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Merck

04004

Phosphorus, red

≥97.0%

Synonym(s):

P

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About This Item

Empirical Formula (Hill Notation):
P
CAS Number:
7723-14-0
Molecular Weight:
30.97
NACRES:
NA.22
PubChem Substance ID:
57646724
UNSPSC Code:
12141909
EC Number:
231-768-7
MDL number:
MFCD00133771

Key Documents

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SMILES string

[P]

InChI key

OAICVXFJPJFONN-UHFFFAOYSA-N

InChI

1S/P

vapor density

0.02 (vs air)

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

Quality Level

100

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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
GHS02

signalword

Warning

hcodes

H228,H412

Hazard Classifications

Aquatic Chronic 3 - Flam. Sol. 2

Storage Class

4.1B - Flammable solid hazardous materials

wgk

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

Regulatory Listings

Regulatory Listings are mainly provided for chemical products. Only limited information can be provided here for non-chemical products. No entry means none of the components are listed. It is the user’s obligation to ensure the safe and legal use of the product.

Group 2: Flammable solids + Red Phosphorus + Hazardous rank II

fsl

Substances Subject to be Indicated Names

ishl_indicated

Substances Subject to be Notified Names

ishl_notified

04004-6X250G: + 04004-60KG-H: + 04004-BULK: + 04004-6X1KG: + 04004-6X500G: + 04004-1KG: + 04004-500G: + 04004-VAR: + 04004-50KG: + 04004-1.5KG: + 04004-250G:

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Certificates of Analysis (COA)

Lot/Batch Number
STBL3898
STBL3899
STBL2797
STBL2796
STBL1739

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New Evidence Concerning the Structure of Amorphous Red Phosphorus
Hartl H
Angewandte Chemie (International Edition in English), 34(23-24), 2637-2638 (1996)
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)
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)
Special materials in pyrotechnics: V. Military applications of phosphorus and its compounds
Koch E-C
Propellants, Explosives, Pyrotechnics, 33(3), 165-176 (2008)
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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