|
|||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Ethyl silicate | CAS 78-10-4 | ||
| (C2H5)4SiO4 | RTECS VV9450000 | ||
|
Synonyms & Trade Names Ethyl orthosilicate, Ethyl silicate (condensed), Tetraethoxysilane, Tetraethyl orthosilicate, Tetraethyl silicate |
DOT ID & Guide 1292 132 |
||
|
Exposure Limits |
NIOSH REL: TWA 10 ppm (85 mg/m3) | ||
| OSHA PEL�: TWA 100 ppm (850 mg/m3) | |||
| IDLH 700 ppm | Conversion 1 ppm = 8.52 mg/m3 | ||
|
Physical Description Colorless liquid with a sharp, alcohol-like odor. |
|||
|
MW: 208.3 |
BP: 336°F |
FRZ: -117°F |
Sol: Reacts |
|
VP: 1 mmHg |
IP: 9.77 eV |
|
Sp.Gr: 0.93 |
|
Fl.P: 99°F |
UEL: ? |
LEL: ? |
|
| Class IC Flammable Liquid: Fl.P. at or above 73�F and below 100�F. | |||
|
Incompatibilities & Reactivities Strong oxidizers, water [Note: Reacts with water to form a silicone adhesive (a milky-white mass).] |
|||
|
Measurement Methods NIOSH S264 (II-3) |
|
Personal Protection & Sanitation 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 |
|
| Exposure Routes inhalation, ingestion skin, and/or eye contact | |
| Symptoms Irritation eyes, nose; in animals: lacrimation (discharge of tears); dyspnea (breathing difficulty), pulmonary edema; tremor, narcosis; liver, kidney damage; anemia | |
|
Target Organs
Eyes, respiratory system, liver, kidneys, blood, skin |
|
| See also: INTRODUCTION |