Alfa Aesar™ L-Cysteine, 98+%


Overview
Brand: Alfa Aesar™

Manufacturer Part Number: A10435-0B

L-CYSTEINE, 99% 1000G

UNSPSC: 12352111

Code: NEW

Additional Details:
Additional Details: CAS Number: 52-90-4 Weight: 0.01000kg


Quantity 1000g

Product Code. 11478643

Quantity Price
1 £ 266.06 / 1000g
Estimated Shipment date
from Supplier 07-12-2016
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Description and Specification

Chemical Identifiers

Chemical Name or Material L-Cysteine
CAS 52-90-4
Molecular Formula C3H7NO2S
Formula Weight 121.16g/mol
MDL Number MFCD00064306
Beilstein 1721408
Merck Index 14,2781
Synonym L-2-Amino-3-mercaptopropionic acid; H-Cys-OH

Specification

Melting Point ≈220°C (dec.)
Quantity 1000g
Odor Odorless
Optical Rotation +7.9° (c=5 in 5N HCl)
Chemical Name or Material L-Cysteine
CAS 52-90-4
Assay ≥98%
Molecular Formula C3H7NO2S
Formula Weight 121.16g/mol
MDL Number MFCD00064306
Beilstein 1721408
Merck Index 14,2781
Synonym L-2-Amino-3-mercaptopropionic acid; H-Cys-OH
Health Hazard 1 Warning
Health Hazard 2 GHS H Statement
H302
Harmful if swallowed.
Health Hazard 3 GHS P Statement
P264-P270-P301+P312-P330-P501a
Wash thoroughly after handling.
Do not eat, drink or smoke when using this product.
IF SWALLOWED: Call a POISON CENTER or doctor/physician if you feel unwell.
Rinse mouth.
Dispose of contents/container in accordance with local/regional/national/international regulations.
RTECS Number HA1600000
TSCA TSCA

Applications
L-Cysteine is used as a precursor in food, pharmaceutical and personal care products. It is actively involved in the production of flavors such as meat flavor obtained by reacting with sugars. Also used for the cleavage of disulfide bonds in the hair′s keratin. It plays an important role as a key raw material for the manufacture of N-acetyl-L-cysteine, S-carboxymethyl-L-cysteine and L-cysteine base. Its derivative, N-acetyl-L-cysteine is used as a dietary supplement. It acts as an antidote to acetaminophen overdose and prevents liver failure. It protects nerves from oxidation and thereby prevents illnesses like Alzheimer′s and Parkinson′s. Being an essential amino acid, it used as animal feed especially for sheep, which is responsible the growth of wool.

Solubility
Soluble in water, alcohol, acetic acid and aqueous ammonia. Insoluble in ether, acetone, ethyl acetate, benzene, carbon disulfide and carbon tetrachloride

Notes
Air sensitive. Incompatible with strong oxidizing agents.

Safety and Handling

Warning

GHS H Statement
H302
Harmful if swallowed.

GHS P Statement
P264-P270-P301+P312-P330-P501a
Wash thoroughly after handling.
Do not eat, drink or smoke when using this product.
IF SWALLOWED: Call a POISON CENTER or doctor/physician if you feel unwell.
Rinse mouth.
Dispose of contents/container in accordance with local/regional/national/international regulations.