国产黄色特级片丨扒开双腿猛进入喷水高潮叫声丨亚洲www久久久丨人牛交vide欧美xxxx丨成人99一区二区激情免费看丨无卡无码无免费毛片丨久久综合成人网丨少妇被粗大的猛烈进出免费视频丨亚洲欧美人成电影在线观看丨亚洲色偷偷偷鲁精品丨色欲天天婬色婬香综合网完整丨亚洲一区二区三区日韩丨国产出轨一区丨99久久国产综合精品麻豆丨国产真人无码作爱视频免费丨97夜夜澡人人爽人人喊a丨97欧美视频丨国产精品呻吟久久人妻无吗丨国产自精品丨久久精品一二三区白丝高潮

   Tetrabromoether is an important reactive flame retardant, and also a flame retardant crosslinking agent for synthetic polymer materials. It is mainly used in the flame retardant process of foamed polystyrene, unsaturated polyester, foamed polyurethane, ABS, etc. It can be used as an intermediate to synthesize other flame retardants.
The appearance of tetrabromoether is white powder, its melting point is controlled at 115-120 ℃, and the bromine content is 51%. The packaging form is polypropylene woven bags lined with plastic bags and sealed packaging.
Tetrabromoether application: as an intermediate, it can be further brominated to prepare octabromoether, and can also be used as a cross-linked and additive flame retardant for expandable polystyrene resin; It is a reactive flame retardant, mainly used for flame retardancy of foamed polystyrene, unsaturated polyester, foamed polyester and other materials. It can also be used in combination with hexabromocyclododecane, and has synergistic effect