Ethyl silicate
Synonyms & Trade Names
Ethyl orthosilicate, Ethyl silicate (condensed), Tetraethoxysilane, Tetraethyl orthosilicate, Tetraethyl silicatePhysical Description
Colorless liquid with a sharp, alcohol-like odor.Molecular Weight
208.3Boiling Point
336°FFreezing Point
-117°FSolubility
ReactsVapor Pressure
1 mmHgIonization Potential
9.77 eVSpecific Gravity
0.93Flash Point
99°FUpper Exposive Limit
?Lower Explosive Limit
?Incompatibilities & Reactivities
Strong oxidizers, water [Note: Reacts with water to form a silicone adhesive (a milky-white mass).]Exposure Routes
inhalation, ingestion, skin and/or eye contactSymptoms
irritation eyes, nose; In Animals: lacrimation (discharge of tears); dyspnea (breathing difficulty), pulmonary edema; tremor, narcosis; liver, kidney damage; anemiaTarget Organs
Eyes, respiratory system, liver, kidneys, blood, skinPersonal Protection/Sanitation
(See protection codes)Skin:Prevent skin contact
Eyes:Prevent eye contact
Wash skin:When contaminated
Remove:When wet (flammable)
Change:No recommendation
First Aid
(See procedures)Eye:Irrigate immediately
Skin:Soap wash promptly
Breathing:Respiratory support
Swallow:Medical attention immediately
Respirator Recommendations
NIOSH
Up to 100 ppm:
(APF = 10) Any supplied-air respirator*
Up to 250 ppm:
(APF = 25) Any supplied-air respirator operated in a continuous-flow mode*
Up to 500 ppm:
(APF = 50) Any self-contained breathing apparatus with a full facepiece
(APF = 50) Any supplied-air respirator with a full facepiece
Up to 700 ppm:
(APF = 2000) Any supplied-air respirator that has a full facepiece and is operated in a pressure-demand or other positive-pressure mode
Emergency or planned entry into unknown concentrations or IDLH conditions:
(APF = 10,000) Any self-contained breathing apparatus that has a full facepiece and is operated in a pressure-demand or other positive-pressure mode
(APF = 10,000) Any supplied-air respirator that has a full facepiece and is operated in a pressure-demand or other positive-pressure mode in combination with an auxiliary self-contained positive-pressure breathing apparatus
Escape:
(APF = 50) Any air-purifying, full-facepiece respirator (gas mask) with a chin-style, front- or back-mounted organic vapor canister
Any appropriate escape-type, self-contained breathing apparatus
- Page last reviewed:April 11, 2016
- Page last updated:April 11, 2016
- Content source:
- National Institute for Occupational Safety and Health (NIOSH) Education and Information Division