... 2.used as the catalyst ,the additive,an environmental protection. 3.Advantage:free sample Diboron trioxideQualified of Diboron trioxide1 ... in high temperature, can be also used an environmental protection.11. Safety notes:The product is considered toxic. It will ... concentration is 15mg/m3 (OSHA) in working place. Wear safety-protective glasses, dustproof gauze musk, rubber gloves during handling it.12 ...