2-Ethylhexanoic Acid (2-EHA) | Industrial Grade | CAS 149-57-5

2-Ethyl hexanoic acid (CAS 149-57-5) is a branched-chain fatty acid widely used as an intermediate in the synthesis of metal soaps, driers, and stabilizers across coatings, plastics, and lubricant manufacturing. BASTONE manufactures reagent-grade 2-EHA at ≥99.5% purity with full batch documentation through its production and export platform, Zhejiang Bastone Technology Co., Ltd.

CAS No. 149-57-5
Packaging: 200L Drum, IBC or ISOTANK
New production line in China, offering competitive pricing
In production since August 2024; Capacity 25,000 MT/year
Appearance and overall quality outperform BASF 2-EHA

Description

2-Ethyl hexanoic acid is a C8 branched carboxylic acid produced via the Koch reaction or Guerbet-type synthesis from 2-ethyl-1-hexanol oxidation. At room temperature, the material presents as a colorless transparent oily liquid with characteristic fatty acid odor. The branched carbon backbone is the defining structural feature — it prevents close molecular packing, which translates directly into lower freezing points and better solubility of derived metal salts versus straight-chain C8 acids.

The purity specification of ≥99.5 wt% is the practical threshold for metal soap synthesis. Residual impurities above that level introduce off-color metal carboxylates and interfere with drier activity in alkyd-based coatings. The acid value of ≥385.0 mgKOH/g confirms the stoichiometric integrity of the acid functionality — buyers formulating cobalt, manganese, or zirconium driers rely on accurate acid value to calculate metal loading ratios precisely. A low Hazen chroma of ≤10 ensures the colorless appearance required for pale or white coating systems where pigmentation would be corrupted by a yellowish carrier.

Water content held at ≤0.10% matters specifically for esterification and salt-forming reactions. Moisture above 0.15% interferes with saponification kinetics and can cause batch inconsistency in continuous drier production. BASTONE production meets the tightest commercial specifications routinely required by coatings chemical manufacturers in Europe and East Asia.

BASTONE manufactures 2-ethyl hexanoic acid in-house, with full control over raw material selection, reaction parameters, and purification stages. Each production batch is backed by a Certificate of Analysis covering purity, acid value, chroma, and water content — the four parameters procurement teams need to accept or reject incoming material without repeat in-house testing. In-house manufacturing gives BASTONE tighter consistency across batches and shorter lead times than third-party sourced material.

Specifications

Purity

≥99.5%

Acid Value

≥387.0 mgKOH/g

Hazen Color Number (Pt-Co)

≤10

Factory and Activities

2-Ethyl Hexanoic Acid | Industrial Grade | CAS 149-57-5 - BASTONE Petrochem

Specifications

2-Ethyl Hexanoic Acid
2-Ethyl Hexanoic Acid (CAS 149-57-5) — ≥99.5% purity, industrial grade, export-ready packaging.

General Information

Parameter Detail
Product Name 2-Ethyl Hexanoic Acid
CAS Number 149-57-5
Molecular Formula C₈H₁₆O₂
Appearance Colorless transparent oily liquid
Manufacturer Zhejiang Bastone Technology Co., Ltd

Technical Properties

Parameter Specification Unit
Purity ≥99.5 wt%
Chroma (Hazen/APHA) ≤10
Acid Value ≥385.0 mgKOH/g
Water Content ≤0.10 wt%

Storage Conditions

Parameter Requirement
Storage Temperature Cool, dry conditions
Container Type Sealed, compatible with carboxylic acids

Applications

The largest single end-use for 2-ethyl hexanoic acid is the production of metal carboxylate driers for coatings and printing inks. Cobalt 2-ethylhexanoate and zirconium 2-ethylhexanoate are primary and secondary driers, respectively, in alkyd, polyurethane alkyd, and linseed oil-based coatings. The branched structure gives derived metal soaps high solubility in hydrocarbon solvents and resins, which is why the straight-chain octanoic acid alternative rarely substitutes in high-performance drier formulations. The ≥385.0 mgKOH/g acid value ensures that formulators can hit target metal concentrations without excess acid carryover into the final coating.

In unsaturated polyester resin manufacturing, 2-EHA acts as a promoter in peroxide cure systems, often working alongside cobalt octoate accelerators. The acid both activates the cobalt catalyst and participates in the curing network at the interface of the resin matrix. Resin producers sourcing for this application specify tight chroma limits — the ≤10 Hazen grade BASTONE supplies meets the pale resin requirements without additional bleaching steps.

PVC heat stabilizer production is a growing demand segment within China's plastics processing sector. 2-Ethyl hexanoic acid serves as the acid component in the synthesis of calcium-zinc and barium-zinc mixed metal stabilizers, replacing older cadmium and lead systems. The high purity grade minimizes side reactions during saponification and gives stabilizer producers reproducible product color and thermal performance in the final PVC compound.

Lubricant additive synthesis represents a fourth significant application. The acid reacts with alcohols or polyols to form ester-based synthetic lubricant base stocks and cooling lubricant additives. The branched structure of the ester products delivers lower pour points and better oxidative stability than analogous straight-chain esters — a direct functional benefit that originates in the molecular architecture of 2-EHA.

Applications of 2-Ethyl Hexanoic Acid
Used in cobalt, manganese, and zirconium drier production for alkyd coatings and industrial paint systems.

Why Partner with BASTONE

BASTONE Logistics and Sourcing
Full COA documentation — purity, acid value, chroma, and water content — with every export shipment.

As a direct manufacturer of 2-Ethyl Hexanoic Acid, BASTONE Petrochem offers unparalleled quality control and supply chain stability. When a procurement team sources a chemical intermediate like 2-EHA through a pure trading house, technical queries typically reach a dead end. By partnering directly with BASTONE, our customers benefit from factory-direct pricing and an R&D-driven technical team that deeply understands production processes, purity control points, and the formulation logic behind your specification requirements.

Documentation quality is a recurring pain point in international chemical sourcing. As the manufacturer, BASTONE issues precise COA documents aligned with international buyer expectations: each batch COA identifies the four key analytical parameters against the stated specification, and the export documentation package includes the Material Safety Data Sheet in English, packing list, commercial invoice, and bill of lading in standard formats accepted by European and North American customs authorities. Buyers who have dealt with documentation errors from intermediaries understand why this matters operationally.

BASTONE's global export division handles direct-from-factory shipments on flexible trade terms including FOB Ningbo, CFR, and CIF. Minimum order quantities are negotiable depending on container configuration and buyer requirements. Factory sample quantities are readily available for qualification testing before committing to commercial volumes.

Manufacturing & Logistics

Parameter Detail
Manufacturer Zhejiang Bastone Technology Co., Ltd
Facility Location China
Packaging IBC (1000 L), drum (200 L), or per buyer requirement
Port of Loading Ningbo, China
Trade Terms FOB, CFR, CIF
Documentation COA, MSDS (English), commercial invoice, packing list, B/L
Sample Availability Yes — contact for sample request
Contact [email protected]

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