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Product Name: Deacetylated Chitin
Synonyms: Chitosan, Poly(D-glucosamine)
Chemical Formula: (C6H11NO4)n
CAS Number: 9012-76-4
Recommended Use: Water treatment, food additive, biomedical material, agriculture
Supplier: Name and contact information of the supplier should always be listed on a supplied sheet in the workplace or for the purchaser reference
Emergency Contact: Local emergency numbers should serve in the event of an accident or health emergency involving the substance
Physical State: Powder, cream to white
Classification: Not classified as a hazardous substance or mixture under OSHA GHS regulations
Potential Health Effects: Dust may cause respiratory irritation, dry throat, coughing, sneezing, eye discomfort, and mild skin irritation
Environmental Hazard: No acute hazard to aquatic systems has been observed at expected industrial concentrations
Signal Word: No signal word required under GHS
Hazard Statements: Dust generated can cause irritation to eyes, skin, nose, and throat upon direct contact or inhalation
Chemical Identity: Deacetylated Chitin
Main Component: Chitosan polymer, degree of deacetylation typically 70-95%
Impurities: Trace amounts of water, mineral salts, glucosamine, residual chitin
Percent (by weight): Chitosan >90%
CAS Number: 9012-76-4
Other Ingredients: Residual solvent and processing aids may be present in minor amounts due to manufacturing
Inhalation: Remove to fresh air, minimize exposure to dust, seek medical attention if respiratory symptoms develop
Eye Contact: Rinse cautiously with water for several minutes, remove contact lenses if present and easy, continue rinsing, consult physician if irritation persists
Skin Contact: Wash area with plenty of water and non-abrasive soap, remove contaminated clothing, consult healthcare if symptoms persist
Ingestion: Rinse mouth, drink plenty of water, do not induce vomiting, seek medical advice if large quantity swallowed or symptoms occur
Note to Physician: Treat symptomatically, no antidote known
Suitable Extinguishing Media: Use water spray, dry chemical, foam, or carbon dioxide
Unsuitable Extinguishing Media: Do not use high-pressure water jet on dust as it may disperse particles
Unusual Fire Hazards: Fine powder poses a risk of dust explosion in the presence of an ignition source
Hazardous Combustion Products: Under fire conditions, may release carbon oxides and nitrogen oxides
Protective Equipment: Firefighters should wear self-contained breathing apparatus and full protective gear
Special Procedures: Keep personnel away from smoke and fumes, use water spray to cool surfaces at risk
Personal Precautions: Avoid breathing dust, avoid contact with eyes and skin, use respiratory protection in poorly ventilated conditions, use gloves and protective eyewear
Environmental Precautions: Prevent bulk material from entering sewers and waterways, minimize further environmental dissemination
Clean-up Methods: Sweep up and place into suitable, labeled, closed containers for disposal; dampen the area with water to prevent airborne dust; ventilate the area after cleanup
Decontamination: Wash spill area and affected tools thoroughly with water
Notification: Report significant spills to appropriate environmental authorities according to local regulations
Handling: Use only with adequate ventilation, keep container closed to minimize dust formation, handle in accordance with good industrial hygiene and safety practice, prevent inhalation and contact with eyes and skin
Storage: Store in cool, dry, well-ventilated area, protect from moisture, light, and incompatible materials like strong oxidizing agents
Packaging Materials: Use original or airtight containers, sealed bags, or fiber drums with liners
Incompatible Materials: Strong acids, strong alkalis, oxidizing reagents
Special Considerations: Avoid sources of ignition, keep away from food and drink, segregate from incompatible substances
Engineering Controls: Local exhaust ventilation, enclosed process equipment, dust suppression systems
Occupational Exposure Limits: No established ACGIH, OSHA, or NIOSH exposure limits; use common nuisance dust limit (10 mg/m3 total dust, 3 mg/m3 respirable fraction)
Personal Protection - Respiratory: NIOSH-approved particulate mask or respirator for high dust levels
Personal Protection - Skin: Wear gloves suitable for chemical handling, disposable or nitrile recommended
Personal Protection - Eyes: Safety goggles with side shields or full-face splash protection
Personal Protection - Other: Protective clothing such as lab coat or coveralls as needed, eye wash stations and safety showers nearby
General Hygiene: Wash hands and exposed skin after use, launder contaminated clothing before reuse
Physical State: Solid powder or flake
Color: White to off-white
Odor: Neutral to slightly fishy
Melting Point: Decomposes before melting (thermal degradation above 200°C)
Boiling Point: Not applicable (polymer)
Solubility: Insoluble in water, dissolves in dilute to moderate acids (e.g., acetic acid)
Density: 0.15–0.3 g/cm3 (bulk, varies by grade)
pH: Typically 6–7 for a 1% solution in dilute acid
Vapor Pressure: Not applicable
Evaporation Rate: Not applicable
Flash Point: Not flammable in solid state; fine dust can combust if suspended in air
Explosion Properties: Dust explosion risk where airborne concentrations are high
Partition Coefficient Log Kow: Not applicable
Chemical Stability: Stable under ordinary storage and use conditions, not prone to rapid decomposition
Conditions to Avoid: Excessive heat, moisture, open flames, static electricity, incompatible substances
Materials to Avoid: Strong oxidizers, concentrated acids or bases
Hazardous Polymerization: Will not occur under normal process conditions
Decomposition Products: Under thermal decomposition, emits carbon oxides, nitrogen oxides, and small amounts of organic vapors
Other Reactivity: Acidic environments may dissolve the material, leading to altered chemical properties
Acute Toxicity: Low oral toxicity in laboratory tests, LD50 ranges above 16,000 mg/kg (rat, oral)
Chronic Toxicity: No evidence of chronic health effects or carcinogenicity reported in scientific literature
Routes of Exposure: Inhalation, ingestion, skin and eye contact
Symptoms: Irritation of respiratory system, mild skin rash, transient eye discomfort
Allergenic Potential: Rare cases of allergy reported, more likely for those with shellfish sensitivity
Mutagenicity/Carcinogenicity: Not mutagenic, not considered carcinogenic
Reproductive Toxicity: No reproductive or developmental effects documented
Additional Information: Classified as a biopolymer and recognized as generally safe (GRAS) by some regulatory bodies for specific uses
Aquatic Toxicity: Non-toxic to fish, aquatic invertebrates, algae at usual industrial discharge levels
Persistence and Degradability: Biodegradable, breaks down by microbial action in natural environments
Bioaccumulative Potential: Low potential, not expected to bioaccumulate
Mobility in Soil: Moderate mobility in acidic soils; minimal leaching from ordinary soils
Other Effects: Does not persist in the environment, contributes organic matter, may aid soil structure
Additional Information: No known negative impact on wastewater treatment systems under recommended usage quantities
Product Disposal: Dispose according to local, regional, and national regulations, use landfill or incineration as permitted
Contaminated Packaging: Rinse thoroughly before recycling or disposal, comply with applicable waste management legislation
Special Precautions: Avoid uncontrolled discharge to waterways or sewage systems
Recycling or Reuse: Where possible, excess non-contaminated product can be recycled for non-critical applications or returned to supplier
Regulatory Compliance: Ensure all disposal operations satisfy local guidelines and required environmental protections
UN Number: Not classified as dangerous goods for transport
UN Proper Shipping Name: Not regulated
Transport Hazard Class: Not applicable
Packing Group: Not assigned
Special Transport Precautions: Prevent generation of airborne dust during loading and unloading; ship in sealed containers
Regulatory Status: Not subject to international, federal, or state transport restrictions for hazardous substances
Other Notes: Ship and handle in accordance with national and regional transport regulations
OSHA: Not classified as a hazardous chemical under OSHA Hazard Communication Standard
TSCA Status: Listed on the US EPA Toxic Substances Control Act (TSCA) Inventory
REACH Status: Registered, exempt, or notified according to European REACH requirements for polymers
FDA Status: Recognized as Generally Recognized as Safe (GRAS) for designated food and pharmaceutical applications
Canadian DSL/NDSL: Included on the Domestic Substances List (DSL)
Other Regional Regulations: Meets safety and import standards for use in Japan, China, Australia, Korea, and many regions globally
Labeling: As a non-hazardous substance, minimum labeling required, but standard safe handling pictograms are recommended for workplace protection
Right-to-Know: Ingredient disclosure as per regional and state requirements
West Ujimqin Banner, Xilingol League, Inner Mongolia, China
