ETHYL SILICATE

PRODUCT IDENTIFICATION
CAS NO. 78-10-4

ETHYL SILICATE

EINECS NO. 201-083-8
FORMULA (C2H5)4SiO4
MOL WT. 208.33

H.S. CODE

 2920.90.5090

TOXICITY

 Oral Rat LD50: 6270mg/kg
SYNONYMS Tetraethoxysilane; Tetraethyl orthosilicate; TEOS;
Ethyl orthosilicate; Silicic acid tetraethyl ester; Tetraethyl ester silicic acid; Tetraethyl Silicate; Ortosilicato de tetraetilo (Spanish); Orthosilicate de tétraéthyle (French); Silicon ethoxide; Silicon tetraethoxide;
SMILES [Si](OCC)(OCC)(OCC)OCC

CLASSIFICATION

 

PHYSICAL AND CHEMICAL PROPERTIES
PHYSICAL STATE clear to yellow liquid, alcohol-like odor

MELTING POINT

 -77 C
BOILING POINT 165 -166 C
SPECIFIC GRAVITY 0.94

SOLUBILITY IN WATER

 Decomposes
pH  
VAPOR DENSITY

7.2

log Pow 0.04 (Octanol-water)
VAPOR PRESSURE 1.88 (mmHg at 25 C)
HENRY'S LAW 9.44E-09 (atm-m3/mole at 25 C)
OH RATE 2.47E-11 (cm3/molecule-sec at 25 C Atmospheric )
AUTOIGNITION  

REFRACTIVE INDEX

  
NFPA RATINGS Health: 1; Flammability: 3; Reactivity: 2; Special Hazard: -W-
FLASH POINT 45 C
STABILITY Stable under ordinary conditions. Moisture sensitive.

GENERAL DESCRIPTION & APPLICATIONS

Wikipedia Linking: http://en.wikipedia.org/wiki/Tetraethyl_orthosilicate

Material Safety Data Sheet: http://www.chemcas.com

Google Scholar Search: http://scholar.google.com

Applications:

  • Weatherproofing and preservative for stone, mortars, brick, masonry and cements
  • Chemical-resistant agen for paints, lacquers
  • Protective coatings
  • Bonding agent
  • Metal complex for bioactive glasses
SALES SPECIFICATION
APPEARANCE

clear to yellow liquid

SiO2
28.0 - 30.0%
32.0 - 34.0%
40.0 - 42.0%
DENSITY
0.93 - 0.94 (g/cm3)
0.9 7-1.0 (g/cm3)
1.04 -1.07 (g/cm3)
VISCOSITY
0.97
1 - 3
4 - 7
FREE ACID
0.01% max
0.04% max
0.08% max
TRANSPORTATION
PACKING 200kgs in drum
HAZARD CLASS 3 (Packing Group: III)
UN NO. 1292
OTHER INFORMATION
Hazard Symbols: XN F, Risk Phrases: 10-36/37-20, Safety Phrases: 24/25