Dioctyl phthalate (DOP)

Description

Bis(2-ethylhexyl) phthalate · CAS 50885-87-5 · C24H38O4. UNII C42K0PH13C. Boiling Point: 723 °F at 760 mmHg (NTP, 1992); Boiling Point: 384 °C; Boiling Point: BP: 231 °C at 5 mm Hg.

Identification

CAS Registry Number	50885-87-5
PubChem CID	8343
Molecular formula	C24H38O4
IUPAC name	bis(2-ethylhexyl) benzene-1,2-dicarboxylate
UNII (FDA)	C42K0PH13C

Computed Descriptors

Molecular Weight	390.6
XLogP3	7.4
Hydrogen Bond Donor Count	0
Hydrogen Bond Acceptor Count	4
Rotatable Bond Count	16
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	723 °F at 760 mmHg (NTP, 1992)
Boiling Point	384 °C
Boiling Point	BP: 231 °C at 5 mm Hg
Boiling Point	385 °C
Boiling Point	727 °F
Boiling Point	384 °C @760 [mm Hg]
Melting Point	-58 °F (NTP, 1992)
Melting Point	-55 °C
Melting Point	-50 °C
Melting Point	-58 °F

Physical description & handling notes

• Di(2-ethylhexyl) phthalate is a colorless to pale yellow oily liquid. Nearly odorless. (USCG, 1999)
• Other Solid; Large Crystals; Liquid; Liquid
• COLOURLESS-TO-LIGHT COLOURED VISCOUS LIQUID WITH CHARACTERISTIC ODOUR.
• Colorless, oily liquid with a slight odor.
• Liquid
• Colorless, oily liquid

Regulatory Status

Regulatory & Food Contact	FDA Inventory of Food Contact Substances Listed in 21 CFR: FCS CONTAMINANT: Food Contaminant bis(2-ETHYLHEXYL)PHTHALATE TRS 776-JECFA 33/31 FAS 24-JECFA 33/221 DEHP
GHS notification summary	0.1% (1 / 1071)

GHS Hazard Classification

GHS notification summary	0.1% (1 / 1071)
Reported hazard statements	H360 (94.5%), H320, H335, H351, H373, H400, H411, H316

Documented Uses

• Congress has permanently banned three types of phthalates (DEHP, DBP, BBP) in any amount greater than 0.1 percent (computed for each phthalate, individually) in (1) children's toys and (2) certain child care articles. di-(2-ethylhexyl) phthalate (DEHP), dibutyl phthalate (DBP), or benzyl butyl phthalate (BBP).
• Plastics may contain from 1 to 40% di(2-ethylhexyl) phthalate by weight and are used in consumer products such as imitation leather, rainwear, footwear, upholstery, flooring, wire and cable, tablecloths, shower curtains, food packaging materials and children's toys. ... Di(2-ethylhexyl) phthalate is also used as a hydraulic fluid and as a dielectric fluid (a non-conductor of electric current) in electrical capacitors.
• For more Uses (Complete) data for BIS(2-ETHYLHEXYL) PHTHALATE (19 total), please visit the HSDB record page.
• Plastics -> Typical concentration range in plastic materials -> 2.0 - 35.0%
• DEHP is present in plastic products such as wall coverings, tablecloths, floor tiles, furniture upholstery, shower curtains, garden hoses, swimming pool liners, rainwear, baby pants, dolls, some toys, shoes, automobile upholstery and tops, packaging film and sheets, sheathing for wire and cable, medical tubing, and blood storage bags. (L181)
• Food Contaminant -> CONTAMINANT -> JECFA Functional Classes

Synonyms

Bis(2-ethylhexyl) phthalate; 117-81-7; Di(2-ethylhexyl) phthalate; Di(2-ethylhexyl)phthalate; Etalon; Ethylhexyl phthalate; Vinicizer 80; Dioctylphthalate; Hercoflex 260; Nuoplaz dop; RC plasticizer DOP; Hatcol dop; Reomol dop; Sansocizer DOP; Ergoplast FDO; Monocizer DOP

Frequently Asked Questions

What are the CAS number and molecular formula of Bis(2-ethylhexyl) phthalate?

CAS 50885-87-5; molecular formula C24H38O4; molecular weight — g/mol.

What other names is Bis(2-ethylhexyl) phthalate known by?

Bis(2-ethylhexyl) phthalate, 117-81-7, Di(2-ethylhexyl) phthalate, Di(2-ethylhexyl)phthalate, Etalon, Ethylhexyl phthalate.

What is the regulatory status of Bis(2-ethylhexyl) phthalate?

Documented regulatory listings: FDA Inventory of Food Contact Substances Listed in 21 CFR: FCS; CONTAMINANT: Food Contaminant; bis(2-ETHYLHEXYL)PHTHALATE.

Is Bis(2-ethylhexyl) phthalate classified as hazardous?

0.1% of GHS notifications report no hazard classification (1 of 1071).

What are the key physical properties of Bis(2-ethylhexyl) phthalate?

Boiling Point: 723 °F at 760 mmHg (NTP, 1992); Boiling Point: 384 °C; Boiling Point: BP: 231 °C at 5 mm Hg; Boiling Point: 385 °C.

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.