Skip to Content
Merck
CN

Key Documents

View All Documentation

04004

Phosphorus, red

≥97.0%

Synonym(s):

P

Sign In to View Organizational & Contract Pricing.

Select a Size

Change View

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
Technical Service
Need help? Our team of experienced scientists is here for you.
Let Us Assist

vapor density

0.02 (vs air)

Quality Segment

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

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.

Still not finding the right product?

Explore all of our products under Phosphorus, red

pictograms

Flame
GHS02

signalword

Warning

hcodes

H228,H412

Hazard Classifications

Aquatic Chronic 3 - Flam. Sol. 2

Storage Class

4.1B - Flammable solid hazardous materials

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

dust mask type N95 (US), Eyeshields, Gloves, type P3 (EN 143) respirator cartridges

Choose from one of the most recent versions:

Certificates of Analysis (COA)

Lot/Batch Number

Don't see the Right Version?

If you require a particular version, you can look up a specific certificate by the Lot or Batch number.

Search for a COA

Already Own This Product?

Find documentation for the products that you have recently purchased in the Document Library.

Visit the Document Library