CAS# 556-67-2 Molecular formula: [(CH3)2SiO]4 Molecular weight: 296.6 Description of danger: UN No. 1993, Package category No. III Product standard: Enterprise Standard Q/ZTA1-2007 Octamethylcyclotetrasiloxane Appearance: Colorless transparent oily liquid Dissolubility: insoluble in water, soluble in organic solvents such as benzene etc. Banned articles: Oxidant Package, Storage and transportation: It should be packed in 200L iron bucket and be storeed in a Shady, cool and ventilated storehouse.