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L(-)-Cystine 98.5-101.5% (base substance sèche) FCC pour production biopharmaceutique, SAFC®

Fournisseur: MERCK PRODUCTION CHEMICALS

1.02836.1000 1.02836.9029
1.02836.1000EA 511 EUR
1.02836.1000 1.02836.9029
L(-)-Cystine 98.5-101.5% (base substance sèche) FCC pour production biopharmaceutique, SAFC®
L(-)-Cystine
Formule: HOOCCH(NH₂)CH₂SSCH₂CH(NH₂)COOH
Point d'ébullition: 428 °C (1013 hPa)
Point de fusion: 261…262 °C (dec.)
Densité: 1.677 g/cm³ (20 °C)
Température de stockage: Température ambiante
Numéro MDL: MFCD00064228
Numéro CAS: 56-89-3
EINECS: 200-296-3
Merck Index: 13,02811

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Résultats des tests de spécification

Assay (ex N, calc. on dried substance) 98.5 - 101.5 %
Identity (IR-spectrum) Passes Test
Appearance White to almost white, fine-crystalline powder
Appearance of solution (100 g/l, hydrochloric acid 2 mol/l) Clear and Colorless
Spec. Rotation (α20/D, 20 g/l, Hydrochloric Acid 1 mol/l, Previously Dried Substance) –215 to –225
Heavy Metals (as Pb) ≤10 ppm
Pb (Lead) ≤5 ppm
Ninhydrin - Positive Substances (LC) (Largest Single Impurity) ≤0.2 %
Ninhydrin - Positive Substances (LC) (Sum of all Impurities) ≤0.5 %
Sulfated Ash (800 °C) ≤0.1 %
Loss on Drying (105 °C; 3 h) ≤0.2 %


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