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Food Grade L-Cysteine Nutritional Supplement Food Grade Amino Acid CAS 52-90-4

Name: Food Grade L-Cysteine Nutritional Supplement Food Grade Amino Acid CAS 52-90-4
Brand: GUM GUAR
SKU: pr2602181106
Price: 6 USD
Availability: InStock

44 Inquiries

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CAS No.:

52-90-4

Grade:

Food Grade

Content:

90%

Port:

Poti

Brand:

GUM GUAR

Packaging:

Bulk packaging

Price valid (until):

2026-03-18

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SKY TRADING LLC

Company Type:

Distributor

Location:

Georgia

Qualification:

Main Products:

Ethanol,Retatrutide,SLES,Tirzepatide,GHK-CU,Semaglutide

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Product Description
Seller Information
Inquiry History

Description

Product Properties

L-cysteine, a common amino acid in organisms. Mainly used in medicine, cosmetics, biochemical research, etc. Used in bread to promote the formation of gluten, promote fermentation, mold release, and prevent aging. Used in natural juices to prevent vitamin C oxidation and prevent the juice from turning brown. This product has detoxification effect and can be used for acrylonitrile poisoning and aromatic acidosis. The product also has the effect of preventing radiation damage to the human body. It 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 beauty water, Perm lotion, sun-proof skin cream, etc.

Specification

Item	Standard
Appearance	White colored powder
Specific rotation[a]D20°	+ 8.3°~ +9.5°
State of solution (Transmittance)	≥95.0%
Loss on drying	≤0.50%
Residue on ignition	≤0.10%
Heavy metals(Pb)	≤10PPM
Chloride (Cl)	Chloride (Cl)
Arsenic (As2O3)	≤1PPM
Iron (Fe)	≤10PPM
Ammonium (NH4)	≤0.02%
Sulfate (SO4)	≤0.030%
Other amino acids	Chromatographically
PH value	4.5 ～ 5.5
Assay	Assay

Pls input...

Items	Specifications
Appearance	White colored powder
CAS	52-90-4
Efficacy:	Nutritional Supplement

Basic Info

Product Name:

L-Cysteine

Other Name:

(R)-2-Amino-3-mercaptopropanoic acid;3-mercapto-l-alanin;alpha-amino-beta-mercaptopropionicacid;alpha-Amino-beta-thiolpropionic acid;alpha-amino-beta-thiolpropionicacid;Cystein;half-cysteine;L-Cysteine - animal origin

CAS No.:

52-90-4

Molecular Formula:

C3H7NO2S

InChIKeys:

XUJNEKJLAYXESH-REOHCLBHSA-N

Molecular Weight:

121.16

BRN:

1721408

EC Number:

200-158-2

TSCA:

TSCA listed

Color/Form:

White

HScode:

29309012

Categories:

Food Antioxidants

Characteristics

λmax:

λ: 260 nm Amax: 1.5λ: 280 nm Amax: 0.2

Physical Properties:

Solubility 28 (25 ℃) g/100 mL solution, 16 (20 ℃) g/100 g H2O, pI 5.02, dissociation constants: pK1 1.71, pK2 8.27 (–SH), pK3 10.78.

Density:

1.197 (estimate)

Melting Point:

240 °C (dec.) (lit.)

Boiling Point:

293.9±35.0 °C(Predicted)

Refractive Index:

8.8 ° (C=8, 1mol/L HCl)

Water Solubility:

280 g/L (25 ºC)

Toxicity:

LD50 orally in Rabbit: 1890 mg/kg

Odor:

sulfury

PH:

4.5-5.5 (100g/l, H2O, 20℃)

PKA:

1.92(at 25℃)

Autoignition Temperature:

420 °C

Critical Temperature & Pressure:

Store below +30°C.

See More L-Cysteine Properties 

Hazard Identification

Classification of the substance or mixture

Acute toxicity - Category 4, Oral

GHS label elements, including precautionary statements

Precautionary statement(s)
Pictogram(s)
Signal word	Warning
Hazard statement(s)	H302 Harmful if swallowed
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.

See More L-Cysteine Safety Data Sheet 

Seller Information

Business Type:
Distributor

Main Products:
Ethanol,Retatrutide,SLES,Tirzepatide,GHK-CU,Semaglutide

Location:
Georgia, Tbilisi, Samgori district, police lane I, N5, floor 2, apartment N 4a

Payment Terms:
TT against copy of documents,D/P,TT against B/L draft before shipment,100% TT in advance

Average lead Time:
10

Total Annual Revenue:
$1 million-$2.5 million

Total Employees:
11-50

Year of Establishment:
2017

, Manufacturing and Preparation of Chemical Product. We have a strong R & D and production capacity, mainly engaged in the manufacture and sales of agricultural, industrial and life related chemicals. Leading part of Europe, Russia and North America.

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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Food Grade L-Cysteine Nutritional Supplement Food Grade Amino Acid CAS 52-90-4

Product Description

Seller Information