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Chemical Name: 1-(3-Pyridylmethyl)-3-(4-Nitrophenyl)Urea
Common Synonyms: No usual trade or trivial names traceable in common circles
Molecular Formula: C13H11N4O3
Molecular Weight: Around 270.25 g/mol
Structure: This chemical features a urea backbone with a pyridylmethyl group connected to one nitrogen atom and a nitrophenyl group at the other
Physical State: Typically found as a solid powder in lab settings
Color: Pale yellow to slightly brown, depending on purity
Odor: Odorless or faint chemical scent, not pungent
Recommended Use: Research applications, not manufactured for commercial consumer use
Main Health Risks: Irritation to eyes, skin, and respiratory tract. Risk of more serious symptoms with high exposure due to nitroaromatic and pyridine content
Acute Effects: Can cause headaches, dizziness, or nausea if inhaled or absorbed through skin or mucous membranes
Chronic Risks: Repeated or long-term exposure may target liver, kidneys, and blood system based on structural similarities to other nitroaromatic chemicals
Labeling Requirements: Harmful if ingested, contact avoided
Personal Sensitivity: Some individuals may react to even low doses because aromatic nitro compounds sometimes sensitize or provoke allergic reactions
Main Component: 1-(3-Pyridylmethyl)-3-(4-Nitrophenyl)Urea
Purity: Laboratory-prepared samples may reach 98–99% purity
Significant Impurities: Traces of precursor amines (3-pyridylmethylamine, 4-nitroaniline), solvents, or urea derivatives
Additives: None intentionally present
Inhalation: Immediate removal to fresh air; persistent symptoms warrant medical attention
Skin Contact: Wash affected area with plenty of water and mild soap; contaminated clothing should be removed right away
Eye Contact: Flush eyes with water for at least 15 minutes; medical advice if irritation persists
Ingestion: Do not induce vomiting. Rinse mouth and seek medical care
Delayed Effects: Watch for signs of respiratory distress or allergic response within several hours
Sensitivity: Material itself doesn’t show high volatility or explosive potential, yet its aromatic nitro group could fuel small fires
Suitable Extinguishing Media: Water spray, dry chemical, or carbon dioxide. Avoid direct streams that may scatter powder
Fire Hazards: On decomposition, toxic fumes such as nitrogen oxides, carbon monoxide, and cyanide species may arise
Protective Gear: Positive-pressure breathing apparatus and full protective gear prevent exposure to smoke or fumes
Personal Protection: Laboratory-standard nitrile gloves, safety glasses, and chemical-resistant lab coats
Spill Cleanup: Absorb solid with wet paper towels or compatible absorbent. Minimize dust generation
Ventilation: Work in a well-ventilated space, ideally under a fume hood
Disposal: Secure in sealed containers labeled for hazardous chemical waste, never down drains
Decontamination: Wipe surface thoroughly with mild detergent and water after removal
Handling Precautions: Avoid inhalation, skin contact, or ingestion; work in controlled areas with easy access to wash stations
Storage: Keep material in airtight, chemically stable containers away from heat, direct sunlight, and incompatible materials such as oxidizers or strong acids
Special Requirements: Designated chemical storage, secondary containment for bulk storage to manage leaks
Temperature Sensitivity: Store at room temperature; avoid freezing or excessive heating
Engineering Controls: Use of certified chemical fume hoods or localized exhaust systems
Eye Protection: Chemical splash goggles or full-face shields
Skin Protection: Gloves rated for organic chemicals, lab coats, and long pants; closed shoes mandatory
Respiratory Protection: Respiratory masks with organic vapor cartridges for potential dust or fume generation during weighing or mixing operations
Occupational Exposure Limits: No regulatory exposure limits set for this specific compound; apply general caution used for nitroaromatic or pyridine-containing chemicals
State: Solid
Appearance: Fine crystalline or powdery texture, pale yellow
Melting Point: Likely falls in range typical for substituted ureas, estimated between 180–200 °C
Solubility: Poorly soluble in water; greater solubility expected in organic solvents such as DMSO, acetone, or ethanol
Odor and Taste: Inconspicuous odor, not palatable
Boiling Point: Organic solids like this generally decompose before boiling
Vapor Pressure: Negligible under standard conditions
Chemical Stability: Remains stable under normal temperatures and pressures if kept dry and sealed
Hazardous Reactions: Strong acids, bases, oxidizing agents, or reducing agents can prompt dangerous decomposition or transformation
Decomposition Byproducts: Nitrogen oxides, carbon monoxide, carbon dioxide, and low levels of cyanide gas have shown up from similar nitroaromatic compounds
Polymerization: No indication of hazardous polymerization under intended use
Likely Routes of Entry: Inhalation, skin contact, accidental ingestion
Acute Toxicity: Nitroaromatic structure rings alarm bells—potential for methemoglobinemia, headaches, and mild respiratory irritation in susceptible people
Chronic Effects: Experience with related chemicals highlights concerns over nervous system effects, organ damage, and even carcinogenicity after long or repeated contact, though no specific cancer link seen for this exact compound in animal or human studies
Local Effects: Skin or mucous irritation, redness, mild burns, and eye discomfort may develop
Allergic Reactions: No confirmed sensitization cases have appeared in published papers, though risk can’t be entirely written off
Environmental Release: Accidental discharge into water, soil, or air could harm aquatic organisms and microorganisms due to nitro and pyridine subunits
Biodegradability: Complex aromatic compounds break down slowly in the environment, risking bioaccumulation in sediments and living tissues
Toxicity to Organisms: Small-scale laboratory studies on related nitroaromatic and pyridine compounds show toxicity to fish, invertebrates, and beneficial bacteria
Persistence: Substance resists breakdown, increasing potential for long-term ecosystem effects if not controlled closely
Discarding Methods: Do not flush or discard with regular trash. Always handle as hazardous chemical waste
Recommended Disposal: Route in sealed, labeled waste drums for incineration at permitted hazardous waste facilities
Legal Requirements: Follow national or local hazardous substance laws; consult with environmental health and safety officers at academic or institutional locations
Avoided Methods: No open burning, no dumping into sinks, drains, or earth
Shipping Status: Ship as hazardous chemical. Standard procedure in fully sealed containers with secondary containment
Packing Requirements: Rigid, shatterproof inner and outer containers, absorbent lining recommended
Labeling: Mark packages with hazard warnings for both toxic and environmental risk
Special Transport Cautions: Avoid extreme temperatures and direct sunlight during transport
Regulatory Shipping Class: Typically matches flammable solids or toxic organics, even if not specifically assigned, taking a cue from nitroaromatic transport rules
GHS Classification: Follows guidelines for molecules containing nitroarene and urea moieties; probable health hazard emphasis
Regulatory Controls: Subject to controls on the transport, storage, and use of experimental and research-only chemicals
Reporting Requirements: Discharge or accidental loss calls for reporting to environmental and occupational health authorities depending on location
Restricted Uses: Not for drug, food, or general consumer applications
Lab Safety Oversight: Institutional environmental health and safety offices typically review and monitor inventory and waste
