Chitosan-36 WS

Chitosan-36 WS: Extra-Pure Water-Soluble Chitosan with +36 mV Zeta Potential

Chitosan-36 WS is an extra-pure, water-soluble chitosan engineered for formulators who need immediate aqueous solubility and a documented, repeatable surface charge. With a batch-documented zeta potential of +36 mV, a low molecular weight of approximately 45 kDa, and a purity held to a 98.0–99.5% specification, this mushroom-derived, vegan, shellfish-free grade is built for liquid formulations, coatings, and solution-based processing with no acid-activation step required.

Like its counterpart grades, Chitosan-36 WS is offered in two selectable sources mushroom (fungal) or insect so procurement teams can align biological origin with labeling, allergen, and sustainability requirements while keeping the functional grade unchanged.

What the “36” in Chitosan-36 WS Means: Zeta Potential in Practice

The defining specification of this grade is its cationic surface charge. The current batch documents a zeta potential of +36 mV, within a specification window of +30 to +40 mV measured by an aqueous dispersion/solution method. In formulation terms, a zeta potential in this range indicates a strongly positively charged polymer surface the property that governs how chitosan interacts with negatively charged surfaces, suspended particles, and anionic ingredients.

For formulators, that translates into three working advantages:

• Balanced interaction — predictable electrostatic binding toward anionic substrates, useful in binding, dispersion, and surface-treatment systems
• Charge-assisted stability — supports uniform dispersion and suspension stability in aqueous systems
• Low-to-moderate charge strength by design — a grade positioned for dependable cationic behavior rather than maximum charge density

Water-Soluble Format: Dissolves Directly — No Acid Step

Chitosan-36 WS is fully water-soluble: the documented laboratory method is simply 1 g of powder in 99 mL of deionized water with magnetic stirring for 1–2 hours at room temperature — no acid, no heating. Complete solubility is confirmed per batch, and the grade sits at the low end of the molecular-weight range (approximately 45 kDa), which supports faster hydration and a manageable solution viscosity (20–100 cps for a 1% solution at 30°C; the documented batch measures 60 cps).

This is the practical difference from native-format, acid-soluble chitosan, which requires an acetic-acid dissolution stage before use. If your process already tolerates acidic preparation, the acid-soluble sibling of this grade, Chitosan-36 AS, serves the same charge family in native format; when immediate aqueous solubility matters more, Chitosan-36 WS removes that preparation step entirely.

Two Selectable Sources: Mushroom or Insect

Chitosan-36 WS is offered with a source selection at order time, both produced under the green process route reflected in the Chitosan Global catalog:

• Mushroom (fungal) source — suitable for non-animal and vegan-preferred formulations; the supplied COA identifies Lenzites betulina as the raw-material source
• Insect source — provides dependable molecular structure and performance from a renewable, non-marine biomass stream

Both sources supply the same functional water-soluble grade, so the selection is driven by labeling strategy, allergen policy, and sourcing goals rather than processing changes.

Applications and Use Context

Chitosan-36 WS performs effectively in binding, dispersion, and surface-treatment systems, and is suitable for liquid formulations, coatings, and solution-based processing. Typical evaluation areas include:

• Liquid formulations where immediate aqueous solubility simplifies raw-material preparation
• Coating and surface-treatment systems that rely on predictable cationic charge behavior
• Agricultural and crop-care formulations — chitosan is widely studied as a plant-defense elicitor and coating polymer; see our guide on Chitosan for Plant Defense and Crop Protection Systems and the broader agriculture resource hub

For the full range of end uses across food, agriculture, pharma, cosmetics, and industrial processing, explore the applications overview.

Documentation, Traceability, and Quality

Every batch of Chitosan-36 WS is documented rather than claimed generically: the released specification covers appearance, water solubility, zeta potential, molecular weight, purity, pH, viscosity, heavy metals (NMT 10 ppm as Pb; the documented batch measures 1 ppm), and soluble fraction. Supporting documents are available directly:

• Download the current Certificate of Analysis (COA)
• Download the Material Safety Data Sheet (MSDS)

Peer-reviewed literature on chitosan’s stability and polymer behavior provides useful technical context for qualification work — see the published review on the stability of chitosan in pharmaceutical and biomedical applications.

Ordering: 1 kg Standard Pack, Bulk by Quote

The listed price applies to a 1 kg pack, shipped from India (the USA 1 kg total includes product price, import tariff, and approximately $50 shipping). Orders above 1 kg require a separate product and shipping quotation — please contact us for a custom shipping quote, stating quantity, destination, and any specification or documentation requirements.

Why Choose Chitosan Global?

Chitosan Global is a specialized chitosan derivatives supplier working across mushroom, insect, and shellfish origins matching formulators, laboratories, and manufacturers to the right grade by functional requirement rather than product name alone. Every lot ships with batch-specific documentation, and our technical team supports specification questions from sample scale through commercial volumes. Contact Chitosan Global to discuss whether Chitosan-36 WS is the right fit for your system.