8 components: 1000mg/l each of n-Butyltin-trichloride [CAS:1118-46-3] ; n-Octyltin-trichloride [CAS:3091-25-6] ; Dibutyltin-dichloride [CAS:683-18-1] ; Di-n-octyltin-dichloride [CAS:3542-36-7] ; Tetrabutyltin [CAS:1461-25-2] ; Fentin-chloride [CAS:639-58-7] ; Tricyclohexyltin-chloride [CAS:3091-32-5] ; TBTC [CAS:1461-22-9] in Methanol