Triacetin

An ester, C9H14O6, 218.205 g/mol. Boiling point 258-259 °C, melting point -78 °C, as published.

verified recordOrganic — ester8 measured properties

Identifiers

Molecular formula: C₉H₁₄O₆
Molecular weight: 218.205 g/mol
Exact mass: 218.079038 g/mol
IUPAC name: 2,3-diacetyloxypropyl acetate
SMILES: CC(=O)OCC(COC(C)=O)OC(C)=O
InChI: InChI=1S/C9H14O6/c1-6(10)13-4-9(15-8(3)12)5-14-7(2)11/h9H,4-5H2,1-3H3
InChIKey: URAYPUMNDPQOKB-UHFFFAOYSA-N

Open in ReactionLens Use in reaction prediction

Measured properties

Published measurements, each with its source. Two readings of one property are both shown, in the units each used.

Boiling Point: 258-259 °Cmeasured · Hazardous Substances Data Bank (HSDB); 258.00 to 260.00 °C. @ 760.00 mm Hgmeasured · Human Metabolome Database (HMDB)
Melting Point: -78 °Cmeasured · Hazardous Substances Data Bank (HSDB); -78 °Cmeasured · Human Metabolome Database (HMDB)
Density: 1.1583 g/cu cm at 20 °Cmeasured · Hazardous Substances Data Bank (HSDB); Bulk density: 9.7 lb/galmeasured · Hazardous Substances Data Bank (HSDB)
Solubility: In water, 52,130 mg/L at 24.5 °Cmeasured · Hazardous Substances Data Bank (HSDB); In water, 58,000 mg/L at 25 °Cmeasured · Hazardous Substances Data Bank (HSDB)
Vapor Pressure: 0.00248 [mmHg]measured · Haz-Map, Information on Hazardous Chemicals and Occupational Diseases; VP: 1 mm Hg at 100 °Cmeasured · Hazardous Substances Data Bank (HSDB)
LogP: log Kow = 0.25measured · Hazardous Substances Data Bank (HSDB); 0.25measured · Human Metabolome Database (HMDB)
Flash Point: 280 °F (138 °C) (closed cup)measured · Hazardous Substances Data Bank (HSDB); 138 °C c.c.measured · ILO-WHO International Chemical Safety Cards (ICSCs)
Refractive Index: [n]D/25 between 1,429 and 1,431measured · reference compound database; Index of refraction = 1.4312 at 20 °C/Dmeasured · O'Neil, M.J. (ed.). The Merck Index - An Encyclopedia of Chemicals, Drugs, and Biologicals. Cambridge, UK: Royal Society of Chemistry, 2013., p. 1777; 1.424-1.432measured · reference compound database

Calculated properties

Derived from the structure, not from a sample; kept apart from the measurements above.

Molecular weight: 218.2 g/molcalculated · reference compound database; Average mass of one molecule, from reference compound database.
Exact mass: 218.07903816 Dacalculated · reference compound database; Mass of the most common isotopic form.
XLogP3: 0.2calculated · reference compound database; Estimated oil/water partition, computed by reference compound database.
Polar surface area: 78.9 Å²calculated · reference compound database; Polar surface area as computed by reference compound database.
Complexity: 229calculated · reference compound database; A rough measure of how intricate the structure is.
H-bond donors: 0calculated · reference compound database
H-bond acceptors: 6calculated · reference compound database
logP: 0.0443calculated · chemistry engine; Estimated preference for oil over water. Higher means more oil-like.
Topological polar surface area: 78.9 Å²calculated · chemistry engine; Surface area from polar atoms; relates to how easily a molecule crosses membranes.
H-bond donors: 0calculated · chemistry engine; Atoms that can donate a hydrogen bond.
H-bond acceptors: 6calculated · chemistry engine; Atoms that can accept a hydrogen bond.
Rotatable bonds: 5calculated · chemistry engine; Single bonds the molecule can freely twist around.
Molar refractivity: 48.82 cm³/molcalculated · chemistry engine; Relates to the molecule's polarisability.
Fraction sp³ carbons: 0.6667calculated · chemistry engine; Share of carbon atoms with tetrahedral bonding.
QED drug-likeness: 0.4787calculated · chemistry engine; Quantitative estimate of drug-likeness (0–1).

What it is made of

Elements

C Carbon9 atoms · 49.5% by mass
O Oxygen6 atoms · 44.0% by mass
H Hydrogen14 atoms · 6.5% by mass

Percentages are of the molecular weight above, worked out the same way the molar mass calculator does it.

Structure

Heavy atoms, hydrogen excluded: 15
Total atoms, hydrogen included: 29
Rings: 0
Aromatic rings: 0
Stereocentres: 0
Formal charge: 0

Functional groups

Ester
A carbonyl bonded to an oxygen that links to another carbon.
Ether
An oxygen bridging two carbons.

Matched by structural pattern, not by a measurement.

The molecule in three dimensions

Rotate and inspect the atoms. Loaded only when you ask, so the page stays light.

The drawing above is a diagram of what is bonded to what. A molecule is not flat, and the model here is one low-energy shape generated from the connectivity — useful for seeing which groups can reach each other, and not a measured structure. A real sample is a population of conformations, interconverting.

Reactions it appears in

No documented reaction with a written procedure and a source involves Triacetin yet.

Other names for it

The systematic name on this record is 2,3-diacetyloxypropyl acetate.

The sources also call it Glyceryl triacetate, Glycerol triacetate, Enzactin, Triacetine, Triacetylglycerol, Glycerin triacetate, Fungacetin, Glyped, Vanay, Kesscoflex TRA, Kodaflex triacetin.

Structurally related

Molecules sharing this formula, or whose fingerprint is at least 40% similar to this one. Similarity is Tanimoto on Morgan fingerprints over this library only — it is a measure of structural overlap, not of how alike they behave.

1,4-Butanediol, 2-[(acetyloxy)methyl]-, 1-acetate

C9H16O5

1,3-Dipivaloyl-2-acetoxymethyl glycerol

C16H28O7

Where these values came from

reference compound database5541
compound record
chemistry engine
structure perception

compound record.

What this page does not claim

Identifiers are copied from the source record, measured values are reported as published, and calculated values are marked as calculated. Nothing here is a hazard, purity or handling assessment — how the library is checked.