| HS Code | 159836 |
| Inci Name | Hydroxypropyl Chitosan |
| Appearance | White to pale yellow powder |
| Solubility | Highly soluble in water |
| Molecular Weight | Variable, typically 50,000-400,000 Da |
| Ph Range | 4.5-6.5 (1% aqueous solution) |
| Viscosity | Medium to high, depends on concentration |
| Origin | Derived from chitosan (deacetylated chitin) |
| Biodegradability | Biodegradable |
| Film Forming Ability | Excellent |
| Odor | Odorless or slight odor |
| Purity | Typically above 90% |
| Applications | Cosmetics, pharmaceuticals, personal care |
| Ash Content | ≤ 1.0% |
| Hydroxypropyl Substitution Degree | Typically 20-40% |
| Storage Conditions | Cool, dry place, protected from light |
As an accredited Water-Soluble Hydroxypropyl Chitosan factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | Water-Soluble Hydroxypropyl Chitosan is securely packaged in a 500g sealed, moisture-proof, opaque plastic bottle with detailed labeling. |
| Shipping | Water-Soluble Hydroxypropyl Chitosan is shipped in sealed, moisture-proof containers to ensure product integrity. It is typically packaged in double-layer polyethylene bags within fiber drums or cartons. Transport is conducted at room temperature, away from direct sunlight and incompatible substances, with careful labeling to comply with regulatory shipping standards. |
| Storage | Water-soluble hydroxypropyl chitosan should be stored in a cool, dry, and well-ventilated area, away from direct sunlight, heat sources, and moisture. Keep the container tightly closed and protected from contamination. Avoid exposure to strong oxidizing agents. Properly label the storage container and handle with clean equipment to maintain product stability and prevent degradation. |
Competitive Water-Soluble Hydroxypropyl Chitosan prices that fit your budget—flexible terms and customized quotes for every order.
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Water-Soluble Hydroxypropyl Chitosan doesn’t get the same spotlight as other traditional thickening or film-forming agents, but those who work in chemical manufacturing quickly see its unique profile change the way solutions behave. Years in factory halls and labs have shown us that modifying chitosan with hydroxypropyl groups pulls this natural polysaccharide out of its old limitations. Classic chitosan dissolves only under acidic conditions, where solubility keeps it from working in many hygiene or personal care formulas. Our water-soluble version dissolves cleanly in neutral and slightly alkaline water, expanding its potential far beyond its roots.
Decades ago, most chitosan left our lines destined only for niche products, but the demands of current markets shaped how we produce every batch. From raw shrimp shells sourced with traceable reliability to the final powder-granule or solution forms, every step puts end-use in mind. Clients range from small R&D labs finding greener scaffolds to industrial buyers mixing final coatings for high-performance packaging. Each expects predictable viscosity, stable clarity in solution, and genuine lot-to-lot consistency—exactly what we optimize for with water-soluble hydroxypropyl chitosan.
The hydroxypropyl modification comes with clear technical demands. We offer batches with molecular weights ranging from about 30kDa up to 500kDa, depending on target viscosity and film flexibility. For hair care, low to middle molecular weights run best, producing transparent, quick-drying films that don’t build up. Biomedical research or wound dressings often lean towards higher weights for increased strength and slower degradation. Our team maintains tight control during etherification, keeping the degree of substitution (DS) typically between 0.4 and 1.2. This DS range delivers the best solubility profile without dropping film robustness.
Particle size remains a priority for many customers; we offer mesh sizes suitable for direct hydration or rapid dissolution, with minimal dust and no large clumps. Finished hydroxypropyl chitosan powders pour freely and hydrate without the gel-phase hurdles that bog down older chitosan grades. Each batch meets tight end-point moisture content, rarely peaking above 10%, so shelf stability doesn’t become a concern down the line. Water clarity tests at neutral pH reveal low turbidity, meaning the dissolved product feels and looks right even in transparent gels and sprays.
Few materials travel as well between research settings and big-batch production as hydroxypropyl chitosan. Lab formulations often stress-test the limits of solubility, compatibility, and blend speed. We’ve observed customers in food coatings requiring nothing more than gentle stirring before solution clarity reaches optimal levels. Even in pigmented paints or ink-jet applications where other polymers might scatter light or cause haze, hydroxypropyl chitosan delivers near-invisible support, thanks to careful control over its molecular architecture.
Batch-to-batch variation doesn’t only ruin formulas—it can undermine whole projects. We tighten specifications for viscosity and nitrogen content to help avoid those pitfalls. Our teams track pH and clarity in line to make sure nothing escapes at subpar values, relying on both automated monitors and the sharp eyes of staff trained over years at the same plant. That’s where the experience of making chitosan and its derivatives by the ton pays off; we know the quirks of each production run, adjusting process and drying cycles to deliver a powder or solution with reliable behavior in end-use.
Water-soluble hydroxypropyl chitosan solves headaches for formulators in personal care, textile treatment, biomedical materials, and even in water-based adhesives. Hair gels and sprays appreciate film-forming without flaky residues, while leave-in conditioners and shampoos draw on its ability to deposit a thin, protective barrier. Unlike rigid, sticky conventional polymers, hydroxypropyl chitosan builds flexible, breathable films that don’t suffocate hair or skin. The solubility at near-neutral pH lets formulators skip harsh acids, improving product safety and shelf stability. Transparent solutions in styling products or skin serums make the product itself almost invisible to the eye but noticeable in performance.
Textile finishing uses hydroxypropyl chitosan to add gentle, anti-static coatings or boost printability on delicate fibers. The water solubility makes application easy—no solvent recovery, no pH corrections, just straight addition to the bath. Some of our partners run entire finishing lines without changing their core processes, relying on the smooth integration of our chitosan grades. The compatibility with dyes and fixing agents removes a lot of the old uncertainty with protein-based coatings. Softness doesn’t suffer and finished garments often show improved colorfastness without compromising on skin comfort.
Wound care and biomedical segments see benefit from the biocompatibility of chitosan, but water solubility changes how these materials behave on living tissue. A hydroxypropyl substitution allows direct application to open wounds, burns, or moist surfaces without the irritation linked to low-pH chitosan. In film-forming sprays and hydrogel dressings, doctors and patients want easy application, transparency to monitor healing, and easy removal. The water-soluble form means hospitals and clinics don’t need specialty mixing equipment or aggressive pH control—just mix, dose, and apply. Researchers continue finding ways the material controls bleeding, reduces infection, and even supports slow delivery of drugs from wound sites.
Adhesives and coatings in paper, packaging, and ink sectors use hydroxypropyl chitosan for food-contact safety, antimicrobial behavior, and moisture control. The shift from solvent-based processes to water-based chemistry aligns with both regulatory pressure and environmental goals. By using our water-soluble grade, clients cut solvent use, reduce VOC emissions, and often see smoother coatings at lower application temperatures.
Not every chitosan product gives reliable water solubility or keeps the original biopolymer’s properties intact. The standard chitosan most people know comes as a cloudy, milky solution that works only in acidic environments—usually pH below 6. That’s not a real option for formulations targeting skin, mucosa, or application with sensitive colorants. Poor solubility often causes sedimentation, nozzle clogs, or cloudy gels. Chemical alternatives, such as synthetic polyquaterniums or quaternary ammonium compounds, sometimes match surface charge or conditioning effect, but usually come from petroleum feedstocks and lack natural characteristics.
Carboxymethyl chitosan—another modified version—works in water as well, but it brings a strong negative charge. That change shifts compatibility in cationic blends, leading to precipitation surprises and instability in formulas loaded with electrolytes or certain proteins. In our experience, hydroxypropyl chitosan’s neutral charge and low irritancy keep it stable in tough formulations, allowing wider use with diverse cosmetic actives, dyes, and biological agents. Its natural antimicrobial effect, left intact from the parent chitosan, means product labels highlight both functionality and origin.
We don’t see any major plant-derived polymers—like cellulose derivatives—offering the same combination of film strength, breathability, and antimicrobial behavior in a straightforward, water-soluble form. Modified starches or guar gums thicken, but none deliver the thin, undetectable film or lasting barrier expected in advanced leave-on applications. Fully synthetic options build uniform films and strong fixes, but performance falters on compatibility in “green” cosmetic or biomedical arenas, where inquiry and regulation touch every ingredient.
Every kilo of hydroxypropyl chitosan starts life in controlled conditions where we remove shellfish proteins and allergens. This keeps the base material clean, traceable, and safe for use in skin contact. Nobody wants batch recalls or poor shelf life, so we use consistent purification with a focus on final ash, color, and particle profile, especially for applications facing close scrutiny from regulatory bodies. The hydroxypropylation step follows established, reproducible protocols—every parameter logged, every deviation checked. Our production crews understand that consistency equals peace of mind for clients, especially when an entire year’s worth of formulations rides on a few tons of specialty chemical.
Industrial partners often run pilots before full launch, so we provide sample lots with matching certificates, detailed property sheets, and open technical support. Our application engineers review not just published methods but the actual on-floor reality: line mixing speeds, water quality, local climate, and previous formulation bases. Subtle details like humidity during storage or stir speed during mixing can affect how quickly hydroxypropyl chitosan hydrates and forms the target solution. Through close feedback with customers, changes to process or packaging get reported directly to our factory floor, where production workers and R&D meet every week. This loop lets us catch and correct small shifts before they ever affect an end product.
Every chemical plant veteran knows ingredients sometimes behave badly. Hydroxypropyl chitosan doesn’t get a free pass—there are rare situations where incompatibility with cationic surfactants or high-salt loads creates haze or separation. Through hands-on troubleshooting, we help customers adjust sequence of addition or dilution profile. In most cases, slow addition to water followed by moderate stirring prevents lumps or undissolved agglomerates from forming. Warming the solution to 35–40°C boosts dissolution rate without hurting properties. For highly sensitive color or clear gels, laboratory filtration finishes off any residual haze.
We observe significant seasonal shifts in parameters like ambient humidity and incoming water hardness. To counteract these, QA teams draw samples at each packaging stage and monitor viscosity in real-time. When a batch suffers small deviations, prompt intervention—either by blending or additional drying—locks down the necessary parameters. Customers rapidly notice changes in viscosity or clarity, so proactive communication remains crucial. Our experienced support staff tackle common challenges such as pH drift in solution or interaction with strong oxidizers. Each lesson learned by our engineers gets coded into a wider knowledge base, helping both new and long-term clients keep formulas running as expected.
Packing matters as much as product. Some clients want vacuum-packed aluminum bags to avoid uptakes in shipping; others prefer drums with moisture-proof liners for scale-up trials. Our warehouse teams keep finished goods in cool, dry storage, with routine checks on moisture and caking. This way each bag or drum leaves our facility as easy to work with as it is on the day of manufacture.
Green chemistry and sustainability draw closer attention every year. Hydroxypropyl chitosan doesn’t solve every ecological challenge by itself, but its backbone stays natural and renewable. We keep waste streams low, reuse process solvents, and capture off-gas during etherification steps. End users increasingly value traceable supply chains, so we document backsourcing, production records, and batch histories. Working directly as producers, every improvement gets immediately implemented—bypassing rounds of approval common outside of direct manufacturing.
Big brands and independent developers alike demand speed and flexibility. Our manufacturing schedule adapts for custom DS or molecular weight requests, supporting pilot batches or urgent scale-ups for product launches. Shipping timelines matter, especially when regulations stretch across borders. Our documentation covers regulatory requirements in major markets and tracks parameters like heavy metals, residual proteins, and bioburden according to latest guidelines. These measures reassure customers pushing into EU, US, or Asian compliance.
As direct manufacturers, real feedback reaches us quickly. A change in a haircare blend or biomedical protocol impacts our process, not some distant supplier’s. Maintenance teams monitor reactors for any drift in reaction time, engineers keep adjusting drying and grinding to perfect physical properties, and lab teams validate each production run side by side with reference standards. Conversations with clients, be they multinational corporations or university spinoffs, strengthen processes from the ground up.
Formula tweaks happen on our benches: pH, blending order, dilution rates—there’s rarely a universal answer, but real-world trials get added right back into the batch book and SOPs. We believe that durable chemical products depend on day-to-day flexibility and readiness to learn from outcomes, both good and bad.
As new markets look for transparency and cleaner supply chains, hydroxypropyl chitosan stands out with its unique blend of functionality and natural origin. Real experience in chemical batches, troubleshooting, customer support, and application development gives us confidence in this product line. Whether entering advanced biomedicine, eco-friendly adhesives, or next-generation cosmetics, the assurance comes from knowing every lot gets made, checked, and delivered with a focus on practical performance.
Specialty chemicals demand more than technical properties; they demand dependability and readiness to adjust as applications evolve. By handling every step—from demineralization of raw chitin to controlled hydroxypropylation—we keep the product true to its promise. Water-soluble hydroxypropyl chitosan emerges less as a raw material and more as a trusted tool for tomorrow’s cleaner, safer, and high-performing products, shaped by experience at the manufacturing floor rather than a specification sheet.
