钾AR分析纯 优级 色谱级 电子级化学实验 出口 CAS: 7440-09-7优级纯

中文名钾
英文名potassium
别名钾
树枝状钾
钾离子标准溶液
钾测定用标准溶液
钾原子吸收标准溶液
英文别名potassium
potassium chunks
potassium sticks
chloro potassium
potassium,metalalloys
potassium,(li)
potassium solution 1000 ppm
potassium solution 10 000ppm
conductance standard solutionc
conductance standard solutionb
conductance standard 300 000umho
potassiumprescoredampouleunderargon
potassiumbreaksealampouleunderargon
potassium standard solution 1000ppm
conductivity calibration standard10
potassium chloride referencesolution a
potassiumsealedinglassampoulesunderargon
potassiumchunkspackedinmineraloilcagchunk
potassiumstickspackedinmineraloilcagstick
cas7440-09-7
einecs231-119-8化学式k
分子量39.1inchiinchi=1/k密度0.86 g/ml at 25 °c (lit.)熔点64 °c (lit.)沸点760 °c (lit.)水溶性reacts蒸汽压0.09 mm hg ( 260 °c)溶解度h2o: 可溶折射率n20/d 1.334ph值5.0 (h2o, 20°c)存储条件2-8°c稳定性稳定。对水分和空气敏感。通过氢气的产生和点燃而自燃。与水和酸，酒精，一氧化碳剧烈反应。储存在油下。敏感性air & moisture sensitive外观杆比重0.86颜色silver/gray气味odorless暴露限值acgih: twa 2 ppm; stel 4 ppmosha: twa 2 ppm(5 mg/m3)niosh: idlh 25ppm; twa 2 ppm(5 mg/m3); stel 4 ppm(10 mg/m3)