Certificate of Analysis-COA
99% Content
Item | Specification | Value |
Appearance | White powder | White powder |
Assay ≥ | 99% | 99.2% |
Insoluble Matter | 0.05% | 0.01% |
Chloride (Cl) ≤ | 0.01% | <0.01% |
Sulfate (SO4) ≤ | 0.01% | <0.01% |
Iron (Fe) ≤ | 0.005% | 0.002% |
Calcium (Ca) ≤ | 0.1% | <0.1% |
Heavy Metals(as Pb) ≤ | 0.001% | 0.0007% |
PH of 5% Solution 25℃ | 6.0-7.0 | 6.6 |
Applications
1. Polyester, PET & Cellulose Acetate Processing — polycondensation catalyst, resin and fibre manufacture: A mild, soluble zinc catalyst that accelerates esterification and polycondensation without the colour body that antimony or heavy-metal catalysts can introduce. Its solubility in the glycol phase gives even distribution and predictable reaction rates.
2. Rubber & Elastomer Compounding — vulcanisation activator, latex compounding, tyre and technical rubber: Supplies the zinc ion that activates sulphur vulcanisation accelerators, improving cure rate, crosslink density and the consistency of the vulcanisate. Water-soluble, so it disperses readily in latex systems where zinc oxide powder is difficult to handle.
3. Textile Dyeing, Printing & Finishing — mordant dyeing, after-treatment, printing thickeners: Acts as a mordant that fixes dye to the fibre through a metal-dye complex, improving colour depth and wash fastness. Also used as a zinc source in finishing baths and in the preparation of printing pastes.
4. Zinc Chemistry & Pigment Manufacturing — zinc oxide, zinc stearate, zinc borate and zinc soap production; ceramic glazes and frits: A clean, high-purity, water-soluble zinc source for making other zinc compounds by precipitation or metathesis, with a controlled impurity profile. In ceramics it acts as a flux and colour modifier in glazes and frits.
5. Wood Protection & Materials Preservation — timber treatment, preservative formulations, anti-sapstain systems: Provides zinc as the active metal in water-borne wood preservative systems, inhibiting fungal growth and staining organisms. Soluble and compatible with the copper and boron systems used in modern timber treatment.
Quality Assurance
Every batch of chemicals leaves our factory with complete laboratory documentation — not a promise, but verifiable test data. From incoming raw material inspection to finished-goods release, each batch is tested against published specifications, and a Certificate of Analysis (COA) accompanies every single shipment. What you order is exactly what we test — and what we ship.
Tested by our in-house ISO 9001:2015 laboratory. Verified independently by third-party labs on request (SGS / BV / Intertek). Traceable from raw material to your warehouse.
Packaging
Liquid plastic drums
Liquid tonnes
Liquid iron drums
Export-grade packaging, custom labels
Solids (woven bags/cardboard drums/ton bags)
Liquids (plastic drums/IBC/ISO tanks)