Description

trans-Crotonic Acid CAS NO 3724-65-0 is an unsaturated monocarboxylic acid characterized by its trans-configuration, serving as a versatile chemical intermediate and monomer. Its value lies in its ability to introduce reactive vinyl and carboxylic acid functionalities into polymers and fine chemicals, enabling the synthesis of materials with tailored properties. This product is essential for manufacturers in the polymer, agrochemical, and pharmaceutical industries seeking to develop coatings, adhesives, and active pharmaceutical ingredients (APIs).

Application

• Polymer Synthesis: Key monomer for producing specialty polymers, including poly(crotonic acid) and copolymers for coatings, adhesives, and dispersants.
• Chemical Intermediate: Crucial building block in organic synthesis for manufacturing pharmaceuticals, agrochemicals, and fragrances.
• Resin Modifier: Used to modify alkyd and other synthetic resins to improve flexibility, adhesion, and drying properties.
• Crosslinking Agent: Functions as a reactive site in crosslinkable polymer systems for enhanced thermal and chemical resistance.
• Lubricant & Fuel Additive: Employed in the synthesis of esters that serve as advanced lubricant additives and fuel system icing inhibitors.
• Textile & Leather Processing: Utilized in formulations for textile finishing and leather tanning auxiliaries.

Basic Information

Product Name	trans-Crotonic Acid
CAS No.	3724-65-0
Molecular Formula	C4H6O2
Molecular Weight	86.09 g/mol
Synonyms	(E)-2-Butenoic Acid; (E)-Crotonic Acid; trans-2-Butenoic Acid; β-Methylacrylic Acid; 3-Methylacrylic Acid; Crotonic Acid (trans-); Tiglidic Acid; 2-Butenoic Acid (E)-
EINECS	223-077-4

Quality Control

Our trans-Crotonic Acid is produced under a stringent quality management system to ensure batch-to-batch consistency and high purity. Each lot is tested against comprehensive specifications, including assay, identity, and impurity profiles. A Certificate of Analysis (COA) detailing all test results is provided with every shipment to support your quality assurance and regulatory compliance needs.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area away from incompatible materials such as strong bases and oxidizing agents. Recommended storage temperature is 15-25°C. The product is a strong acid/organic solvent; ensure containers are kept tightly sealed to prevent moisture absorption and contamination.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms
Assay (HPLC)	≥ 98.0%
Melting Point	70°C - 74°C
Loss on Drying	≤ 0.5%
Residue on Ignition	≤ 0.1%
Heavy Metals (as Pb)	≤ 10 ppm

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