Molybdenum(VI) dichloride dioxide  

Synonym: Molybdenum dichloride dioxide, Dichloro(dioxo)molybdenum, Dioxomolybdenum dihydrochloride

CAS Number 13637-68-8 | MDL Number MFCD00014225 | EC Number 629-286-0

Product codeMO7688
CAS number13637-68-8
Assay (purity)99%+
Purity methodby titration:%Cl=35.61-35.63; %Mo=47.82
Metal purity99.9%-Mo
Molecular weight198.84
Formsolid (flakes)
Appearanceyellow powder
Melting point175°C
Molecular formulaCl2MoO2
Linear formulaMoO2Cl2
Packagingglassware/metal containers/bubblers

Molybdenum dichloride dioxide, among the various oxohalides of molybdenum, has received the closest attention in chemistry. Although this product is known for a long time, this compound is being exploited as a catalyst for organic transformations only in recent years. This cis-dioxo molybdenum compound has already shown the potential to catalyze a range of reactions. Thus, MoO2Cl2 is promising for possible applications as a catalyst during multi-step synthesis. As the catalyst is not yet well explored, more applications in organic synthesis is highly expected during the coming years. Synthesis of  this product are reported (see the links below).

Ereztech manufactures and sells this product in small and bulk volumes. Glass ampules, bottles or metal ampules or bubblers are available for packaging. For additional analytical information or details about purchasing Molybdenum dichloride dioxide contact us at

Safety information

Hazardous class8
Packing groupII
Signal wordDANGER
Hazard statementsH314-H318
Precautionary statementsP260-P264-P280-P301 + P330 + P331-P303 + P361 + P353-P304 + P340-P305 + P351 + P338-P310-P405-P501
In TSCA registryNo (sold for research and development usage only)

First Aid Measures

General adviceConsult a physician. Show this safety data sheet to the doctor in attendance.Move out of dangerous area.
Eye contactRinse thoroughly with plenty of water for at least 15 minutes and consult a physician.
Skin contactWash off with soap and plenty of water. Consult a physician.
InhalationIf breathed in, move person into fresh air. If not breathing, give artificial respiration. Consult a physician.
If swallowedDo NOT induce vomiting. Never give anything by mouth to an unconscious person. Rinse mouth with water. Consult a physician.

Certificates of Analysis (CoA)

If you don’t see the needed lot of Molybdenum(VI) dichloride dioxide below please contact customer support at

Lot# 243/RK/25Mo1S/1019  Lot# 2R.52S0320 Lot# 243R1Mo1S0320 Lot# 243RK35MoAG920 Lot# 243R1Mo1S221 Lot# 2/R/0.1/MoNM/521

External identifiers for Dioxomolybdenum dihydrochloride 

Pubchem CID139520
IUPAC Namedioxomolybdenum;dihydrochloride
InchI IdentifierInChI=1S/2ClH.Mo.2O/h2*1H;;;

Known applications and external links

With Molybdenum(VI) dichloride dioxide other customers often ask:

Ereztech synthesizes and sells additional Mo-compounds.

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