Ingrédient à base d'acides aminés
L-Cysteine Hydrochloride Supplier | Bulk L-Cysteine HCl Powder
L-Cysteine Hydrochloride is a white crystalline ingredient used across food, flavor, nutrition and pharmaceutical applications. Available as anhydrous or monohydrate material, it can be selected according to the required chemical form and product specification.
Formulaires de produits
Anhydrous and Monohydrate L-Cysteine Hydrochloride
The two forms are identified by different CAS numbers, formulas and molecular weights. The required form should be specified when evaluating a formulation or preparing a purchase specification.
Chlorhydrate de L-cystéine anhydre
The anhydrous form contains no crystallization water and is represented by CAS 52-89-1. It is supplied as white crystals or crystalline powder.
Chlorhydrate de L-cystéine monohydraté
The monohydrate form includes one molecule of crystallization water and is represented by CAS 7048-04-6. It has a higher molecular weight than the anhydrous form because of the added water molecule.
Quality Profile
AJI92 Specification & Test Results
The quality profile below follows the supplied Certificate of Analysis for L-Cysteine Hydrochloride Anhydrous tested against AJI92.
Physical & Optical
The certificate reports appearance as white crystals or crystalline powder, specific rotation within the stated AJI92 range, and a clear, colorless solution with 99.02% transmittance.
Purity & Inorganic Limits
The certificate includes assay, heavy metals, iron, arsenic, residue on ignition and loss on drying as part of the analytical profile.
Additional Quality Checks
Other amino acids are evaluated chromatographically, while pH is reported as a defined release parameter for the tested material.
| Test Item | Test Standard | Test Result |
|---|---|---|
| Apparence | White crystals or crystalline powder | Qualifié |
| Specific rotation [α]²⁰ᴰ | +5.6° to +8.9° | +6.0° |
| State of solution (Transmittance) | Clear and colorless; not less than 98.0% | 99.02% |
| Heavy metals (Pb) | Not more than 15 ppm | <15 ppm |
| Résidus d'allumage | Not more than 0.1% | 0.05% |
| Iron (Fe) | Not more than 15 ppm | <15 ppm |
| Perte au séchage | Not more than 1.0% | 0.28% |
| Other amino acids | Chromatographically | Qualifié |
| Arsenic (As₂O₃) | Not more than 1 ppm | <1 ppm |
| Dosage | 98.0 to 102.0% | 99.7% |
| pH | 1.5 to 2.0 | 1.7 |
Applications
L-Cysteine Hydrochloride Applications
L-Cysteine Hydrochloride appears in several ingredient and manufacturing environments. The exact grade and specification depend on the intended use.
Food & Bakery
Food applications include dough-related processing and flour treatment. L-cysteine monohydrochloride is also listed for flavor-related and nutrient supplement functions in U.S. food-use records.
Flavor Ingredients
Its sulfur-containing chemistry makes L-cysteine relevant to heated reaction-flavor systems and savory flavor development.
Dietary Supplement Formulas
It can be incorporated into amino acid formulas and other nutrition products, including powder, capsule and tablet formats where the selected material fits the formulation specification.
Pharmaceutical Uses
Cysteine hydrochloride is also represented in pharmaceutical standards and products, including monohydrate material used in parenteral nutrition products.
Sélection des produits
What to Specify When Sourcing L-Cysteine Hydrochloride
A clear product specification helps align the chemical form with the intended application and quality requirements.
Form & Standard
- Specify anhydrous or monohydrate form.
- State the required CAS number.
- Define the applicable quality or compendial standard.
- Confirm the assay basis used for the finished specification.
Documentation de qualité
- Review the applicable product specification.
- Check batch-level analytical results against the agreed requirements.
- Confirm the documents needed for quality review and receiving.
- Align quantity, packaging and destination before final quotation.
Ordering Process
From Specification to Bulk Order
The purchasing workflow starts with the product form and specification, then moves through documentation and commercial details.
Define the Product
Select anhydrous or monohydrate and identify the required specification.
Review Quality
Compare the applicable specification and batch documentation with your internal quality requirements.
Confirm Quantity
Provide the required order quantity, packaging preference and destination.
Demander un devis
Send the product details so the commercial quotation can be prepared around your specification and shipment requirements.
Documentation
Quality Documents for Product Evaluation
Product documentation supports technical review before an order is finalized.
Certificate of Analysis
Batch-specific analytical results provide the measured quality profile for the material tested.
Product Specification
The specification defines the quality parameters used to evaluate the selected product.
Safety Data
Safety documentation can be reviewed alongside the product specification during technical and purchasing evaluation.
Request L-Cysteine Hydrochloride Pricing & Product Information
Tell us the product form, required quantity and application for your L-Cysteine Hydrochloride requirement.