SODIUM CYCLOPENTADIENIDE Chemical Properties

Melting point:

172 °C

Density 

0.946 g/mL at 20 °C

Flash point:

1 °F

storage temp. 

2-8°C

form 

Liquid

color 

dark red

Water Solubility 

Reacts with water.

Sensitive 

Air & Moisture Sensitive

BRN 

969542

Exposure limits

ACGIH: TWA 50 ppm; STEL 100 ppm (Skin)
OSHA: TWA 200 ppm(590 mg/m3)
NIOSH: IDLH 2000 ppm; TWA 200 ppm(590 mg/m3); STEL 250 ppm(735 mg/m3)

InChI

InChI=1S/C5H5.Na/c1-2-4-5-3-1;/h1-5H;

InChIKey

PDTZVKVFAJGNRV-UHFFFAOYSA-N

SMILES

C1([Na])C=CC=C1

CAS DataBase Reference

4984-82-1(CAS DataBase Reference)

EPA Substance Registry System

Sodium, 2,4-cyclopentadien-1-yl- (4984-82-1)

Safety Information

Hazard Codes 

F,Xi,C

Risk Statements 

11-19-34-40-37-14/15

Safety Statements 

16-26-36/37/39-45-43

RIDADR 

UN 1993 3/PG 2

WGK Germany 

3

F 

1-10

TSCA 

TSCA listed

HazardClass 

4.3

PackingGroup 

II

HS Code 

29319090

Storage Class

4.3 - Hazardous materials which set free flammable gases upon contact with water

Hazard Classifications

Carc. 2
Eye Dam. 1
Flam. Liq. 2
Skin Corr. 1B
STOT SE 3
Water-react 1

MSDS

• Language:English Provider:SigmaAldrich

SODIUM CYCLOPENTADIENIDE Usage And Synthesis

Chemical Properties

White to greyish or yellowish powder

Uses

Sodium cyclopentadienide is used as a reagent for the preparation of metallocenes. It is used to prepare Cp-cobaltacycles from diphenylphosphinoalkynes and CoCl(PPh3)3. It is a useful reagent for the preparation of metallocenes and cyclopentadienyl metal complexes.

reaction suitability

reagent type: ligand

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