04004

Phosphorus, red

≥97.0%

• Synonym(s): P
• 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

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
• 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

Description

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.

Safety Information

• pictograms: GHS02
• signalword: Warning
• hcodes: H228,H412
• pcodes: P210 - P240 - P241 - P273 - P280 - P370 + P378
• 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