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Product Name: Carboxymethyl Chitosan
Synonyms: O-Carboxymethyl Chitosan, CM-Chitosan
CAS Number: 83512-85-0
Product Codes: As specified by supplier
Recommended Use: Biomedicine, wound dressings, drug delivery, food preservative, water treatment, agriculture
Supplier Details: Name, address, phone, and emergency contact of supplier or manufacturer
Emergency Contact Number: Local poison control center or institutional safety office
Classification: Not classified as hazardous under GHS criteria
Physical Hazards: None reported under normal conditions
Health Hazards: Inhalation of dust may cause mild irritation to respiratory tract; contact with eyes or skin may result in mechanical irritation; ingestion of large amounts could cause nausea
Environmental Hazards: Does not present significant risk to aquatic or terrestrial environments
Pictograms: No pictograms required
Signal Word: None
Precautionary Statements: Avoid breathing dust; wash hands after handling; avoid dust generation; use personal protection where dust is present
Chemical Name: Carboxymethyl Chitosan
Molecular Formula: ((C8H13NO5)n)
Molecular Weight: Range typically 200,000–350,000 Da (varies by supplier)
Purity: Usually >90% (refer to supplier documentation)
Impurities: Trace water, sodium chloride, residual chitosan, acetic acid byproducts
Hazardous Components: None exceeding threshold limits for disclosure
General Advice: Remove from exposure area. Move into fresh air if breathing dust. Rinse affected skin under running water. Provide eyewash if dust has contacted eyes. Remove contaminated clothing.
Inhalation: Move individual to fresh air immediately. Seek medical attention if breathing problems persist.
Skin Contact: Wash with soap and water. If irritation develops, seek medical attention.
Eye Contact: Rinse with plenty of water for several minutes, keeping eyelids open. Remove contact lenses if present and easy to do. Seek medical attention if irritation does not cease.
Ingestion: If swallowed, rinse mouth with water and offer small amounts of water. Do not induce vomiting unless directed by medical personnel. Consult a doctor if discomfort or symptoms occur.
Most Important Symptoms: Mild dust-induced eye, respiratory, or skin irritation
Suitable Extinguishing Media: Water spray, dry chemical, foam, carbon dioxide
Unsuitable Extinguishing Media: None known
Specific Hazards: Thermal decomposition may yield carbon oxides (CO, CO2), nitrogen oxides
Protective Equipment for Firefighters: Self-contained breathing apparatus and full protective gear recommended
Special Precautions: Avoid inhaling combustion byproducts; move containers from fire area if safe to do so
Explosion Hazard: Finely divided powder could present a risk of dust explosion under certain conditions
Additional Information: Product is not flammable under normal conditions
Personal Precautions: Use personal protection such as dust mask or respirator, gloves, and goggles in case of large spills; avoid dust formation; ventilate area
Environmental Precautions: Avoid release into sewers or waterways; contain spills to prevent environmental impact, though significant risk is low
Methods for Containment: Sweep or vacuum up material, minimizing dust
Methods for Cleanup: Place recovered material in suitable, labeled container for proper disposal
Reference to Other Sections: For personal protection see Section on Exposure Controls and Personal Protection
Handling: Keep containers tightly closed; avoid creating dust; handle with care to prevent contamination and moisture ingress; use in areas with good ventilation
Protection from Incompatibles: Store away from strong acids and oxidizing agents
Hygiene Measures: Wash hands after handling; do not eat, drink, or smoke during use; prevent contact with skin, eyes, and clothing
Storage Conditions: Store in cool, dry, well-ventilated place; protect from direct sunlight, heat, and moisture; keep container securely sealed
Storage Incompatibilities: Incompatible with strong oxidizing agents; separation from food and drink strongly advised
Occupational Exposure Limits: No established exposure limits; treat as nuisance dust (generally, OSHA PEL for particulates not otherwise regulated: 15 mg/m³ total dust, 5 mg/m³ respirable)
Engineering Controls: Local exhaust ventilation or use in fume hood to minimize dust
Respiratory Protection: Dust mask or NIOSH-approved respirator if concentrations exceed recommended limits
Eye Protection: Safety goggles or face shield to prevent particulate contact
Skin Protection: Laboratory gloves (nitrile or latex recommended) and protective clothing
Hygiene Measures: Wash thoroughly after handling and before meals; remove contaminated clothing and wash before reuse
Other Protection: Emergency eyewash station and safety shower recommended where material handled in bulk
Appearance: Off-white to pale yellow powder or granules
Odor: Slight characteristic odor, faintly amine-like
Odor Threshold: Not available
pH (1% Solution): Typically 6–8
Melting Point: Decomposes above 230°C
Boiling Point: Not applicable
Flash Point: Not applicable
Flammability: Not classified as highly flammable; dust may combust under specific conditions
Vapor Pressure: Not applicable
Solubility: Water-soluble; insoluble in many organic solvents
Density: 0.5–0.9 g/cm³ (bulk density, varies by manufacturer)
Partition Coefficient: Not available
Autoignition Temperature: Not established
Decomposition Temperature: Above 230°C, emits toxic gases
Viscosity: Not applicable to solid
Other Data: Hygroscopic; readily absorbs moisture from air
Chemical Stability: Stable under normal handling and storage conditions
Stability Concerns: Absorbs moisture, leading to degradation
Reactivity: Reacts with strong oxidizers and mineral acids
Possibility of Hazardous Reactions: No hazardous polymerization observed
Conditions to Avoid: High humidity, heat, open flames, incompatible chemicals
Incompatible Materials: Strong acids, strong oxidizing agents, alkali metals
Hazardous Decomposition Products: Oxides of carbon, nitrogen, ammonia, traces of other potentially toxic fumes on burning
Other Information: Keep product dry to preserve properties and avoid clumping
Routes of Exposure: Inhalation, ingestion, skin and eye contact
Acute Toxicity: Data indicates low oral and dermal toxicity in animal studies; estimated LD50 >2000 mg/kg (rat, oral)
Inhalation: Dust may cause minor irritation of mucosa or throat
Skin Contact: Minor and temporary irritation reported in sensitive individuals
Eye Contact: Physical particulate irritation; generally reversible
Ingestion: Large quantities could lead to gastrointestinal discomfort
Sensitization: No evidence of sensitization reactions in studies
Carcinogenicity: No classification as a carcinogen by IARC, NTP, OSHA
Mutagenicity/Genotoxicity: No available data to support mutagenic risk
Long-term Exposure: No evidence for chronic toxicity in current literature
Medical Conditions Aggravated by Exposure: Pre-existing respiratory conditions may be aggravated by dust
Ecotoxicity: Not considered toxic to aquatic organisms; breaks down into natural polymers in the environment
Persistence and Degradability: Readily biodegradable; decomposes via natural processes
Bioaccumulative Potential: No evidence for bioaccumulation
Mobility in Soil: Low; binds to soil and organic matter
Other Adverse Effects: Product derived from natural sources; low environmental threat
Additional Information: Spills in large quantity can temporarily alter water pH and increase biological oxygen demand
Waste Treatment Methods: Dispose of in accordance with local, regional, or national regulations
Product Disposal: Transfer to authorized chemical waste handler or incinerate under controlled conditions
Container Disposal: Empty containers may hold residues; rinse thoroughly and dispose as hazardous or non-hazardous waste per guidance
Environmental Precautions: Avoid disposal into drains, surface, or ground water; prevent significant quantities from entering soil
Special Considerations: Recover or recycle material whenever possible
UN Number: Not regulated
UN Proper Shipping Name: Not regulated
Transport Hazard Class: Not applicable
Packing Group: Not applicable
Environmental Hazards: None known
Special Precautions for User: Protect packages from moisture, punctures, crushing during transport
Transport in Bulk: Not subject to bulk shipment regulations
DOT, IMDG, IATA: Not controlled under these regulations
U.S. TSCA: Not listed or not subject to TSCA; consult supplier
REACH Registration: Registration or exemption status to be verified with supplier
DSL/NDSL (Canada): Check with supplier or regulatory agency
OSHA Hazards: Not considered hazardous
SARA Title III: Not listed as a reportable substance
California Prop. 65: Not listed
Other National/Local Regulations: Refer to individual country requirements for import, sale, and label
