• D(+)-乳糖,一水 [64044-51-5]

  • 英文名:D-Lactose monohydrate
  • 别名:一水乳糖
  • CAS号:64044-51-5 分子式:C12/H22O11·H2O 分子量:360.31
P142796-250g D(+)-乳糖,一水 [64044-51-5] 98% 250g 142.00 促销价:106.50
P142794-5kg D(+)-乳糖,一水 [64044-51-5] 98% 5kg 800.00 促销价:600.00
P142793-1kg D(+)-乳糖,一水 [64044-51-5] 98% 1kg 247.00 促销价:185.25
P142795-500g D(+)-乳糖,一水 [64044-51-5] >98.0%(HPLC) 500g 500.00 促销价:375.00
P142796-25g D(+)-乳糖,一水 [64044-51-5] >98.0%(HPLC) 25g 285.00 促销价:213.75
P142795-100g D(+)-乳糖,一水 [64044-51-5] Ultra Pure,≥99.5% (HPLC) 100g 1257.00 促销价:942.75
P142792-5g D(+)-乳糖,一水 [64044-51-5] Ultra Pure,≥99.5%(HPLC) 5g 164.00 促销价:123.00
订货编号 商品名称 规格 包装 单价 促销价 会员价 数量
P142796-250g D(+)-乳糖,一水 [64044-51-5] 98% 250g 142.00 106.50 登录可见
P142796-250g D(+)-乳糖,一水 [64044-51-5] 98% 250g 142.00 促销价:106.50
P142794-5kg D(+)-乳糖,一水 [64044-51-5] 98% 5kg 800.00 600.00 登录可见
P142794-5kg D(+)-乳糖,一水 [64044-51-5] 98% 5kg 800.00 促销价:600.00
P142793-1kg D(+)-乳糖,一水 [64044-51-5] 98% 1kg 247.00 185.25 登录可见
P142793-1kg D(+)-乳糖,一水 [64044-51-5] 98% 1kg 247.00 促销价:185.25
P142795-500g D(+)-乳糖,一水 [64044-51-5] >98.0%(HPLC) 500g 500.00 375.00 登录可见
P142795-500g D(+)-乳糖,一水 [64044-51-5] >98.0%(HPLC) 500g 500.00 促销价:375.00
P142796-25g D(+)-乳糖,一水 [64044-51-5] >98.0%(HPLC) 25g 285.00 213.75 登录可见
P142796-25g D(+)-乳糖,一水 [64044-51-5] >98.0%(HPLC) 25g 285.00 促销价:213.75
P142795-100g D(+)-乳糖,一水 [64044-51-5] Ultra Pure,≥99.5% (HPLC) 100g 1257.00 942.75 登录可见
P142795-100g D(+)-乳糖,一水 [64044-51-5] Ultra Pure,≥99.5% (HPLC) 100g 1257.00 促销价:942.75
P142792-5g D(+)-乳糖,一水 [64044-51-5] Ultra Pure,≥99.5%(HPLC) 5g 164.00 123.00 登录可见
P142792-5g D(+)-乳糖,一水 [64044-51-5] Ultra Pure,≥99.5%(HPLC) 5g 164.00 促销价:123.00
  •  订货编号
  •  商品名称
  •  规格
  •  包装
  •  单价
  •  促销价
  •  会员价
  •  数量

质量标准

  

品级Grade                                 超纯级  
                                     (Ultra Pure,≥99.5% (HPLC))
纯度Purity                                ≥99.5% (HPLC)
比旋光度Specific rotation [a]20/D [α]20/D +53±1°, 22 hr, c = 10% in H2O
insoluble matter,                         passes filter test
Residue on ignition                       ≤0.05% (as SO4)
pH                                        3.5-6.0 (25 °C, 0.5 M in H2O)
solubility H2O:                           soluble0.5 M at 20 °C, clear, colorless
anion traces
  chloride (Cl-):                         ≤50 ppm
  sulfate (SO42-):                        ≤50 ppm
cation traces
  Al:                                     ≤5 ppm
  As:                                     ≤0.1 ppm
  Ba:                                     ≤5 ppm
  Bi:                                     ≤5 ppm
  Ca:                                     ≤10 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 0.5 M in H2O
UV absorption
  λ: 260 nm A:                            ≤0.02
  λ: 280 nm A:                            ≤0.02


98%:


外观Appearance                            White Powder
Infrared spectrum                          Conforms to Structure
纯度Purity                                ≥98.0% (HPLC)
比旋光度Specific rotation [α]20/D         +50~+53°, 22 hr, c = 4.5 in H2O
水分Water (by Karl Fischer)               4.0- 6.0 %
灼烧残渣Residue on ignition (Ash)         ≤0.03%
不溶物Insoluble matter                    ≤0.005%
葡萄糖Dextrose                            passes test
铁Iron (Fe)                               ≤5 ppm
重金属Heavy Metal (As Pb)                 ≤5 ppm

  

危险性质

  

用途及存储

超纯级用作液体固定相组份,GLC分离硝基二甲苯和二甲酚异构体

  密封干燥保存。