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L-Cysteine Food Grade buy - large image1
L-Cysteine Food Grade buy - image1

L-Cysteine Food Grade

44 Inquiries

Unit Price: Get Latest Price
CAS No.:

52-90-4

Grade:

Food Grade

Port:

NINGBO

Price valid (until):

2017-04-27

Company Type:
Manufactory
Location:
China
Qualification:
Main Products:

L-CYSTEINE HCL MONO /ANHYDROUS,L-CYSTINE ,,L-TYROSIEN, L-LEUCINE., L-ARGININE ASPARTATE ,,L-TRYPTOPHAN,L-THREONINE N-ACETYL-L-CYSTEINE,N-ACETYL-L-TYROSINE

  • Product Description

  • Seller Information

  • Inquiry History

  • Description
    Mainly used in medicine, cosmetics, biochemical research and so on. Used in bread stock to promote the formation of gluten and promote fermentation, mold, and prevent aging. Used in natural fruit juices to prevent oxidation of vitamin C and prevent juices from becoming brown. It can be used as an antidote to acrylonitrile poisoning and aromatic acidosis. The product also acts as a preventive against radiation damaging the body and is also a cure for bronchitis, especially as expectorant drugs (mostly in the form of acetyl L- cysteine methyl ester salts). Cosmetics are mainly used for beauty water, perm liquid, anti sunburn skin cream, cream, etc.

    Basic Info
    Product Name:

    L-(+)-Cysteine

    Other Name:

    L-Cysteine;Cysteine,L-;Half-cystine;β-Mercaptoalanine;Thioserine;L-(+)-Cysteine;Cysteine;Propanoic acid,2-amino-3-mercapto-,(R)-;Cystein;L-Alanine,3-mercapto-;NSC 8746;(R)-2-Amino-3-mercaptopropanoic acid;(R)-Cysteine;2-Amino-3-mercaptopropionic acid;L-Cys;E 920;(R)-2-Amino-3-mercaptopropanoic acid;(R)-2-Amino-3-sulfanylpropanoic acid;(2R)-2-Amino-3-sulfanylpropanoic acid;2-Amino-3-mercaptopropanoic acid;11: PN: WO2021055880 SEQID: 12 claimed protein;4371-52-2;154605-72-8;1404190-35-7

    CAS No.:

    52-90-4

    Molecular Formula:

    C3H7NO2S

    InChIKeys:

    InChIKey=XUJNEKJLAYXESH-REOHCLBHSA-N

    Molecular Weight:

    121.15800

    Exact Mass:

    121.16

    EC Number:

    200-158-2

    UNII:

    K848JZ4886

    DSSTox ID:

    DTXSID8022876

    NCI Thesaurus Code:

    C29609

    Color/Form:

    Colorless crystals|White crystals

    HScode:

    2930901000

    Characteristics
    PSA:

    102.12000

    XLogP3:

    -2.5

    Appearance:

    DryPowder

    Density:

    1.6666 g/cm3 @ Temp: 45.00 °C

    Melting Point:

    240 °C (decomp)

    Boiling Point:

    293.9ºC at 760 mmHg

    Flash Point:

    131.5ºC

    Refractive Index:

    8.8 ° (C=8, 1mol/L HCl)

    Water Solubility:

    H2O: 280 g/L (25 ºC)

    Storage Conditions:

    Store at RT.

    Vapor Pressure:

    6.73X10-7 mm Hg at 25 deg C (est)

    Toxicity:

    LD50 orally in Rabbit: 1890 mg/kg

    Specific rotation:

    Specific optical rotation: +6.5 deg at 25 °C/D (5 N HCl); +13.0 deg at 25 °C/D (glacial acetic acid)

    PKA:

    1.71None

    Henrys Law Constant:

    Henry's Law constant = 5.30X10-11 atm-cu m/mol at 25 °C (est)

    Dissociation Constants:

    1.71|pK1 1.71 /carboxylic/; pK2 8.33 /amine/; pK3 10.78 /sulfide/

    Collision Cross Section:

    149.57 Ų [M+H]+ [CCS Type: DT, Method: stepped-field]|151.34 Ų [M+Na]+ [CCS Type: DT, Method: stepped-field]|144.47 Ų [M-H]- [CCS Type: DT, Method: stepped-field]|113 Ų [M+H]+ [CCS Type: TW, Method: calibrated with polyalanine]|144 Ų [M-H]-

    Experimental Properties:

    Readily oxidizes to form a dimeric amino acid, cystine, in which the two cysteines are linked via a disulfide bridge, a common structural feature in proteins. Amino Acids and Proteins, D.M. Greenberg, Ed. (Charles C. Thomas, Springfield, IL, 1951) 950 pp.|In neutral or slightly alkaline aqueous solution it is oxidized to cystine by air. More stable in acidic solutions.|MP (anhydrous): 178 °C (decomposes). Specific optical rotation: +6.53 deg at 25 °C/D (calculated as cysteine) (c = 2 in 5M HCl); solubility >100 (20 °C) g/100 g H2O /L-Cysteine hydrochloride monohydrate/|Hydroxyl radical reaction rate constant = 7.96X10-11cu cm/molecule-sec at 25 °C (est)

    Hazard Identification

    Classification of the substance or mixture

    Acute toxicity - Category 4, Oral

    GHS label elements, including precautionary statements

    Pictogram(s)
    Signal word

    Warning

    Hazard statement(s)

    H302 Harmful if swallowed

    Precautionary statement(s)
    Prevention

    P264 Wash ... thoroughly after handling.

    P270 Do not eat, drink or smoke when using this product.

    Response

    P301+P317 IF SWALLOWED: Get medical help.

    P330 Rinse mouth.

    Storage

    none

    Disposal

    P501 Dispose of contents/container to an appropriate treatment and disposal facility in accordance with applicable laws and regulations, and product characteristics at time of disposal.

    Other hazards which do not result in classification

    no data available

    Handling and Storage

    Precautions for safe handling

    Handling in a well ventilated place. Wear suitable protective clothing. Avoid contact with skin and eyes. Avoid formation of dust and aerosols. Use non-sparking tools. Prevent fire caused by electrostatic discharge steam.

    Conditions for safe storage, including any incompatibilities

    Keep container tightly closed in a dry and well-ventilated place. Store under inert gas. Air sensitive. Storage class (TRGS 510): Non Combustible Solids.

  • Seller Information
    Business Type:

    Manufactory

    Main Products:

    L-CYSTEINE HCL MONO /ANHYDROUS,L-CYSTINE ,,L-TYROSIEN, L-LEUCINE., L-ARGININE ASPARTATE ,,L-TRYPTOPHAN,L-THREONINE N-ACETYL-L-CYSTEINE,N-ACETYL-L-TYROSINE

    Location:

    629 zhenning east road zhenhai ningbo china

    Payment Terms:

    TT against copy of documents,L/C,D/A

    Average lead Time:

    60

    Total Annual Revenue:

    $2.5 million-$5 million

    Total Employees:

    11-50

    Year of Establishment:

    1991

                        Ningbo Zhenhai Amino Acid Factory was established at the end of 1990. The factory is located on the coast of the beautiful East China Sea with convenient transportation. There are nearly 100 employees, the factory area is 10,000 square meters, the construction area is 5,000 square meters, and the fixed assets are 10 million yuan. With domestic advanced production equipment and testing capabilities, the annual production capacity of L-cysteine is 400 tons. The factory has strong technical force and ten technicians with intermediate level or above. It is one of the domestic professional manufacturers of cysteine series products. One. The main products of the factory are: 1, L-cysteine hydrochloride hydrate 2, L-cysteine hydrochloride anhydrous 3, L-cysteine 4, L-cystine 5, L- Leucine 6, L-tyrosine 7, L-arginine 8, L-arginine hydrochloride 9, L-histidine hydrochloride 10, L-isoleucine 11, L-va 12-L, threonine 13, L-ornithine hydrochloride 14, L-tryptophan 15, L-histidine 16, L-cysteine hydrochloride ethyl ester 17, L- Cysteine hydrochloride methyl ester 18, L-methionine 19, L-lysine base 20, L-lysine hydrochloride 21, L-alanine 22, L-proline 23 , L-serine 24, S-carboxymethyl-L-cysteine 25, N-ethyl ester-L-cysteine 26, N-ethyl ester-L-tyrosine 27, N-ethyl ester- L-leucine 28, DL-methionine 29, DL-tryptophan 30, DL-threonine 31, DL-isoleucine 32, DL-lysine 33, DL-valine 34, D- Tryptophan 35, D-threonine 36, D-methionine 37, D-isoleucine. All products of our factory comply with international standards such as Japanese Ajinomoto, American Pharmacopoeia, European Pharmacopoeia, and most of the products have obtained KOSHER certification. 99% of the products are exported and exported to Europe, the United States, Southeast Asia and other places. In recent years, the factory has been ranked ahead of its peers with high-quality products, good reputation, and good after-sales services. It has been rated as the key enterprise of foreign exchange earning in Zhejiang Province for three consecutive years and the largest enterprise in Zhejiang Province. In order to make the enterprise develop and grow continuously, the factory is currently cooperating with the scientific research departments of several domestic colleges and universities, and actively introducing talents, relying on scientific and technological strength, vigorously develop new amino acid products. Based on the concept of integrity and customer first, our factory hopes to establish good cooperative relations with friends and colleagues from all walks of life at home and abroad.

  • Inquiry History
    44 Inquiries
    Country Product Purchase Quantity Date Posted
    India

    L-cysteine

    5.00 KG Dec 2, 2025
    India

    L-Cysteine

    100.00 KG Jun 7, 2025
    India

    L-Cysteine

    1.00 KG Nov 25, 2025
    India

    L-Cysteine 

    1.00 KG May 13, 2025
    India

    L-Cysteine 

    1.00 KG Oct 8, 2024
    India

    L Cyteine

    25.00 KG May 21, 2026
    India

    L-Cysteine

    100 KG Dec 17, 2025
    India

    L-Cysteine

    1.00 MT Sep 26, 2023
    India

    L-Cysteine

    20.00 MT Dec 13, 2023
    India

    L-Cysteine

    1.00 KG Jan 28, 2026
    India

    L-Cysteine

    2.00 KG Jan 27, 2026
    Slovenia

    L-CYSTEINE

    400 KG Jan 20, 2026
    Egypt

    L-Cysteine

    1000 KG Jan 19, 2026
    India

    L-Cysteine

    1.00 KG Sep 8, 2025
    Pakistan

    L-Cysteine

    50.00 KG May 6, 2025
    India

    L-Cysteine

    1 MT Apr 23, 2025
    India

    L-Cystiene

    10.00 KG Mar 26, 2025
    India

    L-Cysteine

    1.00 KG Nov 14, 2024
    India

    L-Cysteine

    1.00 KG Oct 28, 2024
    India

    L-Cysteine

    10 KG Jun 11, 2024
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