Potassium hexachloroosmate(IV)
Potassium hexachloroosmate(IV) (CAS: 16871-60-6) is a high-purity chemical compound with the linear formula K₂OsCl₆ and a molecular weight of 481.14 g/mol. This solid material, assaying ≥99.99% on a trace metals basis, finds use as a precursor in materials science and metal and ceramic research. Its properties make it valuable in specialized chemical synthesis and scientific investigations.
- IUPAC
- Osmium potassium chloride
- Synonyms
- Osmium potassium chloridePotassium osmate(VI) dichloride

Precursor in Materials Science
Potassium hexachloroosmate(IV) serves as a key starting material for the synthesis of novel osmium-containing materials, including catalysts and advanced electronic components. Its defined purity ensures reproducible outcomes in material fabrication.
Research and Development
This compound is utilised in academic and industrial research settings for exploring osmium chemistry. It enables investigations into coordination compounds, organometallic complexes, and their potential applications in catalysis and other fields.
Metal and Ceramic Science
Used in the development of specialized metal and ceramic products, potassium hexachloroosmate(IV) can be incorporated into processes requiring osmium deposition or alloy formation. This contributes to the creation of materials with unique properties.
| Molecular weight | 481.14 |
|---|---|
| Linear formula | K2OsCl6 |
| Assay | ≥99.99% trace metals basis |
| Form | solid |
| Density | 3.42 g/mL at 25 °C(lit.) |
| Melting point | 600 °C (dec.)(lit.) |


Hazard statements
- H301Toxic if swallowed
- H311Toxic in contact with skin
- H314Causes severe skin burns and eye damage
- H331Toxic if inhaled
Precautionary statements
- P261Avoid breathing dust, fume, gas or vapours
- P280Wear protective gloves, clothing and eye/face protection
- P305IF IN EYES
- P310Immediately call a POISON CENTER or doctor
| Protective equipment | Eyeshields, Faceshields, Gloves, type N95 (US), type P1 (EN143) respirator filter, type P2 (EN 143) respirator cartridges |
|---|---|
| Transport (UN / ADR) | UN 3290 6.1/PG 2 |
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | T |
| Risk statements (R) | 23/24/25-34 |
| Safety statements (S) | 22-26-36/37/39-45 |
Hazard information is provided for guidance. Always consult the product Safety Data Sheet (SDS), available on request, before handling.
Documentation
Every batch ships with a Certificate of Analysis covering assay, identity and purity; the grade is confirmed against your enquiry. Safety Data Sheets and technical data sheets are available on request.
Supply & logistics
Samples for technical evaluation; bulk MOQ by grade and packaging. In-stock material ships in 7–10 working days, worldwide, with full export documentation.
What is Potassium hexachloroosmate(IV) used for?
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Potassium hexachloroosmate(IV) is used as a precursor in materials science, in research and development for exploring osmium chemistry, and in metal and ceramic science.
What is the CAS number and formula for Potassium hexachloroosmate(IV)?
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The CAS number is 16871-60-6, and the linear formula is K₂OsCl₆.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies Potassium hexachloroosmate(IV) with an assay of ≥99.99% on a trace metals basis. TSS does not represent this product as USP, BP, EP, or other pharmacopoeia grades.
How should Potassium hexachloroosmate(IV) be handled safely?
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Potassium hexachloroosmate(IV) is a Danger substance (H301-H311-H314-H331) that is toxic if swallowed, in contact with skin, and if inhaled, and causes severe skin burns and eye damage. Appropriate personal protective equipment, including eyeshields, face shields, gloves, and respiratory protection (type N95 or P1/P2 cartridges), is required.
How is Potassium hexachloroosmate(IV) packed and shipped?
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Potassium hexachloroosmate(IV) is packed according to UN 3290 6.1/PG 2 regulations for hazardous materials and is exported globally by Tech Serve Solutions.
How can I request a quote or sample for Potassium hexachloroosmate(IV)?
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To request a quote or sample for Potassium hexachloroosmate(IV), please contact the Tech Serve Solutions sales team through our website or by phone.
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