L-Cysteine CAS 52-90-4

Bread improver; nutritional supplement; antioxidant; color protection agent. It has detoxification effect on acrylonitrile and aromatic acid; it has preventive effect on radiation damage; it has treatment effect on bronchitis and phlegm; it has detoxification effect on absorbing alcohol and converting it into acetaldehyde in the body. According to the provisions of GB2760-96, it is permitted to be used in spices.

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Model:
52-90-4
Brand:
bosschemical
Code:
52-90-4

Product Description

L-Cysteine Basic information
description Chemical properties Amino acids health benefits Uses Cysteine Metabolism Production methods synthesis physiological effects
Product Name:	L-Cysteine
CAS:	52-90-4
MF:	C3H7NO2S
MW:	121.16
EINECS:	200-158-2
Mol File:	52-90-4.mol
L-Cysteine Chemical Properties
Melting point	240 °C (dec.) (lit.)
alpha	8.75 º (c=12, 2N HCl)
Boiling point	293.9±35.0 °C(Predicted)
bulk density	300kg/m3
density	1.197 (estimate)
FEMA	3263 \| L-CYSTEINE
refractive index	8.8 ° (C=8, 1mol/L HCl)
storage temp.	Store below +30°C.
solubility	H2O: 25 mg/mL
pka	1.92(at 25℃)
form	Solid
color	White
PH	4.5-5.5 (100g/l, H2O, 20℃)
Odor	sulfury
Odor Type	sulfurous
optical activity	Optical rotation: +8° to +9° (c = 5, 1 N HCl, 20°C).
biological source	non-animal source
Water Solubility	280 g/L (25 ºC)
λmax	λ: 260 nm Amax: 1.5
λmax	λ: 280 nm Amax: 0.2
Sensitive	Air Sensitive
Merck	142,781
JECFA Number	1419
BRN	1721408
Stability:	Stability Stable, but may be air sensitive. Incompatible with oxidizing agents, bases.
LogP	-2.49
CAS DataBase Reference	52-90-4(CAS DataBase Reference)
NIST Chemistry Reference	L-Cysteine(52-90-4)
EPA Substance Registry System	L-Cysteine (52-90-4)

L-Cysteine CAS 52-90-4 C3H7NO2S Bread improver Nutritional supplement antioxidant Color protector

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Chemical detection methods

Spectroscopic Analysis Methods

Ultraviolet-Vis Spectrophotometry (UV-Vis)
Infrared Spectroscopy (IR/FTIR)
Atomic Absorption Spectroscopy (AAS)
X-ray Fluorescence Spectroscopy (XRF)
Nuclear Magnetic Resonance Spectroscopy (NMR)

Chromatographic Analysis

Gas Chromatography (GC)
High Performance Liquid Chromatography (HPLC)
Ion Chromatography (IC)
Thin Layer Chromatography (TLC)

Mass Spectrometry Analysis

GC-MS / LC-MS/MS: Qualitative and Quantitative Analysis
ICP-MS: Trace Metal Elements (ppb Level)
TOF-MS: Precise Molecular Weight Determination

Electrochemical analysis methods

Polypotentiometric methods
Conductivity methods
Polarographic methods / Voltammetric methods
Coulometric analysis

Thermal Analysis Methods

Thermogravimetric Analysis (TGA)
Differential Scanning Calorimetry (DSC)
Differential Thermal Analysis (DTA)

Classical wet chemical analysis

Titration analysis
Gravity analysis