2,8,9-Tri-i-butyl-2,5,8,9-tetraaza-1-phosphabicyclo[3.3.3]undecane Property

Boiling point:

397.4±41.0 °C(Predicted)

Density 

0.964 g/mL at 25 °C(lit.)

refractive index 

n20/D 1.5020(lit.)

Flash point:

155 °F

storage temp. 

under inert gas (nitrogen or Argon) at 2-8°C

pka

8.90±0.20(Predicted)

form 

Liquid

color 

Clear colorless to yellow

Sensitive 

air sensitive, moisture sensitive

Safety

Hazard Codes 

F,Xn

Risk Statements 

36/37/38-67-66-22-19-11

Safety Statements 

26-36/37/39-16

RIDADR 

UN1155 - class 3 - PG 1 - Diethyl ether

WGK Germany 

3

HS Code 

29310099

Hazard and Precautionary Statements (GHS)

Symbol(GHS)

Signal word

Danger

Hazard statements

H225Highly Flammable liquid and vapour

H302Harmful if swallowed

H319Causes serious eye irritation

H336May cause drowsiness or dizziness

Precautionary statements

P210Keep away from heat/sparks/open flames/hot surfaces. — No smoking.

P261Avoid breathing dust/fume/gas/mist/vapours/spray.

P305+P351+P338IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.

2,8,9-Tri-i-butyl-2,5,8,9-tetraaza-1-phosphabicyclo[3.3.3]undecane Chemical Properties,Usage,Production

Uses

Exceedingly strong, non-ionic Brønsted and Lewis base useful in a variety of organic transformations.

Chemical Properties

Clear colorless to yellow liquid

Uses

Triisobutylazaphosphatrane is reported to be used as a catalyst for the preparation of biaryl and alkenylarenes via Stille cross-coupling reaction. It also acts a catalyst for the synthesis of α-aryl-substituted nitriles.