingredient in the USA; can feel slightly heavier than older chemical filters. | Advanced sunscreens (common in Europe/Asia) for robust, long-lasting protection. | For state-of-the-art, highly stable, broad-spectrum chemical protection. |
Technical Documents
Available Documentation
COA, TDS available
Safety Data Sheet (SDS)
MSDS available
Certificate of Analysis (COA)
Quality assurance documentation
Technical Data Sheet
Detailed technical specifications