1.02837

L-Cystine

for biochemistry

• Sinônimo(s): L-Cystine, Cys
• Fórmula empírica (Notação de Hill): C₆H₁₂N₂O₄S₂
• Número CAS: 56-89-3
• Peso molecular: 240.30
• Número MDL: MFCD00064228
• Código UNSPSC: 12352209
• Número do índice EC: 200-296-3
• NACRES: NA.21

Propriedades

• Nível de qualidade: 100
• forma: solid
• pf: 261-262 °C (decomposition)
• solubilidade: insoluble 0.19 g/L
• densidade: 1.677 g/cm³ at 20 °C
• densidade volumétrica: 300 kg/m³
• temperatura de armazenamento: 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
• chave InChI: LEVWYRKDKASIDU-IMJSIDKUSA-N

Descrição

Nota de análise

Assay (bromatometric, calculated on dried substance): ≥ 99.0 %
Identity (IR-spectrum): passes test
Appearance: white to almost white, fine-crystalline powder
Appearance of solution (0.2 mol/l, hydrochloric acid 1 mol/l): clear and colorless
Spec. rotation (α 20/D, 50 g/l, hydrochloric acid 1 mol/l, calc. on dried substance): -220.0 to - 225.0
Chloride (Cl): ≤ 0.02 %
Sulfate (SO₄): ≤ 0.05 %
Heavy metals (as Pb): ≤ 0.001 %
As (Arsenic): ≤ 0.0005 %
Ca (Calcium): ≤ 0.001 %
Co (Cobalt): ≤ 0.0005 %
Fe (Iron): ≤ 0.0005 %
K (Potassium): ≤ 0.0005 %
Mg (Magnesium): ≤ 0.0005 %
Na (Sodium): ≤ 0.005 %
Zn (Zinc): ≤ 0.0005 %
NH₄ (Ammonium): ≤ 0.01 %
Foreign amino acids: ≤ 0.3 %
Other ninhydrine positive substances: ≤ 0.3 %
Loss on drying (105 °C; 3 h): ≤ 0.3 %

Informações de segurança

• Código de classe de armazenamento: 11 - Combustible Solids
• Classe de risco de água (WGK): WGK 1
• Ponto de fulgor (°F): Not applicable
• Ponto de fulgor (°C): Not applicable