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L-Cysteine Hcl Monohydrate| CAS 7048-04-6 | E920 | Amino Acid for Food, Pharmaceutical and Cosmetic Use buy - image1

L-Cysteine Hcl Monohydrate| CAS 7048-04-6 | E920 | Amino Acid for Food, Pharmaceutical and Cosmetic Use

Name: L-Cysteine Hcl Monohydrate| CAS 7048-04-6 | E920 | Amino Acid for Food, Pharmaceutical and Cosmetic Use
Brand: PREMIUM INGREDIENT
SKU: pr2610141158
Price: 4 USD
Availability: InStock

TDS 9 Inquiries

Unit Price:

$4-5.2/KG FOB

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CAS No.:

7048-04-6

Grade:

USP/AJI/FCC/EP grade

Content:

99%

Port:

shanghai

Brand:

PREMIUM INGREDIENT

Packaging:

25kg/Cardboard Drum

Sample Available:

Yes

Price valid (until):

2026-11-14

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PREMIUM INGREDIENT CO.,LTD

Company Type:

Manufactory

Location:

United Kingdom

Payment Terms:

TT against copy of documents,L/C

Average Lead Time:

80 days

Qualification:

Main Products:

l-lysine monohydrochloride,dl-methionine,n-acetyl-l-cysteine,l-methionine,glycine,l-cysteine hcl monohydrate

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Product Details
Seller Information
Inquiry History

Description

Basic Information

Item	L-Cysteine HCl Monohydrate
Product Name	L-Cysteine Hydrochloride Monohydrate
CAS No.	7048-04-6
E Number	E920
Other Name	L-Cys HCl Monohydrate
Grade	Food Grade,
Purity	≥98.5%
molecular formula	C₃H₇NO₂S·HCl·H₂O
implementation standard	AJI/USP/EP/CP
Solubility	Highly soluble in water
Storage	Cool, dry, sealed, protected from moisture

Product Overview

L-Cysteine Hydrochloride is a sulfur-containing L-form protein amino acid with strong reducing properties, acting as a precursor for glutathione and delivering antioxidant functions. It is widely applied across food, pharmaceutical and cosmetic industries. In food production, it serves as E920 dough conditioner to improve dough extensibility and baked goods texture, while also working as antioxidant and flavor precursor for savory food formulations. For pharmaceutical industry, it acts as a key raw material for drug preparations. In cosmetic field, it functions on keratin structure for hair and skincare formulations. It is available in two forms: l-cysteine hydrochloride monohydrate (CAS 7048-04-6) and l-cysteine hydrochloride anhydrous (CAS 52-89-1).

L-Cysteine HCl Monohydrate, Cas No.: 7048-04-6, Molecular Formula: C₃H₇NO₂S·HCl.H2O, The content of moisture is 8.5%-12.0%. is widely preferred for general food and cosmetic formulations. It is the key raw material for synthesizing N-Acetyl-L-Cysteine (NAC). In food systems, it works as a flavor enhancer.

Key Characteristics

Feature	Monohydrate
Water content	8.5%-12.0%
Solubility	Highly soluble in water
Core strength	Raw material for NAC synthesis; excellent savory flavor enhancer

Main Function

L-Cysteine hcl monohydrate &Anhydrous

1. Acts as dough conditioner, antioxidant and flavor precursor for food production

2.Serves as key amino acid raw material for pharmaceutical formulations

3. Functions as reducing ingredient for cosmetic hair and skincare formulations

L-Cysteine HCl Monohydrate

Synthesis precursor: Major starting raw material for manufacturing N-Acetyl-L-Cysteine (NAC).

Application

Food: Primary application, dough conditioning for bakery, antioxidant and savory flavor generation; Monohydrate is the common choice

Pharmaceutical: Raw material for pharmaceutical intermediates and preparations; Anhydrous is preferred for formulas requiring low moisture

Cosmetic: Functional raw material for hair treatment and skincare cosmetic products; Monohydrate is widely adopted

Packaging and Storage

Item	Detail
Packaging	25 kg fiber drum or paper bag
Storage Condition	Store in cool, dry and well-ventilated area
Handling	Keep container tightly sealed, protected from moisture and direct sunlight
Shelf Life	24 months when properly stored

ECHEMI Editorial Reference

white crystalline powder
L-cysteine hydrochloride hydrate is a hydrate that is the monohydrate form of L-cysteine hydrochloride. It has a role as an EC 4.3.1.3 (histidine ammonia-lyase) inhibitor, a flour treatment agent and a human metabolite. It contains a L-cysteine hydrochloride.

Certificates

Basic Info

Product Name:

L-Cysteine, hydrochloride, monohydrate

Other Name:

L-Cysteine,hydrochloride,hydrate (1:1:1);Cysteine,hydrochloride,monohydrate,L-;L-Cysteine,hydrochloride,monohydrate;Cysteine hydrochloride monohydrate;Cysteine monohydrate hydrochloride;Cysteine hydrochloride

CAS No.:

7048-04-6

Molecular Formula:

C3H7NO2S.ClH.H2O

InChIKeys:

InChIKey=QIJRTFXNRTXDIP-JIZZDEOASA-N

Molecular Weight:

175.63

Exact Mass:

175.007

BRN:

5158059

EC Number:

200-157-7

UNII:

ZT934N0X4W

HScode:

29309013

Categories:

Amino Acids and Derivatives

Characteristics

PSA:

65.3

XLogP3:

0.76610

Appearance:

White Solid

Density:

1.51 g/cm³

Melting Point:

175°C

Boiling Point:

293.9ºC at 760 mmHg

Flash Point:

131.5ºC

Refractive Index:

6 ° (C=8, 1mol/L HCl)

Water Solubility:

H2O: 1 M at 20 °C, clear, colorless

Storage Conditions:

Store at RT.

Vapor Pressure:

<0.1 hPa (20 °C)

See More L-Cysteine, hydrochloride, monohydrate Properties 

Hazard Identification

Classification of the substance or mixture

Skin irritation, Category 2

Eye irritation, Category 2

Specific target organ toxicity â single exposure, Category 3

GHS label elements, including precautionary statements

Precautionary statement(s)
Pictogram(s)
Signal word	Warning
Hazard statement(s)	H315 Causes skin irritation H319 Causes serious eye irritation H335 May cause respiratory irritation
Prevention	P264 Wash ... thoroughly after handling. P280 Wear protective gloves/protective clothing/eye protection/face protection/hearing protection/... P261 Avoid breathing dust/fume/gas/mist/vapours/spray. P271 Use only outdoors or in a well-ventilated area.
Response	P302+P352 IF ON SKIN: Wash with plenty of water/... P321 Specific treatment (see ... on this label). P332+P317 If skin irritation occurs: Get medical help. P362+P364 Take off contaminated clothing and wash it before reuse. P305+P351+P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. P304+P340 IF INHALED: Remove person to fresh air and keep comfortable for breathing. P319 Get medical help if you feel unwell.
Storage	P403+P233 Store in a well-ventilated place. Keep container tightly closed. P405 Store locked up.
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

Store the container tightly closed in a dry, cool and well-ventilated place. Store apart from foodstuff containers or incompatible materials.

See More L-Cysteine, hydrochloride, monohydrate Safety Data Sheet 

Seller Information

Business Type: Manufactory
Main Products: l-lysine monohydrochloride,dl-methionine,n-acetyl-l-cysteine,l-methionine,glycine,l-cysteine hcl monohydrate
Location: dongsheng road
Payment Terms: TT against copy of documents,L/C
Average lead Time: 80 days
Total Annual Revenue: $5 million-$10 million
Total Employees: 5-10
Year of Establishment: 2015

Premium Ingredient specializes in supplying and distributing food & feed amino acids, food additives and functional ingredients for more than a decade.

Our food additives portfolio covers phosphates, acidulants, preservatives, sweeteners, thickeners and leavening agents.

Our functional ingredients include vitamins, mineral products, botanical extracts, nutraceutical ingredients, functional fibers & bulking agents.

We serve over 100 clients across food & beverage, dietary supplement, sports nutrition, personal care, pharmaceutical and animal feed sectors, with products exported to dozens of countries worldwide. All our goods are sourced from top-tier Chinese manufacturers with proven expertise and complete management systems.

◆Amino Acids	◆ phosphates	◆ acidulants
◆ preservatives	◆ sweeteners	◆ functional fiber&bulking agent
◆ thickeners	◆ Leavening agents	◆ mineral products
◆ Botanical extracts	◆ vitamins	◆ nutritional products

Backed by over 10 years of industry experience, we provide one-stop-shop solutions combining high-grade products, prompt communication, on-time delivery and real-time market intelligence. Thanks to our long-term deep-rooted partnerships with source manufacturers, we can guarantee sufficient inventory, stable pricing and fast shipment.

Our third-party certifications include ISO9001, ISO14001, HACCP, HALAL, KOSHER, GMP, FAMI-QS and more. You can count on Premium Ingredient as your trusted global raw material supplier.

------------------------------------- Mission------------------------------------

Acting as a bridge between reliable Chinese manufacturers and global buyers, we carefully select partner factories with mature production capabilities and sound management systems. We deliver not only premium-quality raw materials, but also value-added services including market trend updates, supply chain risk alerts, product formulation consultation, consolidated sample shipment and full document support for import compliance. We timely forward overseas customers’ requirements to our partner factories to support product upgrading and achieve mutual growth.

-------------------------------------Our Quality------------------------------------

Our Quality

As a professional ingredient supplier, we do not operate manufacturing facilities. Instead, we build robust quality‑assurance workflows across our whole supply chain to safeguard consistent product performance for every shipment

Strict Supplier Due‑Diligence

Before entering any partnership, we carry out on-site factory visits and assess industry reputation, followed by multi-stage qualification reviews. We validate production qualifications, export track records, quality management systems and complete certification packages. New suppliers must pass sample evaluation, and only fully vetted top-tier factories are admitted to our approved supplier pool

Batch‑by‑batch Document Verification

For every order, we cross‑check factory‑issued test documents against agreed specifications including FCC, USP, EP, AJI, CP or your customized requirements. We will not forward documents to customers until key indicators are fully aligned with specifications. This step avoids inconsistent or mismatched documentation common in raw‑material trade.

Independent Third‑party Testing Coordination

Upon client request, we can arrange independent laboratory inspections from recognized third‑party institutions. We manage sample delivery, test protocol communication and report follow‑up to support your market compliance needs.

Quality Closure & Continuous Improvement

We keep traceable records for all delivered batches. If any quality concern arises, we act as your single point‑of‑contact to trace root causes with source factories, drive corrective actions and deliver practical resolution plans. Client feedback is systematically collected to optimize our supplier management and document‑review procedures.

We provide a comprehensive set of compliance documents to support your import and registration work. Our available documentation includes but is not limited to:

★ ISO Certification ★ Halal Certificate

★ Kosher Certificate ★ IP certificate

★ Haccp certificate ★ Allergens with Glutens

★ GRAS Statement ★ HACCP Program

★ BSE/TSE Statement ★ Certificate of Analysis

★ Country of Origin Certificate ★ Material Safety Data Sheet

★ Flow Chart (product processing) ★ Food Grade Certificate

★ Nutritional Information ★ GMO Statement

★ Specification Sheet

Inquiry History

9 Inquiries

Country	Product	Purchase Quantity	Date Posted
Brazil	Vegetarian L-Cysteine monohydrate CAS 7048-04-6	25 KG	Mar 31, 2026
Egypt	L-Cysteine hydrochloride monohydrate	1000 KG	Dec 1, 2025
Switzerland	L-Cysteine HCl Monohydrate	1 KG	Aug 29, 2025
Brazil	L-Cysteine HCl Monohydrate	1 MT	Mar 29, 2026
Bangladesh	L-Cysteine HCl Monohydrate	185 KG	Oct 30, 2023
India	L-cysteine hydrochloride	1 KG	Sep 8, 2026
India	L- Cysteine HCl Monohydrate	25.00 KG	Oct 13, 2025
India	L-Cysteine hydrochloride monohydrate	200 KG	Aug 31, 2025
Azerbaijan	L Cysteine Hydrochloride Monohydrate	3 KG	May 24, 2024

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