俺来也色色-精品国产4P一区二区-裸体自慰写真-久久国产精品77777-一本之道DVD不卡视频-92成人-亚洲免费A片-伊人狼人在线视频-三级免费播放器-理论片国产+欧美,学习成人A片,J大大奶,黑人借宿NTR中文字幕

Lithium Fluoride

Lithium fluoride, chemical formula: LiF, is an alkali metal halide that appears as white crystals at room temperature. It is insoluble in water, alcohol, and other organic solvents, but soluble in acids. At room temperature, lithium fluoride is easily soluble in nitric acid and sulfuric acid, but insoluble in hydrochloric acid. Lithium fluoride is used in the enamel industry to reduce kiln tempera