Chitosan Oligosaccharide Hydrochloride (Chitosan IG)

Chitosan Oligosaccharide Hydrochloride — Industrial Grade Bulk Supplier

CAS 70694-72-3 | +70 mV Zeta Potential | <3,000 Da | Mushroom & Insect Sources | COA Available

Chitosan Oligosaccharide Hydrochloride (Industrial Grade) is a water-soluble, low molecular weight cationic biopolymer engineered for demanding industrial formulation environments. With a zeta potential of approximately +70 mV and a molecular weight below 3,000 Da, this material delivers measurable electrostatic performance in water treatment, industrial coatings, surface modification, and chemical processing systems. Available in mushroom-derived and insect-derived variants, each batch ships with a full Certificate of Analysis (COA) and Material Safety Data Sheet (MSDS). Samples start at 25 g ($60); industrial bulk pricing available on request.

What Is Chitosan Oligosaccharide Hydrochloride — and Why Does the Grade Matter?

Chitosan Oligosaccharide Hydrochloride (COS-HCl) is produced by controlled enzymatic or chemical hydrolysis of native chitosan, followed by salt formation with hydrochloric acid. The result is a short-chain, cationic polysaccharide that dissolves directly in water at neutral pH eliminating the acidic pre-treatment required by standard chitosan.

For industrial buyers, grade matters because:

• Food-grade COS targets supplement and nutraceutical compliance wrong specification for process chemistry.
• Agricultural-grade COS is optimized for foliar uptake, not aqueous industrial dispersion.
• Industrial-grade COS-HCl is formulated for high-load aqueous systems, stable electrostatic performance, and bulk processing the specification on this page.

Learn more about how grades differ: Types of Chitosan Full Grade Comparison

How the +70 mV Zeta Potential Works in Industrial Systems

Zeta potential measures the electrostatic charge on a particle surface in solution. At +70 mV, Chitosan Oligosaccharide Hydrochloride carries a strong positive charge that drives three critical industrial mechanisms:

• Flocculation: The positive charge electrostatically attracts negatively charged suspended solids, colloidal particles, and organic contaminants, causing them to aggregate and settle out of solution. This is why COS-HCl outperforms neutral polymers in wastewater treatment.
• Surface Adsorption: The cationic polymer adsorbs tightly onto negatively charged substrates (most industrial surfaces carry a slight negative charge). This creates strong coating adhesion without the need for synthetic adhesion promoters.
• Dispersion Stability: In aqueous formulations, the charge repulsion between COS-HCl-coated particles prevents reaggregation, maintaining homogeneous dispersions over time.

A +70 mV value places this material in the ‘excellent stability’ band above the ±30 mV threshold where most polymers begin to destabilize. This makes it reliable across variable pH and temperature conditions common in industrial processing.

See how this applies in water treatment: Chitosan for Water Treatment — Applications & Dosage

Technical Specifications

Mushroom Source vs. Insect Source — Which Is Right for Your Process?

Most suppliers offer a single source. We offer both because the difference matters to procurement teams, sustainability officers, and formulation chemists.

Learn about our sourcing: Insect-Origin Chitosan |

Vegetal/Mushroom-Origin Chitosan

Industrial Applications — Where COS-HCl Delivers Results

1. Water Treatment & Effluent Management

Chitosan Oligosaccharide Hydrochloride is one of the most effective bio-based flocculants available for industrial and municipal water treatment. Its cationic charge interacts with negatively charged suspended solids, colloidal particles, heavy metals, and synthetic dyes, causing rapid aggregation and sedimentation.

Typical loading rates: 5–50 mg/L depending on turbidity, organic load, and target contaminant. In dye-laden textile effluent, COS-HCl has demonstrated >85% color removal in controlled studies at optimal pH (6.0–7.5).

Applications:

• Removal of suspended solids and colloidal turbidity
• Reduction of BOD/COD in industrial discharge
• Dye and pigment adsorption from textile wastewater
• Heavy metal chelation (Cu²⁺, Pb²⁺, Cd²⁺) at adjusted pH
• Eco-label compliant flocculant for green procurement

Related: Sustainable Water Treatment with Chitosan — Full Guide

2. Industrial Coatings & Surface Modification

The film-forming and adsorption properties of COS-HCl make it a functional additive in water-based coating systems. At recommended concentrations (0.5–3% w/w), it improves adhesion to negatively charged substrates, adds a degree of antimicrobial barrier performance, and enhances coating uniformity.

Applications:

• Water-based coating systems requiring improved adhesion
• Antimicrobial functional coatings for industrial surfaces
• Surface priming and functionalization before lamination
• Film-forming layer in biodegradable packaging systems

3. Chemical Formulations & Dispersant Systems

In complex aqueous formulations, COS-HCl functions as a dispersion stabilizer, preventing particle agglomeration and extending shelf life. Its compatibility across a neutral-to-slightly-acidic pH range makes it a drop-in functional additive for many existing formulation processes.

• Dispersion stabilizer for pigment and particle suspensions
• Binding agent in adhesive and composite formulations
• Compatibility enhancer in multi-component aqueous systems

4. Biodegradable Polymer & Material Engineering

As sustainability pressures drive the shift away from persistent synthetic polymers, COS-HCl is increasingly used in PLA bioplastic systems and biodegradable film development. Its low molecular weight allows uniform integration without compromising mechanical properties.

• Biodegradable film and coating development
• Composite reinforcement in eco-material systems
• Functional additive in sustainable packaging R&D

COS-HCl vs. Synthetic Cationic Polymers — A Practical Comparison

Pricing, Packaging & Shipping

All pricing listed is for sample (25 g) and standard (1 kg) sizes. Industrial bulk orders above 1 kg are quoted separately based on volume, specification, and destination.

For non-US destinations or bulk orders, contact: steve@chitosanglobal.com | +1 423-202-6145

View all wholesale pricing: Wholesale Pricing Page

Why Source from Chitosan Global?

• Dual sourcing: mushroom AND insect origin — rare among Western suppliers
• Documentation ready: COA, MSDS, and TDS available per batch
• Consistent specifications: DDA ≥ 95%, MW < 3,000 Da, Zeta +70 mV
• Export-ready: ships globally from India with USA-free delivery option
• Industrial and R&D quantities: 25 g samples through full bulk supply
• Direct technical support: speak with Steve Nice at 423-202-6145

About our supply chain: Responsible Supply Chain Policy

Frequently Asked Questions

What is chitosan oligosaccharide hydrochloride used for in industry?

It is used as a water-soluble cationic polymer in water treatment flocculation, industrial coating adhesion, chemical dispersion stabilization, and biodegradable material development. Its +70 mV zeta potential makes it especially effective in systems requiring strong electrostatic interaction.

What is the CAS number for chitosan oligosaccharide hydrochloride?

The CAS number is 70694-72-3. This identifies the hydrochloride salt form of low molecular weight chitosan oligosaccharide.

Is this product fully water-soluble?

Yes. Unlike standard chitosan which requires acidic conditions (pH < 6) for solubility, Chitosan Oligosaccharide Hydrochloride dissolves completely in deionized water at neutral pH. This makes it directly usable in most aqueous industrial formulations without pH adjustment.

What is the molecular weight range?

This product has a molecular weight below 3,000 Da (< 3,000 Da), placing it in the low molecular weight oligosaccharide range. This enables faster dispersion, deeper substrate penetration, and improved flocculation kinetics compared to higher MW chitosan.

Can it replace synthetic cationic polymers like PAC or polyacrylamide?

In many applications, yes. COS-HCl provides comparable flocculation and binding performance with significantly better biodegradability and environmental profile. It is increasingly used as a bio-based alternative in green-procurement-driven industries. Application-specific trials are recommended to validate dosage and performance in your system.

What is the difference between mushroom and insect source?

Mushroom-derived COS-HCl is produced from fungal mycelium and contains no animal inputs, making it suitable for vegan-compatible and non-shellfish formulations. Insect-derived COS-HCl (from Black Soldier Fly) offers reliable molecular consistency and is suited for standard industrial applications. Both meet the same technical specification.

Is a Certificate of Analysis (COA) available?

Yes. A COA is provided for every batch. MSDS and TDS are also available. Download links are on the product page, or request directly at steve@chitosanglobal.com.

What quantities are available?

We supply 25 g samples for R&D evaluation, 1 kg standard units, and bulk industrial quantities. Bulk pricing and custom packaging are available — contact us for a quote.

Related Products & Resources

→ Chitosan Hydrochloride (Standard Grade) — higher MW chitosan HCl for film and fiber applications

→ Chitosan Oligosaccharide (COS) — All Grades — food, agricultural, and industrial COS comparison

→ Carboxymethyl Chitosan — anionic derivative for different charge-interaction requirements

→ Quaternary Chitosan — permanently cationic chitosan for antimicrobial and fiber applications

→ Chitosan for Water Treatment — Application Guide

→ Shop All Chitosan Products

Ready to Order or Request a Sample?

Select your source (Mushroom or Insect) and quantity above, or contact us for bulk pricing, technical documentation, or formulation support.

Email: steve@chitosanglobal.com

Phone: +1 423-202-6145

Contact Us for Custom Quote |

Download COA (.docx) |

Download MSDS (.docx)