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Potassium phosphate monobasic

Cas:
7778-77-0
Molecular Structure:
MDL:
--MFCD00011401
Molecular Formula:
KH2PO4
Molecular Weight:
136.09
Alias:
磷酸一钾 Monopotassium phosphate Potassium dihydrogen phosphate prim.-Potassium phosphate
Product order:
Name Specifications Packing Price Delivery
Potassium phosphate monobasic 250g RMB 495 现货
Potassium phosphate monobasic ACS 500g RMB 85.8 现货
Potassium phosphate monobasic CP 500g RMB 61.6 现货
Potassium phosphate monobasic AR 500g RMB 50.6 促销
Character:
无色结晶或白色颗粒状粉未。pH4.4~4.7。在空气中稳定不变。有吸湿性,易溶于水,不溶于醇,水溶液呈微碱性,于204时分子内容脱水,1%水溶液PH值为8.9。水中溶解度:222 g/L (20°C)
熔点:  253 °C  
相对密度:2.338
Quality Standard:
   
   GB/T1274-93
项目ltem                               分析纯     化学纯
                                        (AR)       (CP)
含量(KH2PO4),%                        ≥99.5       99.0
pH(50g/L,25℃)pH of water solution      4.2~4.5   4.2~4.5
澄清度试验Clarity                       合格    合格
水不溶物lnsoluble matter in water,%   ≤0.002      0.005
干燥失重Drying loss,%                 ≤0.2        0.3
氯化物(Cl)Chloride,%                  ≤0.001      0.005
硫酸盐(SO4)Sulfale,%                  ≤0.003      0.005
总氮量(N)Total nitrogen,%             ≤0.001      0.002
砷(As)Arsenic,%                       ≤0.0005     0.002
钠(Na)Sodium,%                        ≤0.02       0.05
铁(Fe)Iron,%                          ≤0.001      0.005
重金属(以Pb计)Heavy metals,%          ≤0.001      0.005

ACS级
项目名称                             ACS Grade
含量(KH2PO4)Assay                    ≥99.0%
pH(5%溶液,25.0℃)
pH of a 5% solution at 25.0℃         4.4-4.5
水不溶物Insoluble matter             ≤0.01%
干燥失重Loss on drying               ≤0.2%
氯化物(Cl)Chloride                   ≤0.001%
硫酸盐(SO4)Sulfate                   ≤0.003%
重金属(以Pb计)Heavy metals(as Pb)    ≤0.001%
铁(Fe)Iron                           ≤0.002%
钠(Na)Sodium                         ≤0.005%

Storage:
密封保存。
用途  配制缓冲液,测定砷、锑、磷、铝和铁,配制磷标准液,配制单倍体育种用各种培养基,测定血清中无机磷、碱性酸酶活力,制备细菌血清检验钩端螺旋体的培养基等。
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