L-Cysteine used for food with best price
46 Inquiries
52-90-4
Food Grade
QINGDAO
25kg/2kg Cardboard Drum
2020-05-27
L-glutamate, glycine, l-tyrosine,D-Pyroglutamic?acid?ethyl?ester-amino acids and derivatives,N-Acetyl-L-Lysine,D-Leucine?,Silicristin,L-Arginine-L-Aspartate??
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Product Description
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Seller Information
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Inquiry History
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Description
Chemical properties: colorless to white fine columnar crystal or white crystalline powder, with a slight special smell and taste (slightly acidic). Reducing, anti-oxidant and preventing non-enzymatic browning. Melting point 175 ° C (decomposition). Soluble in water, the aqueous solution is acidic, the pH value is 1.2 at 3%, 1.7 at 1%, and 2.4 at 0.1%. Also soluble in ethanol, ammonia and acetic acid, insoluble in ether, acetone, benzene, carbon disulfide and chloroform. One of the amino acids, but it is a non-essential amino acid.
Uses: bread improver; nutritional supplement; antioxidant; color protectant. It has detoxification effect on acrylonitrile and aromatic acid poisoning; it has the effect of preventing radiation damage; it has the effect of treating bronchitis and phlegm; it has the detoxification effect of absorbing alcohol and converting it into acetaldehyde in the body. According to GB2760-96, it is allowed to be used in spices. Uses for the treatment of skin diseases such as eczema, urticaria, freckles, and its series of products are widely used in medicine, food and cosmetics industry
Uses: Used in biochemical research, as an antidote for hepatitis, liver poisoning, radioactive drug poisoning, antimony poisoning, etc.
Uses: mainly used in medicine, cosmetics, biochemical research, etc. Used in bread ingredients to promote the formation of gluten and promote fermentation, mold release, and aging prevention. Used in natural juice to prevent vitamin C from oxidizing and prevent the juice from turning brown. This product has detoxification effect and can be used for acrylonitrile poisoning and aromatic acid poisoning. This product also has the effect of preventing radiation damage to the human body, and is also a drug for the treatment of bronchitis, especially as a phlegm medicine (mostly used in the form of acetyl L-cysteine methyl ester. Cosmetics are mainly used for cosmetic water, Perm solution, skin cream for preventing sun exposure, etc.
Uses: Widely used in medicine, food and cosmetic industries.
Uses: mainly used in medicine, cosmetics, biochemical research, etc. Used in bread ingredients to promote the formation of gluten and promote fermentation, mold release, and aging prevention. It is used to treat eczema, urticaria, freckles and other skin diseases.
Uses: NMDA glutamate receptor stimulantBasic 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
Categories:
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 IdentificationClassification 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 StoragePrecautions 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.
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Seller Information
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Business Type:
Manufactory
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Main Products:
L-glutamate, glycine, l-tyrosine,D-Pyroglutamic?acid?ethyl?ester-amino acids and derivatives,N-Acetyl-L-Lysine,D-Leucine?,Silicristin,L-Arginine-L-Aspartate??
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Location:
Deyang city, sichuan province jingyang tianshan road 19, 1-11-1
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Payment Terms:
D/P
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Average lead Time:
60
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Total Annual Revenue:
$2.5 million-$5 million
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Total Employees:
201-300
Sichuan Tongsheng Amino Acid Co., Ltd. was established in 2004 and is located in Deyang City, the middle section of Chengmian Expressway, Chengdu Plain, Sichuan Basin. It has a superior geographical location and convenient transportation. The company is committed to the research and production of amino acids and amino acid derivatives and biochemical reagents. Its own patented technology has been recognized as a high-tech enterprise in the country and Sichuan Province; the output of various products has reached more than 1,000 tons. It is an innovative and fast-growing biochemical enterprise.
The company strictly manages in accordance with ISO9001: 2008 standards, production quality management follows GMP standards, and production workshops are constructed in accordance with GMP standards; quality control complies with CP medical food grade and Japanese Ajinomoto AJI, US USP standards and reagent grade BR standards.
The company pays attention to product research and development, has established a special product research and development institution, and established close contact and cooperation with domestic well-known universities and colleges in scientific research. In addition to providing you with standard products at a mature process level, the company can also customize products according to the individual needs of users.
For a long time, the company has paid attention to research and development and market research, and introduced excellent talents, striving to build the company into a domestic excellent professional supplier of amino acids, derivatives and reagents. Through unremitting efforts, we have established long-term business cooperation relations with enterprises in more than 30 countries and regions around the world. The company follows the corporate philosophy of "Tongsheng, Tongsheng, Win-win" and adheres to the guiding principles of "market orientation, innovation as the driving force, quality as life, efficiency and development, and integrity as the foundation". Serve customers. -
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Inquiry History46 Inquiries
Country Product Purchase Quantity Date Posted 
India
L-cysteine
5.00 KG Dec 2, 2025
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L-Cysteine
1.00 KG Jul 14, 2026
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L-Cysteine
100.00 KG Jun 7, 2025
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1.00 KG Nov 25, 2025
India
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1.00 KG May 13, 2025
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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 KG Feb 24, 2026
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 Post an enquiry for this product
