Tetrabutyl orthosilicate Property

Melting point:

-80 °C

Boiling point:

275 °C (lit.)

Density 

0.899 g/mL at 25 °C (lit.)

vapor density 

>1 (vs air)

refractive index 

n20/D 1.413(lit.)

Flash point:

174 °F

storage temp. 

Sealed in dry,Room Temperature

form 

liquid

Specific Gravity

0.9

color 

colorless

Water Solubility 

reacts

Sensitive 

Moisture Sensitive

Hydrolytic Sensitivity

7: reacts slowly with moisture/water

BRN 

1709274

CAS DataBase Reference

4766-57-8(CAS DataBase Reference)

NIST Chemistry Reference

Tetrabutyl silicate(4766-57-8)

EPA Substance Registry System

Silicic acid (H4SiO4), tetrabutyl ester (4766-57-8)

Safety

Hazard Codes 

Xi

Risk Statements 

36/37/38

Safety Statements 

26-36/37/39-37/39

RIDADR 

UN2924

WGK Germany 

3

F 

10-21

TSCA 

Yes

HazardClass 

8

PackingGroup 

III

HS Code 

29209090

Hazard and Precautionary Statements (GHS)

Symbol(GHS)

Signal word

Warning

Hazard statements

H315Causes skin irritation

H319Causes serious eye irritation

H335May cause respiratory irritation

Precautionary statements

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

P264Wash hands thoroughly after handling.

P264Wash skin thouroughly after handling.

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

P321Specific treatment (see … on this label).

P332+P313IF SKIN irritation occurs: Get medical advice/attention.

P337+P313IF eye irritation persists: Get medical advice/attention.

Tetrabutyl orthosilicate Chemical Properties,Usage,Production

Introduction

The ethyl group of ethyl silicate is replaced by N-butyl, so the speed of hydrolysis is even slower than N-propyl silicate, and in addition to a cross-linking agent for silicon rubber, and a modifying agent for organic and inorganic resins, it can also be used as a heating medium or cooling medium by making it a condensate. There are also hopes for applications to electron donors in Ziegler-Natta catalysts.

Chemical Properties

Colorless transparent liquid

Uses

It is an important organic intermediate used in agrochemicals, pharmaceuticals and dyestuff fields and also in the alkylation and alkoxylation of silane.