Bis(2-Hydroxyethyl) terephthalate

Bis(2-Hydroxyethyl) terephthalate
Names
	Preferred IUPAC name Bis(2-hydroxyethyl) benzene-1,4-dicarboxylate
	Other names Bis(2-hydroxyethyl) terephthalate
Identifiers
CAS Number	959-26-2 ;
3D model (JSmol)	Interactive image;
ChemSpider	13144;
ECHA InfoCard	100.012.270
PubChem CID	13739;
UNII	J61IL5R964 ;
CompTox Dashboard (EPA)	DTXSID3052644 ;
	InChI InChI=1S/C12H14O6/c13-5-7-17-11(15)9-1-2-10(4-3-9)12(16)18-8-6-14/h1-4,13-14H,5-8H2 Key: QPKOBORKPHRBPS-UHFFFAOYSA-N; InChI=1/C12H14O6/c13-5-7-17-11(15)9-1-2-10(4-3-9)12(16)18-8-6-14/h1-4,13-14H,5-8H2 Key: QPKOBORKPHRBPS-UHFFFAOYAN;
	SMILES O=C(OCCO)c1ccc(C(=O)OCCO)cc1;
Properties
Chemical formula	C12H14O6
Molar mass	254.238 g·mol−1
Appearance	White powder
Density	1.3 (±0.1) g/cm3
Melting point	106 °C
Solubility in water	0.593 g/L
Hazards
Flash point	172.0 (±19.4) °C
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

Bis(2-Hydroxyethyl) terephthalate (BHET) is an organic compound; it is the ester of ethylene glycol and terephthalic acid. Together with 2-hydroxyethyl terephthalic acid, bis(2-Hydroxyethyl) terephthalate is an intermediate in the production of poly(ethylene terephthalate). It is the product of the glycolysis reaction of PET with Ethylene glycol.^[3]

References

^ IUPAC Chemical Nomenclature and Structure Representation Division (2013). "P-65.1.1.2.1". In Favre, Henri A.; Powell, Warren H. (eds.). Nomenclature of Organic Chemistry: IUPAC Recommendations and Preferred Names 2013. IUPAC–RSC. ISBN 978-0-85404-182-4.
^ Yuan, Peiquan; Liu, Baoshu; Li, Qiuju; Sun, Hua (2022). "Solubility Determination and Correlation for Bis(2-hydroxyethyl) Terephthalate (BHET) in Four Binary Solvents from 283.15 to 323.15 K". Journal of Chemical & Engineering Data. 67 (9): 2693–2705. doi:10.1021/acs.jced.2c00194.
^ "Polyethylene terephthalate is an often-recycled plastic, but industry is still seeking major improvements". Chemical & Engineering News. Retrieved 2025-03-15.