Description

Alkyl Ketene Dimer (AKD) is a high-performance, reactive sizing agent primarily used in the paper and pulp industry. Its core value lies in its ability to impart excellent hydrophobicity and sizing properties to paper and paperboard, significantly improving water and ink resistance. This compound is essential for manufacturers of high-quality writing, printing, and packaging grades. The product is supplied under the identifier CAS No. 144245-85-2.

Application

• Paper Sizing Agent: Primary application for imparting internal and surface sizing to paper and paperboard to control liquid absorption.
• Packaging Material Production: Used in the manufacture of liquid packaging boards, corrugated containers, and other packaging requiring moisture resistance.
• Fine Paper Manufacturing: Critical for producing high-grade writing, printing, and copy papers to prevent ink feathering and improve printability.
• Board and Carton Stock: Enhances the stiffness and water repellency of folding boxboard and other solid board products.
• Specialty Paper Coatings: Employed in formulations for release papers, label stocks, and other specialty applications.
• Neutral/Alkaline Papermaking: A key chemical in modern, neutral/alkaline papermaking processes, offering advantages over rosin-based sizes.

Basic Information

Item	Detail
Product Name	Alkyl Ketene Dimer
CAS No.	144245-85-2
Molecular Formula	Typically CnH2nO (where alkyl chain varies, commonly C14-C18)
Molecular Weight	Varies by alkyl chain length (e.g., ~280-340 g/mol)
Synonyms	AKD; Alkylketene Dimer; Ketene Dimer, Alkyl-; Paper Sizing Agent AKD; Alkenyl Succinic Anhydride alternative (for sizing); Long-chain Alkyl Ketene Dimer; Hexadecyl Ketene Dimer (common specific); Tetradecyl Ketene Dimer
EINECS	Contact for details

Quality Control

Our Alkyl Ketene Dimer is manufactured under a stringent quality management system to ensure batch-to-batch consistency and performance reliability. Quality is verified through parameters including active content, melting point, and acid value. A Certificate of Analysis (COA) documenting purity and key specifications is provided with every shipment to support your quality assurance protocols.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). Keep away from heat, open flames, and sources of ignition. This material is moisture-sensitive (hygroscopic); ensure containers are kept tightly sealed to prevent contact with atmospheric moisture.

Specification

Item	Specification
Appearance	White to pale yellow wax / solid
Active Content (AKD)	Min. 95%
Melting Point	45 - 55 °C
Acid Value	Max. 2.0 mg KOH/g
Identification (IR)	Conforms
Solubility	Soluble in organic solvents (e.g., acetone, toluene)

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