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Chemical Name: P-Nonylphenol
Common Uses: Detergents, emulsifiers, epoxy curing agents. This chemical finds its way into industrial processes and cleaning products, showing up in factories and sometimes in labs for research.
Appearance: Yellowish, viscous liquid with a mild phenolic odor. Anyone working in a plant or cleaning up after an experiment recognizes the oily touch and lingering smell.
Chemical Formula: C15H24O
Molecular Weight: 220.35 g/mol
Hazard Classes: Skin and eye irritant, hazardous to aquatic life. P-Nonylphenol is bad news for waterways, showing up as a persistent pollutant and hormonal disruptor.
Routes of Exposure: Inhalation, dermal contact, eye contact, ingestion. Spills can lead to quick skin absorption, and inhaled vapors cause throat irritation.
Chronic Risks: Endocrine-disrupting properties, potential reproductive harm. Factories using this chemical face strict regulatory scrutiny, especially near rivers or wildlife areas.
Precautionary Statements: Prevent release into the environment, avoid contact with skin or eyes, use protective gear.
Substance: 4-Nonylphenol (branched, mixed isomers common)
Concentration: Pure or >90% in many commercial batches.
Impurities: Minor amounts of other alkylphenols may be present.
CAS Number: 84852-15-3
Eye Contact: Rinse with water for many minutes, seek medical help for persistent irritation.
Skin Contact: Wash with soap and water, remove contaminated clothes. Prolonged contact raises rash risk.
Inhalation: Move to fresh air, get medical help for coughing or breathing discomfort.
Ingestion: Rinse mouth, don’t induce vomiting, get medical attention.
Suitable Extinguishing Media: Use foam, dry chemical, or carbon dioxide. Water spray helps cool containers but large quantities of water carry the risk of spreading contamination.
Special Hazards: Combustion releases toxic fumes: carbon oxides, noxious gases. Firefighters face hazards from smoke inhalation and runoff.
Protective Equipment: Full protective gear, self-contained breathing apparatus.
Fire Behavior: May produce dense smoke, slippery residues, and re-ignition risks if hot surfaces remain.
Personal Precautions: Use gloves, goggles, avoid breathing vapors. Industrial floors become slick fast, adding slipping hazards.
Environmental Precautions: Prevent product from reaching drains or waterways. Nonylphenol builds up in sediment and clings to soil.
Containment: Use inert materials such as sand for diking. Vacuum or collect residue using non-sparking equipment.
Cleanup: Shovel up solid material, wipe surfaces with damp disposable cloths, ventilate enclosed spaces.
Handling: Wear protective clothing and gloves. Keep away from open flames, oxidizers, and direct sunlight.
Storage: Store in tightly closed, labeled containers in cool, well-ventilated areas. Segregate from strong acids and bases.
Other Precautions: Rotate stock by date to reduce degradation risk, monitor for leaks. Worker training on spills and emergency response matters.
Exposure Limits: No established OSHA PEL, but limiting exposure is common workplace practice.
Engineering Controls: Local exhaust or chemical fume hoods control airborne concentrations.
Personal Protective Equipment: Chemical-resistant gloves, splash goggles, impermeable aprons, and, in some cases, respirators.
Hygiene Measures: Wash hands and face after handling; no eating or drinking in work zones.
Physical State: Oily liquid
Color: Yellow to pale amber
Odor: Mild phenolic scent
Boiling Point: About 294°C
Melting Point: Often below room temperature
Vapor Pressure: Low at room temperature
Solubility: Low in water, miscible in organic solvents
Density: 0.94–0.98 g/cm³
Chemical Stability: Stable in normal conditions if stored properly.
Decomposition Risks: Produces hazardous vapors on strong heating.
Reactive Incompatibilities: Reacts with strong oxidizers, acids, bases.
Hazardous Reactions: Not expected under correct storage, but past spills in real industry settings have shown foam and heat if mixed with the wrong stuff.
Acute Effects: Skin/eye irritation, potential respiratory irritation.
Chronic Effects: Disrupts hormone systems, possible impact on fertility, may interfere with aquatic food chains once released.
Sensitization: Some reports of allergic skin response in regular handlers.
Routes of Exposure: Absorbed through skin, inhaled as mist or vapor, ingested accidentally in industrial mishaps.
Animal Studies: Showed effects on reproductive organs at low doses over repeated exposure.
Environmental Impact: Toxic to fish and aquatic invertebrates, persistent in soil and water.
Bioaccumulation: Significant, with steady buildup in organisms over time.
Degradability: Slow to break down under normal environmental conditions. Real concern arises in wastewater streams leaving factories or municipal treatment plants.
Water Treatment: Many conventional plants struggle to fully remove nonylphenol, so trace residues end up in rivers.
Waste Handling: Treat as hazardous waste. Collect and send for incineration at facilities with scrubbers for toxic gases.
Container Disposal: Triple rinse, puncture, send with hazardous waste shipments.
Disposal Regulations: Follow local, state, and federal disposal rules. In some areas, regulators have cracked down on landfilling of nonylphenol-laced materials due to groundwater risk.
Spill Residue: Don’t wash down the drain—collect absorbed material for proper disposal.
UN Number: May be classified as environmentally hazardous in some jurisdictions.
Proper Shipping Name: Environmentally hazardous substance, liquid.
Hazard Class: Varies by mode of transport and concentration.
Packing Group: III or stronger, depending on national rules.
Transit Restrictions: Many shippers refuse bulk containers without environmental permits or secondary containment.
Global Regulations: Restricted under REACH in the EU, subject to stricter wastewater limits in North America, flagged as a priority pollutant in many regions.
Workplace Safety Laws: Employers must train workers, provide protective clothing, report spills over certain thresholds.
Consumer Product Bans: Several countries block its use in household cleaners or textiles. Companies looking to export or import products containing nonylphenol face extra scrutiny.
Reporting Thresholds: Facilities handling large volumes report to environmental agencies under local emergency planning and community right-to-know rules.
