Pure Zinc Oxide Powder

Pure Zinc Oxide Bulk Powder | High‑Purity USP Cosmetic & Industrial Grade Zinc Oxide Supplier

Shaanxi Hongda Phytochemistry Co., Ltd. is a reputed producer and supplier of high quality product . Available in constant 99% purity grades, the Pure Zinc Oxide Powder conforms to strict International Standards. We have more than 20 years of production experience since 2001. Our 20,000 square meters plant uses advanced processing technology and 100,000-level purification workshops to produce industrial grade zinc oxide, which can effectively solve the key formulation challenges for pharmaceuticals, cosmetics and industry. We provide excellent particle size distribution, low heavy metal levels with third party validation and guarantyd batch to batch consistency. This allows producers to produce an improved product performance, while meeting regulatory requirements in international markets.

Introduction of the product

Bulk zinc oxide is a basic inorganic chemical compound with the chemical formula Zn, which is well known for its many functional qualities in a broad range of industrial applications. Our production method produces crystalline white powder with regulated particle shape and surface properties optimised for particular end use requirements. The substance is characterised by good thermal stability, UV blocking qualities and anti-microbial properties that make it necessary in protective coatings, personal care formulations and medicinal preparations. With precision-controlled synthesis and stringent quality verification methods, we provide the product that consistently fulfils USP, BP and EP pharmacopeial criteria while exhibiting outstanding physical flow characteristics critical for automated processing equipment.

Product Specification

Pure Zinc Oxide Powder Advantages

Pharmaceutical-Grade Purity: Our Zinc oxide powder is made in cGMP and ISO22000-certified systems and reliably achieves assay results of 99%+ validated by atomic absorption spectroscopy, eliminating formulation variability that might impede medicinal efficacy.

Optimised particle engineering management of crystallisation processes produces uniform particle distributions with high specific surface area (15-25 m2/g) for rubber vulcanisation, catalytic conversions, and dermatological absorption profiles.

Regulatory Compliance: Complete paperwork packages include DMF compatible standards, allergy declarations, BSE/TSE statements, and Certifications to satisfy HALAL, KOSHER, and ORGANIC formulation needs for foreign markets.

Superior Stability Profile: Moisture content below 1.0% and protective Packaging techniques contribute to a 36-month shelf stability with no caking, colour shift or reactivity changes when stored under regulated circumstances.

Application of Pure Zinc Oxide Powder

Pharmaceutical Formulations: Shaanxi hongda's zinc oxide powder was used as an active ingredient in topical formulations for the treatment of dermatitis, nappy rash and minor skin irritations, due to its astringent and mild antiseptic qualities and well-established safety profiles.

Cosmetic Manufacturing: Serves as a physical UV filter in sunscreen formulations to provide broad-spectrum protection, while imparting mattifying properties and sebum control in colour cosmetics and daily skincare products.

Industrial Coating Systems: Used as a corrosion inhibiting pigment in protective paints and marine coatings . It also assists in imparting flame retardancy and better weathering resistance to polymer composite products.

Rubber Processing: Pure Zinc Oxide Powder is a required vulcanisation activator, enhancing cross-linking efficiency, heat dissipation property and ageing resistance in tyre manufacturing and technical rubber products manufacture.

Manufacturing Process

Step 1 - Raw Material Selection: Spectroscopic measurement of high purity zinc sources confirms elemental composition, with base material purity of 99.7% zinc content.

Step 2 - Thermal Oxidation: The metallic zinc vapour is oxidised to zinc oxide by controlled combustion at strictly controlled temperatures (950-1100°C) which yields a consistent crystalline structure with appropriate morphological properties.

Step 3 - Collection & Cooling: Our patented multi-stage cyclone separation system collects ultra-fine particles in staged cooling chambers to avoid agglomeration and preserve the desired particle size requirements.

STEP 4 - MILLING AND CLASSIFICATION Jet milling technology decreases the particle size and air classification divides the required size fractions in order to match the technical grade specifications.

Step 5 - Quality Verification: Multi-point sampling and full analytical testing to ensure chemical purity, physical characteristics and absence of contamination prior to final packing clearance.

Third Test Report

Our goods undergo heavy metal testing by third-party laboratories, SGS and Eurofins, to verify lead content is <5ppm, arsenic <3ppm, and cadmium <2ppm, meeting EU and FDA safety guidelines for pharmaceutical-grade materials.

Microbiological safety: Plate count <1000 CFU/g, yeast and mould <100 CFU/g. Manufacturing batches lack traceable E.coli, Salmonella, and Staphylococcus aureus.

Particle Size Distribution: Laser diffraction study verifies D50 values in the range 0.3-1.5μm depending on grade specification guaranteeing appropriate dispersion properties and surface area efficiency for catalytic and formulation applications.

OEM/ODM support

unique Formulation Development: Our 20+ academics develop unique mixes with your target actives, optimise solubility enhancers, and construct controlled-release matrices for precise therapeutic windows.

Flexible Manufacturing Scale: From 100kg pilot batches to 3,000 tonnes per year, production capacity facilitates market testing and commercial launch without reformulation.

Private Label package: Full package customisation includes nitrogen flushed aluminium foil bags, fibre drums with PE liners and client branded labelling to suit destination country regulatory labelling needs.

Technical Documentation Support: Complete support on stability data, compatibility testing, recommended use methods, and regulatory dossier components to speed up your product registration processes in your target markets.

Why Choose Us

Shaanxi Hongda operates the largest independent plant in China for manufacture of mineral compounds, with 20 years of manufacturing expertise and state of the art analytical capabilities. Our investment in automated quality control systems, cooperation with university-affiliated researchers and several international certifications assures that your Pure Zinc Oxide Powder continually surpasses requirements. With our specialised account management, flexible minimum order quantities and guaranteed 3-7 day delivery timeframes supported by our 3,000-square-meter inventory system, we offer the supply chain stability and technical assistance you need to gain a competitive edge in tough worldwide markets.

FAQ

Q: How is pharmaceutical-grade product different from industrial-grade product?

A: Pharmaceutical grades meet USP/EP monograph guidelines, limiting arsenic, lead, and other heavy metals to <5ppm. Industrial grades have a limited impurity profile due to particle size and surface treatment and are tailored for specific technical applications.

Q: How does particle size affect application performance?

A: For cosmetic formulations, smaller particles (0.3-0.5μm) provide greater UV-blocking and transparency, whereas larger particles (1-2μm) offer better processing qualities in rubber compounding and coating applications where optical clarity is less crucial.

Q: Can your facility produce nanozinc oxide?

A: Our normal manufacture targets submicron ranges (0.3-1.5μm). We suggest negotiating unique development timetables with our technical team for nano-zinc oxide (<100nm) needs requiring specialised handling techniques and toxicological documentation.

Q: What is the average bulk order lead time?

A: Standard standards maintain ready inventory for 3-7-day delivery of up to 5 tonnes. Due to manufacturing scheduling and quality testing procedures, custom requirements or bigger quantities may take 15-25 days.

Q: Do you give formulation matrix stability testing data?

A: Using your product in sample formulations, our laboratory may undertake rapid stability tests to support shelf-life claims and storage recommendations for regulatory filings, following ICH guidelines.

Contact Us

Ready to secure a reliable supply of premium Pure Zinc Oxide Powder backed by technical expertise and quality assurance? Contact our specialized team at duke@hongdaherb.com  to discuss your specific purity requirements, volume needs, and customization possibilities.