2-Naphthalenesulfonic acid

An aromatic sulfonic acid, C10H8O3S, 208.238 g/mol.

verified recordOrganic — aromatic sulfonic acid2 measured properties

Identifiers

Molecular formula: C₁₀H₈O₃S
Molecular weight: 208.238 g/mol
Exact mass: 208.019415 g/mol
SMILES: O=S(=O)(O)c1ccc2ccccc2c1
InChI: InChI=1S/C10H8O3S/c11-14(12,13)10-6-5-8-3-1-2-4-9(8)7-10/h1-7H,(H,11,12,13)
InChIKey: KVBGVZZKJNLNJU-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.

Vapor Pressure: 0.00000002 [mmHg]measured · reference compound database
LogP: 1.07measured · reference compound database

Calculated properties

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

logP: 2.0865calculated · chemistry engine; Estimated preference for oil over water. Higher means more oil-like.
Topological polar surface area: 54.37 Å²calculated · chemistry engine; Surface area from polar atoms; relates to how easily a molecule crosses membranes.
H-bond donors: 1calculated · chemistry engine; Atoms that can donate a hydrogen bond.
H-bond acceptors: 2calculated · chemistry engine; Atoms that can accept a hydrogen bond.
Rotatable bonds: 1calculated · chemistry engine; Single bonds the molecule can freely twist around.
Molar refractivity: 53.7626 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: 0.7299calculated · chemistry engine; Quantitative estimate of drug-likeness (0–1).

What it is made of

Elements

C Carbon10 atoms · 57.7% by mass
O Oxygen3 atoms · 23.0% by mass
S Sulfur1 atom · 15.4% by mass
H Hydrogen8 atoms · 3.9% 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: 14
Total atoms, hydrogen included: 22
Rings: 2
Aromatic rings: 2
Stereocentres: 0
Formal charge: 0

Functional groups

Sulfonic acid
A sulfur bonded to three oxygens including an –OH.
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 2-Naphthalenesulfonic acid yet.

Other names for it

No systematic name is recorded.

The sources also call it Naphthalene-2-sulfonic acid, beta-Naphthylsulfonic acid, beta-Naphthalenesulfonic acid, Naphthalene-2-sulphonic acid, 2-Naphthalenesulfonic acid, monohydrate, 2-Sulfonaphthalene, Kyselina 2-naftalensulfonova, 2-Naphthylsulfonic acid, .beta.-Naphthalenesulfonic acid, 2-Naphthalene Sulfonic Acid, Kyselina 2-naftalensulfonova [Czech], 2-naphtalenesulfonic acid.

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.

(1,1'-Biphenyl)-4-sulfonic acid

C12H10O3S

Where these values came from

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.