42366 硼酸 99.99% metals basis 500g 390
42367 硼酸 ACS，≥99.5% 500g 38
42368 硼酸 99.998% metals basis 100g 960
42369 硼酸 99.998% metals basis 500g 1962
42370 硼酸 99.998% metals basis 25g 290
42371 硼酸 用于细胞培养和植物细胞培养, ≥99.5% 500g 382
42372 硼酸 分子生物学级, ≥99.5% (T) 500g 490
42373 硼酸 99.99% metals basis 100g 115
42374 硼酸 99.5%，用于电泳 500g 105
42375 硼酸 99.99% metals basis 25g 65
42376 硼酸 SP 25g 58
42377 硼酸 PT 100g 82
42378 硼酸 GR，≥99.8% 500g 36
42379 硼酸 AR，≥99.5% 500g 15
白色结晶性粉末或无色微带珍珠状光泽的磷片或六角三斜结晶。与皮肤接触有滑腻感，无无气味，味微酸苦后带甜。露置空气中无变化。加热至100-105℃时失去一分子水而形成偏硼酸，于104-160℃时长时间加热转变为焦硼酸，更高温度则形成无水物，300oC时生成硼酸酐（B2O3）。溶于水、酒精、甘油、醚类及香精油中，水溶液呈弱酸性。硼酸在水中的溶解度随温度升高而增大，并能随水蒸汽挥发；在无机酸中的溶解度要比在水的溶解度小。0.1mol/L水溶液pH为5.1。1g能溶于18ml冷水，4ml沸水，18ml冷醇，6ml沸醇或4ml甘油。在水中溶解度能随盐酸、柠檬酸和酒石酸的加入而增加。 熔点：169℃ 沸点：300℃
项目Item 分析纯 化学纯 (AR) (CP) 含量(H 3 BO 3 )Assay,% ≥ 99.5 99.0 澄清度试验Clarity 合格 合格 水不溶物Insoluble matter in water ≤ 0.005 0.02 乙醇溶解度试验Solubility in ethanol 合格 合格 甲醇不挥发物(以硫酸计)Novolatile with methanol,% ≤ 0.05 0.3 氯化物(Cl)Chloride,% ≤ 0.0005 0.002 硫酸盐(SO 4 )Sulfate,% ≤ 0.002 0.01 磷酸盐(PO 4 )Phosphate,% ≤ 0.0005 0.003 钙(Ca)Calcium,% ≤ 0.002 0.01 铁(Fe)Iron,% ≤ 0.0005 0.002 砷(As)Arsenic,% ≤ 0.0001 0.0005 铅(Pb)Lead,% ≤ 0.001 0.003 项目 优级纯 (GR) 澄清度试验Clarity 合格 钙(Ca)Calcium ≤0.002% 含量Assay ≥99.8% 甲醇不挥发物Novolatile with methanol ≤0.05% 磷酸盐Phosphate ≤0.0005% 硫酸盐Sulfate ≤0.0005% 氯化物Chloride ≤0.0003% 镁magnesium ≤0.0005% 砷(As)Arsenic ≤0.00001% 水不溶物Insoluble matter in water ≤0.005% 铁(Fe)Iron ≤0.0001% 乙醇溶解试验Solubility in ethanol 合格 重金属Heavy metals ≤0.0005% ACS级 项目名称Item ACS Grade 含量Assay ≥99.5% 不溶物Insoluble matter ≤0.005% 甲醇不挥发物Novolatile with methanol ≤0.05% 氯化物(Cl)Chloride(Cl) ≤0.001% 磷酸盐(PO 4 )Phosphate ≤0.001% 硫酸(SO 4 )Sulfate ≤0.01% 重金属(以Pb计)Heavy metals(as Pb) ≤0.001% 铁(Fe)Iron(Fe) ≤0.001% 钙(Ca)Calcium(Ca) ≤0.005% 品级Grade 分子生物学级 (for molecular biology，≥99.5% (T) ) 含量assay ≥99.5% (T) DNases, none detected RNases, none detected insoluble matter, passes filter test phosphatases, none detected proteases, none detected non-volatile substances in MeOH/HCl <0.05% 干燥损失loss on drying ≤0.5% , 20 °C (HV) pH 3.6-4.4 (25 °C, saturated solution in H2O) 水溶性solubility H2O: soluble1 M, clear, colorless (hot) 氯chloride (Cl-): ≤5 ppm 磷酸根phosphate (PO43-): ≤5 ppm 硫酸根sulfate (SO42-): ≤5 ppm Al: ≤5 ppm As: ≤0.5 ppm Ba: ≤5 ppm Bi: ≤5 ppm Ca: ≤10 ppm Cd: ≤5 ppm Co: ≤5 ppm Cr: ≤5 ppm Cu: ≤5 ppm Fe: ≤5 ppm K: ≤50 ppm Li: ≤5 ppm Mg: ≤5 ppm Mn: ≤5 ppm Mo: ≤5 ppm Na: ≤50 ppm Ni: ≤5 ppm Pb: ≤5 ppm Sr: ≤5 ppm Zn: ≤5 ppm λ 1 M in H2O UV absorption λ: 260 nm A: ≤0.015 λ: 280 nm A: ≤0.010 品级Grade 电泳级 (for electrophoresis, ≥99.5%) 外观Appearance 白色至类白色粉末 水溶解试验solubility in water Colorless Clear ，1 g plus 25 ml, H2O 甲醇不溶物Insoluble matter in MeOH ≤0.005 % 非挥发物Nonvolatile Matter with MeOH ≤0.05 % 氯Chloride ≤0.001 % 磷酸盐Phosphate (PO4) ≤0.001 % 硫酸盐Sulfate (SO4) ≤0.01 % 钙Calcium (Ca) ≤0.005 % 重金属Heavy Metals (as Lead) ≤0.001 % 铁Iron (Fe) ≤0.001 % 含量Assay(% H3BO3) ≥99.5 % 电泳实验electrophoresis test pass 品级Grade 细胞培养与植物细胞培养级 (for cell culture and plant cell culture , ≥99.5%) 外观Appearance 白色粉末 水溶解试验solubility in water Clear Colorless，40 mg/ml, H2O 纯度Purity ≥99.5 % (Titration by NaOH) 植物细胞培养测试Plant Cell Culture Test Pass 细胞培养测试Cell Culture Test Pass 99.998% metals basis： 外观Appearance 白色粉末 X-射线衍射分析X-Ray Diffraction Conforms to standard 纯度Purity ≥99.998% Based On Trace Metals Analysis ICP Assay Confirms Boron component 总金属杂质Total metallic impurities 30ppm by ICP Atomic emission 99.99% metals basis: 外观Appearance White Powder X-射线衍射X-Ray Diffraction Conforms to Structure 纯度Purity ≥99.99% Based on Trace Metals Impurities 纯度Purity (Titration by NAOH) 99.0 - 101.0 % 痕量金属杂质total metallic impurities ≤100ppm by ICP Atomic emission

配制缓冲液及各种硼酸盐，单倍体育种中配制各种培养基。