Melamine

An inorganic compound, C3H6N6, 126.123 g/mol. Boiling point Sublimes, melting point 354 °C, as published.

verified recordInorganic compound7 measured properties

Identifiers

Molecular formula: C₃H₆N₆
Molecular weight: 126.123 g/mol
Exact mass: 126.065394 g/mol
IUPAC name: 1,3,5-triazine-2,4,6-triamine
SMILES: Nc1nc(N)nc(N)n1
InChI: InChI=1S/C3H6N6/c4-1-7-2(5)9-3(6)8-1/h(H6,4,5,6,7,8,9)
InChIKey: JDSHMPZPIAZGSV-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: Sublimes (NTP, 1992)measured · CAMEO Chemicals; Sublimesmeasured · Hazardous Substances Data Bank (HSDB)
Melting Point: 653 °F (decomposes) (NTP, 1992)measured · CAMEO Chemicals; 354 °Cmeasured · Hazardous Substances Data Bank (HSDB)
Density: 1.573 at 61 °F (NTP, 1992) - Denser than water; will sinkmeasured · CAMEO Chemicals; 1.573 at 14 °Cmeasured · Hazardous Substances Data Bank (HSDB)
Solubility: less than 1 mg/mL at 72 °F (NTP, 1992)measured · CAMEO Chemicals; Very slightly sol in hot alc; insol in ethermeasured · Hazardous Substances Data Bank (HSDB)
Vapor Pressure: 50 mmHg at 599 °F (NTP, 1992)measured · CAMEO Chemicals; VP: 50 mm Hg at 315 °Cmeasured · Hazardous Substances Data Bank (HSDB)
LogP: log Kow = -1.37measured · Hazardous Substances Data Bank (HSDB); -1.37measured · Human Metabolome Database (HMDB)
Refractive Index: Index of refraction: 1.872 at 20 degC/Dmeasured · Lide, D.R. CRC Handbook of Chemistry and Physics 86TH Edition 2005-2006. CRC Press, Taylor & Francis, Boca Raton, FL 2005, p. 3-488

Calculated properties

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

Molecular weight: 126.12 g/molcalculated · reference compound database; Average mass of one molecule, from reference compound database.
Exact mass: 126.06539422 Dacalculated · reference compound database; Mass of the most common isotopic form.
XLogP3: -1.4calculated · reference compound database; Estimated oil/water partition, computed by reference compound database.
Polar surface area: 117 Å²calculated · reference compound database; Polar surface area as computed by reference compound database.
Complexity: 63calculated · reference compound database; A rough measure of how intricate the structure is.
H-bond donors: 3calculated · reference compound database
H-bond acceptors: 6calculated · reference compound database
logP: -1.3818calculated · chemistry engine; Estimated preference for oil over water. Higher means more oil-like.
Topological polar surface area: 116.73 Å²calculated · chemistry engine; Surface area from polar atoms; relates to how easily a molecule crosses membranes.
H-bond donors: 3calculated · chemistry engine; Atoms that can donate a hydrogen bond.
H-bond acceptors: 6calculated · chemistry engine; Atoms that can accept a hydrogen bond.
Rotatable bonds: 0calculated · chemistry engine; Single bonds the molecule can freely twist around.
Molar refractivity: 33.0642 cm³/molcalculated · chemistry engine; Relates to the molecule's polarisability.
Fraction sp³ carbons: 0calculated · chemistry engine; Share of carbon atoms with tetrahedral bonding.
QED drug-likeness: 0.394calculated · chemistry engine; Quantitative estimate of drug-likeness (0–1).

What it is made of

Elements

N Nitrogen6 atoms · 66.6% by mass
C Carbon3 atoms · 28.6% by mass
H Hydrogen6 atoms · 4.8% 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: 9
Total atoms, hydrogen included: 15
Rings: 1
Aromatic rings: 1
Stereocentres: 0
Formal charge: 0

Functional groups

Primary aromatic amine
An –NH2 group attached directly to an aromatic ring, as in aniline. Much less basic than an alkyl amine, because the lone pair is delocalised into the ring.
Aromatic ring
A flat six-membered ring with delocalised electrons.

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 Melamine yet.

Other names for it

The systematic name on this record is 1,3,5-triazine-2,4,6-triamine.

The sources also call it 1,3,5-Triazine-2,4,6-triamine, Cyanuramide, Cyanurotriamide, Cyanurotriamine, Isomelamine, Theoharn, Cyanuric triamide, s-Triazinetriamine, Teoharn, Triaminotriazine, Hicophor PR.

Structurally related

Nothing structurally close to Melamine has a page here yet.

Where these values came from

reference compound database7955
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.