04004

Phosphorus, red

≥97.0%

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

Properties

• 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; 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

Description

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.

Safety Information

• Pictograms: GHS02
• Signal Word: Warning
• Hazard Statements: H228 - H412
• Precautionary Statements: P210 - P240 - P241 - P273 - P280 - P370 + P378
• 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