硼酸规格:99.0%产地:土耳其/俄罗斯包装:25kg/袋价格:6500元/吨硼酸BoricacidCas号:10043-35-3分子式H3BO3分子量61.83别名性状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、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℃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。质量标准项目Item分析纯化学纯(AR)(CP)含量(H3BO3)Assay,%≥99.599.0澄清度试验Clarity合格合格水不溶物Insolublematterinwater≤0.0050.02乙醇溶解度试验Solubilityinethanol合格合格***不挥发物(以***计)Novolatilewithmethanol,%≤0.050.3氯化物(Cl)Chloride,%≤0.00050.002***盐(SO4)Sulfate,%≤0.0020.01磷酸盐(PO4)Phosphate,%≤0.00050.003钙(Ca)Calcium,%≤0.0020.01铁(Fe)Iron,%≤0.00050.002***(As)Arsenic,%≤0.00010.0005铅(Pb)Lead,%≤0.0010.003项目优级纯(GR)澄清度试验Clarity合格钙(Ca)Calcium≤0.002%含量Assay≥99.8%***不挥发物Novolatilewithmethanol≤0.05%磷酸盐Phosphate≤0.0005%***盐Sulfate≤0.0005%氯化物Chloride≤0.0003%镁magnesium≤0.0005%***(As)Arsenic≤0.00001%水不溶物Insolublematterinwater≤0.005%铁(Fe)Iron≤0.0001%乙醇溶解试验Solubilityinethanol合格***He***ymetals≤0.0005%ACS级项目名称ItemACSGrade含量Assay≥99.5%不溶物Insolublematter≤0.005%***不挥发物Novolatilewithmethanol≤0.05%氯化物(Cl)Chloride(Cl)≤0.001%磷酸盐(PO4)Phosphate≤0.001%***(SO4)Sulfate≤0.01%***(以Pb计)He***ymetals(asPb)≤0.001%铁(Fe)Iron(Fe)≤0.001%钙(Ca)Calcium(Ca)≤0.005%品级Grade分子生物学级(formolecularbiology，≥99.5%(T))含量assay≥99.5%(T)DNases,nonedetectedRNases,nonedetectedinsolublematter,passesfiltertestphosphatases,nonedetectedproteases,nonedetectednon-volatilesubstancesinMeOH/HCl<0.05%干燥损失lossondrying≤0.5%,20°C(HV)pH3.6-4.4(25°C,saturatedsolutioninH2O)水溶性solubilityH2O:soluble1M,clear,colorless(hot)氯chloride(Cl-):≤5ppm磷酸根phosphate(PO43-):≤5ppm***根sulfate(SO42-):≤5ppmAl:≤5ppmAs:≤0.5ppmBa:≤5ppmBi:≤5ppmCa:≤10ppmCd:≤5ppmCo:≤5ppmCr:≤5ppmCu:≤5ppmFe:≤5ppmK:≤50ppmLi:≤5ppmMg:≤5ppmMn:≤5ppmMo:≤5ppmNa:≤50ppmNi:≤5ppmPb:≤5ppmSr:≤5ppmZn:≤5ppmλ1MinH2OUVabsorptionλ:260nmA:≤0.015λ:280nmA:≤0.010品级Grade电泳级(forelectrophoresis,≥99.5%)外观Appearance白色至类白色粉末水溶解试验solubilityinwaterColorlessClear，1gplus25ml,H2O***不溶物InsolublematterinMeOH≤0.005%非挥发物NonvolatileMatterwithMeOH≤0.05%氯Chloride≤0.001%磷酸盐Phosphate(PO4)≤0.001%***盐Sulfate(SO4)≤0.01%钙Calcium(Ca)≤0.005%***He***yMetals(asLead)≤0.001%铁Iron(Fe)≤0.001%含量Assay(%H3BO3)≥99.5%电泳实验electrophoresistestpass品级Grade细胞培养与植物细胞培养级(forcellcultureandplantcellculture,≥99.5%)外观Appearance白色粉末水溶解试验solubilityinwaterClearColorless，40mg/ml,H2O纯度Purity≥99.5%(TitrationbyNaOH)植物细胞培养测试PlantCellCultureTestPass细胞培养测试CellCultureTestPass99.998%metalsbasis：外观Appearance白色粉末X-射线衍射分析X-RayDiffractionConformstostandard纯度Purity≥99.998%BasedOnTraceMetalsAnalysisICPAssayConfirmsBoroncomponent总金属杂质Totalmetallicimpurities30ppmbyICPAtomicemission99.99%metalsbasis:外观AppearanceWhitePowderX-射线衍射X-RayDiffractionConformstoStructure纯度Purity≥99.99%BasedonTraceMetalsImpurities纯度Purity(TitrationbyNAOH)99.0-101.0%痕量金属杂质totalmetallicimpurities≤100ppmbyICPAtomicemission贮存密封干燥保存。用途配制缓冲液及各种硼酸盐，单倍体育种中配制各种培养基。联合国编号Risk：R60-Safety:S45-S53-Hazard:T-)