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Chemical Name: Nonylphenol Polyoxyethylene Ether
Common Names: Nonylphenol Ethoxylate, NPE
Appearance: Typically a viscous, colorless to light-yellow liquid
Odor: Slight, characteristic
Primary Use: Used as a surfactant in detergents, emulsifiers in various industrial processes, and dispersing agents in formulations for paints and coatings. Extensive use in textile processing, pulp and paper industry, as well as in crop protection formulations
Hazard Classification: Considered an irritant for skin and eyes, moderate toxicity upon inhalation or ingestion, risk of long-term environmental impact
Acute Effects: May cause redness and pain if it comes into contact with skin or eyes. Swallowing large amounts carries risk of nausea, vomiting, and stomach upset
Chronic Effects: Nonylphenol ethoxylates can impact hormone systems in wildlife, with strong evidence of endocrine disruption; potential allergic reactions reported for frequent exposure
Key Warnings: Harmful to aquatic life with long-lasting effects, risk of bioaccumulation in aquatic ecosystems
Main Ingredient: Nonylphenol Polyoxyethylene Ether (mixture of ethoxylated nonylphenol molecules; ethylene oxide and nonylphenol components)
Purity: Often varies between 85% to 99% active matter depending on specific grade
Other Constituents: Minor portions of nonylphenol, unreacted ethylene oxide, water
Skin Contact: Immediately wash exposed area thoroughly with soap and water. Remove contaminated clothing to prevent further absorption through the skin. Seek attention if irritation persists
Eye Contact: Rinse gently with plenty of water for over ten minutes, lifting upper and lower eyelids occasionally. Do not rub or keep eyes shut tightly, since this can cause further abrasion
Inhalation: Move affected person to fresh air quickly. If symptoms—like headache, dizziness, coughing, or respiratory distress—occur, consult a doctor without delay
Ingestion: Rinse mouth with clean water, do not induce vomiting. Observe for signs of gastrointestinal upset, and get medical support if any symptom appear
Suitable Extinguishing Media: Water mist, dry chemical powder, foam, or carbon dioxide. Do not use water jets directly, since high pressure can spread the spilled material
Hazards from Combustion: Burning or exposure to high temperatures may generate hazardous decomposition products such as carbon monoxide, carbon dioxide, and traces of oxides of nitrogen
Special Protective Gear: Firefighters should wear self-contained breathing apparatus (SCBA) plus standard full turn-out gear to protect against fumes and the possibility of caustic splashes
Personal Precautions: Wear protective gloves, goggles, and boots to avoid direct skin or eye contact. Work in a well-ventilated area to avoid accumulation of vapors or aerosols
Spill Handling: Absorb in dry earth, sand, or other inert absorbent. Shovel up solidified mass or moistened absorbent for disposal. Flush spill area with plenty of water, prevent runoff into drains since aquatic species are vulnerable
Environmental Measures: Take steps to contain the secretion. Early isolation of spill and careful material control make a real difference in lessening downstream environmental burden
Safe Handling: Always keep containers tightly closed when not in use. Avoid breathing aerosols or mist produced when pouring or mixing. Handle only with suitable ventilation systems or with proper local exhausts
Storage Conditions: Retain in cool, dry, well-ventilated areas, away from direct heat, sunlight, and incompatible materials like strong acids, strong bases, and oxidizing chemicals
Special Notes: Containers with residues can still contain hazardous traces. Practice regular inspection of storage vessels since corrosion can lead to chemical seepage over time
Engineering Controls: Work in areas with established mechanical ventilation or local exhaust systems. Maintain negative pressure work zones if possible
Respiratory Protection: Wear approved masks if exposure to vapors and aerosols is likely, especially in areas with poor ventilation
Hand and Eye Protection: Use chemical-resistant gloves (like nitrile, neoprene, or rubber) and splash-proof goggles for routine handling
Skin and Body Protection: Long sleeve shirts, pants, and closed-toe shoes can stave off accidental splashes and drips
Hygienic Practices: Wash hands and exposed skin areas after finished work, and before eating, drinking, or smoking
Physical State: Liquid at room temperature
Color: Colourless to pale yellow, depending on grade and concentration
Odor: Low, somewhat sweetish
pH (diluted): Typically between 6 and 8 in aqueous solution
Boiling Point: Typically exceeds 100°C
Solubility in Water: Fully dispersible
Vapor Pressure: Very low, but not negligible
Density: Commonly lies close to 1 g/cm³
Viscosity: Medium to high, becoming thicker with increasing ethoxylate chain length
Chemical Stability: Stable at ordinary temperature and pressure, as long as strong acids, oxidizers, and bases are not present
Hazardous Reactions: Incompatible with strong oxidizers, strong acids, and alkaline materials; risk of releasing nonylphenol or ethylene oxide under certain conditions
Decomposition Products: Possible release of nonylphenol, carbon oxides, aldehydes, and hydrocarbons if subjected to intense heat or combustion
Acute Toxicity: Moderate oral and dermal toxicity in laboratory animals, with typical symptoms like stomach pain, diarrhea, mild CNS symptoms if exposed in high quantity
Skin and Eye Irritation: Causes burning, redness, and sometimes swelling especially with repeated or prolonged skin exposure
Chronic Toxicity: Estrogenic activity in aquatic species has been well-documented, with lingering impact on reproductive health of affected organisms. Ongoing work investigates possible human hormonal disruption for long-term, high-level contact
Sensitization: Low but not negligible risk for allergic reactions stemming from repeated contact with undiluted material
Aquatic Toxicity: Acute and chronic toxic effects in fish, invertebrates, and algae—minute concentrations sometimes cause behavioral and reproductive harm
Persistence and Bioaccumulation: Stubborn resistance to rapid breakdown, leading to gradual buildup in sediments and aquatic life cycles
Degradability: Only slowly biodegradable. Outlawed in some regions based on its tendency to accumulate in natural waters and soils
Other Environmental Concerns: Breakdown products like nonylphenol often possess greater toxicity and persist longer than parent compounds
Waste Management: Collect residue and contaminated materials for incineration at approved waste handling facilities. Never dump even small amounts in household sewage, storm water, or regular trash
Container Disposal: Rinse triple with plenty of water, then send to recycling centers or hazardous waste contractors. Improper disposal can contaminate water tables, harming communities and entire regions
Shipping Class: Not generally classified as a hazardous material for land, sea, or air shipment; rules may tighten pending regulatory or customer-driven restrictions
Transport Precautions: Keep containers capped, check for leaks, and ensure proper documentation accompanies each shipment. Clean up spills immediately, since even drops can cause slick surfaces and environmental risk
Regulation: Subject to chemical restrictions in the European Union for use in detergents and several other consumer goods due to aquatic toxicity concerns. Analysis in the United States continues regarding further restrictions. International agreements flag nonylphenol derivatives as substances of very high concern
Worker Safety: Occupational exposure guidelines exist for both nonylphenol and ethylene oxide components in major jurisdictions
Reporting: Use and discharge into water often require regulatory notification
