Cysteine is a non-essential amino acid that can be synthesized by the human body under normal physiological conditions if a sufficient quantity of methionine is available. Cysteine is commonly used as a precursor in the food and pharmaceutical industries. Cysteine is used as a processing aid for baking, as an additive in cigarettes, as well as in the preparation of meat flavours.
DL-Cysteine, with its CAS registry number is 3374-22-9, is one kind of white solid. And its product categories are Pharmaceutical Intermediates; Amino Acids. It has slight bad smell and sour taste. In addition, this chemical is soluble in water, acetic acid, ammonia and ethanol, insoluble in ether, benzene, acetone, ethyl acetate, carbon disulfide and carbon tetrachloride.
| Name | DL-Cysteine | EINECS | 222-160-2 |
| CAS No. | 3374-22-9 | Density | 1.335 g/cm3 |
| PSA | 102.12000 | LogP | 0.02840 |
| Solubility | Soluble in water (partly), 1 N HCl (25 mg/ml), ethanol, and acetic acid. Insoluble in acetone. | Melting Point | 225 °C (dec.)(lit.)
|
| Formula | C3H7NO2S | Boiling Point | 293.883 °C at 760 mmHg |
| Molecular Weight | 121.16 | Flash Point | 131.536 °C |
| Transport Information | N/A | Appearance | colorless or white crystaline powder |
Appearance and properties: white solid
Density: 1.334 g/cm</sup>3 </sup>
Boiling point: 293.9ºC at 760 mmHg
Melting point: 225ºC (dec.)
Flash point: 131.5ºC
Refractive index: 1.549
Stable. Incompatible with strong oxidizing agents,
Storage conditions: Store in a tightly closed container. Store in a cool, dry, well-ventilated area away from incompatible substances. Refrigerator (approx 4ºC).
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