Foliar Formulations
Low-molecular-weight COS for evaluation in foliar biostimulant formulations intended to support plant response and nutrient utilization.
Learn moreSY-COS
Chitosan Oligosaccharide (Agricultural Grade – SY-COS)
Low-Molecular-Weight, Water-Soluble Chitosan Oligosaccharide for Agricultural Formulations
Chitosan Oligosaccharide (SY-COS) is a high-performance agricultural-grade biopolymer engineered for superior plant absorption and disease resistance enhancement. Produced through precision enzymatic hydrolysis of natural chitosan, this formulation combines optimal molecular size (<1500 Da) and clarity level of 180, ensuring fast solubility and efficient uptake through leaves and roots.
SY-COS is designed for balanced crop nutrition and strong immunity activation, promoting faster root growth, improved chlorophyll formation, and higher crop yield. It functions as a natural biostimulant and pathogen defense booster, compatible with fertilizers, pesticides, and organic soil conditioners.
This grade offers clearer solutions and lower turbidity than standard types, making it ideal for foliar sprays, hydroponic systems, and seed treatments. It replaces harmful chemical growth enhancers with an eco-safe and biodegradable solution that supports sustainable agriculture and food safety.
MOQ: 25 g sample (Free Shipping) | 1 kg (15% tariff + $60 FedEx shipping) | Bulk packs available. For larger orders, contact (steve@chitosanglobal.com)
Synonyms: SY-COS,
Chitosan Oligosaccharide,
Chitosan Oligosaccharide Powder,
Agricultural Grade Chitosan Oligosaccharide,
Agricultural COS,
Low-Molecular-Weight Chitosan Oligosaccharide,
Water-Soluble Chitosan Oligosaccharide,
Chitooligosaccharide,
COS Biostimulant,
Plant-Grade Chitosan Oligosaccharide,
Agricultural Biostimulant COS
- Product identity
- Chitosan oligosaccharide
- Grade/type
- SY-Agriculture
- Appearance
- Light yellow powder
- Odor
- Odorless
- Content/purity
- ≥90%
Properties
| Property | Value | Test method | Note |
|---|---|---|---|
| Product identity | Chitosan oligosaccharide | Supplier identification method | Batch-specific COA |
| Grade/type | SY-Agriculture | Supplier classification | Agricultural grade |
| Appearance | Light yellow powder | Visual inspection | COA result: Pass |
| Odor | Odorless | Organoleptic inspection | COA result: Pass |
| Content/purity | ≥90% | Supplier analytical method | Batch result: 96.15% |
| Average molecular weight | <1500 Da | Supplier molecular-weight method | Batch result: 1220 Da |
| Convertible glucosamine | ≥60% | Supplier analytical method | Batch result: 79.98% |
| Monosaccharide | ≤0.5% | Supplier analytical method | Batch result: 0.1% |
| Degree of deacetylation | ≥85% | Supplier DAC method | Batch result: 90% |
| Moisture | ≤10.0% | Supplier moisture test | Batch result: 5.40% |
| Particle size | 100 mesh | Sieve analysis | Batch result: 100 mesh |
| Ash content | ≤2.0% | Supplier ash test | Batch result: 0.52% |
| Insoluble matter | ≤0.5% | Supplier insoluble-matter test | Batch result: 0.1% |
| pH | 4.5–7.0 | 1% aqueous solution | Batch result: 5.32 |
| Turbidity | ≤200 | Supplier turbidity method | Batch result: 103.3 |
| Solution absorbance | Supplier reference procedure | 1.5 g COS in 50 mL water, tested at 486 nm | Batch result: 0.176 |
| Lead (Pb) | ≤2 mg/kg | Supplier heavy-metal test | Not detected |
| Arsenic (As) | ≤1 mg/kg | Supplier heavy-metal test | Not detected |
| Mercury (Hg) | ≤1 mg/kg | Supplier heavy-metal test | Not detected |
| Batch number | SY2025081502 | Batch traceability record | Current COA batch |
| Production date | August 15, 2025 | Supplier COA | Batch-specific |
| Expiration date | August 14, 2027 | Supplier COA | Subject to recommended storage |
| Quality conclusion | Qualified | Supplier quality review | Batch approved |
Packaging & Quality
| Item | Detail |
|---|---|
| Standard pack size | Standard commercial pack: 1 kg |
| Bulk availability | Bulk commercial quantities are available through a custom quotation. |
| Production-lot quantity | The documented manufacturing-lot quantity is 1500 kg. This is not the retail pack size. |
| Packaging | Supplied in sealed, moisture-resistant packaging suitable for powdered agricultural ingredients |
| Certificate of Analysis | Batch-specific COA available for SY-COS batch SY2025081502. |
| Quality status | The documented batch was inspected and classified as qualified. |
| Purity control | Minimum content specification: 90%; documented result: 96.15%. |
| Heavy-metal control | Lead, arsenic, and mercury were not detected under the supplier’s analytical procedures. |
| Batch traceability | Production date: August 15, 2025; expiration date: August 14, 2027. |
| Manufacturer | Qingdao Yuda Century Economy and Trade Co., Ltd., Qingdao, China |
| Source verification | Biological source and allergen status require separate supplier documentation. |
Product Overview
Chitosan Oligosaccharide Agricultural Grade (SY-COS) | High-Solubility Plant Biostimulant for Foliar Spray, Hydroponics & Crop Immunity
Commercial-Grade Chitosan Oligosaccharide for Faster Plant Uptake, Stronger Immunity and Higher Yield
Agricultural producers and fertilizer companies are under pressure to increase productivity while reducing dependency on harsh chemical inputs.
Common challenges include:
- poor nutrient uptake efficiency
- weak plant immunity
- low foliar absorption from standard products
- reduced yield under environmental stress
- inconsistent performance from low-grade biostimulants
SY-COS (Chitosan Oligosaccharide Agricultural Grade) is a high-performance water-soluble agricultural biopolymer developed for commercial crop production.
It is engineered to provide:
- rapid absorption through leaves and roots
- stronger crop defense activation
- balanced plant nutrition support
- improved chlorophyll development
- enhanced crop yield consistency
This grade is ideal for growers who need stronger performance than standard COS while maintaining better cost efficiency than ultra-premium grades.
What is SY-COS?
SY-COS is a precision hydrolyzed Chitosan Oligosaccharide produced from natural chitosan using controlled enzymatic processing.
This creates a product with:
- Low molecular weight (<1500 Da)
- Improved solution clarity (180)
- Fast solubility in water
- High biological activity in plant systems
- Stable batch-to-batch consistency
Unlike regular chitosan powders, SY-COS is optimized for modern agriculture systems, especially foliar spray, hydroponics, fertigation, and seed treatment.
For broader solutions, see:
chitosan for agriculture applications
Why SY-COS is Better Than Standard COS
| Feature | Standard COS | SY-COS |
|---|---|---|
| Molecular Weight | Moderate | <1500 Da |
| Solubility | Good | Excellent |
| Solution Clarity | Lower | 180 clarity |
| Foliar Absorption | Moderate | Fast |
| Hydroponic Compatibility | Basic | High |
| Plant Response | General | Enhanced |
SY-COS is positioned as a mid-premium commercial agricultural COS designed for growers who want measurable performance.
Mechanism of Action in Plants
SY-COS improves plant performance through multiple biological pathways.
1. Plant Immunity Activation
Stimulates natural defense pathways that help crops respond to pathogens and environmental pressure.
Supports:
- stronger resistance to fungal stress
- healthier leaf tissue
- better recovery after stress events
2. Root Growth Enhancement
Promotes root elongation and root branching.
Benefits:
- larger nutrient absorption area
- better water efficiency
- stronger early crop establishment
3. Nutrient Transport Support
Improves internal nutrient movement throughout the plant.
Helps optimize:
- nitrogen efficiency
- micronutrient utilization
- balanced crop metabolism
4. Chlorophyll and Photosynthesis Support
Encourages healthier leaf color and stronger photosynthetic activity, helping crops convert energy more efficiently.
5. Stress Tolerance
Supports resilience during:
- drought periods
- salinity pressure
- transplant shock
- temperature fluctuations
Product Overview – SY-COS Agricultural Grade
Product Name: Chitosan Oligosaccharide (SY-COS)
Grade: Agricultural Grade
Origin: Sea Source
Form: Powder
Appearance: Light yellow powder
Odor: Low / Neutral
Key Technical Data
- Molecular Weight: <1500 Da
- Clarity: 180
- Solubility: Fully water-soluble
- Processing: Enzymatic hydrolysis
- Function: Biostimulant / Crop Defense Activator / Nutrient Efficiency Enhancer
Best Application Systems
Foliar Spray Programs
Ideal for rapid leaf absorption.
Benefits:
- faster visible response
- stronger leaf health
- improved crop vigor
Hydroponic Systems
Excellent for clear nutrient reservoirs and precision dosing.
Benefits:
- low turbidity
- high uptake efficiency
- suitable for high-value greenhouse crops
Fertigation & Drip Irrigation
Supports root-zone efficiency and nutrient synergy.
Seed Treatment
Used to improve:
- germination consistency
- root initiation
- seedling vigor
Recommended Crop Segments
Vegetables
- tomato
- cucumber
- pepper
- lettuce
Improves vigor, fruit set, and uniformity.
Fruits
- berries
- grapes
- citrus
- orchard crops
Supports quality, sugar accumulation, and plant resilience.
Field Crops
- rice
- corn
- wheat
- soybean
Improves growth consistency and stress management.
Greenhouse & Export Crops
Best for precision agriculture where consistency matters.
Commercial Benefits for Buyers
SY-COS helps distributors and growers achieve:
- stronger repeat purchase rates from performance users
- improved crop results vs cheap generic COS
- easier formulation into spray programs
- broader market appeal than premium-only products
- excellent balance of price and performance
Why Buy SY-COS Instead of Generic COS
Most low-cost COS products compete only on price.
SY-COS competes on:
- better absorption
- clearer solutions
- stronger crop response
- reliable consistency
- professional-grade performance
This creates better long-term value.
Bulk Supply for Agricultural Buyers
We supply SY-COS for:
- fertilizer manufacturers
- distributors
- greenhouse operations
- hydroponic suppliers
- agrochemical blenders
- commercial farms
Packaging Options
- 25 g sample
- 1 kg standard pack
- bulk commercial supply
Support Available
- COA
- technical data
- distributor pricing
- crop-use guidance
Frequently Asked Questions
What makes SY-COS better than standard COS?
Lower molecular weight, better clarity, faster absorption, and stronger field performance.
Can SY-COS be used in hydroponics?
Yes. It is highly suitable for clear nutrient systems.
Is SY-COS safe for organic-style programs?
It is biodegradable and commonly used in sustainable agriculture systems.
Can it mix with fertilizer programs?
Yes, it is commonly used in foliar and fertigation systems.
Who should buy SY-COS?
Growers and formulators who want better results than generic COS without paying premium-tier prices.
Request Bulk Pricing and Technical Support
If you need a commercial-grade Chitosan Oligosaccharide with stronger performance than generic market products, SY-COS is an ideal solution.
Contact:
steve@chitosanglobal.com
Improve crop health, increase nutrient efficiency, and upgrade plant performance with SY-COS Agricultural Grade Chitosan Oligosaccharide.
Applications
Hydroponic Systems
May be evaluated in hydroponic systems where solution clarity and controlled insoluble matter are important.
Learn moreFertigation and Drip Irrigation
Suitable for experimental fertigation and drip-irrigation formulations, subject to filtration and compatibility testing.
Learn moreSeed Treatment
May be evaluated in seed-treatment formulations intended to support germination and early plant establishment.
Learn moreRoot-Zone Formulations
Suitable for experimental root-zone applications targeting root development and nutrient-use efficiency.
Learn morePlant-Defense Research
May be evaluated as a chitosan-based elicitor in plant-defense and crop-response research. Crop-specific validation is required.
Learn moreGreenhouse Agriculture
Intended for evaluation in greenhouse and controlled-environment crop systems.
Learn moreDirections for Use
Add the required quantity gradually to clean water while stirring until evenly dispersed or dissolved. Begin with a small laboratory, greenhouse, or field trial. Determine the final concentration according to crop, growth stage, application method, water quality, and environmental conditions. Before combining with fertilizers, micronutrients, pesticides, or other agricultural inputs, conduct tank-mix, precipitation, filtration, stability, and phytotoxicity testing.
Storage and Handling
Store in the original tightly sealed container in a cool, dry, and well-ventilated location. Protect from moisture, direct sunlight, excessive heat, and contamination. Use clean, dry equipment when dispensing. Keep the package sealed when not in use. Follow the storage conditions stated in the current Safety Data Sheet and batch-specific Certificate of Analysis.
Safety Information
- Signal Word
- Refer to the current product-specific Safety Data Sheet.
- Hazard Classification
- No verified GHS hazard classification is stated in the supplied Certificate of Analysis. Consult the current SY-COS Safety Data Sheet before handling.
- Hazard Codes
- Refer to the current product-specific SDS for applicable hazard statements and codes.
- Precautionary Statements
- Avoid generating or inhaling airborne powder. Avoid contact with eyes and prolonged contact with skin. Wear suitable protective gloves and safety glasses during handling. Use appropriate respiratory protection when dust may be generated. Wash hands thoroughly after handling. Consult the current product-specific Safety Data Sheet before use.
- Storage Class
- Dry powdered agricultural ingredient; confirm the official storage class from the current product-specific SDS.
Protocols and Articles
SY-COS Agricultural Grade Chitosan Oligosaccharide
Product specifications, agricultural applications, quality information, packaging, and ordering.
Chitosan in Agriculture
Educational overview of chitosan-based materials in agricultural formulations.
Chitosan for Plant Defense and Crop Protection Systems
Information about chitosan as an elicitor and plant-defense formulation ingredient.
Chitosan for Seed Coating
Information about chitosan-based seed treatments and coating research.
Frequently Asked Questions
What is SY-COS?
SY-COS is an agricultural-grade chitosan oligosaccharide powder with a documented molecular weight below 1500 Da and batch purity of 96.15%.
What is its molecular weight?
The specification is below 1500 Da. The documented batch result is 1220 Da
What is the product purity?
The minimum content specification is 90%. The documented batch result is 96.15%.
Is SY-COS water-soluble?
The product is described as water-soluble. The batch contains 0.1% insoluble matter against a maximum specification of 0.5%.
What is its degree of deacetylation?
The minimum specification is 85%. The documented batch result is 90%.
What is the pH?
The specified pH range is 4.5–7.0 for a 1% aqueous solution. The batch result is 5.32.
What is the turbidity?
The maximum specification is 200. The documented batch result is 103.3.
Can SY-COS be used in hydroponics?
It may be evaluated in hydroponic formulations, subject to compatibility and filtration testing.
Can it be used as a foliar spray?
It may be evaluated in foliar formulations. Concentration should be determined through crop-specific trials.
Can it be mixed with fertilizers or pesticides?
Compatibility must be confirmed through tank-mix, precipitation, stability, filtration, and phytotoxicity testing.
Were heavy metals detected?
Lead, arsenic, and mercury were not detected under the supplier’s analytical procedures.
Is SY-COS mushroom-derived?
The COA does not identify the biological source. A supplier source declaration is required.
Is SY-COS food grade?
No food-grade certification is provided. The COA classifies the product as Agricultural Grade.
What is the minimum order quantity?
The standard minimum order quantity is one 1 kg pack.
What is the shelf life?
This batch was produced on August 15, 2025 and expires on August 14, 2027.
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