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PotassiumPotassium chunksPotassium sticksCHLORO POTASSIUMpotassium,metalalloyspotassium,(liquidalloy)Potassium solution 1000 ppmPotassium solution 10 000 ppmCONDUCTANCE STANDARD SOLUTION CCONDUCTANCE STANDARD SOLUTION BCONDUCTANCE STANDARD 300 000 UMHOPotassiumprescoredampouleunderargonPotassiumbreaksealampouleunderargonPotassium standard solution 1000 ppmCONDUCTIVITY CALIBRATION STANDARD 10POTASSIUM CHLORIDE REFERENCE SOLUTION APotassiumsealedinglassampoulesunderargonPotassiumchunkspackedinmineraloilcagchunkPotassiumstickspackedinmineraloilcagstickCAS7440-09-7EINECS231-119-8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 25 ppm; TWA 2 ppm(5 mg/m3); STEL 4 ppm(10 mg/m3)