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Chemical Name: Dicyclohexyl Phthalate Synonyms: DCHP Chemical Formula: C20H26O4 CAS Number: 84-61-7 Physical Description: Clear, colorless to pale-yellow oily liquid Common Applications: Used as a plasticizer in plastics manufacturing, found in flexible PVC products, and sometimes in adhesives or coatings Odor: Faint, mild aromatic
Major Concerns: DCHP may cause eye, skin, and respiratory irritation on direct contact, and overexposure can affect organs in the long term Routes of Exposure: Inhalation, skin contact, eye contact, ingestion Potential Health Effects: Direct skin exposure may cause redness and itching; accidental eye contact can bring about minor irritation; inhaling vapors may leave you with cough or throat discomfort Carcinogenicity Status: Not listed as carcinogenic by major regulatory agencies, but ongoing health research encourages caution Environmental Hazards: Possible aquatic toxicity, so spills near surface water need careful handling
Main Ingredient: Dicyclohexyl Phthalate—often present at concentrations above 99% in pure form Impurities: Trace phthalate congeners or related organic residues can be found in commercial grades
Eye Exposure: Flush eyes with running water for at least fifteen minutes; removing contact lenses may help Skin Contact: Wash clothing and rinse skin thoroughly with soap and water; medical attention if irritation lasts Inhalation: Seek fresh air and rest; persistent symptoms need professional evaluation Ingestion: Rinse mouth, do not induce vomiting, and seek medical advice if large amounts are swallowed
Suitable Extinguishing Media: Carbon dioxide, dry chemical, foam, or water spray emit the best results Combustion Hazards: Burning can release carbon monoxide, carbon dioxide, and other phthalate decomposition byproducts Personal Protective Equipment: Full protective gear, self-contained breathing apparatus for responders Special Hazards: Heated product may form irritating or toxic vapors
Containment: Diking with non-combustible absorbent (sand, earth) tempers spread Spill Response: Collect residue with suitable tools, transfer to proper disposal container; ventilate area to avoid vapor buildup Precautions: Gloves and goggles shield from skin and eye contact; avoid inhaling aerosols Environmental Protection: Prevent substance from leaking into drainage systems or natural water sources
Handling Guidance: Use in well-ventilated spaces; avoid contact with skin, eyes, or clothing Storage Conditions: Tight-sealed containers in cool, dry, shaded locations, away from incompatible chemicals like strong oxidizers Hygiene Measures: Wash hands after handling; keep food and drink away from storage and work areas
Workplace Controls: Local exhaust or fume hoods reduce airborne concentrations, especially during mixing or handling Personal Protection: Chemical-resistant gloves (like nitrile), goggles or face shield, lab coat or aprons keep exposure to a minimum Respiratory Protection: In poorly ventilated areas, use properly-fitted respirators Exposure Limits: Occupational safety agencies have not set specific exposure thresholds, but general phthalate recommendations suggest keeping airborne concentration as low as possible
Appearance: Clear, viscous liquid Boiling Point: About 400°C Melting Point: Near -18°C Vapor Pressure: Very low at room temperature Solubility: Practically insoluble in water, soluble in organic solvents Odor Threshold: Typically undetectable at relevant concentrations Density: Around 1.07–1.08 g/cm3
Chemical Stability: Remains stable under standard conditions—temperatures below 50°C, away from sunlight Incompatible Materials: Strong acids, strong oxidizers Hazardous Decomposition Products: High temperature can release flammable and toxic gases including carbon monoxide and phthalic acid derivatives Polymerization: Not expected under normal storage and use
Acute Toxicity: Low acute oral and dermal toxicity; animal studies show mild symptoms at high doses Chronic Exposure: Prolonged skin exposure may cause dermatitis; repeated inhalation of mist may affect respiratory function, as with other phthalates Sensitization: No strong evidence for allergic reactions, but repeated exposure rarely causes mild skin sensitization in sensitive individuals Reproductive Toxicity: Some phthalates in the same category have shown reproductive effects in animal trials, so limiting exposure minimizes risks
Environmental Fate: DCHP breaks down slowly in soil and water; tends to persist in sediments Bioaccumulation: Evidence suggests moderate potential to accumulate in aquatic organisms Toxicity to Organisms: May affect fish and invertebrates if released in quantity, so care is needed to avoid environmental contamination Mobility: Limited mobility in the environment due to low water solubility
Waste Management: Dispose of through approved hazardous waste handlers; avoid dumping into drains, waterways Recycling/Reuse: Unused DCHP typically returns to chemical supply chain if pure; contaminated mixtures demand incineration or landfill by licensed professionals
Shipping Classification: Not classified as dangerous under standard transport regulations Precautions for Transport: Undamaged containers, secured, upright packaging; keep away from incompatible cargo
Global Regulations: DCHP does not fall under strict international chemical controls, but some regions restrict phthalates in consumer products, especially toys, food packaging, and childcare items Worker Safety: Occupational health agencies recommend using controls and good hygiene practices in settings where DCHP gets handled regularly
