CAS 120-55-8PubChem CID 8437
Di-O-benzoyldiethylene glycol
- IUPAC name
- 2-(2-benzoyloxyethoxy)ethyl benzoate
- Molecular formula
- C18H18O5
- Molecular weight
- 314.3 g/mol
- Exact mass
- 314.11542367 Da
- XLogP3
- 3.4
- Topological polar surface area
- 61.8 Ų
- Hydrogen-bond donors
- 0
- Hydrogen-bond acceptors
- 5
- Covalent units
- 1
- Defined stereocentres
- 0
Also known as
Diethylene glycol dibenzoateBenzo Flex 2-45Dibenzoyldiethyleneglycol esterDIETHYLENE GLYCOL, DIBENZOATEYAI66YDY1CBenzoflex 2-45Benzoyloxyethoxyethyl benzoateEthanol, 2,2'-oxybis-, dibenzoate
16 more reported names
Benzoic acid, diester with diethylene glycolFLEXOL 2GBMONOCIZER PB 3VELSICOL 2-45204-407-6RefChem:587361Oxybis(ethane-2,1-diyl) dibenzoateDiglycol dibenzoateOxydiethylene dibenzoateEthanol, 2,2'-oxybis-, 1,1'-dibenzoate2-[2-(Benzoyloxy)ethoxy]ethyl benzoateTox21_201732CS-0435534D1522CAS-120-55-8Di(ethylene glycol) dibenzoate
External database identifiers
- ChEMBL:CHEMBL2130591
- EPA DTXSID:DTXSID0026967
- PubMed:29723837
- PubMed:29410257
- PubMed:28843100
Evidence from additional scientific databases
NIH PubChem PUG-View
Exact identifier match8437
Attributed physical-property, hazard, environmental and use annotations.
- Boiling Point: 225-227 °C @ 3 MM HG Source: Hazardous Substances Data Bank (HSDB)
- Boiling Point: at 0.7kPa: 236 °C Source: ILO-WHO International Chemical Safety Cards (ICSCs)
- Color/Form: LIQUID Source: Hazardous Substances Data Bank (HSDB)
- Density: 1.2 @ 68 °F (20 °C) Source: Hazardous Substances Data Bank (HSDB)
- Density: Relative density (water = 1): 1.2 Source: ILO-WHO International Chemical Safety Cards (ICSCs)
- Flash Point: 450 °F (232 °C) (CLOSED CUP) Source: Hazardous Substances Data Bank (HSDB)
- Flash Point: 232 °C Source: ILO-WHO International Chemical Safety Cards (ICSCs)
- Melting Point: -28 °C Source: Hazardous Substances Data Bank (HSDB)
- Melting Point: 28 °C Source: ILO-WHO International Chemical Safety Cards (ICSCs)
- Physical Description: Liquid Source: EPA Chemical Data Reporting (CDR)
- Physical Description: Liquid; [Hawley] Solid; mp = 28 deg C; [ICSC] Liquid; mp = -28 deg C; [HSDB] 89.9% Diethylene glycol, dibenzoate freezing point = 24 deg C; [eChemPortal: HPVIS] Colorless to straw-colored viscous liquid; mp ~ 16 deg C; [MSDSonline] Source: Haz-Map, Information on Hazardous Chemicals and Occupational Diseases
- Physical Description: CRYSTALS. Source: ILO-WHO International Chemical Safety Cards (ICSCs)
- Refractive Index: Refractive index = 1.5424 Source: Hazardous Substances Data Bank (HSDB)
- Solubility: SOL IN WATER Source: Hazardous Substances Data Bank (HSDB)
- Solubility: Solubility in water: miscible Source: ILO-WHO International Chemical Safety Cards (ICSCs)
- Vapor Pressure: 0.09 [mmHg] Source: Haz-Map, Information on Hazardous Chemicals and Occupational Diseases
- Viscosity: 110 mPa.s @ 20 °C Source: Hazardous Substances Data Bank (HSDB)
- Exposure Routes: The substance can be absorbed into the body by inhalation. Source: ILO-WHO International Chemical Safety Cards (ICSCs)
- Note: This chemical does not meet GHS hazard criteria for 78.4% (297 of 379) of all reports. Source: European Chemicals Agency (ECHA)
- GHS Hazard Statements: H411 (21.1%): Toxic to aquatic life with long lasting effects [Hazardous to the aquatic environment, long-term hazard] Source: European Chemicals Agency (ECHA)
- Precautionary Statement Codes: P273, P391, and P501 (click each P-code to see the statement) Source: European Chemicals Agency (ECHA)
- ECHA C&L Notifications Summary: Aggregated GHS information provided per 379 reports by companies from 6 notifications to the ECHA C&L Inventory.; Reported as not meeting GHS hazard criteria per 297 of 379 reports by companies.; There are 3 notifications provided by 82 of 379 reports by companies with hazard statement code(s).; Information may vary between notifications depending on impurities, additives, and other factors. The percentage value in parenthesis indicates the notified classification ratio from companies that provide hazard codes. Only hazard codes with percentage values above 10% are shown. For more detailed information, please visit ECHA C&L website. Source: European Chemicals Agency (ECHA)
- NFPA Health Rating: 0 - Materials that, under emergency conditions, would offer no hazard beyond that of ordinary combustible materials. Source: Hazardous Substances Data Bank (HSDB)
- NFPA Fire Rating: 1 - Materials that must be preheated before ignition can occur. Materials require considerable preheating, under all ambient temperature conditions, before ignition and combustion can occur. Source: Hazardous Substances Data Bank (HSDB)
- NFPA Instability Rating: 0 - Materials that in themselves are normally stable, even under fire conditions. Source: Hazardous Substances Data Bank (HSDB)
- Environmental Bioconcentration: An estimated BCF value of 120 was calculated for diethylene glycol dibenzoate(SRC), using an estimated log Kow of 3.04(1,SRC) and a recommended regression-derived equation(2). According to a classification scheme(3), this BCF value suggests that bioconcentration in aquatic organisms is high(SRC). Source: Hazardous Substances Data Bank (HSDB)
- Environmental Fate: TERRESTRIAL FATE: Based on a recommended classification scheme(1), an estimated Koc value of 540(SRC), determined from a structure estimation method(2), indicates that diethylene glycol dibenzoate will have low mobility in soil(SRC). Volatilization of diethylene glycol dibenzoate should not be important from moist soil surfaces(SRC) given an estimated Henry's Law constant of 3X10-12 atm-cu m/mole(SRC), using a recommended regression equation(3). Volatilization from dry soil surfaces(SRC) is not expected based on an estimated vapor pressure of 0.09 mm Hg(SRC), determined from a fragment constant method(4). No data are available to determine the rate or importance of biodegradation of diethylene glycol dibenzoate in soil(SRC). Source: Hazardous Substances Data Bank (HSDB)
- Environmental Fate: AQUATIC FATE: Based on a recommended classification scheme(1), an estimated Koc value of 540(SRC), determined from a structure estimation method(2), indicates that diethylene glycol dibenzoate should adsorb to suspended solids and sediment in the water(SRC). Diethylene glycol dibenzoate will be essentially non-volatile from water surfaces(1,SRC) based on an estimated Henry's Law constant of 3X10-12 atm-cu m/mole(SRC), developed using a fragment constant estimation method(3). According to a classification scheme(5), an estimated BCF value of 120(1,SRC), from an estimated log Kow(4,SRC), suggests that bioconcentration in aquatic organisms is high(SRC). Diethylene glycol dibenzoate has an estimated base-catalyzed hydrolysis rate of 0.16 L/mol-sec at a pH of 8, which corresponds to a half-life of 49 days at a pH of 8 and 1.3 years at a pH of 7(6,SRC). Insufficient data are available to determine the rate or importance of biodegradation of diethylene glycol dibenzoate in water(SRC). Source: Hazardous Substances Data Bank (HSDB)
- Environmental Fate: ATMOSPHERIC FATE: According to a model of gas/particle partitioning of semivolatile organic compounds in the atmosphere(1), diethylene glycol dibenzoate, which has an estimated vapor pressure of 0.09 mm Hg at 25 °C(2,SRC), will exist solely as a vapor in the ambient atmosphere. Vapor-phase diethylene glycol dibenzoate is degraded in the atmosphere by reaction with photochemically produced hydroxyl radicals(SRC); the half-life for this reaction in air is estimated to be about 20 hours(3,SRC). Particulate-phase diethylene glycol dibenzoate may be physically removed from the air by wet and dry deposition(SRC). Source: Hazardous Substances Data Bank (HSDB)
- Consumer Uses: Plasticizer; Not Known or Reasonably Ascertainable Source: EPA Chemical Data Reporting (CDR)
- Industry Uses: Plasticizer; Not Known or Reasonably Ascertainable Source: EPA Chemical Data Reporting (CDR)
- Sources/Uses: Used as plasticizer for resins (cellulose acetate butyrate, polyvinyl acetate, cellulose nitrate, ethyl cellulose, and polymethyl methacrylate) and a stabilizer for perfumes; [HSDB] Source: Haz-Map, Information on Hazardous Chemicals and Occupational Diseases
- Uses: PLASTICIZER Source: Hazardous Substances Data Bank (HSDB)
- Uses: PLASTICIZER FOR CELLULOSE ACETATE BUTYRATE RESINS Source: Hazardous Substances Data Bank (HSDB)
- Uses: PLASTICIZER FOR CELLULOSE NITRATE RESINS Source: Hazardous Substances Data Bank (HSDB)
- Uses: PLASTICIZER FOR ETHYL CELLULOSE RESINS Source: Hazardous Substances Data Bank (HSDB)
- Uses: For more Uses (Complete) data for DIETHYLENE GLYCOL, DIBENZOATE (6 total), please visit the HSDB record page. Source: Hazardous Substances Data Bank (HSDB)
Mapped by: Existing checksum-valid CAS to unique PubChem CID match. Retrieved: 2026-08-31. Open source record
Scientific classifications and hazard annotations provide context and do not replace the market-specific regulatory decision shown above.
Additional source coverage and match status
| Source | Result | Checked |
|---|---|---|
| NIH PubChem PUG-View | Exact match | 2026-08-31 |
A recorded no-match is useful evidence that the source was checked; it is not a claim that the substance does not exist elsewhere.
Retrieved from NIH PubChem on 2026-08-31 by checksum-valid CAS matching. Chemical properties do not replace the regulatory decision on this page.