Sulfur

An element / simple molecule, S, 32.067 g/mol. Boiling point 444.61 °C, melting point 95.3 °C ; 115.21 °C, as published.

verified recordElement / simple molecule8 measured properties

Identifiers

Molecular formula: S
Molecular weight: 32.067 g/mol
Exact mass: 31.972071 g/mol
IUPAC name: sulfane
SMILES: [S]
InChI: InChI=1S/S
InChIKey: NINIDFKCEFEMDL-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: 444.61 °Cmeasured · Hazardous Substances Data Bank (HSDB); 445 °Cmeasured · ILO-WHO International Chemical Safety Cards (ICSCs)
Melting Point: 95.3 °C /(Sulfur rhombic transforms to monoclinic)/; 115.21 °C /Sulfur (monoclinic)/measured · Hazardous Substances Data Bank (HSDB); Ignites in air above 261 °C, in oxygen below 260 °C, burning to the dioxide; combines readily with hydrogen; combines in the cold with fluorine, chlorine, and bromine; combines with carbon at high temmeasured · Hazardous Substances Data Bank (HSDB)
Density: 2.07 g/cu cm (Sulfur (rhombic)/; 2.00 (Sulfur (monoclinic)/measured · Hazardous Substances Data Bank (HSDB); Amber-colored crystals. The stable at ordinary temperature, density: 2.06; when heated to 94.5 °C becomes opaque owing to formation of monoclinic sulfur /alpha-Sulfur/measured · Hazardous Substances Data Bank (HSDB)
Solubility: For more Solubility (Complete) data for Sulfur, Elemental (13 total), please visit the HSDB record page.measured · Hazardous Substances Data Bank (HSDB); For more Solubility (Complete) data for Sulfur, Elemental (13 total), please visit the HSDB record page.measured · Hazardous Substances Data Bank (HSDB)
Vapor Pressure: 3.95X10-6 mm Hg at 30.4 °Cmeasured · Hazardous Substances Data Bank (HSDB)
Flash Point: 405 °F (207 °C) (Closed cup)measured · Hazardous Substances Data Bank (HSDB); 160 °C c.c.measured · ILO-WHO International Chemical Safety Cards (ICSCs)
Viscosity: Dynamic viscosity of liquid (Pa.s): 0.17 at 120 °C; 0.008 at 140 °C; 0.0064 at 158 °C; 5.952 at 160 °C; 86.304 at 180 °C; 93.0 at 187.8 °C; 78.864 at 200 °C; 3.72 at 300 °Cmeasured · Nehb W, Vydra K; Ullmann's Encyclopedia of Industrial Chemistry. 7th ed. (1999-2011). New York, NY: John Wiley & Sons; Sulfur. Online Posting Date: 15 Dec 2006
Refractive Index: Index of refraction: 1.947 /alpha/; 2.038 /beta/measured · Lewis, R.J. Sr.; Hawley's Condensed Chemical Dictionary 15th Edition. John Wiley & Sons, Inc. New York, NY 2007., p. 1191

Calculated properties

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

Molecular weight: 32.07 g/molcalculated · reference compound database; Average mass of one molecule, from reference compound database.
Exact mass: 31.97207117 Dacalculated · reference compound database; Mass of the most common isotopic form.
XLogP3: 0.5calculated · reference compound database; Estimated oil/water partition, computed by reference compound database.
Polar surface area: 1 Å²calculated · reference compound database; Polar surface area as computed by reference compound database.
Complexity: 0calculated · reference compound database; A rough measure of how intricate the structure is.
H-bond donors: 0calculated · reference compound database
H-bond acceptors: 1calculated · reference compound database
logP: 0.6482calculated · chemistry engine; Estimated preference for oil over water. Higher means more oil-like.
Topological polar surface area: 0 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: 0calculated · chemistry engine; Atoms that can accept a hydrogen bond.
Rotatable bonds: 0calculated · chemistry engine; Single bonds the molecule can freely twist around.
Molar refractivity: 7.591 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: 0.3675calculated · chemistry engine; Quantitative estimate of drug-likeness (0–1).

What it is made of

Elements

S Sulfur1 atom · 100.0% 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: 1
Total atoms, hydrogen included: 1
Rings: 0
Aromatic rings: 0
Stereocentres: 0
Formal charge: 0

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 Sulfur yet.

Other names for it

The systematic name on this record is sulfane.

The sources also call it Anacardium, Bioelements, Armarita, Celesty, Naturasil, Prosacea, Sulfaderm, DermaWash, Motto, Acne Treatment, alpha-Sulfur, Spot Correction.

Structurally related

Nothing structurally close to Sulfur has a page here yet.

Seen alongside it in reaction records

Molecules that appear in the same recorded reactions as Sulfur. This says nothing about structure: most of them are the bases, solvents, ligands and catalysts the chemistry needed, and they are here because somebody put them in the same flask.

1,3-Dibenzyldihydro-1H-furo[3,4-d]-imidazole-2,4-(3H, 3aH)dione

used as a reactant

C₁₉H₁₈N₂O₃, 322.364 g/mol.

1,3-Dibenzyltetrahydro-1h-thieno[3,4-d]imidazole-2,4-dione

formed as a product

C₁₉H₁₈N₂O₂S, 338.432 g/mol.

Where these values came from

reference compound database5362487
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.