L-Cysteine S-Sulfate Na
Spectral Characteristics (Auxiliary Physical Property Indicators) of L-Cysteine S-Sulfate Na Infrared (IR) spectrum: Characteristic absorption peaks include: 3300–3500 cm⁻¹ (stretching vibration of N-H in the amino group), 1600–1650 cm⁻¹ (bending vibration of N-H), 1200–1250 cm⁻¹ (stretching vibration of S=O in the sulfonate group), and 600–700 cm⁻¹ (stretching vibration of S-S bond), which can be used for qualitative identification of the compound. Ultraviolet (UV) spectrum: It has a weak absorption peak at 210–220 nm in aqueous solution, which is caused by the n→π* transition of the carboxyl group and the amino group. There is no obvious absorption above 250 nm, so it will not cause color changes in the application system.
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