Osmium - ≥99.9% metals basis , CAS No.7440-04-2

CAS: 7440-04-2 Cat. No.: O111788 Molecular Weight: 190.23 EC Number: 231-114-0 PubChem CID: 23937

GRADE & PURITY ≥99.9% metals basis

Synonyms

Osmium Standard: Os @ 1000 microg/mL in 20% HCl | hydrido osmium | CHEBI:49812 | UNII-2E7M255OPY | Q27104722 | SYQBFIAQOQZEGI-UHFFFAOYSA-N | OSMIUM METALLICUM | HSDB 7329 | Metallic osmium | Osmium - Os @ 1000 microg/mL in 20% HCl | osmium(3+) | Osmium po

Storage

Room temperature

Shipped In

Normal

Specifications

Synonyms

Osmium Standard: Os @ 1000 microg/mL in 20% HCl | hydrido osmium | CHEBI:49812 | UNII-2E7M255OPY | Q27104722 | SYQBFIAQOQZEGI-UHFFFAOYSA-N | OSMIUM METALLICUM | HSDB 7329 | Metallic osmium | Osmium - Os @ 1000 microg/mL in 20% HCl | osmium(3+) | Osmium po

Specifications & Purity

≥99.9% metals basis

Storage

Room temperature

Shipped In

Normal

Purity

≥99.9% metals basis

Names and Identifiers

• Canonical Smiles: [Os]
• IUPAC Name: osmium
• InChIKey: SYQBFIAQOQZEGI-UHFFFAOYSA-N
• INCHI: 1S/Os
• Isomeric SMILES: [Os]
• WGK Germany: nwg
• RTECS: RN1100000
• PubChem CID: 23937
• UN Number: 3089
• Molecular Weight: 190.23

Taxonomic Classification

Taxonomy Tree

• Kingdom Inorganic compounds
  • Superclass Homogeneous metal compounds
    • Class Homogeneous transition metal compounds

• Kingdom: Inorganic compounds
• Superclass: Homogeneous metal compounds
• Class: Homogeneous transition metal compounds
• Subclass: Not available
• Intermediate Tree Nodes: Not available
• Direct Parent: Homogeneous transition metal compounds
• Alternative Parents: Not available
• Molecular Framework: Not available
• Substituents: Homogeneous transition metal
• Description: This compound belongs to the class of inorganic compounds known as homogeneous transition metal compounds. These are inorganic compounds containing only metal atoms,with the largest atom being a transition metal atom.
• External Descriptors: iron group element atom - platinum group metal atom

Data sources

1. Djoumbou Feunang Y, Eisner R, Knox C, Chepelev L, Hastings J, Owen G, Fahy E, Steinbeck C, Subramanian S, Bolton E, Greiner R, and Wishart DS. ClassyFire: Automated Chemical Classification With A Comprehensive, Computable Taxonomy. Journal of Cheminformatics, 2016, 8:61.

DOI: 10.1186/s13321-016-0174-y

Chemical and Physical Properties

• Boil Point(°C): 5300°C
• Melt Point(°C): 2700°C
• Molecular Weight: 190.200 g/mol
• Hydrogen Bond Donor Count: 0
• Hydrogen Bond Acceptor Count: 0
• Rotatable Bond Count: 0
• Exact Mass: 191.961 Da
• Monoisotopic Mass: 191.961 Da
• Topological Polar Surface Area: 0.000 Ų
• Heavy Atom Count: 1
• Formal Charge: 0
• Complexity: 0.000
• Isotope Atom Count: 0
• Defined Atom Stereocenter Count: 0
• Undefined Atom Stereocenter Count: 0
• Defined Bond Stereocenter Count: 0
• Undefined Bond Stereocenter Count: 0
• The total count of all stereochemical bonds: 0
• Covalently-Bonded Unit Count: 1

XLogP3

References

1. Xiao Chaoqiang, Zhu Li, Zhang Xia, Gao Rumeng, He Shuwang, Lv Zhihua, Hu Changqin.  (2021)  Elemental Impurities in Pediatric Calcium Carbonate Preparations-High Throughput Quantification and Risk Assessment.  Frontiers in Chemistry,      [PMID:34095087] [10.3389/fchem.2021.682798]

2. Fang Lixia, Hao Xueyan, Fan Jie, Liu Xiaolei, Chen Yaru, Wang Lian, Huang Xiaoying, Song Hao, Cao Yingxiu.  (2025)  Genome-scale CRISPRi screen identifies pcnB repression conferring improved physiology for overproduction of free fatty acids in Escherichia coli.  Nature Communications,  16  (1): (1-16).  [PMID:40157940] [10.1038/s41467-025-58368-3]

3. Kangwang Wang, Longfu Li, Peifeng Yu, Nannan Tang, Lingyong Zeng, Kuan Li, Chao Zhang, Rui Chen, Zaichen Xiang, Huichao Wang, Yongqing Cai, Kai Yan, Huixia Luo.  (2024)  Revealing the nontrivial topological surface states of catalysts for effective photochemical carbon dioxide conversion.  APPLIED CATALYSIS B-ENVIRONMENTAL,      [PMID:] [10.1016/j.apcatb.2024.124428]