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Chemical Name: 4-Dipropylaminobenzenediazonium Zinc Chloride
Common Uses: Research chemical, synthetic intermediate in dye and pigment industries
Physical Appearance: Pale crystalline solid
Odor: Slightly amine-like
Hazard Symbols: Skull and crossbones, corrosive
Relevant Chemical Groups: Aromatic diazonium compound, organozinc salt
Main Health Risks: Contact with skin and eyes causes burns, ingestion can lead to abdominal pain, vomiting, possible organ damage. Dust inhalation may irritate airway.
Primary Routes of Exposure: Skin absorption, inhalation, accidental ingestion
Acute Effects: Immediate burning sensation, tissue corrosion, coughing, bronchial irritation
Chronic Effects: Potential for allergic skin reaction, liver and kidney stress with repeated exposure
Fire/Explosion Risk: Decomposes explosively at high temperature; diazonium salts notorious for sudden decomposition emissions
Environmental Concerns: Toxic to aquatic life; persistent in soil and surface water, zinc leaching may disrupt local ecosystems
Pictogram Recommendations: GHS corrosive, toxic, environmental hazard symbols
Active Compound: 4-Dipropylaminobenzenediazonium Zinc Chloride — complex coordination salt
Percent Composition: Substance prepared specifically for custom laboratory use; no inert carrier
Other Ingredients: None known. Potential trace impurities relate to synthetic pathway used.
Sensitivity: Unstable under heat, friction, or shock due to diazonium structure
Molecular Formula: C12H20N3ZnCl2 (approximate; actual salt composition can shift slightly with hydration)
Eye Contact: Rinse with plenty of water for at least 15 minutes, keep eyelids open, seek urgent medical help
Skin Contact: Remove contaminated clothes, wash skin thoroughly with soap and water
Inhalation: Move to fresh air, keep person calm and warm, call for prompt emergency evaluation
Ingestion: Rinse mouth, do not induce vomiting, drink water only if fully conscious, get immediate medical attention
Additional Advice: Chemical burns require medical attention even if symptoms seem mild at first
Suitable Extinguishing Media: Use dry chemical, carbon dioxide, or foam. Water may not suppress fires involving diazonium salts.
Special Hazards: Burning releases highly toxic and corrosive fumes such as zinc oxide, nitrogen oxides, and hydrochloric acid gas
Protective Equipment: Firefighters require self-contained breathing apparatus and chemical-resistant suit
Specific Consideration: Avoid disturbing containers; shocks or impacts may trigger decomposition
Personal Protection: Wear chemical splash goggles, nitrile gloves, disposable suit
Spill Cleanup: Evacuate area, ventilate, collect spilled material using spark-proof tools, avoid generating dust
Decontamination: Dampen and scoop up solid material; wipe down surfaces with bleach, but do not mix with other cleaning products
Disposal of Cleanup Materials: Dispose of all contaminated materials in sealed containers through licensed hazardous waste handler
Preventive Measures: Do not allow material into drains or surface water
Safe Handling: Avoid direct contact or inhalation. Work only in well-ventilated fume hood, using spark-resistant tools and non-sparking shoes
Storage Conditions: Store in tightly closed original container, cool dry location, away from sunlight and incompatible chemicals such as strong acids, bases, and reducing agents
Segregation: Separate from food, beverages, and incompatible laboratory chemicals. No eating, drinking, or smoking in storage and use areas.
Labeling: Ensure proper hazard symbols and warning phrases remain legible on packaging
Engineering Controls: Work behind a fume hood sash at all times. Use only in local exhaust ventilated spaces.
PPE: Nitrile gloves, chemical splash goggles, lab coat, closed-toe shoes, and, for potential dust or splash, a face shield
Respiratory Protection: If dust or gas is generated, use a full-face respirator with appropriate chemical cartridge
Hygiene: Wash hands with soap and water after handling; change clothes promptly if contaminated
Exposure Limits: No specific regulatory limits established for this compound, but minimize all exposures
Appearance: Pale crystalline powder
Odor: Slight amine
Boiling Point: Decomposes before boiling
Melting Point: Unstable; decomposes dangerously upon heating
Solubility: Modestly soluble in water, higher solubility in alcohol and acetone
Vapor Pressure: Negligible under ambient conditions
Density: Unknown; expect moderate density due to zinc content
Flash Point: Not applicable; substance decomposes with heat
Hazardous Decomposition Products: Nitrogen oxides, zinc oxide, hydrochloric acid gases produced on heating
Chemical Stability: Unstable especially at elevated temperatures, under light, or from friction
Reactivity Hazards: Strong oxidizing properties; reacts violently with reducing agents, acids, bases, and some metals
Conditions to Avoid: Heat, sparks, shock, mechanical agitation, static discharge
Incompatible Materials: Acids, alkalis, sulfides, phosphorous compounds, organic solvents
Decomposition Products: Clouds of toxic gas, zinc fume, and possible explosive detonation if triggered
Acute Toxicity: No detailed LD50 available, but related diazonium compounds show high acute toxicity
Skin Sensitization: Possible allergic dermatitis
Respiratory Effects: Dust inhalation causes irritation, headache, coughing, nasal inflammation
Systemic Toxicity: Prolonged exposure can affect liver, kidneys, and blood-forming organs
Carcinogenicity: No direct data; related arylamines and diazonium salts known as probable carcinogens; use extreme caution
Reproductive Effects: Insufficient data for assessment, but prudent to assume possible risk due to structural alerts
Symptoms of Exposure: Severe burning pain, headache, nausea, drowsiness, respiratory distress
Persistence: Diazonium salts often resist breakdown in the environment, especially in low-oxygen water or soils
Bioaccumulation: Low for the parent salt; zinc and aromatic fragments may persist and accumulate
Acute Ecotoxicity: Highly toxic to fish, aquatic invertebrates, and natural microbial flora
Mobility: Zinc ions can leach into groundwater, disrupting metal ion balances in living organisms
Long-term Risks: Disruption of aquatic food chains, reduction of biodiversity near discharge sources
Recommendation: Effluent from processes using this compound requires special monitoring and treatment before release
Waste Handling: Treat all residues as hazardous; neutralize only under professional supervision
Prohibited Disposal: Never dump in regular trash, drains, or municipal waste
Recommended Disposal: Incineration or licensed hazardous waste facility with proper chemical destruction procedure
Packaging Disposal: Decontaminate empty containers, then dispose as hazardous chemical waste
Regulatory Guidance: Compliance with national and regional regulations on hazardous substances and toxic metal disposal
Mode Restrictions: Not suited for air or sea shipping without specialized hazardous materials arrangements
Hazard Classification: Belongs to toxic material, corrosive, environmentally hazardous categories
Packing Instructions: Double-contain in strong, sealed chemical-grade packaging; use shock-absorbing cushioning
Labeling: Toxic, Corrosive, and Environmentally Hazardous marks
Transport Conditions: Cool, dry, prevent container movement to avoid friction or impact during transit
Documentation: Accurate declaration of hazardous nature and emergency measures included with shipment
Regulatory Status: Considered hazardous and restricted for import, use, distribution, and disposal in most jurisdictions
Registration: Not typically registered for general commercial applications; strictly for research and industrial synthesis under controlled schemes
Major Regulations: Subject to global conventions on hazardous chemicals, including UN, EU REACH, and local hazardous substance rules
Worker Protection: Covered by workplace safety laws mandating training, PPE, and exposure minimization
Environmental Restrictions: Discharge, disposal, and emissions tightly regulated or outright banned to protect health and biosphere
