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Material Safety Data Sheet for Triacetonamine (TAA)

Identification

Product Name: Triacetonamine
Chemical Formula: C9H17NO
CAS Number: 826-36-8
EC Number: 212-552-9
Synonyms: 2,2,6,6-Tetramethylpiperidin-4-one
Recommended Use: Intermediate in chemical synthesis, stabilizers, laboratory chemicals
Manufacturer Information: Provided by manufacturer or supplier
Emergency Contact Number: Refer to supplier or local emergency services

Hazard Identification

Hazard Class: Acute toxicity, Skin irritation, Eye irritation
Hazard Statements: Causes skin irritation, causes serious eye irritation, may cause respiratory irritation, harmful if swallowed
Signal Word: Warning
Pictograms: Exclamation mark
Precautionary Statements: Avoid inhalation of dust or fumes, avoid skin and eye contact, wash thoroughly after handling, use only in well-ventilated areas, wear protective gear
Potential Physical Hazards: Combustible dust may form explosive mixtures with air
Potential Health Effects: Irritates mucous membranes, skin, eyes; prolonged exposure may affect the liver and kidneys
Environmental Hazards: May affect aquatic organisms in large quantities

Composition / Information on Ingredients

Chemical Identity: Triacetonamine
Purity: ≥ 98%
Chemical Family: Lactams
Other Components: Trace impurities may be present below reporting thresholds

First Aid Measures

General Advice: Move affected individuals to fresh air, seek medical attention if symptoms appear
Inhalation: Remove to fresh air immediately, provide artificial respiration if breathing is difficult, seek medical attention
Skin Contact: Remove contaminated clothing, wash skin with plenty of soap and water for at least 15 minutes, seek medical help if irritation develops
Eye Contact: Rinse eyes cautiously with water for several minutes, remove contact lenses if present, continue rinsing and get medical attention
Ingestion: Rinse mouth, give water if conscious, do not induce vomiting, seek immediate medical attention
Important Symptoms: Burning sensation, redness, watering eyes, shortness of breath

Fire-Fighting Measures

Suitable Extinguishing Media: Foam, dry chemical, carbon dioxide, water spray
Unsuitable Extinguishing Media: Straight water jets
Special Hazards: Emits toxic fumes (carbon oxides, nitrogen oxides) under fire conditions, combustible dust hazard
Protective Equipment: Wear self-contained breathing apparatus and full firefighting protective clothing
Firefighting Precautions: Evacuate area, cool exposed containers with water, avoid breathing fumes, prevent runoff from entering drains or water sources

Accidental Release Measures

Personal Precautions: Evacuate unnecessary personnel, provide proper ventilation, avoid dust formation, use personal protective equipment
Environmental Precautions: Prevent entry into waterways, sewers, basements, or confined areas
Cleanup Methods: Contain and collect spilled product using non-sparking tools, place in appropriate disposal container, wash spill site after material pickup
Emergency Procedures: Isolate spill area, follow company procedures or contact authorities for large spills

Handling and Storage

Handling: Use only with adequate ventilation, avoid contact with skin and eyes, do not breathe dust, handle away from ignition sources, avoid creating dust clouds, keep away from incompatible materials
Hygienic Practices: Wash hands thoroughly after handling, do not eat, drink, or smoke in working area, remove contaminated clothing and wash before reuse
Storage Conditions: Store in tightly closed containers, keep in cool, dry, well-ventilated place, protect from direct sunlight and moisture, keep away from oxidizing agents and acids
Incompatible Storage: Store separately from oxidizers, strong acids, strong bases

Exposure Controls and Personal Protection

Occupational Exposure Limits: No established limits for TAA, general dust exposure limits may apply
Engineering Controls: Use local exhaust ventilation, process enclosures, or other engineering methods to keep airborne levels below recommended limits
Personal Protective Equipment: Protective gloves (nitrile or rubber), safety glasses or chemical splash goggles, laboratory coat or apron, suitable respiratory protection if dust or aerosols are generated
Workplace Hygiene: Eyewash stations and safety showers in work area, regular monitoring of vapor/dust levels, personal hygiene emphasized

Physical and Chemical Properties

Appearance: White to off-white crystalline powder
Odor: Mild, characteristic
Melting Point: 96 – 99 °C
Boiling Point: 220 – 222 °C at 1013 hPa
Flash Point: 104 °C (closed cup)
Solubility: Slightly soluble in water, readily soluble in organic solvents
Vapor Pressure: Low at ambient temperature
Specific Gravity: Approximately 0.95 – 1.00 (water=1)
pH: Not determined (solid)
Partition Coefficient (log Kow): Not available
Auto-ignition Temperature: Not specified
Explosive Properties: Dust can form explosive mixtures with air
Oxidizing Properties: Not an oxidizer

Stability and Reactivity

Reactivity: Reacts with strong oxidizers and acids
Chemical Stability: Stable under recommended storage conditions
Possibility of Hazardous Reactions: Forms flammable/explosive mixtures with air (dust)
Conditions to Avoid: Ignition sources, heat, static discharge, moisture, oxidizing conditions
Incompatible Materials: Oxidizing agents, strong acids, reducing agents
Hazardous Decomposition Products: Carbon monoxide, carbon dioxide, nitrogen oxides under combustion or fire conditions

Toxicological Information

Acute Toxicity: Harmful if ingested or inhaled; LD50 data in rats 400 – 900 mg/kg (oral), can cause gastrointestinal and respiratory tract irritation
Skin Corrosion/Irritation: Causes skin irritation with redness and possible dryness
Serious Eye Damage/Irritation: Causes serious irritation, redness, pain, blurred vision possible
Respiratory/Skin Sensitization: Sensitization rare, but prolonged exposure increases risk
Chronic Effects: Liver and kidney damage possible from repeated exposure
Ingestion Hazards: Abdominal pain, nausea, vomiting, potential central nervous system effects
Carcinogenicity: No information from IARC, NTP, or OSHA
Mutagenicity: Insufficient data
Reproductive Toxicity: No clear evidence in animal studies

Ecological Information

Ecotoxicity: May cause harm to aquatic organisms, especially in concentrated forms
Aquatic Toxicity: No detailed data, but similar compounds show moderate toxicity (LC50 values for fish or daphnia not well documented)
Persistence and Degradability: Slow degradation in the environment; breakdown by microbial action possible
Bioaccumulative Potential: Low to moderate potential, not expected to bioaccumulate significantly
Mobility in Soil: Limited due to low water solubility, possible migration in soil with adequate rainfall or leaching
Other Adverse Effects: Release to environment should be avoided, no known ozone-depleting potential

Disposal Considerations

Waste Disposal: Dispose in accordance with local, regional, and national regulations; incinerate in approved facility or landfill as hazardous chemical waste
Contaminated Packaging: Containers must be thoroughly decontaminated before reuse or disposal, follow approved drum reconditioning or disposal services
Special Disposal Precautions: Avoid release to environment, ensure material does not contaminate water or soil sources

Transport Information

UN Number: Not classified as dangerous for transport under most regulations
Transport Hazard Class: Not regulated
Packing Group: Not designated
Proper Shipping Name: Triacetonamine
Marine Pollutant: Not usually classified as such
Special Precautions: Protect against physical damage, avoid moisture and ignition sources during transit

Regulatory Information

TSCA: Listed on the US Toxic Substances Control Act inventory
REACH: Registered under European REACH guidelines, subject to annual quantity reporting
OSHA: Not specifically regulated under OSHA’s hazardous chemical standard, general hazard communication applies
Other Regulations: Subject to local, state, and national chemical safety and environmental protection statutes; users responsible for compliance
Labeling Requirements: Hazard symbols, risk phrases, and safety phrases required on containers and shipping documents where applicable
Restrictions: Use limited to industrial, laboratory, or specialty chemical applications as described by supplier