Description

Butyl Isobutyl Phthalate CAS NO 17851-53-5 is a high-purity phthalate ester plasticizer known for its excellent solvating power and compatibility with a wide range of polymers. This compound is valued for its ability to impart flexibility, durability, and low-temperature performance to finished products, making it a critical component in advanced material formulations. It is primarily sought by manufacturers in the plastics, coatings, and specialty chemical industries seeking reliable performance and consistent quality for their production processes.

Application

Butyl Isobutyl Phthalate serves as a versatile intermediate and plasticizer across multiple industrial sectors. Its key applications include:

• Primary Plasticizer for polyvinyl chloride (PVC) resins in wire & cable insulation, flooring, and synthetic leather.
• Co-Additive in polymer blends to enhance flexibility and processability.
• Solvent and Carrier in specialty coatings, adhesives, and sealant formulations.
• Functional Fluid component in industrial lubricants and hydraulic systems.
• Processing Aid in the manufacture of cellulose-based plastics and rubber products.
• Dispersant for pigments and dyes in colorant production.

Basic Information

Product Name	Butyl Isobutyl Phthalate
CAS No.	17851-53-5
Molecular Formula	C16H22O4
Molecular Weight	278.34 g/mol
Synonyms	1,2-Benzenedicarboxylic acid, butyl isobutyl ester; Phthalic acid, butyl isobutyl ester; Butyl isobutyl benzene-1,2-dicarboxylate; BIBP; Isobutyl butyl phthalate; Dibutyl phthalate, mixed isomers; NSC 15317
EINECS	241-787-5

Quality Control

Our Butyl Isobutyl Phthalate is manufactured under a stringent quality management system to ensure batch-to-batch consistency and reliability. Each lot is analyzed against comprehensive specifications, including purity, color, acidity, and moisture content. Certificates of Analysis (COA) documenting all test results are provided and can be tailored to meet specific customer or regulatory requirements.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area away from heat sources and incompatible materials. Recommended storage temperature is 15-25°C. Keep container tightly sealed when not in use to minimize moisture absorption and prevent contamination.

Specification

Item	Specification
Appearance	Clear, colorless to pale yellow liquid
Identification (IR)	Conforms
Assay (GC)	≥ 99.0%
Color (APHA)	≤ 30
Acidity (as Phthalic Acid)	≤ 0.01%
Water Content (KF)	≤ 0.05%
Specific Gravity (20/20°C)	1.055 - 1.065
Refractive Index (20°C)	1.488 - 1.492

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