ETHYLHEXOIC ACID

Ethylhexoic acid is a branched-chain carboxylic acid widely used as an intermediate in the production of metal salts, esters, lubricants, coatings, and specialty chemicals.
Ethylhexoic acid is valued for its hydrophobicity, low volatility, and ability to form stable metal carboxylates with excellent solubility in organic systems.
Ethylhexoic acid plays an important role in industrial catalysis, resin modification, and corrosion inhibition applications.

CAS Number: 149-57-5
EC Number: 205-743-6
Molecular Formula: C₈H₁₆O₂
Molecular Weight: 144.21 g/mol

Synonyms: Ethylhexoic Acid, 2-Ethylhexanoic Acid, Octanoic Acid (branched), 2-EHA, Ethylhexoic Acid, 2-Ethylhexanoic Acid, 2-Ethylhexanoate Acid, Isooctanoic Acid (common reference), Octanoic Acid Derivative (ethyl-substituted), Branched C8 Fatty Acid, C8 Branched Carboxylic Acid, Ethylhexanoic Acid Free Acid, 2-Ethylhexanoic Acid Free Acid, Ethylhexoic Acid Anhydrous, Ethylhexoic Acid Liquid, Ethylhexoic Acid Clear Liquid, Ethylhexoic Acid High Purity, Pure Ethylhexoic Acid, Extra-Pure Ethylhexoic Acid, Technical Grade Ethylhexoic Acid, Industrial Grade Ethylhexoic Acid, Reagent Grade Ethylhexoic Acid, Analytical Grade Ethylhexoic Acid, Ethylhexoic Acid Organic Acid, Ethylhexoic Acid Aliphatic Carboxylic Acid, Ethylhexoic Acid Branched Carboxylic Acid, Ethylhexoic Acid Fatty Acid, Ethylhexoic Acid Short-Chain Fatty Acid (branched), Ethylhexoic Acid Metal Salt Precursor, Ethylhexoic Acid Soap Intermediate, Ethylhexoic Acid Esterification Feedstock, Ethylhexoic Acid Chemical Intermediate, Ethylhexoic Acid Synthesis Intermediate, Ethylhexoic Acid Fine Chemical, Ethylhexoic Acid Specialty Chemical, Ethylhexoic Acid Industrial Chemical, Ethylhexoic Acid Raw Material, Ethylhexoic Acid Process Chemical, Ethylhexoic Acid Coatings Intermediate, Ethylhexoic Acid Paint Drier Acid, Ethylhexoic Acid Metal Drier Component, Ethylhexoic Acid Cobalt Salt Precursor, Ethylhexoic Acid Zinc Salt Precursor, Ethylhexoic Acid Calcium Salt Precursor, Ethylhexoic Acid Manganese Salt Precursor, Ethylhexoic Acid Metal Soap Former, Ethylhexoic Acid Lubricant Additive Intermediate

APPLICATIONS

Ethylhexoic acid is used in the production of metal soaps.
Ethylhexoic acid forms salts with calcium, zinc, cobalt, and manganese.
Ethylhexoic acid-derived metal salts are used as driers and catalysts.

Ethylhexoic acid is applied in coatings and paints.
Ethylhexoic acid-based metal carboxylates accelerate oxidative curing.
Ethylhexoic acid improves film formation and drying performance.

Ethylhexoic acid is used in lubricant formulations.
Ethylhexoic acid improves corrosion inhibition properties.
Ethylhexoic acid enhances compatibility with base oils.

Ethylhexoic acid is employed in plasticizer and ester synthesis.
Ethylhexoic acid reacts with alcohols to form functional esters.
Ethylhexoic acid esters improve flexibility and durability of polymers.

Ethylhexoic acid is used in industrial catalysis.
Ethylhexoic acid acts as a ligand in organometallic catalysts.
Ethylhexoic acid supports controlled reaction kinetics.

Ethylhexoic acid is applied in chemical manufacturing.
Ethylhexoic acid serves as a hydrophobic acid modifier.
Ethylhexoic acid improves solubility of active ingredients in organic media.

Ethylhexoic acid is used as an intermediate in chemical manufacturing.
Ethylhexoic acid supports synthesis of metal salts and esters.

Ethylhexoic acid is used in production of metal soaps.
Ethylhexoic acid improves solubility of metal ions in organic systems.

Ethylhexoic acid is used in paint drier formulations.
Ethylhexoic acid accelerates oxidative curing of alkyd coatings.

Ethylhexoic acid is used in alkyd resin systems.
Ethylhexoic acid enhances drying speed of solvent-based paints.

Ethylhexoic acid is used in varnish formulations.
Ethylhexoic acid improves film hardness development.

Ethylhexoic acid is used in automotive coatings.
Ethylhexoic acid supports rapid ambient curing performance.

Ethylhexoic acid is used in industrial coatings.
Ethylhexoic acid improves adhesion and surface wetting.

Ethylhexoic acid is used in corrosion inhibitor formulations.
Ethylhexoic acid enhances protective film formation on metal surfaces.

Ethylhexoic acid is used in lubricant additive systems.
Ethylhexoic acid improves corrosion protection and lubricity.

Ethylhexoic acid is used in metalworking fluids.
Ethylhexoic acid enhances rust inhibition performance.

Ethylhexoic acid is used in grease manufacturing.
Ethylhexoic acid improves soap thickener efficiency.

Ethylhexoic acid is used in PVC stabilizer systems.
Ethylhexoic acid enhances thermal stability of polymer formulations.

Ethylhexoic acid is used in plasticizer production.
Ethylhexoic acid improves flexibility of polymer materials.

Ethylhexoic acid is used in adhesive formulations.
Ethylhexoic acid enhances substrate wetting and bonding.

Ethylhexoic acid is used in sealant formulations.
Ethylhexoic acid improves flow and application properties.

Ethylhexoic acid is used in catalyst preparation.
Ethylhexoic acid acts as a ligand for metal-based catalysts.

Ethylhexoic acid is used in oilfield chemical formulations.
Ethylhexoic acid improves performance of drilling and completion fluids.

Ethylhexoic acid is used in fuel additive systems.
Ethylhexoic acid enhances fuel stability and combustion behavior.

Ethylhexoic acid is used in specialty chemical synthesis.
Ethylhexoic acid enables controlled reactivity in organic processes.

DESCRIPTION

Ethylhexoic acid is a clear, colorless to pale yellow liquid.
Ethylhexoic acid has a characteristic mild fatty acid odor.
Ethylhexoic acid is a branched-chain monocarboxylic acid.

Ethylhexoic acid is insoluble in water but soluble in most organic solvents.
Ethylhexoic acid exhibits good thermal and oxidative stability.
Ethylhexoic acid shows reduced crystallization tendency compared to linear acids.

Ethylhexoic acid readily forms salts and esters.
Ethylhexoic acid-derived compounds display enhanced solubility and stability.
Ethylhexoic acid is preferred where low volatility is required.

Ethylhexoic acid is chemically stable under normal storage conditions.
Ethylhexoic acid should be protected from strong oxidizing agents.
Ethylhexoic acid is handled safely using standard industrial precautions.

Ethylhexoic acid is an organic carboxylic acid with the chemical formula C₈H₁₆O₂.
Ethylhexoic acid is also known as 2-ethylhexanoic acid.
Ethylhexoic acid appears as a colorless to pale yellow liquid.

Ethylhexoic acid has a mild characteristic odor.
Ethylhexoic acid is insoluble in water and soluble in organic solvents.
Ethylhexoic acid exhibits good thermal stability under normal conditions.

Ethylhexoic acid shows low volatility compared to short-chain fatty acids.
Ethylhexoic acid forms stable metal salts with various cations.
Ethylhexoic acid demonstrates good compatibility with oils and resins.

Ethylhexoic acid is widely used as an industrial intermediate.
Ethylhexoic acid plays a key role in coatings and polymer industries.
Ethylhexoic acid supports efficient formulation performance.

Ethylhexoic acid should be stored in tightly closed containers.
Ethylhexoic acid should be kept away from strong oxidizing agents.
Ethylhexoic acid is valued for its versatility, stability, and industrial utility.

PROPERTIES

Chemical Formula: C₈H₁₆O₂
Molecular Weight: 144.21 g/mol
Appearance: Clear, colorless to pale yellow liquid
Odor: Mild fatty acid odor
Density: ~0.905–0.910 g/cm³ at 20°C
Melting Point: ~−10°C
Boiling Point: ~228–230°C
Vapor Pressure: ~0.02 hPa at 20°C
Solubility in Water: ~0.6–1.0 g/L at 20°C
Solubility in Organic Solvents: Miscible with alcohols, esters, and hydrocarbons
pKa: ~4.8
Viscosity: Low to moderate
Flash Point: ~110–115°C (closed cup)
Refractive Index: ~1.424 at 20°C
Thermal Stability: High under normal processing conditions
Chemical Reactivity: Reacts with bases to form salts; esterifies with alcohols
Storage Temperature: Store at ambient temperature

FIRST AID

Inhalation:
Move to fresh air if vapors are inhaled.
Seek medical attention if irritation persists.

Skin Contact:
Wash with soap and water.
Remove contaminated clothing.

Eye Contact:
Rinse with water for at least 15 minutes.
Seek medical attention if discomfort continues.

Ingestion:
Rinse mouth and drink water.
Seek medical advice if large amounts are ingested.

Note to Physicians:
Treat symptomatically.

HANDLING AND STORAGE

Handling:
Use protective gloves and eye protection.
Avoid prolonged skin contact.
Ensure adequate ventilation during handling.

Avoidance:
Avoid strong oxidizing agents.
Avoid excessive heat and open flames.

Spill Procedures:
Absorb with inert material and clean area thoroughly.
Dispose of according to local regulations.

Storage:
Store in tightly closed containers.
Keep in a cool, dry, well-ventilated area.
Protect from heat and direct sunlight.