Zinc oxide: inorganic mineral (sunscreen UV filter).
Zinc oxide testing at Vanguard Laboratory: identity, purity and quantity $250 per sample, with results in 3 to 5 business days.
Zinc oxide: 2D structure drawn from the PubChem record (CID 3007857).
1314-13-2
ZnO
81.38 g/mol
Inorganic mineral (sunscreen UV filter)
Identity: Zinc oxide
IUPAC name: zinc oxygen(2-)
Method for the $250 identity, purity and quantity test: ICP-MS metal content, against a reference standard, with results in 3 to 5 business days.
The USP monograph covers identity by a heating color change and ion chromatography, assay by ion chromatography, limits for arsenic, lead, mercury, iron and other heavy metals, loss on ignition, alkalinity and carbonate. Full testing to the USP Zinc Oxide monograph is available and quoted.
Chromatographic purity and mg per unit by the method matched to the compound, identity against a reference standard. 1 unit.
| Add-on test | Price |
|---|---|
| Identity and impurities | |
| FTIR identity | $90 |
| CHNS elemental analysis (carbon, hydrogen, nitrogen, sulfur) | $125 |
| Chiral purity (where a chiral method exists; new methods quoted) | $250 |
| Water, solvents and salt form | |
| Water content by Karl Fischer | $60 |
| Residual solvents | $150 |
| Counterions: chloride, acetate and TFA | $70 |
| Assay | |
| Assay, % w/w (with raw powder purity; $250 together) | +$50 |
| Metals and conformity | |
| Heavy metals: arsenic, cadmium, chromium, mercury and lead | $150 |
| Conformity: purity and quantity on more units from the same lot | $100 per extra unit |
| Microbiology (injectables) | |
| Endotoxin | $210 |
| Sterility or bioburden | $150 |
| Container closure integrity (CCI) | $50 |
| Screening | |
| Fentanyl screen | $50 |
10% off for 10 or more samples.
Need something else? Other tests are available on request.
Purity and quantity is $250 per sample (1 unit) and raw powder purity is $200 for 50 mg, with results in 3 to 5 business days. Send the material sealed and labeled, with the label claim and the form it contains.
No. The $250 test covers identity, purity and quantity by ICP-MS for zinc content. Full testing to the USP Zinc Oxide monograph is available and quoted.
Zinc oxide is an inorganic mineral with no organic structure to separate by HPLC. ICP-MS measures the zinc directly and can also screen for heavy metals such as lead and arsenic.
They are separate USP articles for different grades of the same compound. They share the ZnO formula but differ in some purity tests, so tell us which grade a sample is meant to meet.
Yes. The product is digested and the zinc measured by ICP-MS, then reported as zinc oxide.
https://pubchem.ncbi.nlm.nih.gov/compound/3007857
Identity facts from the USP monograph header for this compound.
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