... BTA, columnar BTA, tablet BTA and liquid BTA. 1,2,3 benzotrazole(BTA)Properties:It is solved slightly in ... , such as copper and silver, etc, but also a superior ultraviolet absorber. Its product can be wildly used ... and trimming from the crystal of BTA. The size can be sadjusted according to the requirement of the ... customers. Since it has a bulk density of 600-700kg/m3, there is ...