에틸실리케이트 구조식 이미지
카스 번호:
에틸실리케이트;규산에틸;에틸실리케이트;에틸 실리케이트
Tetraethyl orthosilicate
포뮬러 무게:
MOL 파일:

에틸실리케이트 속성

-77 °C
끓는 점
168 °C(lit.)
0.933 g/mL at 20 °C(lit.)
증기 밀도
7.2 (vs air)
<1 mm Hg ( 20 °C)
n20/D 1.382(lit.)
116 °F
저장 조건
Store below +30°C.
Soluble in ethanol and 2-propanol.
물리적 상태
Specific Gravity
Moisture Sensitive
Hydrolytic Sensitivity
7: reacts slowly with moisture/water
노출 한도
ACGIH: TWA 10 ppm
OSHA: TWA 100 ppm(850 mg/m3)
NIOSH: IDLH 700 ppm; TWA 10 ppm(85 mg/m3)
Stable. Flammable. Incompatible with strong oxidizing agents, water, alkalies, mineral acids.
CAS 데이터베이스
78-10-4(CAS DataBase Reference)
Silicic acid (H4sio4), tetraethyl ester(78-10-4)
Tetraethyl silicate (78-10-4)
  • 위험 및 안전 성명
  • 위험 및 사전주의 사항 (GHS)
위험품 표기 Xn
위험 카페고리 넘버 10-20-36/37-36/37/38
안전지침서 16-36/37/39-26-24/25
유엔번호(UN No.) UN 1292 3/PG 3
WGK 독일 1
RTECS 번호 VV9450000
자연 발화 온도 230 °C
HS 번호 2920 90 70
위험 등급 3
포장분류 III
유해 물질 데이터 78-10-4(Hazardous Substances Data)
독성 LD50 orally in Rabbit: 6270 mg/kg LD50 dermal Rabbit 5860 mg/kg
IDLA 700 ppm
기존화학 물질 KE-33411
그림문자(GHS): GHS hazard pictogramsGHS hazard pictograms
신호 어: Warning
유해·위험 문구:
암호 유해·위험 문구 위험 등급 범주 신호 어 그림 문자 P- 코드
H226 인화성 액체 및 증기 인화성 액체 구분 3 경고
H319 눈에 심한 자극을 일으킴 심한 눈 손상 또는 자극성 물질 구분 2A 경고 GHS hazard pictograms P264, P280, P305+P351+P338,P337+P313P
H332 흡입하면 유해함 급성 독성 물질 흡입 구분 4 경고 GHS hazard pictograms P261, P271, P304+P340, P312
H335 호흡 자극성을 일으킬 수 있음 특정 표적장기 독성 - 1회 노출;호흡기계 자극 구분 3 경고 GHS hazard pictograms
P210 열·스파크·화염·고열로부터 멀리하시오 - 금연 하시오.
P233 용기를 단단히 밀폐하시오. 용기는 환기가 잘 되는 곳에 단단히 밀폐하여 보관하시오.
P240 용기와 수용설비를 접지 및 접합시키시오.
P241 폭발 방지용 장비[전기적/환기/조명/...]을(를) 사용하시오.
P305+P351+P338 눈에 묻으면 몇 분간 물로 조심해서 씻으시오. 가능하면 콘택트렌즈를 제거하시오. 계속 씻으시오.
NFPA 704
2 1

에틸실리케이트 C화학적 특성, 용도, 생산

화학적 성질

Ethyl silicate is a flammable, colourless liquid with a mild, sweet, alcohol-like odour. Exposure to ethyl silicate can occur through inhalation, ingestion, and eye or skin contact. It is practically insoluble in water, soluble in alcohol, and slightly soluble in benzene.


Tetraethyl Orthosilicate is used in the preparation of antidreflective coatings on silicate glass via silicon dioxide. Crosslinking reagent.

생산 방법

Prepared from absolute alcohol and silicon tetrachloride.

일반 설명

A clear colorless liquid with a faint odor. Flash point 125°F. Less dense than water. Vapors are heavier than air.

공기와 물의 반응

Flammable. Practically insoluble in water. Reacts slowly with water to form silica and ethyl alcohol [Merck].

반응 프로필

Tetraethyl orthosilicate reacts exothermically with acids Strong oxidizing acids may cause a reaction that is sufficiently exothermic to ignite the reaction products. May generate with caustic solutions. May generate flammable hydrogen with alkali metals and hydrides.


Moderate fire risk. Strong irritant to eyes, nose, throat.


Exposures to ethyl silicate cause adverse health effects. The symptoms of poisoning include, but are not limited to, irritation of the eye, mucous membrane, respiratory tract, respiratory difficulty, tremor, fatigue, narcosis, nausea, and vomiting. Prolonged periods of skin contact may produce drying, cracking, inflammation, and dermatitis. As observed in laboratory animals, occupational workers exposed to the chemical substance may suffer from liver and kidney damage, CNS depression, and anemia. At concentrations of 3000 ppm, ethyl silicate causes extreme and intolerable irritation of the eyes and mucous membranes; at 1200 ppm, it produces tearing of the eyes; at 700 ppm, it causes mild stinging of the eyes and nose; and at 250 ppm, it produces slight irritation of the eyes and nose.


HIGHLY FLAMMABLE: Will be easily ignited by heat, sparks or flames. Vapors may form explosive mixtures with air. Vapors may travel to source of ignition and flash back. Most vapors are heavier than air. They will spread along ground and collect in low or confined areas (sewers, basements, tanks). Vapor explosion hazard indoors, outdoors or in sewers. Runoff to sewer may create fire or explosion hazard. Containers may explode when heated. Many liquids are lighter than water.

Safety Profile

Poison by intravenous route. Moderately toxic by other routes. A skin,mucous membrane, and severe eye irritant. Narcotic in high concentrations. Flammable liquid when exposed to heat or flame; can react vigorously with oxidzing materials. When heated to decomposition it emits acrid smoke and fumes. See also ESTERS.

잠재적 노출

Ethyl silicate is used as a binder in production of cases and molds for investment casting of metals. The next largest application is in corrosion-resistant coatings; primarily as a binder for zinc dust paints. Miscellaneous uses include the protection of white-light bulbs; the preparation of soluble silicas; catalyst preparation and regeneration; and as a crosslinker and intermediate in the production of silicones

운송 방법

UN1292 Tetraethyl acetate, Hazard Class: 3; Labels: 3-Flammable liquid.

Purification Methods

Fractionate it through an 80cm Podbielniak type column (p 11) with a heated jacket and partial take-off head. It is slowly decomposed by H2O-and is soluble in EtOH. It is flammable-it irritates the eyes and mucous membranes. [Sumrell & Ham J Am Chem Soc 78 5573 1956, Bradley et al. J Chem Soc 5020 1952, Beilstein 1 IV 1360.]

비 호환성

May form explosive mixture with air. Strong oxidizers; strong acids; water.

폐기물 처리

Incineration in admixture with a more flammable solvent.

주의 사항

Occupational workers should avoid contact between ethyl silicate and strong oxidizers, water, mineral acids, and alkalis. Workers should use appropriate personal protective clothing and equipment that must be carefully selected, used, and maintained to be effective in preventing skin contact with ethyl silicate. The selection of the appropriate personal protective equipment (PPE) (e.g., gloves, sleeves, encapsulating suits) should be based on the extent of the worker’s potential exposure to ethyl silicate. There are no published reports on the resistance of various materials to permeation by ethyl silicate.

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