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Material Safety Data Sheet: Diisooctyl Adipate

Identification

Product Name: Diisooctyl Adipate
Synonyms: Bis(2-ethylhexyl) adipate
Chemical Formula: C22H42O4
CAS Number: 103-23-1
Intended Use: Commonly works as a plasticizer in production of polymers such as PVC, used in food packaging, toys, and electrical cables.
Manufacturer Contact Information: Includes company address, emergency phone number, and email for technical support or emergencies, aligning with best practices to assist workers quickly.

Hazard Identification

GHS Classification: Not classified as hazardous according to OSHA and EU standards.
Routes of Exposure: Eye and skin contact, inhalation, ingestion.
Health Hazards: Mild eye or skin irritation possible with direct exposure; long-term hazard data limited, though high concentrations over extended periods could affect liver in animal studies.
Environmental Hazards: May have some risk to aquatic organisms after spills; doesn’t bioaccumulate significantly but doesn’t break down quickly in water.
Label Elements: No signal word; precautionary statements include avoiding contact with eyes and using with adequate ventilation.

Composition / Information on Ingredients

Chemical Name: Diisooctyl Adipate
Common Name: Bis(2-ethylhexyl) adipate
Percentage: Over 99% by weight
Impurities: Trace esters or alcohols under 1%, commonly introduced during manufacturing, though these rarely move above regulatory reporting thresholds.
Additives: None typically added.

First Aid Measures

Inhalation: Remove person to fresh air. If breathing stops, start artificial respiration. Seek medical attention if symptoms persist.
Skin Contact: Wash affected area with soap and water. Remove contaminated clothing. Get medical attention if irritation continues.
Eye Contact: Rinse cautiously with water for several minutes. Remove contact lenses if easily possible. Get medical attention for persistent redness.
Ingestion: Rinse mouth with water. Do not induce vomiting. Seek medical assistance for large amounts or if symptoms start.

Fire-Fighting Measures

Suitable Extinguishing Media: Foam, dry chemical, carbon dioxide, or water spray can suppress fires.
Unsuitable Media: Direct water spray may spread burning liquid.
Risks During Fire: Decomposes under intense heat, releasing oxides of carbon. Vapors heavier than air can travel along surfaces and ignite at a distance.
Protective Equipment: Firefighters should wear self-contained breathing apparatus and full turn-out gear.
Hazardous Combustion Products: Carbon monoxide, carbon dioxide, possible small amounts of unidentified hydrocarbons.

Accidental Release Measures

Personal Precautions: Avoid skin and eye contact, wear protective gloves, goggles, and long sleeves.
Environmental Precautions: Prevent entry into sewers and waterways. Use absorbent material for small spills. Inform authorities if spill threatens groundwater or surface water.
Clean-Up Methods: Absorb with sand or earth. Place in containers for proper disposal. Ventilate area and wash spill site after pickup is complete.
Emergency Procedures: Isolate area to keep unnecessary personnel away until clean-up ends.

Handling and Storage

Safe Handling Advice: Minimize splashes and vapor formation. Use only with adequate ventilation. Avoid unnecessary exposure.
Storage Requirements: Keep containers tightly closed, stored in cool, dry, well-ventilated areas away from direct sunlight, ignition sources, and incompatible materials.
Incompatible Materials: Strong oxidizing agents, strong acids.
Special Precautions: Use appropriate secondary containment to prevent leaks from reaching the environment.

Exposure Controls and Personal Protection

Occupational Exposure Limits: No established OSHA or ACGIH exposure limits for this chemical.
Engineering Controls: Use local exhaust ventilation for processes that generate mist or vapor.
Personal Protective Equipment: Chemical-resistant gloves, safety goggles or face shield, protective clothing, and respiratory protection if ventilation proves inadequate.
Hygiene Measures: Wash face, hands, and exposed skin after handling; remove contaminated clothing and wash before reuse.

Physical and Chemical Properties

Appearance: Clear, colorless to pale yellow oily liquid
Odor: Mild, ester-like
Molecular Weight: 370.6 g/mol
Melting Point: -67°C (-89°F)
Boiling Point: 214°C (417°F) at 5 mmHg
Flash Point: About 224°C (435°F)
Solubility: Insoluble in water, soluble in organic solvents
Vapor Pressure: Very low at room temperature
Density: Approximately 0.924 g/cm³ at 20°C
Viscosity: 12 - 13 mPa.s at 20°C

Stability and Reactivity

Stability: Chemically stable under normal temperatures and pressures.
Conditions to Avoid: Elevated temperatures, open flames, prolonged exposure to light.
Hazardous Reactions: No dangerously reactive properties known when used as intended.
Incompatible Materials: Strong oxidizers and acids may trigger hazardous reactions.
Decomposition Products: Mainly carbon monoxide, carbon dioxide, and potentially irritating aldehydes and hydrocarbons during combustion.

Toxicological Information

Acute Toxicity: Low acute toxicity from oral, dermal, and inhalation exposure. LD50 in rats generally exceeds 5,000 mg/kg.
Skin Corrosion/Irritation: Mild, short-lived irritation may follow large exposures, but product is not a sensitizer in normal settings.
Eye Damage/Irritation: Can cause slight irritation, often reversible.
Chronic Effects: Liver enlargement observed in some animal studies with high doses; relevance for workplace exposure remains unclear.
Carcinogenicity: Not classified as a human carcinogen by IARC, NTP, or OSHA.
Reproductive Toxicity: No reliable evidence showing significant reproductive or developmental harm in realistic workplace conditions.

Ecological Information

Ecotoxicity: Low aquatic toxicity to fish and invertebrates, but product floats on water and coats surfaces, reducing oxygen transfer.
Persistence and Degradability: Degrades slowly in environment – can linger in sediment and soils, though does not bioaccumulate to a major extent.
Bioaccumulation Potential: Expected to have low bioaccumulation based on log Kow values and metabolic breakdown.
Mobility in Soil: High due to low water solubility. Does not readily leach to groundwater.
Other Harmful Effects: Large spills harm aquatic life due to physical coating; regular chemical hygiene practices help minimize impact.

Disposal Considerations

Waste Treatment Methods: Incinerate in licensed facility according to local, state, and federal rules. Avoid discharge to sewers or surface water.
Container Disposal: Empty drums and containers can hold residue; triple rinse and puncture before recycling or disposal.
Special Precautions: Do not attempt to reuse packaging for food or personal items; keep disposal paperwork as required by regulatory bodies.

Transport Information

UN Number: Not regulated under UN, IMDG, or IATA codes.
Proper Shipping Name: Not classified as a dangerous good.
Transport Hazard Class: None assigned
Packing Group: None applicable
Environmental Hazards: Not a marine pollutant as per IMDG criteria, but transporters should prevent container leaks.
Special Precautions for User: Secure tightly, avoid rough handling or heat to prevent leaks.

Regulatory Information

TSCA Inventory: Listed
REACH Registration: Registered under European Union REACH regulations for import and use above one tonne per year.
OSHA: Not classed as hazardous under Hazard Communication Standard.
SARA Title III: Not listed as an Extremely Hazardous Substance; no specific threshold planning quantity.
California Prop 65: Not on list of chemicals known to cause cancer or reproductive harm.
Other National Inventories: CN, JP, KR, AU, NZ, PH inventories – listed.