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Methyl silicate

Synonyms & Trade Names
Methyl orthosilicate, Tetramethoxysilane, Tetramethyl ester of silicic acid, Tetramethyl silicate
CAS No.
681-84-5
RTECS No.
VV9800000
DOT ID & Guide
2606 155
Formula
(CH3O)4Si
Conversion
1 ppm = 6.23 mg/m3
IDLH
N.D.
See: IDLH INDEX
Exposure Limits
NIOSH REL
: TWA 1 ppm (6 mg/m3)
OSHA PEL
†: none
Measurement Methods

None available
See: NMAM or OSHA Methods
Physical Description
Clear, colorless liquid. [Note: A solid below 28°F.]
MW:
152.3
BP:
250°F
FRZ:
28°F
Sol:
Soluble		 VP(77°F): 12 mmHg
IP:
?
Sp.Gr:
1.02
Fl.P:
205°F
UEL:
?
LEL:
?
Class IIIB Combustible Liquid: Fl.P. at or above 200°F.
Incompatibilities & Reactivities
Oxidizers; hexafluorides of rhenium, molybdenum & tungsten
Exposure Routes
inhalation, ingestion, skin and/or eye contact
Symptoms
irritation eyes, corneal damage (following even short-term exposure to the vapor); lung, kidney injury; pulmonary edema
Target Organs
Eyes, respiratory system, kidneys
Personal Protection/Sanitation
(See protection codes)
Skin: Prevent skin contact
Eyes: Prevent eye contact
Wash skin: Daily
Remove: When wet or contaminated
Change: No recommendation
Provide: Eyewash
First Aid
(See procedures)
Eye: Irrigate immediately
Skin: Soap wash
Breathing: Respiratory support
Swallow: Medical attention immediately
Respirator Recommendations

Not available.

Important additional information about respirator selection

See also: INTRODUCTION   See ICSC CARD: 1188
 

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