Di-(n-butoxyethoxyl)-phosphorsaeure, bis(2- butoxyethyl) phosphate, Phosphorsaeure-bis-<2-butyloxy-aethylester>, Di-(n-butoxyethyl)-phosphorsaeure, Phosphorsaeure-bis-butoxyaethylester, Phosphoric acid bis-(2-butoxy-ethyl) ester, bis(2-butoxyethyl) hydrogen phosphate