对苯二甲酸二-2-乙基己酯 (DOTP)

Description

Di-2-ethylhexyl terephthalate (DOTP) · CAS 6422-86-2 · C24H38O4. UNII 4VS908W98L. Boiling Point: 383 °C; Melting Point: -48 °C; Flash Point: 238 °C or 460 °F (open cup).

Identification

CAS Registry Number	6422-86-2
PubChem CID	22932
Molecular formula	C24H38O4
IUPAC name	bis(2-ethylhexyl) benzene-1,4-dicarboxylate
UNII (FDA)	4VS908W98L

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	383 °C
Melting Point	-48 °C
Flash Point	238 °C or 460 °F (open cup)
Solubility	In water, 4.0 mg/L at 20 °C
Density	0.9825 at 20/20 °C
Vapor Density	13.5 (Air = 1)
Vapor Pressure	0.0000214 [mmHg]
Viscosity	63 cp at 25 °C
Collision Cross Section	215.81 Ų [M+Na]+

Physical description & handling notes

• Liquid
• Liquid; [MSDSonline]
• Index of refraction = 1.4867 at 20 °C/D
• Phthalate esters would be expected to have UV maxima in the 230 nm and 270 nm regions. /Phthalate esters/
• The lower esters are colorless, mobile, and highly volatile liquids that usually have pleasant odors. As the molecular mass increases, volatility decreases and the consistency becomes waxy, then solid, and eventually even brittle, often with formation of lustrous crystals. /Esters, organic/
• ... Resistance to migration from polymers, low temperature flexibility ... compatibility with polar polymers and additives over a wide range of compositions. /Phthalate esters/

Regulatory Status

Regulatory & Food Contact	FDA Inventory of Food Contact Substances Listed in 21 CFR: FCS FDA Inventory of Effective Food Contact Substance (FCS) Noti: FCS DI-2-ETHYLHEXYL TEREPHTHALATE 1,4-bis(2-ethylhexyl) benzenedicarboxylate (CAS Reg. No. 6422-86-2) SEE INTENDED USE The FCS is intended for use as a plasticizer in vinyl chloride polymer formulations.
GHS notification summary	99.7% (375 / 376)

GHS Hazard Classification

GHS notification summary	99.7% (375 / 376)

Documented Uses

• Used as plasticizer and as a softener for nitrile-butadiene rubber, chloroprene rubber, and isobutylene-isoprene rubber; [HSDB]
• SOFTENER FOR NITRILE-BUTADIENE & CHLOROPRENE RUBBER
• SOFTENER FOR ISOBUTYLENE-ISOPRENE RUBBER
• Plasticizer which is compatible with cellulose acetate-butyrate, cellulose nitrate, poly(methyl methacrylate), polystyrene, poly(vinyl butyral), and poly(vinyl chloride) resins.
• Plastics -> Polymer Type -> N.a.
• Not Known or Reasonably Ascertainable

Synonyms

Di-(2-ethylhexyl) terephthalate; 1,4-DEHT; RefChem:568745; Eastman DOTP Plasticizer; 6422-86-2; BIS(2-ETHYLHEXYL) TEREPHTHALATE; Kodaflex DOTP; Di(2-ethylhexyl) terephthalate; bis(2-ethylhexyl) benzene-1,4-dicarboxylate; 1,4-Benzenedicarboxylic acid, bis(2-ethylhexyl) ester; dioctyl terepthalate; Terephthalic acid, bis(2-ethylhexyl) ester; DTXSID7027625; MFCD00072256; Eastman 168; diethylhexyl terephthalate

Frequently Asked Questions

What are the CAS number and molecular formula of Di-2-ethylhexyl terephthalate (DOTP)?

CAS 6422-86-2; molecular formula C24H38O4; molecular weight — g/mol.

What other names is Di-2-ethylhexyl terephthalate (DOTP) known by?

Di-(2-ethylhexyl) terephthalate, 1,4-DEHT, RefChem:568745, Eastman DOTP Plasticizer, 6422-86-2, BIS(2-ETHYLHEXYL) TEREPHTHALATE.

What is the regulatory status of Di-2-ethylhexyl terephthalate (DOTP)?

Documented regulatory listings: FDA Inventory of Food Contact Substances Listed in 21 CFR: FCS; FDA Inventory of Effective Food Contact Substance (FCS) Noti: FCS; DI-2-ETHYLHEXYL TEREPHTHALATE.

Is Di-2-ethylhexyl terephthalate (DOTP) classified as hazardous?

99.7% of GHS notifications report no hazard classification (375 of 376).

What are the key physical properties of Di-2-ethylhexyl terephthalate (DOTP)?

Boiling Point: 383 °C; Melting Point: -48 °C; Flash Point: 238 °C or 460 °F (open cup); Solubility: In water, 4.0 mg/L at 20 °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.