Zochem Zochem Our Zinc Oxide product is a brilliant white powder manufactured by the French (Indirect) Process.
Grade 104 is our most popular medium particle size zinc oxide offering high assay and very low impurities.
Grade 104 meets GMP 21CFR110, is USFDA approved as GRAS (Generally Recognized As Safe) at 21cfr182.8991 and is authorized by the USFDA for use wherever GRAS is approved including food contact in rubber, plastics, and coatings. Grade 104 also meets the requirements of ASTM specification D79, 2002/95/EC Restriction of Hazardous Substances Directive (RoHS) for heavy metals and Waste Electrical and Electronic Directive (WEEE), and other regulations where high quality zinc oxide is required.
This product is also available in pelleted form (grade 104P), and with processing aid/surface treatment (grade 104T).
Uses
This grade is used where lower impurities are required and is used in the chemical, tire and rubber, paint and coatings, and all applications except when a special product is requested or required.
Chemical Analysis (%) | Typical Limit** | Nominal | Test Method |
|---|---|---|---|
| Zinc Oxide (ZnO) ignited basis | 99.8 min | 99.9 | Supplier (calculation) |
| Lead (Pb)* | 0.003 max | 0.002 | ASTM D4075 |
| Cadmium (Cd)* | 0.002 max | 0.0003 | ASTM D4075 |
| Iron (Fe) | 0.002 max | 0.0003 | ASTM D4075 |
| Copper (Cu) | 0.001 max | 0.0001 | ASTM D4075 |
| Loss at 110° (moisture) | 0.3 max | 0.2 | ASTM D280 |
Chemical Analysis (%) | Typical Limit** | Nominal | Test Method |
|---|---|---|---|
| Surface Area (m2/g)* | 4 - 6 | 5 | ASTM D4315 |
| Fineness retained on 325 mesh (%)* | 0.025 max | 0.005 | ASTM D185 |
| (Fineness passing through 325 mesh (%) | 99.975 min | 99.995 | ASTM D185) |
| Specifications | ASTM D79 |
* Regular test item for process & product control and included on COA. Other items are for reference only.
** Zochem can produce zinc oxide to customer specifications superseding the above table.
Standard Packaging: 50 lb. Kraft paper bags on 2,000 to 2,500 lb net wt. pallet unit, or 2,000 lb FIBC.
Use this form to easily request a quote, order a sample, ask an engineer a question, or schedule a meeting.
