... 3.Professional in textile auxiliaries and organicsilicon material [Product Name] Tetramethylcyclotetrasiloxane(D4H) [Chemical Name] 1,3,5,7-tetrahydro-1,3 ... ,5,7-tetramethylcyclotetrasiloxane [Basic Character]Appearance: colourless transparent liquidPurity: 95%; 98%Visosity: 1 ... place, avoid from the contact with acid ,alkaline and fire. tetramethylcyclotetrasiloxane