项目Item                                                                 分析纯        化学纯
                                                                                    (AR)         (CP)
含量［NH₄H₂PO₄］Assay,%                              ≥99.0        98.5
水溶液反应Solution reaction                                    合格         合格
澄清度试验Clarity                                                    合格         合格
水不溶物Insoluble matter in water,%                  ≤0.005       0.01
氯化物(Cl)Chloride,%                                              ≤0.0005      0.001
硫化合物(以SO₄计)Sulfur compounds                ≤0.005       0.01
硝酸盐(NO₃)Nitrate,%                                         ≤0.001       0.002
铁(Fe)Iron,%                                                        ≤0.001       0.003
砷(As),Arsenic,%　                                              ≤0.0005      0.002
重金属(以Pb计)Heavy metals,%                         ≤0.0005      0.001
碱金属(以磷酸盐计)Alkali metals,%                    ≤0.2         0.3

ACS级
项目名称Item                                        ACS Grade
含量NH4H2PO4Assay                                    ≥98.0%
pH(5%溶液,25.0℃)pH                                  3.8-4.4
水不溶物Insoluble matter                             ≤0.005%
氯化物(Cl)Chloride(Cl)                               ≤5ppm
硝酸盐(NO₃)Nitrate                                   ≤0.001%
硫酸盐(SO₄)Sulfate                                   ≤0.01%
重金属(以Pb计)Heavy metals(as Pb)                    ≤5ppm
铁(Fe)Iron(Fe)                                       ≤0.001%
钙(Ca)Calcium(Ca)                                    ≤0.001%
镁(Mg)Magnesium(Mg)                                  ≤5ppm
钾(K)Potassium(K)                                    ≤0.005%
钠(Na)Sodium(Na)                                     ≤0.005%


品级Grade                               植物细胞培养级，≥99.0% (T)  
                                     (for plant cell culture，≥99.0% (T))
外观Appearance                          白色粉末
纯度Purity                              ≥99.0% (T)  
水溶解试验solubility in water           clear colorless ， 20g plus 200ml of water
植物细胞培养测试plant cell culture test pass


≥99.99% metals basis：


外观Appearance                          白色结晶
纯度Purity                              ≥99.99% Based on Trace Metals Impurities of ICP
滴定纯度Purity                          ≥99.0 % (Titration by NaOH)
ICP:                                     Confirms Phosphorus Component Confirmed
痕量金属分析Trace Metal Analysis        ≤100ppm by ICP Atomic emission
(Fe、Mg、Na)  
不溶物Insoluble matter: (10%, H2O)      ≤0.005 %
氯Chloride (Cl)                         ≤5 ppm
铁Iron (Fe)                             ≤0.001 %
重金属Heavy Metal (as Pb)               ≤5 ppm
钾Potassium (K)                         ≤0.005 %
钠Sodium (Na)                           ≤0.005 %
硝酸根Nitrate (NO3)                     ≤0.001 %
pH @ 25 Deg C (5% Solution)             3.8 - 4.4
硫酸根Sulfate (SO4)                     ≤0.01 %
钙Calcium (Ca)                          ≤0.001 %
镁Magnesium (Mg)                        ≤0.0005 %



分析标准品：

含量assay                             ≥99.5% (T)
总杂质total impurities                12.18%±0.10% total Kjeldahl nitrogen
干燥损失loss on drying                ≤0.2%
pH                                    3.8-4.4 (25 °C, 50 mg/mL in H2O)
水溶性solubility H2O:                 soluble, clear, colorless



品级Grade                               色谱纯  
                                   (grade for HPLC)
外观Appearance                          白色粉末或结晶
纯度Purity                              ≥99.0% (T)
pH                                      4.0-5.0 (20 °C, 10% in H2O)
水溶性solubility H2O:                   soluble0.1 g/mL at 25 °C, clear, colorless
λ 10 % in H2O
紫外吸光值UV absorption
  λ: 210 nm A:                         ≤0.05
  λ: 220 nm A:                         ≤0.04
  λ: 230 nm A:                         ≤0.03
  λ: 240 nm A:                         ≤0.02
  λ: 500 nm A:                         ≤0.02
RP gradient test                       corresponds to standard
filter test                            corresponds to standard  

危险品标志  Xi
危险类别码  36/37/38
WGK Germany  1
HazardClass  8
PackingGroup  III
安全说明  24/25-36-26

用作分析试剂、缓冲剂