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Merck 102839 L-Cysteine hydrochloride monohydrate 25 Gr
Katalog No: 102839.0025
Marka: Merck
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Merck 102839 L-Cysteine hydrochloride monohydrate for biochemistry
Synonyms: Cys, L-Cysteinium Chloride Monohydrate, L-Cysteine Hydrochloride, Monohydrate
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Merck 102839 L-Cysteine hydrochloride monohydrate for biochemistry
Temel Özellikler Tablosu
CAS # | Empirical Formula |
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7048-04-6 | C₃H₈ClNO₂S * H₂O |
Açıklama | |
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Katalog Numarası | 102839 |
Eş anlamlı | Cys, L-Cysteinium Chloride Monohydrate, L-Cysteine Hydrochloride, Monohydrate |
Ürün Bilgisi | |
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CAS Numarası | 7048-04-6 |
EC Numarası | 200-157-7 |
Tepe Formülü | C₃H₈ClNO₂S * H₂O |
Molar Kütle | 175.64 g/mol |
HS Kodu | 2930 90 16 |
Structure formula Image | |
Quality Level | MQ100 |
Fizikokimyasal Bilgiler | |
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Yoğunluk | 1.54 g/cm3 |
Erime Noktası | 64 °C |
pH Değeri | 0.8 - 1.2 (100 g/l, H₂O, 20 °C) |
Buhar basıncı | <0.1 hPa (20 °C) |
Kütle yoğunluğu | 780 kg/m3 |
Çözünürlük | 650 g/l |
Özellikler | |
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Assay (alkalimetric, calculated on dried substance) | 98.5 - 101.0 % |
Özdeşlik (IR-spectrum) | Testi geçer |
Özdeşlik (wet chemistry) | Testi geçer |
Appearance | white or almost white, crystalline powder or colorless crystals |
Appearance of solution (25 g/l, water) | clear and not more intense in color than reference solution BY6 |
Spec. rotation (α 20/D, 80 g/l, hydrochloric acid 250 g/l, calc. on dried substance) | +5.5 to +7.0 |
Sulfate (SO₄) | ≤ 200 ppm |
Heavy metals (as Pb) | ≤ 10 ppm |
Fe (Iron) | ≤ 10 ppm |
Ninhydrin-positive substances (LC) (impurity A (570 nm)) | ≤ 0.5 % |
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) | ≤ 1.0 % |
Sulfated ash (600 °C) | ≤ 0.1 % |
Loss on drying (Vacuum < 2,0 kPa, P2O5, 20 h) | 8.5 - 12.0 % |
Residual solvents (ICH Q3C) | excluded by manufacturing process |
Sulfated ash (600 °C) | ≤ 0.1 % |
Loss on drying (Vacuum < 0.7 kPa, P₂O₅, 24 h) | 8.0 - 12.0 % |
Bacterial endotoxins | ≤ 6.0 I.U./g |