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About This Item

Empirical Formula (Hill Notation):
P
CAS Number:
Molecular Weight:
30.97
EC Number:
MDL number:
UNSPSC Code:
12141909
PubChem Substance ID:
NACRES:
NA.22
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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.

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 of phosphorus due to its relative stability compared to white phosphorus. It has a variety of uses including, but not limited 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

Signal Word

Warning

Hazard Statements

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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