Tetra(methyl ethyl ketoxime)silane

Tetra(methyl ethyl ketoxime)silane, CAS 34206-40-1, is a silicon-based crosslinker commercially known as OX 30 or Tetrabutanoximesilane. It belongs to the oxime-functional silane family and carries EC number 251-882-0. No E-code designation applies to this substance.

In neutral-cure silicone sealant formulations, it acts as a crosslinking agent by releasing methyl ethyl ketoxime upon moisture exposure, enabling room-temperature vulcanisation without acidic or basic by-products. This mechanism makes it suitable for adhesive and elastomeric systems used in construction joints and polymer modification where substrate compatibility is critical.

OX 30 is supplied as a clear to pale yellow liquid and is available in standard industrial packaging. It falls under REACH regulation and requires an up-to-date Safety Data Sheet for procurement within the EU. Buyers should confirm current registration status and any applicable tonnage band restrictions with the supplier prior to ordering.