Description
What Is Chitosan Hydrochloride (Shellfish)?
Chitosan Hydrochloride (Chitosan HCl) is the hydrochloride salt form of chitosan, developed to overcome one of the main practical limitations of native chitosan: limited solubility in neutral aqueous systems.
Our Shellfish Chitosan Hydrochloride is produced from chitosan derived from shrimp and crab shell chitin and converted to the HCl salt form under controlled processing conditions. The resulting material is designed for easier incorporation into aqueous formulations used across pharmaceutical research, cosmetics, food technology, agriculture, water treatment, and other technical applications.
Current core specifications include:
- CAS No.: 70694-72-3
- Source: Shellfish — shrimp & crab
- Degree of Deacetylation (DDA): ≥85%
- Molecular Weight: 50,000–100,000 Da
- Appearance: Off-white to cream powder
- COA: Available for product evaluation and ordering
For a broader technical explanation of the material, visit our Shellfish Chitosan Hydrochloride pillar guide.
Need to evaluate the material now? Review the available product options above, request a laboratory sample, or contact our team for technical documentation and bulk requirements.
Why Choose Chitosan Hydrochloride Instead of Native Chitosan?
For many formulators, the most important difference is aqueous processability.
Native chitosan normally requires acidic conditions for effective dissolution. That can create additional formulation steps when the final system is intended to operate closer to neutral pH.
Chitosan Hydrochloride is supplied as a salt form that is considerably easier to disperse and dissolve in water, making it attractive when formulators need a more convenient chitosan format for aqueous processing.
This can be particularly useful when working with:
- Liquid formulations
- Aqueous pharmaceutical research systems
- Cosmetic emulsions and serums
- Coatings and films
- Agricultural spray systems
- Water-treatment formulations
However, Chitosan HCl is not automatically the better material for every application. Final selection should consider molecular weight, DDA, viscosity, concentration, pH, and the other ingredients in the formulation.
For a detailed technical comparison, see Chitosan Hydrochloride vs Native Chitosan.
For deeper information specifically about aqueous formulation behavior, visit Water-Soluble Shellfish Chitosan.
Technical Specifications
| Parameter | Specification |
|---|---|
| Product Name | Chitosan Hydrochloride (Chitosan HCl) |
| CAS Number | 70694-72-3 |
| Source | Shellfish — Shrimp & Crab |
| Molecular Weight | 50,000–100,000 Da |
| Degree of Deacetylation (DDA) | ≥85% |
| Viscosity (1% solution, 25°C) | Grade/product dependent |
| Solubility | Water-soluble Chitosan HCl form |
| Appearance | Off-white to cream fine powder |
| Moisture | Refer to current batch COA |
| Ash | Refer to current batch COA |
| pH (aqueous solution) | Refer to current specification / COA |
| Available Applications/Grades | Food, Pharmaceutical Research, Cosmetic, Agricultural & Industrial options where applicable |
| COA Available | Yes |
| SDS / MSDS Available | Available on request |
Why Molecular Weight and Viscosity Matter
Two Chitosan Hydrochloride grades can behave differently even when they share the same chemical name.
Lower molecular weight / lower viscosity materials may be easier to process where lower solution viscosity or smaller polymer chains are required.
Higher molecular weight / higher viscosity materials may be more appropriate where film formation, polymer structure, or viscosity is important.
Selection should always be based on the specific formulation rather than assuming that one molecular-weight range is universally superior.
If your project requires a particular molecular weight, DDA, or viscosity range, contact our technical team before ordering.
Request / Review the Certificate of Analysis (COA)
Key Functional Characteristics
Water-Soluble Form for Easier Aqueous Processing
The main practical advantage of Chitosan Hydrochloride is improved aqueous handling compared with native chitosan.
This can simplify formulation where repeated acidification of native chitosan would otherwise be inconvenient.
Actual dissolution and solution behavior can still depend on:
- Polymer concentration
- Molecular weight
- DDA
- Viscosity
- pH
- Ionic strength
- Other formulation ingredients
For a deeper formulation-focused discussion, see Water-Soluble Shellfish Chitosan.
Cationic Polymer Behavior
Chitosan contains amino groups that can become positively charged in solution. This cationic behavior contributes to many of the interactions studied across drug-delivery, coating, flocculation, adsorption, and biomaterial systems.
The strength and practical consequences of these interactions depend on the grade and formulation environment.
Mucoadhesive Research Interest
Chitosan and its salts are widely investigated for interactions with negatively charged mucosal surfaces. This is one reason water-soluble chitosan forms continue to receive attention in oral, nasal, buccal, ocular, and other drug-delivery research.
For the full research discussion, visit Chitosan Hydrochloride for Drug Delivery.
Film and Polymer-Network Formation
Depending on grade and formulation conditions, chitosan-based polymers can be incorporated into films, coatings, gels, particles, and related polymer systems.
Performance should be validated experimentally for the intended formulation.
Biopolymer Origin
Chitosan is produced from chitin, a naturally occurring polysaccharide. This product uses shellfish-derived chitosan as its starting material.
Where biodegradability, environmental fate, or biological compatibility is important to a regulated application, buyers should evaluate the relevant grade-specific data rather than relying only on general chitosan literature.
Where Is Shellfish Chitosan Hydrochloride Used?
The advantage of Chitosan HCl is not tied to one industry. Its practical value comes from combining chitosan’s functional polymer characteristics with easier aqueous processing.
Pharmaceutical & Drug-Delivery Research
Chitosan Hydrochloride is investigated in pharmaceutical formulation research because of properties such as:
- Aqueous processability
- Cationic polymer behavior
- Mucoadhesion
- Particle and polymer-network formation
- Controlled-release research
- Interaction with biological surfaces
Research includes oral, nasal, buccal, ocular, nanoparticle, microparticle, hydrogel, and related delivery systems.
Rather than reproducing the research here, see our dedicated article:
Chitosan Hydrochloride for Drug Delivery
Cosmetics & Personal Care
Water-soluble chitosan forms are investigated and used in cosmetic formulation for applications involving:
- Film formation
- Hair conditioning
- Surface substantivity
- Moisture-management systems
- Polymer-based skin and hair formulations
Actual inclusion level, compatibility, and performance should be confirmed in the final cosmetic formulation.
Food & Formulation Research
Chitosan has a significant research history in:
- Edible films
- Coatings
- Packaging systems
- Food-preservation research
- Functional ingredient delivery
The suitability of a specific Shellfish Chitosan Hydrochloride grade for food use depends on the product specification, regulatory requirements, and intended market.
Do not assume that every technical Chitosan HCl grade is interchangeable with a food-use grade.
Agriculture
Chitosan-based materials are researched and used in agricultural technologies including:
- Foliar formulations
- Seed treatments
- Coatings
- Plant-defense research
- Post-harvest systems
A water-soluble form can simplify preparation where direct aqueous application is desirable.
The correct material and concentration should be selected according to the crop, formulation, and intended use.
Water Treatment & Industrial Systems
The cationic nature of chitosan-based polymers has led to extensive investigation in water and wastewater technologies involving:
- Coagulation and flocculation
- Suspended-particle removal
- Dye-treatment research
- Metal-ion interaction
- Sludge conditioning
- Industrial wastewater systems
Performance depends strongly on water chemistry, contaminant type, dose, polymer characteristics, and process conditions.
For detailed environmental research, visit Chitosan Hydrochloride for Water Treatment.
How Chitosan Hydrochloride Is Produced
Shellfish-derived chitosan begins with chitin-containing crustacean material.
At a high level, production involves:
Shellfish chitin → Chitosan → Controlled hydrochloride conversion → Purification → Drying / powder processing → Quality characterization
The final characteristics of the product can depend on both the starting chitosan and the conversion process.
Important variables can include:
- DDA
- Molecular weight
- Viscosity
- Purity
- Moisture
- Particle characteristics
- Batch consistency
For the technical process explanation, read How Chitosan Hydrochloride Is Manufactured.
What Should You Check Before Buying Chitosan Hydrochloride?
Do not select a Chitosan HCl product based only on the product name.
Before purchasing, evaluate:
| What to Check | Why It Matters |
|---|---|
| Source / Origin | Determines whether shellfish, fungal, or other origin requirements are met |
| DDA | Influences polymer charge and material behavior |
| Molecular Weight | Affects viscosity and formulation behavior |
| Viscosity | Important for processing, coatings, gels, and liquid systems |
| Solubility | Should match the intended formulation environment |
| Purity / COA | Helps confirm batch specifications |
| Required Grade | Application and regulatory requirements differ |
| Quantity | Laboratory testing and production-scale purchasing require different pathways |
If your primary concern is sourcing reliability, documentation, and commercial supply, see our Shellfish Chitosan Hydrochloride Supplier guide.
If you are ready to purchase, visit Buy Shellfish Chitosan Hydrochloride for the purchasing pathway, or use the product options above.
Shellfish vs Other Chitosan Hydrochloride Origins
Chitosan Hydrochloride can also be sourced from other biological origins.
Shellfish Chitosan HCl
A well-established commercial source based on shrimp/crab-derived chitin.
Mushroom Chitosan HCl
A fungal-origin alternative for projects where a non-shellfish source is preferred.
Explore Mushroom Chitosan Hydrochloride.
Black Soldier Fly Chitosan HCl
An insect-derived alternative being developed for specialized biomaterial and industrial applications.
Explore Black Soldier Fly Chitosan Hydrochloride.
Do not select an origin based solely on marketing labels. Compare the actual specification, application requirements, documentation, supply requirements, and regulatory considerations.
Pricing, Samples & Bulk Orders
Current pricing and available package options can change, so use the product selector above as the source of truth for current purchase options.
Depending on the order type, buyers can:
- Evaluate a laboratory sample
- Review available product specifications
- Request the COA
- Purchase standard quantities
- Request pricing for larger commercial requirements
For a complete purchasing guide, visit:
Buy Shellfish Chitosan Hydrochloride
For procurement and supplier-evaluation information:
Shellfish Chitosan Hydrochloride Supplier
For larger requirements, contact our team with:
- Intended application
- Required specification
- Quantity
- Destination
- Documentation requirements
This allows us to provide a more relevant quotation.
Why Source Through Chitosan Global?
Our goal is to make technical evaluation easier before a buyer commits to commercial quantities.
Depending on the product and order, buyers can request:
- Product specifications
- Certificate of Analysis
- SDS / MSDS
- Laboratory sample
- Technical discussion
- Bulk quotation
If you are uncertain whether Shellfish Chitosan HCl, Mushroom Chitosan HCl, or another chitosan form is appropriate, contact our technical team before ordering.
The objective is to help you select the correct material for your formulation rather than simply sell the highest-priced option.
Related Products
Depending on your technical requirements, you may also want to evaluate:
- Native Shellfish Chitosan — traditional acid-soluble shellfish chitosan
- Chitosan Hydrochloride — Mushroom Origin — fungal-origin Chitosan HCl
- Chitosan Hydrochloride — Black Soldier Fly — insect-derived Chitosan HCl
- Chitosan Oligosaccharide — Shellfish — lower-molecular-weight water-soluble chitosan format
- Carboxymethyl Chitosan — Shellfish — chemically modified water-soluble derivative
- Quaternary Chitosan — Shellfish — permanently quaternized cationic derivative
Choose between these materials based on the required polymer chemistry, molecular weight, charge characteristics, solubility, viscosity, and intended application.
Frequently Asked Questions
What is Shellfish Chitosan Hydrochloride?
It is the hydrochloride salt form of chitosan produced from shellfish-derived chitin. Compared with native chitosan, the HCl form provides easier aqueous processing and is used or investigated across a wide range of formulation and industrial systems.
Is Chitosan Hydrochloride the same as Native Chitosan?
No. They share the chitosan polymer backbone, but the hydrochloride salt form behaves differently in aqueous systems. See our detailed Chitosan Hydrochloride vs Native Chitosan comparison.
Is Shellfish Chitosan Hydrochloride water soluble?
Chitosan HCl is specifically used as a water-soluble chitosan salt form. Actual solution behavior can still depend on concentration, molecular weight, viscosity, pH, and formulation composition.
Read Water-Soluble Shellfish Chitosan for the technical explanation.
What is the DDA of this product?
The current Shellfish Chitosan Hydrochloride specification lists a DDA of ≥85%. For batch-specific confirmation, review the relevant COA before commercial use.
What is the molecular weight?
The current product specification lists a molecular-weight range of 50,000–100,000 Da. If your application requires a narrower range, contact the technical team before ordering.
Can I request a sample before a bulk order?
Laboratory evaluation options are available through the current product purchasing pathway. Check the product options above or visit Buy Shellfish Chitosan Hydrochloride.
Is a COA available?
Yes. Technical documentation including a Certificate of Analysis can be requested for product evaluation. Use the current batch documentation when making specification or regulatory decisions.
How do I choose between Shellfish, Mushroom, and BSF Chitosan HCl?
Start with the actual application requirements: origin preference, specification, molecular weight, DDA, viscosity, regulatory considerations, quantity, documentation, and price. Contact our technical team if you need help comparing available origins.
Ready to Evaluate Shellfish Chitosan Hydrochloride?
Choose the next step that fits your project:
- Review the product options above
- Request a laboratory sample
- Request the COA
- Learn more about Shellfish Chitosan Hydrochloride
- Review sourcing information
- See the purchasing guide
- Contact the technical team for specifications or bulk requirements
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