Description

Bis(4-Hydroxybutyl)Terephthalate is a high-purity organic chemical intermediate with the CAS number 23358-95-4. This compound is a critical monomer in the synthesis of specialized polymers, particularly high-performance polyesters and polyurethanes. It is essential for manufacturers in the plastics, coatings, and specialty chemical industries seeking to develop materials with enhanced thermal stability and mechanical properties.

Application

• Polymer Synthesis: A key monomer for producing high-performance, linear aromatic polyesters and co-polyesters.
• Polyurethane Precursor: Used in the manufacture of specific polyurethane elastomers and coatings, contributing to flexibility and durability.
• Specialty Plasticizers: Serves as an intermediate in the synthesis of advanced polymeric plasticizers for PVC and other resins.
• Liquid Crystal Polymers (LCPs): An important building block in the production of LCPs for electronics and high-temperature applications.
• Adhesive & Sealant Formulations: Incorporated into formulations to modify rheology and enhance adhesion properties.
• Chemical Research & Development: Used as a standard or intermediate in R&D for novel polymeric materials and organic synthesis.

Basic Information

Product Name	Bis(4-Hydroxybutyl)Terephthalate
CAS No.	23358-95-4
Molecular Formula	C16H22O6
Molecular Weight	310.34 g/mol
Synonyms	BHBT; 1,4-Butanediol, 1,1'-[1,4-phenylenebis(oxy)]bis-; Terephthalic Acid Bis(4-hydroxybutyl) Ester; 4,4'-(Terephthaloyldioxy)dibutanol; Poly(tetramethylene terephthalate) Diol (low MW); PBT Diol; Bis(4-hydroxybutyl) Terephthalate; Terephthalic Acid Di(4-hydroxybutyl) Ester
EINECS	Contact for details

Quality Control

Our Bis(4-Hydroxybutyl)Terephthalate is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing, including HPLC for purity and identity confirmation, to ensure it meets exacting specifications for polymer-grade intermediates. Certificates of Analysis (COA) documenting purity, moisture content, and other critical parameters 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 product is hygroscopic (moisture-sensitive); containers must be kept tightly sealed to prevent absorption of atmospheric moisture, which can affect product quality and performance in sensitive applications.

Specification

Item	Specification
Appearance	White to off-white crystalline solid or waxy solid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Water Content (KF)	≤ 0.5%
Melting Point	Contact for details
Hydroxyl Value	Contact for details
Acid Value	≤ 1.0 mg KOH/g

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