硝酸钾 Potassium nitrate |
CAS号:7757-79-1 分子式:KNO3 分子量:101.10 EINECS:231-818-8 别 名:硝石,火硝 别名英文名:Nitric acid,potassium salt
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性状 无色透明斜方晶系结晶或白色粉末,约400℃时分解放出氧,并转变成亚硝酸钾,继续加热则生成氧化钾。易溶于水、液氨和甘油。不溶于无水乙醇和乙醚。在空气中不易潮解,为强氧化剂,与有机物接触能燃烧爆炸,并放出有刺激性气味的有毒气体。与碳粉或硫黄共热时,能发出强光和燃烧。 密度:2.109 熔点:334℃ 备注: 以上描述,仅作参考,并不表示您收到的产品,与此项描述完全相符,产品的出厂标准,请参见质量标准。 质量标准 GB/T647-93 项 目ltem 优级纯 分析纯 化学纯 (GR) (AR) (CP) 含量(KNO3)Assay,% ≥99.0 ≥99.0 ≥98.5 pH(50g/L溶液,25℃),pH of water solution 5.0-8.0 5.0-8.0 5.0-8.0 澄清度试验Clarity 合格 合格 合格 水不溶物lnsoluble matter in water,% ≤0.002 ≤0.004 ≤0.006 碘酸盐(IO3)lodate,% ≤0.0005 ≤0.0005 ≤0.002 总氯量(Cl)Total chlorine,% ≤0.0015 ≤0.003 ≤0.005 硫酸盐(SO4),Sulfale,% ≤0.002 ≤0.003 ≤0.01 亚硝酸盐(NO2)Nitrile ≤0.001 ≤0.001 ≤0.002 磷酸盐(PO4)Phosphate,% ≤0.0005 ≤0.0005 ≤0.001 钠(Na)Sodium,% ≤0.02 ≤0.02 ≤0.05 镁(Mg)Magnesium,% ≤0.001 ≤0.002 ≤0.05 钙(Ca)Calcium,% ≤0.001 ≤0.004 ≤0.006 铁(Fe)lron,% ≤0.0001 ≤0.0002 ≤0.0005 重金属(以Pb计)Heavy metals,% ≤0.0003 ≤0.0005 ≤0.001 铵(NH4)Ammonium,% ≤0.001 ≤0.001 ≤0.005 ACS级 项目名称 ACS Grade 含量(KNO3)Assay ≥99.0% pH(5%溶液,25.0℃) pH of a 5% solution at 25.0℃ 4.5-8.5 水不溶物Insoluble matter ≤0.005% 氯化物(Cl)Chloride ≤0.002% 碘酸盐(IO3)Iodidi ≤5ppm 硝酸盐(NO3)Nitrate ≤0.001% 磷酸盐(PO4)Phosphate ≤5ppm 硫酸盐(SO4)Sulfate ≤0.003% 重金属(以Pb计)Heavy metals ≤5ppm 铁(Fe)Iron ≤3ppm 钙(Ca)Calcium ≤0.005% 镁(Mg)Magnesium ≤0.002% 钠(Na)Sodium ≤0.005% 品级Grade 用于植物细胞培养 (for plant cell culture, ≥99.0%) 外观Appearance 白色粉末 红外光谱鉴别Infrared spectrometry Conforms to Structure 纯度Purity ≥99.0% (T) 水溶解试验solubility in water 20g/150ml in H2O,Clear ,Colorless 干燥损失Loss on Drying ≤1.00 % 植物细胞培养Plant Cell Culture Test Pass 品级Grade 用于细胞培养 (for cell culture, ≥99.0%) 外观Appearance 白色粉末 红外光谱鉴别Infrared spectrometry Conforms to Structure 纯度Purity ≥99.0% (T) 水溶解试验solubility in water 20g/150ml in H2O,Clear ,Colorless 干燥损失Loss on Drying ≤1.00 % 细胞培养Cell Culture Test Pass 99.99% metals basis: 外观Appearance 白色粉末或结晶 纯度Purity ≥99.99% Based On Trace Metals Analysis ICP: Confirms Potassium Component Confirmed 痕量金属分析Trace Metal Analysis ≤200ppm by ICP Atomic emission 99.997% metals basis: 外观Appearance 白色粉末或结晶 纯度Purity ≥99.997% Based On Trace Metals Analysis ICP: Confirms Potassium Component Confirmed 痕量金属分析Trace Metal Analysis ≤50ppm by ICP Atomic emission 贮存 密封阴凉干燥保存。 用途 强氧化剂。助熔剂。用于发射光谱分析。钾盐合成。照相用。点滴分析锰和钠,配制单倍体育种培养基及农用微生物“5406”培养基。 联合国编号 1486 Risk: R8- Safety : S17- Hazard : O - |