Phosphorus
P, 30.974 g/mol. Its structure, the values that were measured, the values that were calculated, and where each one came from.
Identifiers
- Molecular formula
- P
- Molecular weight
- 30.974 g/mol
- Exact mass
- 30.973762 g/mol
- IUPAC name
- phosphane
- [P]
- InChI=1S/P
- OAICVXFJPJFONN-UHFFFAOYSA-N
Measured properties
Values somebody obtained from a sample and published. Where two sources report the same property they are both shown, in the units each used — a disagreement between them is information, and averaging it away would be inventing a number neither one gave.
- Boiling Point
- 536 °F at 760 mmHg ; white-yellow ignites at 86 °F in moist air; red ignites at 500 °F. (EPA, 1998)
- 838.9 °F at 760 mmHg (USCG, 1999)
- Melting Point
- 111.2 °F white-yellow; 1094 °F violet; 1094 °F red (EPA, 1998)
- 44.1 °C
- Density
- 2.34 red, 2.36 violet; 2.70 black; 1.8 white-yellow (EPA, 1998)
- 2.691 at 68 °F (USCG, 1999) - Denser than water; will sink
- Solubility
- Black: Insoluble in organic solvents; White: Insoluble in water, slightly soluble in benzene, ethanol, and chloroform, soluble in carbon disulfide; Red: Insoluble in water and organic solvents.
- Solubilities in water: one part/300,000 parts water; in abs alc: one g/400 mL; in abs ether: one g/102 mL; in CHCl3: one g/40 mL; in benzene: one g/35 mL; in CS2: one g/0.8 mL. Solubility in oils: one
- Vapor Pressure
- 0.026 mmHg at 68 °F White-yellow (EPA, 1998)
- 0.026 mm Hg at 20 °C
- Viscosity
- 1.69 cP at 50 °C (liquid)
- Refractive Index
- White: Index of refraction = 2.144
Calculated properties
Derived from the structure rather than from a sample. These are reproducible and they are not measurements: a calculated partition coefficient and a measured one can differ by a long way, and where both exist they are listed apart on purpose.
- Molecular weight
- 30.973762 g/mol
- Exact mass
- 30.973761998 Da
- Polar surface area
- 0 Ų
- Complexity
- 0
- H-bond donors
- 0
- H-bond acceptors
- 0
- logP
- 0.8612
- Topological polar surface area
- 0 Ų
- H-bond donors
- 0
- H-bond acceptors
- 0
- Rotatable bonds
- 0
- Molar refractivity
- 6.92 cm³/mol
- Fraction sp³ carbons
- 0
- QED drug-likeness
- 0.3468
What it is made of
Elements
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
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
Other names for it
The systematic name on this record is phosphane.
The sources also call it Phosphorus 6, Phosphorus 8, Phosphorus 6C, Phosphorus 30, Phosphorus 30C, Phosphorus 30X, Phosphorus 31, Cough Sore Throat, Phosphorus 200C, Phosphorus 200ck, Phosphorous (NOS), Phosphorus 7130.
Structurally related
Seen alongside it in reaction records
Molecules that appear in the same recorded reactions as Phosphorus. 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.
(9aRS)-2-benzyl-6-chloro-9,9a-dihydro-4-phenyl-benz[f]isoindoline
used as a reactant
C₂₅H₂₂ClN, 371.911 g/mol.
(3aRS,4RS,9aSR)-2-benzyl-6-chloro-3a,4,9,9a-tetrahydro-4-phenyl-benz[f]isoindoline
formed as a product
C₂₅H₂₄ClN, 373.927 g/mol.
1,3-Dichloroisoquinoline
used as a reactant
C₉H₅Cl₂N, 198.052 g/mol.
Where these values came from
reference compound database5462309
chemistry engine
What this page does not claim
The identifiers are what the source record holds, copied rather than recomputed. Measured values are reported as their source gave them, units and all; calculated values are marked as calculated and are not measurements. Where a field is absent the page says so, because a blank cell reads as a zero and a guessed value reads as a fact.
Nothing here is a hazard assessment, a purity statement or advice about handling a sample. A flash point quoted from a safety database is a number somebody published, not a judgement by us about whether this molecule is safe for what you intend.