Dioctyl phthalate

Description

Dioctyl phthalate · CAS 117-84-0 · C24H38O4. UNII 8X3RJ0527W. Boiling Point: 428 °F at 760 mmHg (NTP, 1992); Boiling Point: BP: 220 °C at 2 mm Hg; Boiling Point: 428 °F.

Identification

CAS Registry Number	117-84-0
PubChem CID	8346
Molecular formula	C24H38O4
IUPAC name	dioctyl benzene-1,2-dicarboxylate
UNII (FDA)	8X3RJ0527W

Computed Descriptors

Molecular Weight	390.6
XLogP3	9.1
Hydrogen Bond Donor Count	0
Hydrogen Bond Acceptor Count	4
Rotatable Bond Count	18
Exact Mass	390.27700969
Monoisotopic Mass	390.27700969
Topological Polar Surface Area	52.6
Heavy Atom Count	28
Formal Charge	0

Physical & Chemical Properties

Boiling Point	428 °F at 760 mmHg (NTP, 1992)
Boiling Point	BP: 220 °C at 2 mm Hg
Boiling Point	428 °F
Melting Point	-13 °F (NTP, 1992)
Melting Point	25 °C
Melting Point	-13 °F
Flash Point	219 °F (NTP, 1992)
Flash Point	420 °F (215 °C) (Open cup)
Flash Point	219 °F
Solubility	In water, 0.022 mg/L at 25 °C

Physical description & handling notes

• Liquid
• Clear liquid; [HSDB] Clear colorless odorless liquid; [CHEMINFO]
• A clear liquid with a mild odor.
• Clear, oily liquid
• Liquid at room temperature
• less than 1 mg/mL at 66 °F (NTP, 1992)

Regulatory Status

GHS notification summary	57.1% (36 / 63)

GHS Hazard Classification

GHS notification summary	57.1% (36 / 63)
Reported hazard statements	H361 (41.3%), H320, H335, H313, H317, H334, H413

Documented Uses

• Working with Glues and Adhesives [Category: Other]
• Textiles (Printing, Dyeing, or Finishing) [Category: Industry]
• Monomeric plasticizer for vinyl and cellulosic resins.
• PLASTICIZER FOR POLYSTYRENE RESINS
• Di-n-octylphthalate is produced commercially as a component of mixed phthalate esters, including straight- chain C6, C8, and Cl0 phthalates. Di-n-octylphthalate is produced at atmospheric pressure or in a vacuum by heating an excess of n-octanol with phthalic anhydride in the presence of an esterification catalyst such as sulfuric acid or p-toluenesulfonic acid. The process may be either continuous or discontinuous. Di-n-octylphthalate can also be produced by the reaction of n-octylbromide with phthalic anhydride.
• n-Dioctyl phthalate is formed via the esterification of n-octanol with phthalic anhydride in the presence of a catalyst (sulfuric acid or p-toluenesulfonic acid) or noncatalytically at high temperature.

Synonyms

Dioctyl phthalate; DI-N-OCTYL PHTHALATE; 117-84-0; Dinopol NOP; DNOP; Vinicizer 85; n-Octyl phthalate; Celluflex DOP; Phthalic acid, dioctyl ester; Bis(n-octyl) phthalate; Dioctyl 1,2-benzenedicarboxylate; Px-138; Dioctyl o-benzenedicarboxylate; 1,2-Benzenedicarboxylic acid, dioctyl ester; N-Dioctyl phthalate; Dioktylester kyseliny ftalove

Frequently Asked Questions

What are the CAS number and molecular formula of Dioctyl phthalate?

CAS 117-84-0; molecular formula C24H38O4; molecular weight — g/mol.

What other names is Dioctyl phthalate known by?

Dioctyl phthalate, DI-N-OCTYL PHTHALATE, 117-84-0, Dinopol NOP, DNOP, Vinicizer 85.

Is Dioctyl phthalate classified as hazardous?

57.1% of GHS notifications report no hazard classification (36 of 63).

What are the key physical properties of Dioctyl phthalate?

Boiling Point: 428 °F at 760 mmHg (NTP, 1992); Boiling Point: BP: 220 °C at 2 mm Hg; Boiling Point: 428 °F; Melting Point: -13 °F (NTP, 1992).

Facts on this page are taken from PubChem (US National Library of Medicine) and Wikidata. Grade-specific data — assay, moisture, particle size, packaging, shelf life — is issued per batch on the COA and is not published here.