04004

Sigma-Aldrich

Phosphorus, red

≥97.0%

Empirical Formula (Hill Notation):
P
CAS Number:
Molecular Weight:
30.97
EC Number:
MDL number:
PubChem Substance ID:
NACRES:
NA.22
Pricing and availability is not currently available.

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
reagent type: ligand

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

functional group

phosphine

storage temp.

2-8°C

SMILES string

[P]

InChI

1S/P

InChI key

OAICVXFJPJFONN-UHFFFAOYSA-N

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General description

Red phosphorus is the most common allotrope of phosphorus. It exists in an amorphous form and found to be more stable than white phosphorus. It is used in organic synthesis and chemical warfare including igniters, incendiaries, screening smoke ammunition and smoke signal. Red phosphorus is also used as a flame retardant in many thermoplastics and thermosetting plastics.

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

Signal Word

Danger

Hazard Statements

Precautionary Statements

Personal Protective Equipment

dust mask type N95 (US),Eyeshields,Gloves

RIDADR

UN1338 - class 4.1 - PG 3 - Phosphorus, amorphous

WGK Germany

WGK 2

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Certificate of Analysis
Certificate of Origin
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)
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)
Phospham-A stable phosphorus-rich flame retardant
Weil EDD and Patel NG
Fire and Materials, 18(1), 1-7 (1994)
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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