Diisobutyl Adipate (DIBA)

   CAS No.: 141-04-8
   Synonyms / IUPAC Name: Diisobutyl adipate; Hexanedioic acid, bis(2-methylpropyl) ester
   Molecular Formula: C₁₄H₂₆O₄
   Molecular Weight: ~258.35 g/mol
   Appearance: Colourless clear liquid

Physicochemical Properties (Typical)

• Melting Point: ~–17 °C
• Boiling Point: ~293 °C at 760 mmHg
• Density: ~0.950–0.956 g/cm³ at 20–25 °C
• Refractive Index: n²⁰ᴰ = 1.428–1.432
• Solubility in Water: Very low (~5.6 mg/L at 25 °C)
• Flash Point: >230 °F (~112–120 °C)

Purity & Quality Standards

• Typical Purity: ≥99.0% (GC)
• Appearance: Clear liquid, free from visible particulates or haze.
• Specification Indicators: Acid value and moisture content should meet industrial-grade standards.
• Storage Recommendation: Store sealed in a cool, dry, well-ventilated area; protect from strong oxidisers and prolonged high temperatures.

Applications / Uses

• Functions as a plasticizer in polymer systems (films, sheets, synthetic leather) to enhance flexibility and processing performance at low temperatures.
• Employed as an emollient, solvent, or skin-conditioning agent in cosmetics and personal-care products, offering a light, non-greasy feel.
• Used as a solvent or intermediate in coatings, inks, adhesives, and specialty chemical formulations.
• Applicable in emulsion or hydro-alcoholic systems where ester-based oils provide functional performance and compatibility.

Safety & Handling

• Flammability: Combustible liquid; vapours may form flammable mixtures under certain conditions.
• Health Hazards:
• Inhalation: High vapour exposure may cause dizziness or central nervous system effects.
• Skin Contact: Prolonged or repeated exposure may cause mild irritation.
• Eye Contact: May cause irritation.
• Precautions:
• Use in well-ventilated areas or under local exhaust equipment.
• Wear protective gloves, goggles/face shield, and suitable protective clothing.
• Avoid heat, sparks, ignition sources, and contact with strong oxidisers.
• Reactivity / Incompatibilities: Avoid strong oxidising agents, strong acids/bases; may decompose on high heat releasing hazardous gases.

Packaging & Storage

• Packaging: Supplied in sealed solvent-compatible containers (e.g., industrial drums or barrels) suitable for ester-based materials.
• Storage Conditions: Store in cool (<30 °C), dry, well-ventilated area, away from direct sunlight, moisture, and ignition sources; keep container tightly closed when not in use.
• Shelf Life: Stable under recommended storage conditions; inspect container integrity and product appearance if stored for extended periods before use.