DL-Cysteine , 97% , 3374-22-9

Synonym(s):
(±)-2-Amino-3-mercaptopropionic acid

CAS NO.：3374-22-9

Empirical Formula: C3H7NO2S

Molecular Weight: 121.16

MDL number: MFCD00004881

EINECS: 222-160-2

PRODUCT Properties

• Melting point: 225 °C (dec.) (lit.)
• Boiling point: 293.9±35.0 °C(Predicted)
• Density: 1.197 (estimate)
• refractive index: 1.5130 (estimate)
• storage temp.: Keep in dark place,Inert atmosphere,Room temperature
• solubility: Aqueous Acid (Sparingly), DMSO (Sightly), Water (Slightly)
• pka: 2.07±0.10(Predicted)
• form: Powder
• color: White to off-white
• Water Solubility: Soluble in water (partly), 1 N HCl (25 mg/ml), ethanol, and acetic acid. Insoluble in acetone.
• BRN: 1721406
• Stability: Stable. Incompatible with strong oxidizing agents,
• Major Application: peptide synthesis
• Cosmetics Ingredients Functions: ANTIOXIDANT; HAIR CONDITIONING; REDUCING; HAIR WAVING OR STRAIGHTENING; FRAGRANCE; ANTISTATIC
• InChI: 1S/C3H7NO2S/c4-2(1-7)3(5)6/h2,7H,1,4H2,(H,5,6)
• InChIKey: XUJNEKJLAYXESH-UHFFFAOYSA-N
• SMILES: NC(CS)C(O)=O
• LogP: 0.230 (est)
• CAS DataBase Reference: 3374-22-9(CAS DataBase Reference)
• NIST Chemistry Reference: DL-Cysteine(3374-22-9)

Description and Uses

DL-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.

Safety

• Symbol(GHS): GHS05,GHS07
• Signal word: Danger
• Hazard statements: H302+H332-H314-H335
• Precautionary statements: P260-P280-P301+P312-P303+P361+P353-P304+P340+P310-P305+P351+P338
• target organs: Respiratory system
• PPE: dust mask type N95 (US), Eyeshields, Gloves
• Hazard Codes: Xn,Xi,C
• Risk Statements: 20/21/22-36/37/38-22-35
• Safety Statements: 26-36-37/39-45-36/37/39
• RIDADR: UN 2923 6.1(8) / PGIII
• WGK Germany: 3
• RTECS: HA1595000
• F: 8-10-23
• HazardClass: 8, 6.1
• HS Code: 29309013
• Storage Class: 6.1C - Combustible acute toxic Cat.3; toxic compounds or compounds which causing chronic effects
• Hazard Classifications: Acute Tox. 4 Inhalation; Acute Tox. 4 Oral; Eye Dam. 1; Skin Corr. 1A; STOT SE 3
• Limited Quantities: 5.0 kg (11 lbs) (solid)
• Excepted Quantities: Max Inner Pack (30g or 30ml) and Max Outer Pack (1Kg or 1L)