Molybdenum(V) chloride (MoCl5) CAS 10241-05-1 must be used solely for legal purposes. Please strictly verify and confirm its actual legal end-use before inquiring or ordering with us. Diversion for illicit synthesis or any illegal application is strictly forbidden. Legal liabilities will be held for any misuse or diversion. We reserve rights to conduct end-use inspection.
Molybdenum(V) Chloride 99.9% (MoCl5, CAS 10241-05-1) is a highly hygroscopic black-green crystalline solid. It is a strong Lewis-acid and chlorinating reagent, violently hydrolyzed by water to release corrosive HCl fumes. Used as catalyst and must be handled and stored under dry inert atmosphere.
Product information
Chemical Name Molybdenum(V) Chloride / Molybdenum Pentachloride
CAS Number 10241-05-1Molecular Formula MoCl₅
Molecular Weight 273.21 g/mol
Synonyms Pentachloromolybdenum
UN Number UN2508, Hazard Class 8, Packing Group III
Hazard Corrosive, moisture‑sensitive, water‑reactive
Chem-physical properties
Appearance Black-green crystalline powder / crystal
Melting Point 194 °C
Boiling Point 268 °CDensity 2.93 g/cm³
Solubility Soluble in dry ether, dry alcohol, chlorinated solvents; reacts violently with water
Hygroscopicity Highly hygroscopic, fumes in moist airStability Unstable against moisture, avoid exposure to air and water; stable under inert gas
Quality specification
| Item | Industrial Grade | High‑Purity Grade |
|---|---|---|
| Molybdenum(V) Chloride (MoCl₅) | ≥95.0 % | ≥99.5 % |
| MoCl₃ impurity | ≤3.0 % | ≤0.5 % |
| MoOCl₄ impurity | ≤1.5 % | ≤0.3 % |
| Heavy metals (as Pb) | ≤0.1 % | ≤0.05 % |
| Free Chloride | ≤0.8 % | ≤0.4 % |
Application & Use
Organic synthesis: Lewis-acid catalyst, chlorinating agent for coupling & condensation reactions
Organometallic intermediate for molybdenum-complex synthesis
Precursor for molybdenum thin-film / vapor-deposited coating materials
Brazing flux for metal joining
Raw material for manufacturing other molybdenum-based chemicals
Packing
Sealed metal can under nitrogen / argon inert atmosphere to block moisture. Standard sizes: 100g, 500g, 1kg, 25kg. Inner seal plus outer metal drum, strictly air-proof.
Transportation & Storage
- Transport: Corrosive dangerous goods UN2508, class 8. Keep away from water, moisture, rain during transit. Avoid mixing with alkaline substances.
- Storage: Store in cool, dry, well-ventilated warehouse. Keep container tightly sealed under inert dry gas. Strictly isolate from humidity, water and open air. Do not open package under ambient moist air.
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