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04004

Sigma-Aldrich

Phosphorus, red

≥97.0%

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Synonym(s):
P
Empirical Formula (Hill Notation):
P
CAS Number:
Molecular Weight:
30.97
EC Number:
MDL number:
PubChem Substance ID:
NACRES:
NA.22

vapor density

0.02 (vs air)

Quality Level

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.

2-8°C

SMILES string

[P]

InChI

1S/P

InChI key

OAICVXFJPJFONN-UHFFFAOYSA-N

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1 of 4

This Item
29822023210679609
vibrant-m

04004

Phosphorus, red

vibrant-m

298220

Phosphorus pentoxide

vibrant-m

232106

Phosphorus pentasulfide

vibrant-m

79609

Phosphorus pentoxide

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

reaction suitability

-

reaction suitability

-

reaction suitability

-

mp

416 °C (subl.) (lit.)

mp

340 °C (lit.)

mp

280-284 °C (lit.)

mp

340 °C (lit.)

density

2.34 g/mL at 25 °C (lit.)

density

2.3 g/mL at 25 °C (lit.)

density

2.09 g/mL at 25 °C (lit.)

density

2.3 g/mL at 25 °C (lit.)

cation traces

Fe: ≤2000 mg/kg

cation traces

NH4+: ≤0.01%, heavy metals (as Pb): ≤0.01%

cation traces

-

cation traces

As: ≤100 mg/kg, Ca: ≤10 mg/kg, Cd: ≤5 mg/kg, Co: ≤5 mg/kg, Cr: ≤5 mg/kg, Cu: ≤5 mg/kg, Fe: ≤5 mg/kg, K: ≤50 mg/kg, Mg: ≤5 mg/kg, Mn: ≤5 mg/kg, NH4+: ≤10 mg/kg, Na: ≤50 mg/kg, Ni: ≤5 mg/kg, Pb: ≤5 mg/kg, Zn: ≤5 mg/kg

storage temp.

2-8°C

storage temp.

-

storage temp.

-

storage temp.

-

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

signalword

Warning

Hazard Classifications

Aquatic Chronic 3 - Flam. Sol. 2

Storage Class

4.1B - Flammable solid hazardous materials

wgk_germany

WGK 3

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

dust mask type N95 (US), Eyeshields, Gloves, type P3 (EN 143) respirator cartridges


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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)
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)
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)
Special materials in pyrotechnics: V. Military applications of phosphorus and its compounds
Koch E-C
Propellants, Explosives, Pyrotechnics, 33(3), 165-176 (2008)

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