1,absorbed on metal surface 2,be used together with many scale inhibitors and fungi disinfectants 3,dosage of 2-4mg/l ... and Usage:This product can be absorbed on metal surface and form a thin film to protect ... in circulating cool water system. The dosage of 2-4mg/l is preferred. This product can also ... shady room and dry place.Synonyms:BTA; 1,2,3-Benzotrialole;1,2-Aminoazophenylene;1,2,3-Triazaindene