Element Phosphorus

Phosphorus ElementIt is a chemical element with the symbol P and atomic number 15.
Elemental phosphorus exists in two major forms, white phosphorus and red phosphorus, but because it is highly reactive, phosphorus is never found as a free element on Earth.
It has a concentration in the Earth’s crust of about one gram per kilogram (compare copper at about 0.06 grams). With few exceptions, minerals containing phosphorus are in the maximally oxidized state as inorganic phosphate rocks

Names and Identifiers

Chemical Formula:P
Molecular Weight:30.974 g/mol
EC Number :231-768-7
MDL Number:MFCD00133771
Color:colourless/red/silvery white/ pale yellow
Other Names:Phosphore, Phosphor, Fosforo
PubChem CID:24404
IUPAC Name:Phosphorus
Canonical SMILES:[P]
ICSC Number:n/a

Physical & Chemical Properties

Density:1.823  g/cm³
Boiling Point:553.7 K ​(280.5 °C, ​536.9 °F)
Melting Point:317.3 K ​(44.15 °C, ​111.5 °F)
Molecular Formula:P
Flash Point:30°C
Exact Mass:30.973761
Symbol:Globally Harmonized System of Classification
Signal Word:Danger
Hazard Statements:H228-H412
Precautionary Statements:P210-P370 + P378
Hazard Codes:F,C,N,T+
Risk Phrases:R11
Safety Phrases:S7-S43-S61-S43C-S45-S38-S26-S5-S27-S6
RIDADR:UN 1338 4.1/PG 3
WGK Germany:2
Packaging Group:III
Hazard Class:4.1

Naturally occurring isotopes

IsotopeMass/DaNatural abundance (atom %)Nuclear spin (I)Magnetic moment (μ/μN)
31P30.9737620 (6)1001/21.13160

Radiosotope data

IsotopeMass/DaHalf-lifeMode of decayNuclear spinNuclear magnetic moment
29P28.9818014.14 sEC to 29Si1/21.2349
30P29.9783142.50 mEC to 30Si1
32P31.97361514.28 dβ to 32S1-0.2524
33P32.97172525.3 dβ to 33S1/2

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