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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
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
기존화학 물질 KE-33411
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
H315 피부에 자극을 일으킴 피부부식성 또는 자극성물질 구분 2 경고 P264, P280, P302+P352, P321,P332+P313, P362
H318 눈에 심한 손상을 일으킴 심한 눈 손상 또는 자극성 물질 구분 1 위험 P280, P305+P351+P338, P310
H319 눈에 심한 자극을 일으킴 심한 눈 손상 또는 자극성 물질 구분 2A 경고 P264, P280, P305+P351+P338,P337+P313P
H332 흡입하면 유해함 급성 독성 물질 흡입 구분 4 경고 P261, P271, P304+P340, P312
H335 호흡 자극성을 일으킬 수 있음 특정 표적장기 독성 - 1회 노출;호흡기계 자극 구분 3 경고
H370 장기(또는, 영향을 받은 알려진 모든 장기를 명시)에 손상을 일으킴(노출되어도 특정 표적장기 독성을 일으키지 않는다는 결정적인 노출경로가 있다면 노출경로를 기재) 특정 표적장기 독성 - 1회 노출 구분 1 위험 P260, P264, P270, P307+P311, P321,P405, P501
H373 장기간 또는 반복 노출되면 장기(또는, 영향을 받은 알려진 모든 장기를 명시)에 손상을 일으킬 수 있음 특정 표적장기 독성 - 반복 노출 구분 2 경고 P260, P314, P501
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.
P260 분진·흄·가스·미스트·증기·...·스프레이를 흡입하지 마시오.
P261 분진·흄·가스·미스트·증기·...·스프레이의 흡입을 피하시오.
P264 취급 후에는 손을 철저히 씻으시오.
P264 취급 후에는 손을 철저히 씻으시오.
P270 이 제품을 사용할 때에는 먹거나, 마시거나 흡연하지 마시오.
P271 옥외 또는 환기가 잘 되는 곳에서만 취급하시오.
P280 보호장갑/보호의/보안경/안면보호구를 착용하시오.
P303+P361+P353 피부(또는 머리카락)에 묻으면 오염된 모든 의복은 벗거나 제거하시오 피부를 물로 씻으시오/샤워하시오.
P305+P351+P338 눈에 묻으면 몇 분간 물로 조심해서 씻으시오. 가능하면 콘택트렌즈를 제거하시오. 계속 씻으시오.
P307+P311 노출된 경우,독성 물질 센터 또는 의사에게 전화하기
P337+P313 눈에 대한 자극이 지속되면 의학적인 조치· 조언를 구하시오.
P370+P378 화재 시 불을 끄기 위해 (Section 5. 폭발, 화재시 대처방법의 적절한 소화제)을(를) 사용하시오.
P405 밀봉하여 저장하시오.
P403+P233 용기는 환기가 잘 되는 곳에 단단히 밀폐하여 저장하시오.
P403+P235 환기가 잘 되는 곳에 보관하고 저온으로 유지하시오.
P501 ...에 내용물 / 용기를 폐기 하시오.
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.

화학적 성질

Ethyl silicate is a flammable, colorless liquid with a mild, sweet, alcohol-like odor. 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. Occupational workers are exposed to ethyl silicate at workplaces associated with the manufacture and transportation of ethyl silicate, during use as a bonding agent for industrial buildings and investment castings, ceramic shells, crucibles, refractory bricks, and other molded objects, as a protective coating for heatand chemical-resistant paints, lacquers, and fi lms, in the manufacture of protective and preservative coatings for protection from corrosion (primarily as a binder for zinc dust paints), chemicals, heat, scratches, and fi re. Workers are also exposed to the chemical substance in the production of silicones; as a chemical intermediate in the preparation of soluble silica; as a gelling agent in organic liquids, as a coating agent inside electric lamp bulbs, in the synthesis of fused quartz, and during industrial use in the textile industry in aqueous emulsions, deluster, and fi reproofi ng; as a component of lubricants; as a mold-release agent; and as a heat-resistant adhesive.

화학적 성질

Ethyl silicate is a colorless, flammable liquid with a sharp odor detectable @ 85 ppm


Commonly used as a precursor to prepare xerogel1,2


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


In weatherproofing and hardening stone, arresting decay and disintegration; manufacture of weatherproof and acidproof mortars and cements. In the "lost wax" process for casting of high-melting alloys.

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 diffi culty, tremor, fatigue, narcosis, nausea, and vomiting. Prolonged periods of skin contact may produce drying, cracking, infl ammation, 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.


Inhalation of vapor causes eye and nose irritation, unsteadiness, tremors, salivation, respiratory difficulty, and unconsciousness. Contact with liquid irritates eyes and may cause dryness, cracking, and inflammation of skin. Ingestion may produce nausea, vomiting, and cramps.


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.

에틸실리케이트 준비 용품 및 원자재


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