Osmic acid, 99.9%
Osmic acid, 99.9% (CAS 20816-12-0) supplier Zemixal. Request a quote with price, lead time and documents. Packs from 1 g.
About Osmic acid, 99.9%
Researchers and plant chemists source Osmic acid, 99.9% from Zemixal for routine and specialised work. Key data (99.9%): CAS 20816-12-0, formula O4Os and molar mass 254.2 g/mol. It is described as yellow to pale yellow solid or crystals.
Use cases we see most often
- Biological staining
- Oxidation reactions
Storage and safety notes
Physical constants on file: melting point 40-44 °C. Classified under GHS with signal word Danger and hazard statements H300, H310, H314 and H330. Read the SDS before first use. For transport it ships as UN UN 2471.
Available as 1 g, 10 x 1 g and 100 x 1 g. Larger or split packs can be arranged. Every shipment includes a batch certificate of analysis and a 16-section SDS. Add it to your quote list and our team replies with price, lead time and shipping options within one business day.
Specifications and identifiers
| Product name | Osmic acid, 99.9% |
|---|---|
| Catalogue number | ZX-014456 |
| CAS number | 20816-12-0 |
| IUPAC name | tetraoxoosmium |
| Molecular formula | O4Os |
| Molar mass | 254.2 g/mol |
| Exact mass | 255.9411 |
| Purity / assay | 99.9% |
| Physical form | Crystalline |
| Appearance | Yellow to pale yellow solid or crystals |
| Melting point | 40-44 °C |
| H-bond donors / acceptors | 0 / 4 |
| Topological polar surface area | 68.3 Ų |
| HS code | 28439019 |
| UN number | UN 2471 |
| InChIKey | VUVGYHUDAICLFK-UHFFFAOYSA-N |
| SMILES | O=[Os](=O)(=O)=O |
| PubChem CID | 30318 |
| Synonyms | Osmium tetroxide, Osmium(VIII)-oxide, Osmium tetraoxide, Perosmic oxide, Osmium(VIII) oxide, Osmic acid anhydride, Perosmic acid anhydride, Osmium oxide (OsO4), (T-4)-, Acid, Osmic, Tetroxide, Osmium, OsO4, Osmium oxide, (T-4)- |
Lot values are stated on the batch certificate of analysis. Ask for a typical COA with your quotation.
Safety and GHS hazards
Signal word Danger
- H300Fatal if swallowed
- H310Fatal in contact with skin
- H314Causes severe skin burns and eye damage
- H330Fatal if inhaled
Precautionary statements P260, P262, P264, P270, P271, P280, P284, P301 + P316, P301 + P330 + P331, P302 + P352, P302 + P361 + P354, P304 + P340, P305 + P354 + P338, P316, P320, P321, P330, P361 + P364, P363, P403 + P233, P405, P501
Classification summarised from public GHS notifications. It can vary with grade and concentration, so always follow the SDS supplied with your lot.
Pack sizes
| 1 g | Quoted on request | |
| 10 x 1 g | Quoted on request | |
| 100 x 1 g | Quoted on request |
Need a different size? Bulk drums and custom packing are quoted on request through the quote form on this page.
Questions about Osmic acid, 99.9%
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