27554-26-3

Basic information

• Product Name: Diisooctyl phthalate
• Synonyms: Phthalic acid, diisooctyl ester;Witcizer 313;1,2-Benzenedicarboxylic Acid Diisoctyl Ester;diiso-octyl orthophthalate;diisooctyl phthalate, mixed isomers;DIISOOCTYL PHTHALATE, TECH.;phthalic acid, bis-iso-octyl ester;DIISOOCTYLPHTHALATEESTER
• CAS NO: 27554-26-3
• Molecular Formula: C24H38O4
• Molecular Weight: 390.56
• EINECS: 248-523-5
• Product Categories: Industrial/Fine Chemicals;Plasticizers;Polymer Additives;Polymer Science
• Mol File: 27554-26-3.mol
• Article Data: 0

Chemical Properties

• Melting Point: -4°C
• Boiling Point: 435.74°C (rough estimate)
• Flash Point: >230 °F
• Appearance: Oily colorless liquid with a slight ester odor
• Density: 0.983 g/mL at 25 °C(lit.)
• Vapor Pressure: 1 mm Hg ( 200 °C)
• Refractive Index: n20/D 1.486(lit.)
• Storage Temp.: Refrigerator, under inert atmosphere
• Solubility: DMSO (Slightly), Methanol (Slightly, Heated)
• Water Solubility: 40ug/L(25 oC)
• CAS DataBase Reference: Diisooctyl phthalate(CAS DataBase Reference)
• NIST Chemistry Reference: Diisooctyl phthalate(27554-26-3)
• EPA Substance Registry System: Diisooctyl phthalate(27554-26-3)

Safety Data

• Hazard Codes: Xn,T
• Statements: 62-63-61-60
• Safety Statements: 23-36/37-24/25-2-45-53
• WGK Germany: 1
• RTECS: TI1300000
• TSCA: Yes
• Hazardous Substances Data: 27554-26-3(Hazardous Substances Data)

Usage

Description

Diisooctyl phthalate, also known as dioctyl phthalate, is an oily colorless liquid with a slight ester odor. It is denser than water and insoluble in water but soluble in organic solvents. The empirical formula of diisooctyl phthalate (DIOP) is C24H38O4, and its structural formula varies due to the presence of several isomers in the iso-alcohols used in its manufacture.

Uses

Diisooctyl phthalate is used as a plasticizer for various applications, primarily in the plastics industry.
Used in Plastics Industry:
Diisooctyl phthalate is used as a plasticizer to increase the flexibility, workability, and durability of plastics. It is particularly effective in the production of polyvinyl chloride (PVC) products, such as pipes, cables, and films, due to its ability to enhance the material's properties and improve its overall performance.
Additionally, diisooctyl phthalate can be used in other industries where plasticizers are required to improve the flexibility and workability of materials.

Production Methods

DIOP is manufactured by the reaction of phthalic anhydride with isooctanol in the presence of an acid catalyst.

Air & Water Reactions

Insoluble in water.

Reactivity Profile

Diisooctyl phthalate reacts exothermically with acids to generate isooctyl alcohol and phthalic acid. Strong oxidizing acids may cause a vigorous reaction that is sufficiently exothermic to ignite the reaction products. Heat is also generated by interaction with caustic solutions. Flammable hydrogen is generated by mixing with alkali metals and hydrides. Can generate electrostatic charges. [Handling Chemicals Safely, 1980. p. 250].

InChI:InChI=1/C24H38O4/c1-19(2)13-7-5-11-17-27-23(25)21-15-9-10-16-22(21)24(26)28-18-12-6-8-14-20(3)4/h9-10,15-16,19-20H,5-8,11-14,17-18H2,1-4H3