Tetraethyl Orthosilicate CAS 78-10-4
26 Inquiries
78-10-4
Industrial Grade
99%
shanghai
Chemfine
200kg
2026-04-30
Organic Intermediate
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Product Description
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Seller Information
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Inquiry History
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DescriptionBasic Info
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Product Name:
Tetraethoxysilane
Other Name:Silicic acid (H4SiO4),tetraethyl ester;Ethyl silicate ((EtO)4Si);Ethyl orthosilicate;Silane,tetraethoxy-;TEOS;Tetraethyl silicate;Tetraethoxysilane;Silicon ethoxide;Silicon tetraethoxide;Dynasil A;Tetraethoxysilicon;ES 28 (ester);Tetraethyl orthosilicate;ES 28;ES 100 (silicate);Silikan L;SI 42;TES 28;Silicon tetraethoxide (Si(OEt)4);Silicon ethoxide (Si(OEt)4);ES 100;Conservare OH;Ethyl silicate 28;TSL 8124;Tetraethoxysilicon(IV);KBE 04;LS 2430;Silicon tetraethoxide (Si(OC2H5)4);ES 140;Colcoat 6P;Ethyl Silicate 45;ES 45;T 1807;LS 2340;PETEOS;NSC 4790;KBM 06;T 0100;Unisilan 74;ES 28P;T 0100 (ester);Remmers 300;KIEM-Silex OH;Ethyl silicate PHASE;Ethyl silicate 28P;TSLB 124;PG 121;WD 932;TEOS Pure;SOTEOS;AY 43-101;Z 6697;Ethyl Silicate A;Silres BSOH 100;N 100;N 100 (silicate);Silquest TEOS Pure;Estel 1000;Silquest SIT 7110.0;Si 28 (coupling agent);Si 28;Dynasylan TEOS-UHP;Ekos 1;Dynasylan A;T 1126;E 28;SSG-HB 21N;Dynasylan Silbond Condensed;ECOS 1;Tanapel DSR;SIT 7110.0;ADC 68;Silikat TES 28;KBE 14;827300-06-1;1239977-99-1;1421840-08-5
CAS No.:78-10-4
UN No.:1292
Molecular Formula:C8H20O4Si
InChIKeys:InChIKey=BOTDANWDWHJENH-UHFFFAOYSA-N
Molecular Weight:208.32700
Exact Mass:208.33
EC Number:201-083-8
UNII:42064KRE49
ICSC Number:0333
NSC Number:4790
UN Number:1292
DSSTox ID:DTXSID6026450
Color/Form:Colorless liquid|Water-white
HScode:2920909090
Categories:
Characteristics-
PSA:
36.92000
XLogP3:1.56800
Appearance:clear colorless liquid with a faint odor
Density:0.933 g/cm3 @ Temp: 20 °C
Melting Point:-82.5 °C
Boiling Point:168.8 °C @ Press: 760 Torr
Flash Point:45ºC
Refractive Index:n20/D 1.382(lit.)
Water Solubility:Hydrolysis
Storage Conditions:Flammables area
Vapor Pressure:<1 mm Hg ( 20 °C)
Vapor Density:7.2 (vs air)
Toxicity:LD50 orally in Rabbit: 6270 mg/kg LD50 dermal Rabbit 5860 mg/kg
Flammability characteristics:Class IC Flammable Liquid: Fl.P. at or above 73°F and below 100°F.
Explosive limit:Explosive limits , vol% in air: 1.3-23
Odor:SHARP, ESTER-LIKE ODOR|Faint odor|Sharp alcohol-like odor
Henrys Law Constant:Henry's Law constant = 2.0X10-5 atm-cu m/mole at 25 °C (est)
Experimental Properties:HYDROLYZED TO AN ADHESIVE FORM OF SILICA; WT/GAL 7.8 LB @ 20 °C|Slowly decomposed by water|Without special precautions, tetraethoxysilane hydrolyzes to a gel in about 10 days|Hydroxyl radical reaction rate constant = 2.5X10-11 cu cm/molecule-sec at 25 °C (est)
Air and Water Reactions:Flammable. Practically insoluble in water. Reacts slowly with water to form silica and ethyl alcohol [Merck].
Reactive Group:Siloxanes
Reactivity Alerts:Highly Flammable
Reactivity Profile:ETHYL SILICATE reacts exothermically with acids Strong oxidizing acids may cause a reaction that is sufficiently exothermic to ignite the reaction products. May generate with caustic solutions. May generate flammable hydrogen with alkali metals and hydrides.
Heat of Combustion:-12,000 BTU/LB = -6,700 CAL/G = -280X10+5 J/KG (EST)
Ionization Potential:9.77 eV
Flammable Limits:Lower flammable limit: 1.3% by volume; Upper flammable limit: 23% by volume|Class IC Flammable Liquid: Fl.P. at or above 73°F and below 100°F.
Hazard IdentificationClassification of the substance or mixture
Flammable liquids, Category 3
Eye irritation, Category 2
Acute toxicity - Category 4, Inhalation
Specific target organ toxicity â single exposure, Category 3
GHS label elements, including precautionary statements
Pictogram(s) 
Signal word Warning
Hazard statement(s) H226 Flammable liquid and vapour
H319 Causes serious eye irritation
H332 Harmful if inhaled
H335 May cause respiratory irritation
Precautionary statement(s) Prevention P210 Keep away from heat, hot surfaces, sparks, open flames and other ignition sources. No smoking.
P233 Keep container tightly closed.
P240 Ground and bond container and receiving equipment.
P241 Use explosion-proof [electrical/ventilating/lighting/...] equipment.
P242 Use non-sparking tools.
P243 Take action to prevent static discharges.
P280 Wear protective gloves/protective clothing/eye protection/face protection/hearing protection/...
P264 Wash ... thoroughly after handling.
P261 Avoid breathing dust/fume/gas/mist/vapours/spray.
P271 Use only outdoors or in a well-ventilated area.
Response P303+P361+P353 IF ON SKIN (or hair): Take off immediately all contaminated clothing. Rinse affected areas with water [or shower].
P370+P378 In case of fire: Use ... to extinguish.
P305+P351+P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
P304+P340 IF INHALED: Remove person to fresh air and keep comfortable for breathing.
P317 Get medical help.
P319 Get medical help if you feel unwell.
Storage P403+P235 Store in a well-ventilated place. Keep cool.
P403+P233 Store in a well-ventilated place. Keep container tightly closed.
P405 Store locked up.
Disposal P501 Dispose of contents/container to an appropriate treatment and disposal facility in accordance with applicable laws and regulations, and product characteristics at time of disposal.
Other hazards which do not result in classification
no data available
Handling and StoragePrecautions for safe handling
NO open flames, NO sparks and NO smoking. Above 37°C use a closed system, ventilation and explosion-proof electrical equipment. Handling in a well ventilated place. Wear suitable protective clothing. Avoid contact with skin and eyes. Avoid formation of dust and aerosols. Use non-sparking tools. Prevent fire caused by electrostatic discharge steam.
Conditions for safe storage, including any incompatibilities
Fireproof. Separated from acids and oxidants. Cool. Dry. Keep in a well-ventilated room.
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Seller Information
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Business Type:
Trader
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Main Products:
Organic Intermediate
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Location:
Room 1001, No. 3 Building, Jiaye International City, Jinrong 3 Street
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Payment Terms:
D/P,L/C,D/A,TT against B/L draft before shipment
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Average lead Time:
14
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Total Annual Revenue:
$50 million-$100 million
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Total Employees:
11-50
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Year of Establishment:
2003
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Inquiry History26 Inquiries
Country Product Purchase Quantity Date Posted 
Turkey
Tetraethyl orthosilicate
1 MT Dec 14, 2023 
India
Tetraethyl orthosilicate
1.00 MT Dec 28, 2023 
Brazil
Tetraethyl orthosilicate
2000 KG Nov 14, 2024
India
Ethyl silicate
700.00 KG Apr 12, 2024
India
Ethyl silicate
700 KG Apr 11, 2024 
Israel
Tetraethyl Orthosilicate
1 20' Fcl May 30, 2024
India
tetraethyl orthosilicate
25.00 KG Jun 12, 2026 
United States
TEOS 78-10-4-honour
1000 KG Mar 30, 2025
United States
Tetraethyl Orthosilicate
20 MT Mar 8, 2025
Turkey
tetraethyl silicate ethyl silicate
1 KG Jul 1, 2024
United States
Tetraethyl orthosilicate
1 KG Feb 28, 2024 
France
Tetraethyl orthosilicate
200 KG Jan 10, 2024
United States
Tetraethyl orthosilicate
1 TON Dec 19, 2023 
United Kingdom
Tetraethyl orthosilicate
1 KG Nov 21, 2024 
Malaysia
Ethyl silicate 40
200 KG Oct 8, 2024 
Pakistan
Tetraethyl Orthosilicate
500 Jul 26, 2024
Turkey
Tetraethyl orthosilicate
5 KG Jan 12, 2024
India
Ethyl Silicate- 40 %
50.00 KG Dec 29, 2023
United States
Tetraethyl Orthosilicate TEOS
2450 MT Sep 10, 2025
United States
Tetraethyl Orthosilicate TEOS
245 MT Apr 8, 2025 Post an enquiry for this product
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