16045-88-8 三氟化硼

硼烷三氟化物（Boron trifluoride）运输编号UN 1008（压缩气体），属2.3类有毒气体，8类腐蚀性物质。吸入致命，皮肤接触灼伤，遇水生成氢氟酸等有毒气体。暴露限值：PEL/C 1 ppm（3 mg/m³），TLV-C 0.7 ppm，IDLH 25 ppm。需正压呼吸器、防化服，储存远离水、活性金属。

Used as a catalyst in organic synthesis (Friedel-Crafts alkylation, ether cleavage, esterification, nitration/sulfonation of aromatics, olefin polymerization, alkene/alkane isomerization, petroleum cracking/desulfurization); Amine complexes used as epoxy curing agents; Protect molten magnesium/alloy from oxidation; Fumigant; Neutron measurement; Soldering flux; Electronics (electrochemical high-temperature cells, metal etching for microchips); Gas brazing; Diborane production; 10% BF3 in methanol, 99% pure gas, 99.5% hydrate, 95% dihydrate grades available.

Semiconductor and photovoltaic agent; Catalyst; Fuels and fuel additives; Brazing; Petroleum Production and Refining; Soldering; Semiconductor Manufacturing; Metal Extraction and Refining; Organic synthesis

路线1：商业生产

• 步骤: 向无水硼砂（四硼酸钠）分步加入氢氟酸和硫酸；或从硼砂与氢氟酸、或硼酸与氟化铵反应形成络合物，再用冷发烟硫酸处理。
• 专利参考: Swinehart, US 2148514, US 2196907 (1939, 1940 Harshaw Chemical); Wiesboeck, US 3690821 (1972 U.S. Steel)
• 核心工艺: 硼酸与氢氟酸/氟化铵反应生成络合物，经冷发烟硫酸处理。 路线2：实验室制备
• 方法: 重氮氟硼酸盐分解；三氯化硼与三氟化锑氟化。
• 杂质控制: 成品中催化剂分解产物硼含量≤0.04%，氟含量≤0.3%。