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1,3-Bis(3-aminopropyl)tetramethyldisiloxane

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1,3-Bis(3-aminopropyl)tetramethyldisiloxane Basic information

Product Name:
1,3-Bis(3-aminopropyl)tetramethyldisiloxane
Synonyms:
  • 1,3-BIS(AMINOPROPYL)TETRAMETHYLDISILOXANE
  • 1,3-BIS(3-AMINOPROPYL)-1,1,3,3-TETRAMETHYLDISILOXANE
  • 1,3-BIS(3-AMINOPROPYL)TETRAMETHYLDISILOXANE
  • BIS(3-AMINOPROPYL)TETRAMETHYLDISILOXANE
  • BIS(AMINOPROPYL)TETRAMETHYLDISILOXANE
  • TETRAMETHYL-1,3-BIS(3-AMINOPROPYL)DISILOXANE
  • 1-Propanamine,3,3’-(1,1,3,3-tetramethyl-1,3-disiloxanediyl)bis-
  • 3,3’-(1,1,3,3-tetramethyl-1,3-disiloxanediyl)bis-1-propanamin
CAS:
2469-55-8
MF:
C10H28N2OSi2
MW:
248.51
EINECS:
219-588-7
Product Categories:
  • Si (Classes of Silicon Compounds)
  • Siloxanes
  • Si-O Compounds
Mol File:
2469-55-8.mol
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1,3-Bis(3-aminopropyl)tetramethyldisiloxane Chemical Properties

Boiling point:
132 °C11 mm Hg(lit.)
Density 
0.901 g/mL at 20 °C(lit.)
vapor pressure 
0.27Pa at 20℃
refractive index 
n20/D 1.451
Flash point:
91°C
storage temp. 
Inert atmosphere,2-8°C
form 
clear liquid
pka
10.96±0.10(Predicted)
Specific Gravity
0.897
color 
Colorless to Light yellow to Light orange
Water Solubility 
Slightly soluble in water.
Sensitive 
Air Sensitive
Hydrolytic Sensitivity
4: no reaction with water under neutral conditions
BRN 
1760876
InChIKey
GPXCORHXFPYJEH-UHFFFAOYSA-N
LogP
1.3 at 20℃
CAS DataBase Reference
2469-55-8(CAS DataBase Reference)
EPA Substance Registry System
1-Propanamine, 3,3'-(1,1,3,3-tetramethyl-1,3-disiloxanediyl)bis- (2469-55-8)
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Safety Information

Hazard Codes 
C
Risk Statements 
34
Safety Statements 
26-28-36/37/39-45-36/37/38
RIDADR 
UN 3267 8/PG 2
WGK Germany 
3
RTECS 
JM9235000
10-21
TSCA 
Yes
HazardClass 
8
PackingGroup 
III
HS Code 
29319090
Toxicity
LD50 ipr-mus: 80 mg/kg RCRVAB 38,975,69

MSDS

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1,3-Bis(3-aminopropyl)tetramethyldisiloxane Usage And Synthesis

Chemical Properties

Clear colorless to pale yellow liquid

Uses

1,3-Bis(aminopropyl)tetramethyldisiloxane is used as a curing agent for epoxy molding compounds, which is utilized for high-reliability semiconductor devices. It is also used to prepare siloxane- urea copymers from 4,4?-diphenylmethane diisocyanate.

Uses

1,3-Bis(3-aminopropyl)tetramethyldisiloxane is an endcapper for the synthesis of aminopropyl-terminated silicone fluids and for the production of silicone-epoxy and silicone polyimide copolymers especially useful in electronics applications. A unique manufacturing process insures that It has only gamma - aminopropyl substitution and none of the beta isomer. This is expected to give better reactivity in copolymer synthesis and improved heat stability.
1,3-Bis(3-aminopropyl)tetramethyldisiloxane is an alkaline material due to its amine reactive groups. Care should be exercised in handling it to prevent contact with skin and eyes. Wear safety glasses with side shields and rubber gloves when handling.

Production Methods

A glass flask with a stirrer, reflux condenser, thermometer, and dropping funnel was charged with N, N-bis(trimethylsilyl)allylamine. A 4% isopropyl alcohol solution of H2 PtCl6.6H2 O. From the funnel, dimethyl ethoxy silane was added dropwise to the flask at 70° C. over 3 hours for hydrosilylation reaction. The reaction solution was ripened for one hour at the temperature. After adding ethanol and dodecylbenzenesulfonic acidd, the reaction solution was refluxed for 6 hours, completing the desilylation reaction. The reaction solution was transferred to a distillation apparatus where the ethanol and trimethyl ethoxy silane were distilled under atmospheric pressure. Water was added to the remainder, which was refluxed for 2 hours. Vacuum distillation was then carried out to collect 1,3-Bis(3-aminopropyl)tetramethyldisiloxane.

Flammability and Explosibility

Non flammable

Safety Profile

Poison by intraperitoneal route. When heated to decomposition it emits toxic vapors of NOx.

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