Description

Rac trans-9,10-Epoxystearic Acid is a versatile fatty acid derivative characterized by an epoxide ring on its C9-C10 carbon chain. This functional group makes it a valuable intermediate for synthesizing polymers, plasticizers, and specialty surfactants. It is particularly sought after by manufacturers in the polymer, lubricant, and fine chemical industries for its bifunctional reactivity. The compound is supplied with a CAS registry number of 13980-07-9.

Application

• Polymer Modification: Acts as a reactive monomer or cross-linking agent in the production of epoxy resins, polyesters, and polyurethanes.
• Plasticizer & Stabilizer Synthesis: Serves as a key raw material for manufacturing bio-based plasticizers and thermal stabilizers for PVC and other polymers.
• Lubricant & Grease Formulation: Used to synthesize ester-based lubricants and additives that enhance oxidative stability and lubricity.
• Surfactant & Emulsifier Production: Intermediate for creating non-ionic surfactants and emulsifiers with good biodegradability profiles.
• Fine Chemical Intermediate: A crucial building block in organic synthesis for pharmaceuticals, agrochemicals, and cosmetic ingredients.
• Coating & Adhesive Formulations: Imparts flexibility and adhesion properties in specialty coating and adhesive systems.

Basic Information

Product Name	Rac trans-9,10-Epoxystearic Acid
CAS No.	13980-07-9
Molecular Formula	C₁₈H₃₄O₃
Molecular Weight	298.46 g/mol
Synonyms	9,10-Epoxyoctadecanoic Acid; trans-9,10-Epoxystearic Acid; (±)-9,10-Epoxystearic Acid; 9,10-Epoxy-18:0; Octadecanoic acid, 9,10-epoxy-; 9,10-Epoxyoctadecanoic acid (mixed isomers); Racemic 9,10-epoxystearic acid; Epoxidized stearic acid
EINECS	237-775-8

Quality Control

Our Rac trans-9,10-Epoxystearic Acid is manufactured under a strict quality management system. Each batch undergoes comprehensive analytical testing, including assay, epoxide content, and impurity profile analysis, to ensure it meets precise specifications. A Certificate of Analysis (COA) documenting purity, physical properties, and test results is provided with every shipment to guarantee traceability and compliance.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). Keep away from strong oxidizing agents, strong bases, and heat sources. The product is light-sensitive and should be stored away from direct light exposure.

Specification

Item	Specification
Appearance	White to off-white waxy solid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Epoxide Content	≥ 5.2 meq/g
Acid Value	180 - 195 mg KOH/g
Iodine Value	≤ 5.0 g I₂/100g
Melting Point	55 - 65 °C
Heavy Metals (as Pb)	≤ 10 ppm
Loss on Drying	≤ 0.5%

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.