Description

Phthalic Anhydride, 3-Propyl- (6Ci,8Ci) is a specialized alkylated derivative of phthalic anhydride, a key building block in organic synthesis. This compound matters for its role as a versatile intermediate, enabling the introduction of a propyl-substituted phthalate moiety into target molecules. It is primarily needed by R&D chemists and process development scientists in the pharmaceutical, agrochemical, and advanced materials sectors for synthesizing novel active ingredients and functional polymers.

Application

• Pharmaceutical Intermediate: Serves as a key synthon in the research and development of new active pharmaceutical ingredients (APIs), particularly for introducing specific lipophilic character.
• Agrochemical Synthesis: Used in the production of advanced herbicides, fungicides, and plant growth regulators where modified phthalate structures are required.
• Polymer & Resin Modifier: Acts as a monomer or cross-linking agent in the synthesis of specialty polyesters, alkyd resins, and plasticizers to alter flexibility and thermal properties.
• Dye & Pigment Manufacturing: Employed as a precursor in the synthesis of specialized organic pigments and colorants for high-performance applications.
• Liquid Crystal & OLED Materials: Functions as a core building block in the development of advanced organic electronic materials and liquid crystal displays.
• Chemical Research (6Ci,8Ci): Specifically valuable in chemical identification and regulatory labeling contexts, as indicated by its Chemical Abstracts Service (CAS) index name.

Basic Information

Product Name	Phthalic Anhydride, 3-Propyl- (6Ci,8Ci)
CAS No.	25809-29-4
Molecular Formula	C11H10O3
Molecular Weight	190.20 g/mol
Synonyms	3-Propylphthalic Anhydride; 3-Propyl-1,3-isobenzofurandione; 1,3-Isobenzofurandione, 3-propyl-; 3-n-Propylphthalic anhydride; Propylphthalic Anhydride; 3-Propylphthalic Acid Anhydride; 25809-29-4 (CAS RN)
EINECS	Contact for details

Quality Control

Our Phthalic Anhydride, 3-Propyl- (6Ci,8Ci) is produced and handled under a strict quality management system. Each batch undergoes rigorous analytical testing to ensure identity, purity, and consistency. Certificates of Analysis (COA) detailing specifications such as assay (by HPLC or GC), related substances, and physical characteristics are provided and available upon request to support your quality and regulatory documentation.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). This material is hygroscopic (moisture-sensitive). Keep the container tightly sealed under an inert atmosphere (e.g., nitrogen or argon) to prevent moisture absorption and potential degradation. Keep away from heat and incompatible materials.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC/GC)	≥ 97.0%
Melting Point	Contact for details
Loss on Drying	≤ 0.5%
Related Substances (HPLC)	Contact for details

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