merck millipore,默克密理愽
  • merck millipore,默克密理博,104351,L-组氨酸

  • merck millipore,默克密理博,104351,L-组氨酸

    产品名称：L-组氨酸
    产品型号：104351
    for biochemistry

    merck millipore,默克密理博,104351,L-组氨酸

  • 产品介绍
  • merck millipore,默克密理博,104351,L-组氨酸

    重要规格表

    经验配方 CAS号
    C₆H₉N₃O₂71-00-1
    描述
    产品目录编号 104351
    同义词 His
    产品信息
    CAS号 71-00-1
    EC号 200-745-3
    Hill配方 C₆H₉N₃O₂
    Molar Mass 155.16 g/mol
    HS代码 2933 29 90
    结构配方图像
    理化信息
    熔点 272 - 273 °C (分解)
    pH值 7.7 (10 g/l, H₂O, 20 °C)
    容积密度 430 kg/m³
    溶解度 38.2 g/l (20 °C)
    毒性学信息
    LD 50口服 LD50 Rat > 5110 mg/kg
    GHS安全信息
    RTECS MS3070000
    储存类别 10 - 13 其它液体及固体
    WGK WGK 1 轻度的水危害
    规格
    规格
    Assay (acidimetric, calculated on dried substance)≥ 99.0 %
    Identity (IR-spectrum)passes test
    Appearancewhite to almost white, fine-crystalline powder or colorlesscrystals
    Appearance of solution (0.5 mol/l, hydrochloric acid 1 mol/l)clear and colorless
    Spec. rotation (α 20/D, 50 g/l, hydrochloric acid 1 mol/l, calc. on dried substance)+10.5 to +11.5
    Chloride (Cl)≤ 0.02 %
    Sulphate (SO₄)≤ 0.01 %
    Heavy metals (as Pb)≤ 0.001 %
    As (Arsenic)≤ 0.0005 %
    Ca (Calcium)≤ 0.001 %
    Co (Cobalt)≤ 0.0005 %
    Fe (Iron)≤ 0.0005 %
    K (Potassium)≤ 0.0005 %
    Mg (Magnesium)≤ 0.0005 %
    Na (Sodium)≤ 0.005 %
    NH₄ (Ammonium)≤ 0.01 %
    Zn (Zinc)≤ 0.0005 %
    Foreign amino acids≤ 0.3 %
    Other ninhydrine positive substances≤ 0.1 %
    Loss on drying (105 °C; 3 h)≤ 0.3 %

    merck millipore,默克密理博,104351,L-组氨酸

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