1.When aqueous hydrofluoric acid concentration is below fifty percent, it has delayed (up to six hours) symptoms of exposure.
当水成氢氟酸的浓度低于50%时，它有延迟（大到6个小时）的暴露症状。
2.Hydrofluoric acid (HF) is an extremely powerful inorganic acid and a vigorous dehydrating agent.
氢氟酸是一种极强的无机酸和强脱水剂。
3.Insoluble in except outside of any acid, hydrofluoric acid soluble in treatments.
不溶于除氢氟酸以外的任何强酸，能溶于苛性碱。
4.Exceptions are hydrofluoric, phosphoric, hydrochloric and sulfuric acids as well as concentrated alkalies .
但氢氟酸、磷酸、盐酸及硫酸以及浓碱除外。
5.CHEMICAL ANALYSIS OF REFRACTORIES. SILICA MATERIALS. DETERMINATION OF SILICON. (RAPID METHOD BY HYDROFLUORIC VOLATILISATION).
耐火材料的化学分析.硅材料.硅的测定.（氢氟快速挥发法）
6.Hydrofluoric Acid is one of the strongest and most corrosive acids.
氢氟酸是酸性最强、腐蚀性最大的酸之一。
7.Apply to corrosive chemicals, concentrated nitric acid, hydrochloric acid, sulfuric acid, hydrofluoric acid, alkali, etc. . .
适用于腐蚀性化学药品、浓硝酸、盐酸、硫酸、氢氟酸、强碱等。
8.It has high anti-corrosion for inorganic acid, organic acid and organic solvent except the hydrofluoric acid.
它具有较高的抗腐蚀性能，为无机酸，有机酸及有机溶剂除氢氟酸。
9.Hydrofluoric acid exposure requires immediate specific and specialized medical treatment.
氢氟酸暴露要求立刻的特殊的专门医疗处理。
10.Material illustrating detailed structure of graptolites has been etched from limestone by means of hydrofluoric acid.
表明笔石详细构造的物质是利用氢氟酸从石灰岩中侵蚀出来。