Chitosan-36 AS

Chitosan-36 AS: Extra-Pure Acid-Soluble Chitosan with High Zeta Potential

Chitosan-36 AS is an extra-pure, acid-soluble chitosan engineered for applications where controlled surface charge, dispersion stability, and reliable batch quality matter more than raw solubility speed. With a documented zeta potential of +36 mV and a purity of 98.70%, this mushroom-derived, shellfish-free grade is built for formulators working in binding, coating, and dispersion systems where cationic charge behavior must be predictable.

Supplied as a free-flowing, off-white to cream powder and sold by the kilogram, Chitosan-36 AS is available in two selectable sources mushroom (fungal) or insect so procurement teams can match the biological origin to their labeling, allergen, and sustainability requirements without changing the functional grade.

What the “36” in Chitosan-36 AS 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. In practical formulation terms, a zeta potential in this range indicates a strongly positively charged polymer surface under typical test conditions — the property that governs how chitosan particles interact with negatively charged surfaces, suspended solids, and anionic ingredients.

For formulators, that translates into three working advantages:

• Controlled interaction — predictable electrostatic binding toward anionic surfaces and molecules, useful in coating and adsorption-type systems
• Dispersion stability — charge-assisted stabilization of suspensions, reducing uncontrolled agglomeration
• Low-to-moderate charge strength by design — a grade positioned for systems that need dependable cationic behavior rather than maximum charge density

Acid-Soluble vs. Water-Soluble Chitosan: Where Chitosan-36 AS Fits

Chitosan-36 AS is an acid-soluble chitosan, not a directly water-soluble salt. In native (free-base) form, chitosan’s amine groups are only protonated — and the polymer dissolved — under acidic conditions. This is the classic, most widely used chitosan format worldwide, and it remains the correct choice whenever the formulation already tolerates a mildly acidic preparation step.

The documented laboratory dissolution method is straightforward: approximately 1 mL of acetic acid in 99 mL of deionized water, with the powder stirred for 1–2 hours at room temperature — no heating required. Complete solubility is confirmed per batch against this method.

If your process cannot accommodate an acid-dissolution stage, a pre-converted water-soluble chitosan hydrochloride salt is the appropriate alternative format. But when the application benefits from a lower-cost native-format polymer with a documented, tightly specified surface charge, acid-soluble Chitosan-36 AS is the technically economical selection.

Two Selectable Sources: Mushroom or Insect

Chitosan-36 AS is offered with a source selection at order time:

• Mushroom (fungal) source — suitable for non-animal and vegan-preferred formulations; the documented mushroom batch carries a Lenzites betulina fungal source on its Certificate of Analysis
• Insect source — provides reliable molecular integrity and functional performance from a renewable, non-marine biomass stream

Both sources supply the same functional acid-soluble grade, so reformulation between sources is minimal the selection is driven by labeling strategy, allergen policy, and sourcing preferences rather than processing changes.

Applications and Use Context

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

• Binding and film-forming systems where a cationic polymer must anchor to anionic substrates
• Coating and dispersion applications that rely on charge-assisted stabilization
• 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
• Liquid formulations where consistent batch-to-batch charge behavior simplifies scale-up

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

Documentation, Traceability, and Quality

Every aspect of this grade is documented per batch rather than claimed generically. The current production batch (PRM/CHT-AS/01/01-2026, manufactured January 2026) ships with full traceability covering purity, acid solubility, zeta potential, molecular weight, pH, viscosity, heavy metals, 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 in pharmaceutical and biomedical systems 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 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 AS is the right fit for your system.