• 磷酸二氢钾 [7778-77-0]

  • 英文名:Potassium dihydrogen phosphate
  • 别名:二氢磷酸钾
  • CAS号:7778-77-0 分子式:H2KO4P 分子量:136.09
P63818-500g 磷酸二氢钾 [7778-77-0] 99.95% metals basis 500g 757.00 促销价:567.75
P63817-100g 磷酸二氢钾 [7778-77-0] 99.95% metals basis 100g 272.00 促销价:204.00
P63814-50g 磷酸二氢钾 [7778-77-0] 99.99% metals basis 50g 228.00 促销价:171.00
P63815-1g 磷酸二氢钾 [7778-77-0] 99.999% metals basis, Si 10ppm 1g 307.00 促销价:230.25
P63819-5g 磷酸二氢钾 [7778-77-0] 99.999% metals basis, Si 10ppm 最高 5g 1200.00 促销价:900.00
P63813-500g 磷酸二氢钾 [7778-77-0] AR 500g 63.00 促销价:39.69
P63815-500g 磷酸二氢钾 [7778-77-0] for HPLC,≥99.5%(T) 250g 665.00 促销价:498.75
P63819-100g 磷酸二氢钾 [7778-77-0] for HPLC,≥99.5%(T) 50g 224.00 促销价:168.00
P63816-100g 磷酸二氢钾 [7778-77-0] GCS 100g 162.00
P63814-500g 磷酸二氢钾 [7778-77-0] GR 500g 66.00 促销价:41.58
P63818-50g 磷酸二氢钾 [7778-77-0] PT 50g 147.00 促销价:110.25
P63813-25g 磷酸二氢钾 [7778-77-0] SP 25g 198.00 促销价:148.50
订货编号 商品名称 规格 包装 单价 促销价 会员价 数量
P63818-500g 磷酸二氢钾 [7778-77-0] 99.95% metals basis 500g 757.00 567.75 登录可见
P63818-500g 磷酸二氢钾 [7778-77-0] 99.95% metals basis 500g 757.00 促销价:567.75
P63817-100g 磷酸二氢钾 [7778-77-0] 99.95% metals basis 100g 272.00 204.00 登录可见
P63817-100g 磷酸二氢钾 [7778-77-0] 99.95% metals basis 100g 272.00 促销价:204.00
P63814-50g 磷酸二氢钾 [7778-77-0] 99.99% metals basis 50g 228.00 171.00 登录可见
P63814-50g 磷酸二氢钾 [7778-77-0] 99.99% metals basis 50g 228.00 促销价:171.00
P63815-1g 磷酸二氢钾 [7778-77-0] 99.999% metals basis, Si 10ppm 1g 307.00 230.25 登录可见
P63815-1g 磷酸二氢钾 [7778-77-0] 99.999% metals basis, Si 10ppm 1g 307.00 促销价:230.25
P63819-5g 磷酸二氢钾 [7778-77-0] 99.999% metals basis, Si 10ppm 最高 5g 1200.00 900.00 登录可见
P63819-5g 磷酸二氢钾 [7778-77-0] 99.999% metals basis, Si 10ppm 最高 5g 1200.00 促销价:900.00
P63813-500g 磷酸二氢钾 [7778-77-0] AR 500g 63.00 39.69 登录可见
P63813-500g 磷酸二氢钾 [7778-77-0] AR 500g 63.00 促销价:39.69
P63815-500g 磷酸二氢钾 [7778-77-0] for HPLC,≥99.5%(T) 250g 665.00 498.75 登录可见
P63815-500g 磷酸二氢钾 [7778-77-0] for HPLC,≥99.5%(T) 250g 665.00 促销价:498.75
P63819-100g 磷酸二氢钾 [7778-77-0] for HPLC,≥99.5%(T) 50g 224.00 168.00 登录可见
P63819-100g 磷酸二氢钾 [7778-77-0] for HPLC,≥99.5%(T) 50g 224.00 促销价:168.00
P63816-100g 磷酸二氢钾 [7778-77-0] GCS 100g 162.00 162.00 登录可见
P63816-100g 磷酸二氢钾 [7778-77-0] GCS 100g 162.00
P63814-500g 磷酸二氢钾 [7778-77-0] GR 500g 66.00 41.58 登录可见
P63814-500g 磷酸二氢钾 [7778-77-0] GR 500g 66.00 促销价:41.58
P63818-50g 磷酸二氢钾 [7778-77-0] PT 50g 147.00 110.25 登录可见
P63818-50g 磷酸二氢钾 [7778-77-0] PT 50g 147.00 促销价:110.25
P63813-25g 磷酸二氢钾 [7778-77-0] SP 25g 198.00 148.50 登录可见
P63813-25g 磷酸二氢钾 [7778-77-0] SP 25g 198.00 促销价:148.50
  •  订货编号
  •  商品名称
  •  规格
  •  包装
  •  单价
  •  促销价
  •  会员价
  •  数量

化学性质

无色至白色结晶或结晶性粉末,无臭。易溶于水,不溶于乙醇。水溶液呈酸性,2.7%的水溶液PH为4.2-4.7。于空气中稳定。ADI0-70mg/kg(FAO/WHO,1994)。 熔点 252.6 °C(lit.) 密度 2.338 g/mL at 25 °C(lit.) 溶解度 H2O: 1.5 M at 20 °C, clear, colorless

质量标准

  

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%


99.99% metals basis:


外观Appearance                          White or Colorless Powder/Crystals
X-射线衍射分析X-Ray Diffraction         Conforms to Structure
纯度Purity                              ≥99.99% Based on Trace Metals Impurities
磷Titration by NAOH (% P)               22.3 - 23.2 %
痕量金属分析total metallic impurities   ≤200ppm by ICP Atomic emission
(Al、Ba、Ca、Cd、Fe、Li、Mg、Mn、Mo、Na、Rb、Si、Sr、Tl、Zn)


品级Grade                               细胞和昆虫细胞培养级,≥99 %
                   (for cell culture, for insect cell culture,≥99% )
外观Appearance                          White Powder
水溶性Solubility                        Colorless Clear ,100 mg/ml, H2O
磷Phosphorus by ICP                     positive for phosphorus
钾Potassium  by ICP                     positive for potassium
纯度Purity (Titration by NaOH)          ≥99 %
细胞培养试验Cell Culture Test           Pass
昆虫细胞培养试验Insect Cell Test        Pass



品级Grade                               植物细胞培养级,≥99 %
                                   (for plant cell culture, ≥99%)
外观Appearance                          White Powder
水溶性Solubility                        Colorless Clear ,100 mg/ml, H2O
磷Phosphorus by ICP                     positive for phosphorus
钾Potassium  by ICP                     positive for potassium
纯度Purity (Titration by NaOH)          ≥99 %
细胞培养试验Cell Culture Test           Pass
昆虫细胞培养试验Insect Cell Test        Pass


品级Grade                               分子生物学级,≥99 %
                                   (for molecular biology, ≥99%)
外观appearance                           white powder
水溶性solubility                         clear colorless solution at 100mg/ml in water
纯度Purity (Titration by NaOH)           ≥99 %
磷Phosphorus by ICP                      positive for phosphorus
钾Potassium  by ICP                      positive for potassium
氯chloride                               ≤ 10 ppm  
铁iron                                   ≤ 20 ppm  
重金属heavy metals(as lead)              ≤ 10 ppm
DNA酶DNases,                             none detected
RND酶RNases,                             none detected
蛋白酶proteases,                         none detected


品级Grade                               色谱级,≥99.5% (T)  
                                       (for HPLC,≥99.5% (T))
外观appearance                           white powder  
纯度Purity (Titration by NaOH)           ≥99.5%  
pKa (25 °C)                             (1) 2.15, (2) 6.82, (3) 12.38 (phosphoric acid)  
水溶性solubility H2O:                    soluble0.1 g/mL at 25 °C, clear, colorless
λ                                  10 % in H2O
UV absorption λ: 210 nm A:               ≤0.1
  λ: 220 nm A:                           ≤0.06
  λ: 230 nm A:                           ≤0.04
  λ: 300 nm A:                           ≤0.02
  λ: 500 nm A:                           ≤0.02
test for RP gradient                     corresponds to standard
filter test                              corresponds to standard

  

危险性质

危险品标志  F,T,C,Xi
危险类别码  36/38-35-22
WGK Germany  2
RTECS号 TC6615500
海关编码  28352400
安全说明  24/25-45-36/37/39-26

  

用途及存储

  1. 用途  用作肥料、调味剂、酿造酵母培养剂,用于制备缓冲溶液,也用于医药及制造偏磷酸钾。
  2. 用途  用于水稻、小麦、棉花、油菜、烟草、甘蔗、苹果等作物施肥
  3. 用途  作为饲料补磷添加剂。
  4. 用途  食品工业中用于制造烘焙物,作膨松剂,调味剂,发酵助剂,营养强化剂,酵母食料。也用作缓冲剂,螯合剂。
  密封干燥保存。