CAS 78-10-4|Tetraethyl orthosilicate

Introduction：Basic information about CAS 78-10-4|Tetraethyl orthosilicate, including its chemical name, molecular formula, synonyms, physicochemical properties, and safety information, etc.

Table of Contents

1. Names
2. Chemical & Physical Properties
3. Toxicological Information
CHEMICAL IDENTIFICATION
HEALTH HAZARD DATA
ACUTE TOXICITY DATA
4. Safety Information
5. Customs
6. Articles141
7. Synonyms

Common Name	Tetraethyl orthosilicate
CAS Number	78-10-4	Molecular Weight	208.327
Density	0.9±0.1 g/cm3	Boiling Point	165.5±0.0 °C at 760 mmHg
Molecular Formula	C₈H₂₀O₄Si	Melting Point	-77 °C
MSDS	ChineseUSA	Flash Point	46.7±0.0 °C
Symbol	GHS02, GHS07	Signal Word	Warning

Names

Name	Tetraethyl orthosilicate
Synonym	More Synonyms

Chemical & Physical Properties

Density	0.9±0.1 g/cm3
Boiling Point	165.5±0.0 °C at 760 mmHg
Melting Point	-77 °C
Molecular Formula	C₈H₂₀O₄Si
Molecular Weight	208.327
Flash Point	46.7±0.0 °C
Exact Mass	208.113083
PSA	36.92000
LogP	5.10
Vapour density	7.2 (vs air)
Vapour Pressure	2.5±0.3 mmHg at 25°C
Index of Refraction	1.409
InChIKey	BOTDANWDWHJENH-UHFFFAOYSA-N
SMILES	CCO[Si](OCC)(OCC)OCC
Stability	Stable. Flammable. Incompatible with strong oxidizing agents, water, alkalies, mineral acids.
Water Solubility	Hydrolysis
Freezing Point	-77℃

Toxicological Information

CHEMICAL IDENTIFICATION

RTECS NUMBER :: VV9450000

CHEMICAL NAME :: Silicic acid, tetraethyl ester

CAS REGISTRY NUMBER :: 78-10-4

BEILSTEIN REFERENCE NO. :: 1422225

LAST UPDATED :: 199712

DATA ITEMS CITED :: 39

MOLECULAR FORMULA :: C8-H20-O4-Si

MOLECULAR WEIGHT :: 208.37

WISWESSER LINE NOTATION :: 2O-SI-O2&O2&O2

HEALTH HAZARD DATA

ACUTE TOXICITY DATA

TYPE OF TEST :: Standard Draize test

ROUTE OF EXPOSURE :: Administration into the eye

SPECIES OBSERVED :: Human

REFERENCE :: JIHTAB Journal of Industrial Hygiene and Toxicology. (Cambridge, MA) V.18-31, 1936-49. For publisher information, see AEHLAU. Volume(issue)/page/year: 22,288,1940

TYPE OF TEST :: Standard Draize test

ROUTE OF EXPOSURE :: Administration onto the skin

SPECIES OBSERVED :: Rodent - rabbit

REFERENCE :: UCDS** Union Carbide Data Sheet. (Union Carbide Corp., 39 Old Ridgebury Rd., Danbury, CT 06817) Volume(issue)/page/year: 7/23/1970

TYPE OF TEST :: Standard Draize test

ROUTE OF EXPOSURE :: Administration into the eye

SPECIES OBSERVED :: Rodent - rabbit

REFERENCE :: UCDS** Union Carbide Data Sheet. (Union Carbide Corp., 39 Old Ridgebury Rd., Danbury, CT 06817) Volume(issue)/page/year: 7/23/1970

TYPE OF TEST :: Standard Draize test

ROUTE OF EXPOSURE :: Administration into the eye

SPECIES OBSERVED :: Rodent - rabbit

REFERENCE :: 85JCAE "Prehled Prumyslove Toxikologie; Organicke Latky," Marhold, J., Prague, Czechoslovakia, Avicenum, 1986 Volume(issue)/page/year: -,1231,1986

TYPE OF TEST :: Standard Draize test

ROUTE OF EXPOSURE :: Administration into the eye

SPECIES OBSERVED :: Rodent - guinea pig

REFERENCE :: JIHTAB Journal of Industrial Hygiene and Toxicology. (Cambridge, MA) V.18-31, 1936-49. For publisher information, see AEHLAU. Volume(issue)/page/year: 22,288,1940 ** ACUTE TOXICITY DATA **

TYPE OF TEST :: LD50 - Lethal dose, 50 percent kill

ROUTE OF EXPOSURE :: Oral

SPECIES OBSERVED :: Rodent - rat

DOSE/DURATION :: 6270 mg/kg

TOXIC EFFECTS :: Details of toxic effects not reported other than lethal dose value

REFERENCE :: JIHTAB Journal of Industrial Hygiene and Toxicology. (Cambridge, MA) V.18-31, 1936-49. For publisher information, see AEHLAU. Volume(issue)/page/year: 31,60,1949

TYPE OF TEST :: LCLo - Lowest published lethal concentration

ROUTE OF EXPOSURE :: Inhalation

SPECIES OBSERVED :: Rodent - rat

DOSE/DURATION :: 1000 ppm/4H

TOXIC EFFECTS :: Details of toxic effects not reported other than lethal dose value

REFERENCE :: JIHTAB Journal of Industrial Hygiene and Toxicology. (Cambridge, MA) V.18-31, 1936-49. For publisher information, see AEHLAU. Volume(issue)/page/year: 31,343,1949

TYPE OF TEST :: LCLo - Lowest published lethal concentration

ROUTE OF EXPOSURE :: Inhalation

SPECIES OBSERVED :: Rodent - mouse

DOSE/DURATION :: 1 gm/m3/2H

TOXIC EFFECTS :: Behavioral - general anesthetic Lungs, Thorax, or Respiration - structural or functional change in trachea or bronchi Kidney, Ureter, Bladder - changes in tubules (including acute renal failure, acute tubular necrosis)

REFERENCE :: TPKVAL Toksikologiya Novykh Promyshlennykh Khimicheskikh Veshchestv. Toxicology of New Industrial Chemical Substances. For English translation, see TNICS*. (Izdatel'stvo Meditsina, Moscow, USSR) No.1- 1961- Volume(issue)/page/year: 5,192,1963

TYPE OF TEST :: LD50 - Lethal dose, 50 percent kill

ROUTE OF EXPOSURE :: Administration onto the skin

SPECIES OBSERVED :: Rodent - rabbit

DOSE/DURATION :: 6300 uL/kg

TOXIC EFFECTS :: Details of toxic effects not reported other than lethal dose value

REFERENCE :: UCDS** Union Carbide Data Sheet. (Union Carbide Corp., 39 Old Ridgebury Rd., Danbury, CT 06817) Volume(issue)/page/year: 7/23/1970

TYPE OF TEST :: LDLo - Lowest published lethal dose

ROUTE OF EXPOSURE :: Intravenous

SPECIES OBSERVED :: Rodent - rabbit

DOSE/DURATION :: 400 mg/kg

TOXIC EFFECTS :: Lungs, Thorax, or Respiration - pleural effusion Kidney, Ureter, Bladder - interstitial nephritis Blood - other hemolysis with or without anemia

REFERENCE :: INMEAF Industrial Medicine. (Chicago, IL) V.1-18, 1932-49. For publisher information, see IOHSA5. Volume(issue)/page/year: 6,660,1937

TYPE OF TEST :: LCLo - Lowest published lethal concentration

ROUTE OF EXPOSURE :: Inhalation

SPECIES OBSERVED :: Rodent - guinea pig

DOSE/DURATION :: 700 ppm/6H

TOXIC EFFECTS :: Behavioral - general anesthetic Lungs, Thorax, or Respiration - acute pulmonary edema Kidney, Ureter, Bladder - interstitial nephritis

REFERENCE :: JIHTAB Journal of Industrial Hygiene and Toxicology. (Cambridge, MA) V.18-31, 1936-49. For publisher information, see AEHLAU. Volume(issue)/page/year: 22,288,1940

TYPE OF TEST :: LCLo - Lowest published lethal concentration

ROUTE OF EXPOSURE :: Inhalation

SPECIES OBSERVED :: Mammal - species unspecified

DOSE/DURATION :: 4500 mg/m3

TOXIC EFFECTS :: Lungs, Thorax, or Respiration - acute pulmonary edema Liver - fatty liver degeneration Blood - other changes

REFERENCE :: TPKVAL Toksikologiya Novykh Promyshlennykh Khimicheskikh Veshchestv. Toxicology of New Industrial Chemical Substances. For English translation, see TNICS*. (Izdatel'stvo Meditsina, Moscow, USSR) No.1- 1961- Volume(issue)/page/year: 3,81,1961 ** OTHER MULTIPLE DOSE TOXICITY DATA **

TYPE OF TEST :: TCLo - Lowest published toxic concentration

ROUTE OF EXPOSURE :: Inhalation

SPECIES OBSERVED :: Rodent - rat

DOSE/DURATION :: 1000 ppm/7H/3D-I

TOXIC EFFECTS :: Kidney, Ureter, Bladder - changes in tubules (including acute renal failure, acute tubular necrosis) Kidney, Ureter, Bladder - hematuria Related to Chronic Data - death

REFERENCE :: JIHTAB Journal of Industrial Hygiene and Toxicology. (Cambridge, MA) V.18-31, 1936-49. For publisher information, see AEHLAU. Volume(issue)/page/year: 30,332,1948

TYPE OF TEST :: TCLo - Lowest published toxic concentration

ROUTE OF EXPOSURE :: Inhalation

SPECIES OBSERVED :: Rodent - mouse

DOSE/DURATION :: 200 ppm/6H/4W-I

REFERENCE :: ARTODN Archives of Toxicology. (Springer-Verlag, Heidelberger Pl. 3, D-1000 Berlin 33, Fed. Rep. Ger.) V.32- 1974- Volume(issue)/page/year: 68,277,1994 *** REVIEWS *** ACGIH TLV-TWA 85 mg/m3 (10 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:TWA 100 ppm (850 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: 3,108,1971 OSHA PEL (Gen Indu):8H TWA 100 ppm (850 mg/m3) CFRGBR Code of Federal Regulations. (U.S. Government Printing Office, Supt. of Documents, Washington, DC 20402) Volume(issue)/page/year: 29,1910.1000,1994 OSHA PEL (Construc):8H TWA 100 ppm (850 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 100 ppm (850 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 OSHA PEL (Fed Cont):8H TWA 100 ppm (850 mg/m3) CFRGBR Code of Federal Regulations. (U.S. Government Printing Office, Supt. of Documents, Washington, DC 20402) Volume(issue)/page/year: 41,50-204.50,1994 *** OCCUPATIONAL EXPOSURE LIMITS *** OEL-AUSTRALIA:TWA 10 ppm (85 mg/m3) JAN 1993 OEL-BELGIUM:TWA 10 ppm (85 mg/m3) JAN 1993 OEL-DENMARK:TWA 10 ppm (85 mg/m3) JAN 1993 OEL-FINLAND:TWA 10 ppm (85 mg/m3);STEL 20 ppm (170 mg/m3) JAN 1993 OEL-FRANCE:TWA 10 ppm (85 mg/m3) JAN 1993 OEL-GERMANY:TWA 100 ppm (850 mg/m3) JAN 1993 OEL-THE NETHERLANDS:TWA 10 ppm (85 mg/m3) JAN 1993 OEL-THE PHILIPPINES:TWA 100 ppm (850 mg/m3) JAN 1993 OEL-POLAND:TWA 80 mg/m3 JAN 1993 OEL-RUSSIA:STEL 20 mg/m3 JAN 1993 OEL-SWITZERLAND:TWA 10 ppm (85 mg/m3) JAN 1993 OEL-TURKEY:TWA 100 ppm (850 mg/m3) JAN 1993 OEL-UNITED KINGDOM:TWA 10 ppm (85 mg/m3);STEL 30 ppm (255 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 ETHYL SILICATE-air:10H TWA 10 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 NIOSH OCCUPATIONAL EXPOSURE SURVEY DATA : NOES - National Occupational Exposure Survey (1983) NOES Hazard Code - X4097 No. of Facilities: 721 (estimated) No. of Industries: 22 No. of Occupations: 26 No. of Employees: 10422 (estimated) No. of Female Employees: 2566 (estimated)

Safety Information

Symbol	GHS02, GHS07
Signal Word	Warning
Hazard Statements	H226-H319-H332-H335
Precautionary Statements	P210-P261-P280-P304 + P340 + P312-P337 + P313-P403 + P235
Personal Protective Equipment	Eyeshields;Faceshields;full-face respirator (US);Gloves;multi-purpose combination respirator cartridge (US);type ABEK (EN14387) respirator filter
Hazard Codes	Xn:Harmful;
Risk Phrases	R10;R20;R36/37
Safety Phrases	S16-S36/37/39
RIDADR	UN 1292 3/PG 3
WGK Germany	1
RTECS	VV9450000
Packaging Group	III
Hazard Class	3
HS Code	2920909090

Customs

HS Code	2920909090
Summary	2920909090 esters of other inorganic acids of non-metals (excluding esters of hydrogen halides) and their salts; their halogenated, sulphonated, nitrated or nitrosated derivatives。Supervision conditions:None。VAT:17.0%。Tax rebate rate:9.0%。MFN tariff:6.5%。General tariff:30.0%

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Synonyms

tetraethylorthosilicate

tetraethoxysilane

Tetraethyl silicate

tetraethyl ortosilicate

MFCD00009062

Silicon tetraethoxide

tetraethyloxysilane

tetra-ethyl orthosilicate

Orthosilicic acid tetraethyl ester

EINECS 201-083-8

ethyl orthosilicate

Silicic acid (HSiO), tetraethyl ester

TEOS

Orthosilicic acid, tetraethyl ester

Tetraethyl-O-silicate

Dynasil A

silicic acid tetraethyl ester

silikanl

Silester

tetraethoxysilicon(iv)

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