Bis(butylcyclopentadienyl)tungsten(IV) diiodide

It is used primarily as a metalorganic precursor for chemical vapour deposition (CVD) and atomic layer deposition (ALD) of tungsten-based thin films, and as a tungsten(IV) starting material in organometallic and inorganic synthesis and materials-science research.

Its CAS number is 90023-21-5 and its empirical formula is C18H26I2W (Hill notation), corresponding to a molecular weight of 680.05 g/mol. The MDL number is MFCD02093659.

Tech Serve Solutions supplies this compound as a research-grade material with a typical assay of 97%, presented as a solid with a literature melting point of 112-116 °C. It is offered for research and industrial deposition use; we do not represent it as USP, BP or EP pharmacopoeia grade.

Handle it in line with the accompanying Safety Data Sheet, using eye protection, gloves and, where airborne exposure is possible, an N95 (US) or P1 (EN143) respirator filter. As an organometallic iodide it is classed WGK 3 (severe hazard to waters) in Germany, so prevent release to drains, soil and watercourses; it is generally air- and moisture-sensitive and is best stored cool, dry and tightly closed under inert gas.

It is packed in tightly sealed, inert containers appropriate to the order quantity, with full labelling and documentation, and can be shipped internationally in accordance with applicable dangerous-goods and export regulations. Tech Serve Solutions exports globally and can advise on packaging and transport for your destination.

Contact Tech Serve Solutions with your required quantity, purity and destination, quoting CAS 90023-21-5, and our team will provide a quotation, available pack sizes and current lead time. Sample availability can be confirmed on request.