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MERCK

MERCK 102839.0025 L-Cysteine Hydrochloride Monohydrate for Biochemistry CAS No.1880366 (SD.M.102839.0025)

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MERCK 102839.0025 L-Cysteine Hydrochloride Monohydrate for Biochemistry CAS No.1880366

 

Description
Catalogue Number 102839
Synonyms Cys, L-Cysteinium Chloride Monohydrate, L-Cysteine Hydrochloride, Monohydrate
Product Information
CAS number 7048-04-6
EC number 200-157-7
Hill Formula C₃H₈ClNO₂S * H₂O
Molar Mass 175.60 g/mol
HS Code 2930 90 12
Structure formula Image Structure formula Image
Quality Level MQ100
Physicochemical Information
Density 1.51 g/cm3
Melting Point 176 °C
pH value 0.8 - 1.2 (100 g/l, H₂O, 20 °C)
Vapor pressure <0.1 hPa (20 °C)
Bulk density 780 kg/m3
Solubility 650 g/l
Safety Information according to GHS
RTECS HA2285000
Storage class 10 - 13 Other liquids and solids
WGK WGK 1 slightly hazardous to water
Disposal 3
Relatively unreactive organic reagents should be collected in container A. If halogenated, they should be collected in container B. For solid residues use container C.
Storage and Shipping Information
Storage Store at +2°C to +30°C.
Specifications
Assay (alkalimetric, calculated on dried substance) 98.5 - 101.0 %
Identity (IR-spectrum) passes test
Identity (wet chemistry) passes test
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
Global Trade Item Number
Catalogue Number GTIN
1028390025 04022536037400
1028390100 04022536037417
1028391000 04022536037424
1028399010 04022536692685
Etiketler
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