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04004

Sigma-Aldrich

Phosphorus, red

≥97.0%

Synonym(s):

P

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About This Item

Empirical Formula (Hill Notation):
P
CAS Number:
7723-14-0
Molecular Weight:
30.97
EC Number:
231-768-7
MDL number:
MFCD00133771
UNSPSC Code:
12141909
PubChem Substance ID:
57646724
NACRES:
NA.22

vapor density

0.02 (vs air)

Quality Level

100

vapor pressure

0.03 mmHg ( 21 °C)
1 mmHg ( 76.6 °C)

Assay

≥97.0%

autoignition temp.

500 °F

reaction suitability

reaction type: Buchwald-Hartwig Cross Coupling Reaction
reaction type: Heck Reaction
reaction type: Hiyama Coupling
reaction type: Negishi Coupling
reaction type: Sonogashira Coupling
reaction type: Stille Coupling
reaction type: Suzuki-Miyaura Coupling
reagent type: catalyst

resistivity

10 μΩ-cm, 20°C

mp

416 °C (subl.) (lit.)

density

2.34 g/mL at 25 °C (lit.)

cation traces

Fe: ≤2000 mg/kg

storage temp.

room temp

SMILES string

[P]

InChI

1S/P

InChI key

OAICVXFJPJFONN-UHFFFAOYSA-N

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General description

Red phosphorus is the most common allotrope ofphosphorus due to its relative stability compared to white phosphorus. It has a variety of uses including, but notlimited to, use as a catalyst, battery anode, flame retardant, and igniter.

Application

Red phosphorus can be used as a:
  • Photocatalyst for the formation of H2 from water.
  • Catalyst in the synthesis of tris(2-pyridyl)phosphine by reacting with 2-bromopyridine in the presence of a base.
  • Flame retardant along with aluminum oxide in recycled poly(ethylene terephthalate).
  • Anode material in combination with carbon composites for sodium-ion batteries.

Pictograms

Flame
GHS02

Signal Word

Warning

Hazard Statements

H228,H412

Hazard Classifications

Aquatic Chronic 3 - Flam. Sol. 2

Storage Class Code

4.1B - Flammable solid hazardous materials

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

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Certificates of Analysis (COA)

Lot/Batch Number
STBL3898
STBL3899
STBL2797
STBL2796
STBL1739

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Phospham-A stable phosphorus-rich flame retardant
Weil EDD and Patel NG
Fire and Materials, 18(1), 1-7 (1994)
An amorphous red phosphorus/carbon composite as a promising anode material for sodium ion batteries
Kim Y, et al.
Advanced Materials, 25(22), 3045-3049 (2013)
New Evidence Concerning the Structure of Amorphous Red Phosphorus
Hartl H
Angewandte Chemie (International Edition in English), 34(23-24), 2637-2638 (1996)
Expedient one-pot organometallics-free synthesis of tris (2-pyridyl) phosphine from 2-bromopyridine and elemental phosphorus
Trofimov BA, et al.
Tetrahedron Letters, 53(19), 2424-2427 (2012)
Red phosphorus/aluminium oxide compositions as flame retardants in recycled poly (ethylene terephthalate
Laoutid F, et al.
Polymer Degradation and Stability, 82(2), 357-363 (2003)
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