Description

Cellulose Acetate Propionate CAS NO 9004-39-1 is a mixed cellulose ester derived from the reaction of cellulose with propionic anhydride and acetic anhydride. This versatile polymer is valued for its excellent toughness, clarity, and solubility in a wide range of organic solvents, making it a critical material for high-performance coatings and molded articles. It is essential for manufacturers in the plastics, coatings, and specialty film industries seeking durable, transparent, and easily processable materials.

Application

• Thermoplastic Molding: Used in injection molding and extrusion for producing high-clarity, impact-resistant components for automotive trim, tool handles, and optical frames.
• Coatings and Inks: Serves as a primary film-forming agent in high-quality lacquers, printing inks, and wood finishes, providing excellent flow, adhesion, and gloss.
• Specialty Films: Employed in the production of protective and decorative films, release films, and membranes due to its good dimensional stability and solvent compatibility.
• Adhesives and Sealants: Acts as a modifier to enhance the flexibility, bonding strength, and drying characteristics of industrial adhesives.
• Controlled-Release Systems: Utilized in pharmaceutical and agrochemical applications for encapsulation and tablet coating to manage active ingredient release.
• Nail Polish and Cosmetics: Functions as a film-forming polymer in nail enamels and cosmetic products, offering high shine and chip resistance.

Basic Information

Product Name	Cellulose Acetate Propionate
CAS No.	9004-39-1
Molecular Formula	(C6H7O2(OCOCH3)x(OCOC2H5)y(OH)3-x-y)n
Molecular Weight	Varies by degree of substitution (Contact for details)
Synonyms	CAP; Cellulose Acetate Propanoate; Cellulose Acetate Propionate Ester; Acetyl Propionyl Cellulose; Cellulose, acetate propanoate; Cellpropion; 2-Propanoyloxy-1-(acetyloxy)cellulose; Cellulose Acetate Propionate Polymer
EINECS	Contact for details

Quality Control

Our Cellulose Acetate Propionate is manufactured under a stringent quality management system. Each batch is tested against critical parameters including acetyl/propionyl content, viscosity, and clarity to ensure consistent performance and lot-to-lot uniformity. Certificates of Analysis (COA) documenting purity, physical properties, and residual solvent levels are available upon request to support your quality assurance protocols.

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). This material is hygroscopic (moisture-sensitive); keep the container tightly sealed when not in use to prevent moisture absorption, which can affect processing characteristics.

Specification

Item	Specification
Appearance	White to off-white granules or powder
Identification (IR)	Conforms
Acetyl Content	1.5 - 9.0 %
Propionyl Content	39 - 47 %
Hydroxyl Content	0.5 - 4.5 %
Viscosity (in solution)	10 - 120 sec (Range varies by grade)
Moisture Content	≤ 3.0 %
Residue on Ignition	≤ 0.2 %

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