File:Osmium-tetroxide-2D-dimensions.svg · Wikimedia Commons · See Wikimedia Commons
osmium tetroxide
Sign in to saveAlso known as osmic acid anhydride, osmium oxide, Perosmic oxide, Osmic acid, Osmium tetraoxide, Perosmic acid anhydride, OsO4
chemical compound
OverviewAI-generated
Osmium tetroxide is a chemical compound with the formula OsO₄. Its IUPAC name is tetraoxoosmium. The substance has a density of 5.10, a melting point of 105, and a boiling point of 266. It possesses a mass of 255.941 and a standard enthalpy of formation of -386. The vapor pressure is 7, while solubility is 6. The ionization energy is 12.6.
Safety data indicates an immediately dangerous to life or health level of 1. Exposure limits include a time-weighted average of 0.002 and a short-term limit of 0.006. The compound has four hydrogen bond acceptors and no hydrogen bond donors, with a topological polar surface area of 68.3. It is referenced by 545 other encyclopedia articles.
Synthesized by Vinony from 28 facts across 4 sources: Wikidata, PubMed, PubChem, Vinony graph. Generated from structured data (not the Wikipedia text) and checked against those facts — may still contain errors.
Chemical data
- Formula
- O4Os
- Molecular weight
- 254.2 g/mol
- IUPAC name
- tetraoxoosmium
- SMILES
- O=[Os](=O)(=O)=O
- InChIKey
- VUVGYHUDAICLFK-UHFFFAOYSA-N
- Polar surface area
- 68.3 Ų
- H-bond donors
- 0
- H-bond acceptors
- 4
- Formal charge
- 0
via PubChem
Research
2,612 papers- Osmium tetroxide: a new kind of weapon.The Israel Medical Association journal : IMAJ · 2007
- Dermal discoloration due to osmium tetroxide.Clinical toxicology (Philadelphia, Pa.) · 2023
- Osmium tetroxide as a probe of RNA structure.RNA (New York, N.Y.) · 2017
- Osmium absorption after osmium tetroxide skin and eye exposure.Basic & clinical pharmacology & toxicology · 2020
- Comparative effect of osmium tetroxide and ruthenium tetroxide on Lacazia loboi ultrastructure.Microscopy research and technique · 2021
via PubMed
Wikidata facts
Show 15 more facts
- Commons category
- Osmium tetroxide
- canonical SMILES
- O=[Os](=O)(=O)=O
- NIOSH Pocket Guide ID
- 0473
- density
- 5.10
- immediately dangerous to life or health
- 1
- melting point
- 41
- boiling point
- 135
- vapor pressure
- 7
- solubility
- 6
- ionization energy
- 12.32
- time-weighted average exposure limit
- 0.002
- short-term exposure limit
- 0.006
- chemical formula
- OsO₄
- standard enthalpy of formation
- -386
- crystal system
- monoclinic crystal system
via Wikidata · CC0
~13 min read
Encyclopedic overview
Names
Preferred IUPAC name Osmium tetraoxide
Excerpted from Wikipedia’s “osmium tetroxide” article, available under the CC BY-SA 4.0 licence.