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咪唑
Imidazole
別名： 甘噁啉 1,3-Diazole Glyoxaline 1,3-diaza-2,4-cyclopentadiene n,n'-vinylene-formamidin
Cas號： 288-32-4 M D L： --MFCD00005183
分子式： C3H4N2 分子量： 68.08
貨號 品名 規(guī)格 包裝 單價 貨期 庫存
JD1227163467 咪唑 ＞99.0% 100g 54元 現(xiàn)貨 10
JD1227163465 咪唑 ＞99.0% 500g 217元 現(xiàn)貨 2
JD1227146742 咪唑 99.5%，分子生物學(xué)級 25g 1180元 現(xiàn)貨 40
JD1227146741 咪唑 99.5%，分子生物學(xué)級 5g 352元 現(xiàn)貨 100
JD1227146740 咪唑 99.5%，用于熒光分析 25g 748元 現(xiàn)貨 40
JD1227146739 咪唑 99.5%，用于熒光分析 5g 278元 現(xiàn)貨 100
JD1227146737 咪唑 99.5%，用于緩沖溶液 1kg 1155元 現(xiàn)貨 1
JD1227146735 咪唑 99.5%，用于緩沖溶液 500g 326元 現(xiàn)貨 5
JD1227146734 咪唑 99.5%，用于緩沖溶液 100g 150元 現(xiàn)貨 10
物流提示：偏遠地區(qū)如新疆西藏寧夏甘肅等地可能無法運送液體，下單前請聯(lián)系客服。
性狀： 無色或白色棱柱體結(jié)晶。易溶于水、乙醇、乙醚、氯仿和吡啶，微溶于苯，極微溶于石油醚。半數(shù)致死量(小鼠，經(jīng)口)1880mg/kg。有腐蝕性。
熔點：86-92℃
沸點：257℃
閃點：145℃
質(zhì)量標(biāo)準(zhǔn)：    
   99%:

外觀Appearance                          白色薄片或結(jié)晶
紅外光譜鑒別Infrared spectrometry       和對照匹配
純度Purity                              ≥99.0% (GC)  
熔點Melting point                       85°C - 90°C
水分water                               ≤0.2%(K.F)


99.5%（用于緩沖溶液）:

外觀Appearance                          白色至類白色粉末
紅外光譜鑒別Infrared spectrometry       Conforms
純度Purity                              ≥99.5% (GC)  
熔點Melting point                       86°C - 92°C
灼燒殘渣ign. residue (900 °C)          ≤0.1%
pH                                      9.5-11.0 (25 °C, 50 mg/mL in H2O)
pKa (25 °C)                            6.95
氯chloride (Cl-):                       ≤50 ppm
硫酸根sulfate (SO42-):                  ≤50 ppm
  Ca:                                   ≤10 ppm
  Cd:                                   ≤5 ppm
  Co:                                   ≤5 ppm
  Cr:                                   ≤5 ppm
  Cu:                                   ≤5 ppm
  Fe:                                   ≤5 ppm
  K:                                    ≤50 ppm
  Mg:                                   ≤5 ppm
  Mn:                                   ≤5 ppm
  Na:                                   ≤50 ppm
  Ni:                                   ≤5 ppm
  Pb:                                   ≤5 ppm
  Zn:                                   ≤5 ppm


品級Grade                               熒光分析級  
                                    (for Fluorimetric Analysis)
外觀Appearance                          白色至類白色粉末
紅外光譜鑒別Infrared spectrometry       Conforms
純度Purity                              ≥99.5% (GC)  
熔點Melting point                       86°C - 92°C
不溶物insoluble matter,                 passes filter test
水分water                               ≤0.2%（K.F)  
灼燒殘渣ign. residue (900 °C)          ≤0.05%
熒光fluorescence λex 200-600 nm; λem 300-800 nm (corresponds)
pH                                      9.5-11.0 (25 °C, 0.1 M in H2O)
pKa (25 °C)                            6.95
氯chloride (Cl-):                       ≤50 ppm
硫酸根sulfate (SO42-):                  ≤50 ppm
  Al:                                   ≤10 ppm
  As:                                   ≤0.1 ppm
  Ba:                                   ≤5 ppm
  Bi:                                   ≤5 ppm
  Ca:                                   ≤50 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 0.1 M in H2O
紫外吸收UV absorption
  λ: 260 nm Amax:                       0.10
  λ: 280 nm Amax:                       0.10


品級Grade                               分子生物學(xué)級  
                                      (for molecular biology)
DNA酶DNases,                            none detected
RNA酶RNases,                            none detected
磷酸酶phosphatases,                     none detected
蛋白酶proteases,                        none detected
外觀Appearance                          白色至類白色粉末
紅外光譜鑒別Infrared spectrometry       Conforms
純度Purity                              ≥99.5% (GC)  
熔點Melting point                       86°C - 92°C
不溶物insoluble matter,                 passes filter test
水分water                               ≤0.2%（K.F)  
灼燒殘渣ign. residue (900 °C)          ≤0.05%
熒光fluorescence λex 200-600 nm; λem 300-800 nm (corresponds)
pH                                      9.5-11.0 (25 °C, 0.1 M in H2O)
pKa (25 °C)                            6.95
氯chloride (Cl-):                       ≤50 ppm
硫酸根sulfate (SO42-):                  ≤50 ppm
  Al:                                   ≤10 ppm
  As:                                   ≤0.1 ppm
  Ba:                                   ≤5 ppm
  Bi:                                   ≤5 ppm
  Ca:                                   ≤50 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 0.1 M in H2O
紫外吸收UV absorption
  λ: 260 nm Amax:                       0.10
  λ: 280 nm Amax:                       0.10
貯存： 密封陰涼干燥保存。
用途  鈷的測定。有機合成。用于抗新陳代謝、抗組織胺。pH值在6.2-7.8范圍內(nèi)，可作為緩沖液。天門冬氨酸和谷氨酸滴定