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MSDS  : Silicic acid, tetramethyl ester
CAS  : 681-84-5
SYNONYMS  : * Methyl silicate * Silicic acid, methyl ester of ortho- * Tetramethoxysilane * Tetramethyl silicate * Tetramethylsilikat * TL 190
*** CHEMICAL IDENTIFICATION ***

RTECS NUMBER : VV9800000
CHEMICAL NAME : Silicic acid, tetramethyl ester
CAS REGISTRY NUMBER : 681-84-5
LAST UPDATED : 199806
DATA ITEMS CITED : 25
MOLECULAR FORMULA : C4-H12-O4-Si
MOLECULAR WEIGHT : 152.25
WISWESSER LINE NOTATION : 1O-SI-O1&O1&O1
SYNONYMS/TRADE NAMES :
* Methyl silicate
* Silicic acid, methyl ester of ortho-
* Tetramethoxysilane
* Tetramethyl silicate
* Tetramethylsilikat
* TL 190

*** HEALTH HAZARD DATA ***

** ACUTE TOXICITY DATA **

TYPE OF TEST : LDLo - Lowest published lethal dose
ROUTE OF EXPOSURE : Oral
SPECIES OBSERVED : Rodent - rat
DOSE/DURATION : 700 mg/kg
TOXIC EFFECTS :
Kidney, Ureter, Bladder - changes in tubules (including acute renal failure,
acute tubular necrosis)
REFERENCE :
30ZNA5 "Dangerous Properties of Industrial Materials," Sax, N.I., New York,
Van Nostrand Reinhold, 1980 Volume(issue)/page/year: 3,935,1968

TYPE OF TEST : LCLo - Lowest published lethal concentration
ROUTE OF EXPOSURE : Inhalation
SPECIES OBSERVED : Rodent - rat
DOSE/DURATION : 250 ppm/4H
TOXIC EFFECTS :
Details of toxic effects not reported other than lethal dose value
REFERENCE :
AMIHBC AMA Archives of Industrial Hygiene and Occupational Medicine.
(Chicago, IL) V.2-10, 1950-54. For publisher information, see AEHLAU.
Volume(issue)/page/year: 4,119,1951

TYPE OF TEST : LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE : Intraperitoneal
SPECIES OBSERVED : Rodent - rat
DOSE/DURATION : 100 mg/kg
TOXIC EFFECTS :
Details of toxic effects not reported other than lethal dose value
REFERENCE :
85JCAE "Prehled Prumyslove Toxikologie; Organicke Latky," Marhold, J.,
Prague, Czechoslovakia, Avicenum, 1986 Volume(issue)/page/year: -,1222,1986

TYPE OF TEST : LCLo - Lowest published lethal concentration
ROUTE OF EXPOSURE : Inhalation
SPECIES OBSERVED : Rodent - mouse
DOSE/DURATION : 1 gm/m3/10M
TOXIC EFFECTS :
Sense Organs and Special Senses (Eye) - effect, not otherwise specified
Musculoskeletal - other changes
REFERENCE :
NDRC** National Defense Research Committee, Office of Scientific Research
and Development, Progress Report. Volume(issue)/page/year:
NDCrc-132,MAY1942

TYPE OF TEST : LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE : Intraperitoneal
SPECIES OBSERVED : Rodent - mouse
DOSE/DURATION : 250 mg/kg
TOXIC EFFECTS :
Details of toxic effects not reported other than lethal dose value
REFERENCE :
CBCCT* "Summary Tables of Biological Tests," National Research Council
Chemical-Biological Coordination Center. (National Academy of Science
Library, 2101 Constitution Ave., NW, Washington, DC 20418)
Volume(issue)/page/year: 2,56,1950

TYPE OF TEST : LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE : Administration onto the skin
SPECIES OBSERVED : Rodent - rabbit
DOSE/DURATION : 17 mL/kg
TOXIC EFFECTS :
Details of toxic effects not reported other than lethal dose value
REFERENCE :
AMIHBC AMA Archives of Industrial Hygiene and Occupational Medicine.
(Chicago, IL) V.2-10, 1950-54. For publisher information, see AEHLAU.
Volume(issue)/page/year: 4,119,1951

TYPE OF TEST : LDLo - Lowest published lethal dose
ROUTE OF EXPOSURE : Intravenous
SPECIES OBSERVED : Rodent - rabbit
DOSE/DURATION : 100 mg/kg
TOXIC EFFECTS :
Lungs, Thorax, or Respiration - acute pulmonary edema
Kidney, Ureter, Bladder - changes in tubules (including acute renal failure,
acute tubular necrosis)
REFERENCE :
30ZNA5 "Dangerous Properties of Industrial Materials," Sax, N.I., New York,
Van Nostrand Reinhold, 1980 Volume(issue)/page/year: 3,935,1968

TYPE OF TEST : LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE : Oral
SPECIES OBSERVED : Mammal - species unspecified
DOSE/DURATION : 1 gm/kg
TOXIC EFFECTS :
Details of toxic effects not reported other than lethal dose value
REFERENCE :
GISAAA Gigiena i Sanitariya. For English translation, see HYSAAV. (V/O
Mezhdunarodnaya Kniga, 113095 Moscow, USSR) V.1- 1936-
Volume(issue)/page/year: 39(4),86,1974

*** REVIEWS ***

ACGIH TLV-TWA 6 mg/m3 (1 ppm)
DTLVS* The Threshold Limit Values (TLVs) and Biological Exposure Indices
(BEIs) booklet issues by American Conference of Governmental Industrial
Hygienists (ACGIH), Cincinnati, OH, 1996 Volume(issue)/page/year:
TLV/BEI,1997

*** U.S. STANDARDS AND REGULATIONS ***

MSHA STANDARD:air-CL 5 ppm (30 mg/m3)
DTLVS* The Threshold Limit Values (TLVs) and Biological Exposure Indices
(BEIs) booklet issues by American Conference of Governmental Industrial
Hygienists (ACGIH), Cincinnati, OH, 1996 Volume(issue)/page/year:
3,169,1971

OSHA PEL (Construc):8H TWA 5 ppm (30 mg/m3)
CFRGBR Code of Federal Regulations. (U.S. Government Printing Office, Supt.
of Documents, Washington, DC 20402) Volume(issue)/page/year:
29,1926.55,1994

OSHA PEL (Shipyard):8H TWA 5 ppm (30 mg/m3)
CFRGBR Code of Federal Regulations. (U.S. Government Printing Office, Supt.
of Documents, Washington, DC 20402) Volume(issue)/page/year:
29,1915.1000,1993

*** OCCUPATIONAL EXPOSURE LIMITS ***

OEL-AUSTRALIA:TWA 1 ppm (6 mg/m3) JAN 1993

OEL-BELGIUM:TWA 1 ppm (6 mg/m3) JAN 1993

OEL-DENMARK:STEL 1 ppm (6 mg/m3) JAN 1993

OEL-FINLAND:TWA 5 ppm (30 mg/m3);STEL 10 ppm (60 mg/m3) JAN 1993

OEL-FRANCE:TWA 1 ppm (6 mg/m3) JAN 1993

OEL-THE NETHERLANDS:TWA 1 ppm (6 mg/m3) JAN 1993

OEL-SWITZERLAND:TWA 1 ppm (6 mg/m3) JAN 1993

OEL-UNITED KINGDOM:TWA 1 ppm (6 mg/m3);STEL 5 ppm (30 mg/m3) JAN 1993

OEL IN BULGARIA, COLOMBIA, JORDAN, KOREA check ACGIH TLV

OEL IN NEW ZEALAND, SINGAPORE, VIETNAM check ACGIH TLV

*** NIOSH STANDARDS DEVELOPMENT AND SURVEILLANCE DATA ***

NIOSH RECOMMENDED EXPOSURE LEVEL (REL) :
NIOSH REL TO METHYL SILICATE-air:10H TWA 1 ppm
REFERENCE :
NIOSH* National Institute for Occupational Safety and Health, U.S. Dept. of
Health, Education, and Welfare, Reports and Memoranda.
Volume(issue)/page/year: DHHS #92-100,1992

*** STATUS IN U.S. ***

EPA TSCA Section 8(b) CHEMICAL INVENTORY

EPA TSCA TEST SUBMISSION (TSCATS) DATA BASE, JUNE 1998


*** END OF RECORD ***
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NAMECAS
Silicate, soapstoneSUBSTANCE DEFINITION :Containing less than 1% crystalline silicaREFERENCE :FEREAC Federal Register. (U.S. Government Printing Office, Supt. ofDocuments, Washington, DC 20402) V.1- 1936- 65997-15-1
Silicic acid 7699-41-4
Silicic acid (ortho) 10193-36-9
Silicic acid (polyortho) 1343-98-2
Silicic acid, aluminum magnesium salt 1327-43-1
Silicic acid, beryllium salt 15191-85-2
Silicic acid, beryllium zinc salt 39413-47-3
SF-1508 56378-68-8
Silicic acid, calcium salt 1344-95-2
Silicic acid (H2SiO3), calcium salt (11) 10101-39-0
Silicic acid, 2-chloroethyl ester 10101-39-0
Silicic acid (H2SiO3), disodium salt 6834-92-0
Silicic acid, 2-ethylbutyl ester 68037-57-0
Silicic acid, methyl ester 12002-26-5
Silicic acid, tetra(2-ethylbutyl) ester 78-13-7
Silicic acid, tetraethyl ester 78-10-4
Silicic acid, tetra(2-fluoroethyl) ester 650-00-0
Silicic acid, tetrakis(2-chloroethyl) ester 18290-84-1
SF-1739 61991-01-3
Silicic acid (H2SiO4), tetrakis(1-methylpropyl) ester 5089-76-9
Silicic acid, tetramethyl ester 681-84-5
Silicon 7440-21-3
Silicon(1+),(1-(bis(2-hydroxyethyl)amino)-2-propanolato(3-)-N,O,O',O") (ethylmethylsulfonium eta-methylide)-, iodide,(TB-5-34)- 67349-10-4
Silicon carbide 409-21-2
Silicon chloride 10026-04-7
Silicon chrome 11133-78-1
Silicon(1+), (diethylsulfoniumeta-methylide)((1,1',1"-nitrilotris(2-propanolato))(3-)- N,O,O',O")-, bromide, (TB-5-23) 67366-36-3
Silicon(1+), ((1,1-dimethylethyl)methylsulfoniumeta-methylide)((2,2',2"-nitrilotris(ethanolato))(3-)-N,O,O',O")-, iodide, (TB-5-23)- 67349-11-5
Silicon dioxide, hydrate 67349-11-5
SF 3024-B20-KOSUBSTANCE DEFINITION :Phenol resin which is mixture of oligomersREFERENCE :GTPZAB Gigiena Truda i Professional'nye Zabolevaniya. Labor Hygiene andOccupational Diseases. (V/O Mezhdunarodnaya Kniga, 113095 Moscow, USSR)V.1-36, 1957-1992. For publisher information, see MTPEEIVolume(issue)/page/year: 28(7),53,1984 67349-11-5
Silicon,(3,3,4,4,5,5,6,6,7,7,8,8-dodecafluoro-1-iodooctyl)((2,2'2,''-nitrilotris(e thanolato))(3-)-N,O,O',O'')-,(TB-5-23)- 135798-16-2
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Silicon,(3,3,4,4,5,5,6,6,7,7,8,8,9,9,10,10-hexadecafluoro-1-iododecyl)((2,2',2''-n itrilotris(ethanolato))(3-)-N,O,O',O'')-, (TB-5-23)- 135798-17-3
Silicon,((2,2',2''-nitrilotris(ethanolato))(3-)-N,O,O',O'')(3,3,4,4,5,5,6,6,6-nona fluoro-1- iodohexyl)-,(TB-5-23)- 135798-15-1
Silicon,((2,2',2''-nitrilotris(ethanolato))(3-)-N,O,O',O'')(3,3,4,4,5,5,6,6-octafl uoro-1- iodohexyl)-, (TB-5-23)- 135798-14-0
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Silicon,((2,2',2''-nitrilotris(ethanolato))(3-)-N,O,O',O'')(3,3,3-trifluoro-1-iodo propyl)-, (TB-5-23)- 112341-57-8
Silicone 7158 112341-57-8
Silicone antifoam sag-47 112341-57-8
SF-1540 A 71329-58-3
Silicone antifoam sag-100 71329-58-3
Silicone C-25 71329-58-3
Silicone fluid L-43 71329-58-3
Silicone L-31 71329-58-3
Silicone L-42 (oil) 71329-58-3
Silicone L-45 63148-62-9
Silicone L-75 63148-53-8
Silicone L-76 63148-53-8
Silicone L-77 63148-53-8

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