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Substance Name: Dioctyl Phthalate
Chemical Formula: C24H38O4
Other Names: Bis(2-ethylhexyl) phthalate, DEHP
Common Uses: Softening plastics, especially PVC; found in vinyl flooring, medical devices, shower curtains, upholstery, and wire insulation. Recognized for its flexibility benefits in consumer products.
GHS Classifications: Eye irritant, hazardous to aquatic life with long-lasting effects
Main Health Concerns: Respiratory irritation, suspected reproductive toxin, potential impact on endocrine systems with chronic exposure
Environmental Risks: Persistent in soil and water, toxic to aquatic organisms, risk of bioaccumulation
Main Ingredient: Dioctyl Phthalate (DEHP) – typically above 99% purity in industrial batches
Impurities: Trace phthalates or byproducts from manufacturing, though levels tend to fall below one percent and rarely cause concern for acute toxicity
Eye Contact: Rinse gently with water for several minutes. Seek medical advice if irritation persists.
Skin Contact: Wash thoroughly with soap. Remove contaminated clothing. Seek medical advice if symptoms arise.
Inhalation: Move to fresh air. Monitor for symptoms such as coughing or dizziness.
Ingestion: Rinse mouth. Get medical attention if feeling unwell.
Suitable Media: Foam, dry chemical powders, carbon dioxide
Hazardous Combustion Byproducts: Carbon monoxide, carbon dioxide fumes, various hydrocarbons
Advice for Firefighters: Wear self-contained respiratory protection, protective clothing. Runoff may pollute water sources.
Personal Protections: Gloves, goggles, chemical-resistant clothing where splashing risk persists
Spill Response: Contain leaks with absorbent material like earth or sand; avoid letting run-off enter drains
Clean-up Guidance: Shovel absorbed material into suitable containers for proper disposal; ensure ventilation during clean-up
Environmental Precautions: Prevent entry to waterways; alert environmental authorities for significant spills
Storage Conditions: Keep in tightly closed containers; store in a cool, dry place away from sunlight, food, or oxidizing chemicals
Handling Tips: Avoid skin or eye contact, inhaling fumes or mist; keep containers upright and properly labeled
Engineering Measures: Use exhaust ventilation in work areas that generate dust or vapor; install eye wash stations
Personal Equipment: Nitrile or chemical-resistant gloves, chemical splash goggles, long sleeves, and in some cases, face shields
Respiratory Protection: Use particulate or vapor respirators in poorly ventilated spaces or when handling large volumes
Exposure Limits: Occupational exposures sometimes regulated at 5 mg/m³ for inhalable dust or vapor, depending on jurisdiction
Appearance: Oily, colorless to pale yellow transparent liquid
Odor: Mild, faintly aromatic smell
Boiling Point: Roughly 385°C
Melting Point: -50°C or lower
Solubility: Negligible in water, high in organic solvents
Vapor Pressure: Low at room temperature
Chemical Stability: Remains stable under normal handling and storage
Conditions to Avoid: Strong oxidizers, excessive heat, direct sunlight
Potential Reactions: Can decompose when overheated, releasing harmful gases
Incompatible Materials: Strong acids, strong alkalis, oxidizing agents
Routes of Exposure: Inhalation, skin contact, accidental ingestion
Acute Effects: May cause mild eye and skin irritation
Chronic Effects: Linked with reproductive harm in animal studies; some studies point to changes in hormone levels after repeated long-term exposure
Cancer Risk: Listed as a possible human carcinogen by some authorities, but conclusive evidence remains debated
Symptoms of Overexposure: Headache, nausea, dizziness, irritation to nose or throat
Persistence: Breaks down slowly in the environment
Bioaccumulation Potential: Strong tendency to accumulate in aquatic organisms
Aquatic Toxicity: Harmful to fish, invertebrates, and plant life even at low concentrations
Mobility: Low water solubility, but can still spread far in soils and sediments
Disposal Guidance: Treat as hazardous waste; send to incineration or approved chemical disposal site
Container Treatment: Recycle or dispose of empty containers through licensed handlers; never reuse containers for food or drink
Local Compliance: Disposal routines should line up with national and local rules limiting phthalate emissions
UN Classification: Not listed as a hazardous good under most transport guidelines, but consult regional transport codes
Packaging: Use robust, sealed containers to reduce leaks or spills during shipment
Transport Risk: Main issues come from large-scale spills or container failure; route planning to avoid water bodies is common practice
Regulatory Status: Banned from toys and childcare items for children under three years in many countries; regulated in drinking water and industrial emissions
Reporting Requirements: Some regions require tracking of production, import, and use above certain quantities; workplace exposure limits enforced in much of North America and Europe
Labeling: Hazard labels required on packaging in most industrial settings; Safety training strongly encouraged for regular users
Consumer Guidance: Safer alternatives recommended for products with direct and frequent human contact, particularly for children
