Merck 1043500100 一水合L-组氨酸一盐酸盐,生物化学适用 (C₆H₁₀ClN₃O₂ * H₂O, 塑料瓶 100g)
制造商: Merck Model: 1043500100 - 报价要求
- 报价要求
Price (exclude VAT) 3,782,350 VND Price (include VAT) 4,160,585 VND
CAS number: 5934-29-2
EC number: 211-438-9
Hill Formula: C₆H₁₀ClN₃O₂ * H₂O
Molar Mass: 209.63 g/mol
Assay (calculated on dried substance): 99.0 - 101.0 %
Identity (IR-spectrum): passes test
Identity (wet chemistry): passes test
Appearance: white to almost white crystalline powder or colorless crystals
Appearance of solution (50 g/l CO₂-free water): clear and not more intense in color than reference solution BY₆
Spec. rotation (α 20/D, 110 g/l, hydrochloric acid 120 g/l, calc. on dried substance): +9.2 to +10.6
Sulfate (SO₄): ≤ 200 ppm
Heavy metals (as Pb): ≤ 10 ppm
As (Arsenic): ≤ 5 ppm
Ca (Calcium): ≤ 10 ppm
Co (Cobalt): ≤ 5 ppm
Fe (Iron): ≤ 5 ppm
K (Potassium): ≤ 5 ppm
Mg (Magnesium): ≤ 5 ppm
Na (Sodium): ≤ 50 ppm
Zn (Zinc): ≤ 5 ppm
Ninhydrin-positive substances (LC) (any ninhydrin-positive impurity): ≤ 0.2 %
Ninhydrin-positive substances (LC) (ammonium (570 nm)): ≤ 0.02 %
Ninhydrin-positive substances (LC) (total impurities): ≤ 0.5 %
Loss on drying (150 °C): 7.0 - 10.0 %
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