Merck
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1.02836

SAFC

L-Cystine

suitable for biopharmaceutical production FCC

Synonym(s):
L-Cystine, Cys
Empirical Formula (Hill Notation):
C6H12N2O4S2
CAS Number:
Molecular Weight:
240.30
Número MDL:
Número índice de la CE:
200-296-3

reg. compliance

FCC

Nivel de calidad

300

formulario

solid

mp

261-262 °C (decomposition)

solubilidad

insoluble 0.19 g/L

densidad

1.677 g/cm3 at 20 °C

densidad aparente

300 kg/m3

temp. de almacenamiento

2-30°C

InChI

1S/C6H12N2O4S2/c7-3(5(9)10)1-13-14-2-4(8)6(11)12/h3-4H,1-2,7-8H2,(H,9,10)(H,11,12)/t3-,4-/m0/s1

InChI key

LEVWYRKDKASIDU-IMJSIDKUSA-N

Nota de análisis

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 (α 20/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 %
Corresponds to FCC V

Código de clase de almacenamiento

11 - Combustible Solids

WGK

WGK 1

Punto de inflamabilidad F

Not applicable

Punto de inflamabilidad C

Not applicable

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