潘金莲被吸乳揉到高潮的视频,久久99久久99精品免观看,在电影院里拨开内裤挺进,护士交换粗吟配乱大交动态图

Molecular Structure:

Product description: Physical and chemical properties White hexagonal granular crystal or powder. The relative density is 2.91 (25/4°C). The melting point is 283°C. The boiling point is 732°C. Soluble in water, soluble in methanol, ethanol, glycerin, acetone, ether, insoluble in liquid ammonia. Strong deliquescence, can absorb moisture from the air and deliquescence.