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L-CYSTINE For Biochemistry

Product Code: 03145


Specifications

Appearance White to off white powder
Assay 98.5 - 101%
Specific optical rotation ([α]20/D; 20 g/L in 1 mol/L HCl; on dried substance) -218 to -224°
Chloride (Cl) Max 0.05%
Sulphate (SO4) Max 0.03%
Ammonium (NH4) Max 0.02%
Ninhydrin positive substance Max 0.2%
Loss on drying (at 110°C) Max 0.5%
Sulphated ash Max 0.1%
Iron (Fe) Max 0.002%
Lead (Pb) Max 0.001%

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