Huagongshe화공사 화학 정보 인쇄 보고서 · 연구 참고용
에틸실리케이트
에틸실리케이트 · 규산에틸 · 에틸 실리케이트 · 78-10-4 · TEOS · TETRAETHYL ORTHOSILICATE · TETRAETHOXYSILANE · TETRAETHYL SILICATE
식별자 및 물리적 특성
| CAS No. | 78-10-4 |
|---|---|
| 분자식 | C8H20O4Si |
| 평균 분자량 | 208.33 g/mol |
| 단동위원소 질량 | 208.11308565 g/mol |
| SMILES | CCO[Si](OCC)(OCC)OCC |
| InChIKey | BOTDANWDWHJENH-UHFFFAOYSA-N |
| PubChem CID | 6517 |
| ChEMBL | CHEMBL3187981 |
| EC No. | 201-083-8 |
| DTXSID | DTXSID6026450 |
| 현지명 | 에틸실리케이트 |
화학 및 물리적 성질
| 극성 표면적 | 36.9 |
|---|---|
| 수소 결합 공여자 수 | 0 |
| 수소 결합 수용자 수 | 4 |
| 회전 가능 결합 수 | 8 |
| 무거운 원자 수 | 13 |
| 형식 전하 | 0 |
| 복잡도 | 91.2 |
| 물질 분류 | Metals -> Metalloid Compounds (Silicon)Flammable agents - 3rd degree |
| SpringerMaterials Properties | Boiling point |
| 냄새 | SHARP, ESTER-LIKE ODORFaint odorSharp alcohol-like odor |
| 밀도 | 0.933 at 68 °F (USCG, 1999) - Less dense than waterwill float0.933 at 20 °CBulk density: 7.8 lbs/gal at 20 °CRelative density (water = 1): 0.930.9320 @ 20°C0.933 g/mL at 20 °C(lit.) |
| Viscosity | 0.6 cP at 25 °C |
| Color/Form | Colorless liquidWater-white |
| 용해도 | Reacts with water (NIOSH, 2024)Soluble in etherSlightly soluble in benzeneMiscible with alcoholDecomposes in waterSolubility in water: slowly hydrolyzes에탄올과 2-프로판올에 용해됩니다. |
| 인화점 | 99 °F (USCG, 1999)125 °F (52 °C) (Open cup)99 °F (Closed cup)37 °CC, closed-cup37 °C c.c.116 °F |
| 끓는 점 | 336 °F at 760 mmHg (USCG, 1999)168.8 °C168 °C168.8 °C @760 [mm Hg]168 °C(lit.) |
| Decomposition | When heated to decomposition it emits acrid smoke and fumes. |
| 녹는점 | -121.9 °F (USCG, 1999)-82.5 °C-77 °C-117 °F |
| 증기 밀도 | 7.22 (Air = 1)Relative vapor density (air = 1): 7.227.2 (vs air) |
| 증기압 | <1 mm Hg ( 20 °C) |
| 굴절률 | n20/D 1.382(lit.) |
| 저장 조건 | Store below +30°C. |
| 물리적 상태 | 액체 |
| 비중 | 0.934 |
| 색상 | 무색의 |
| pH | 7 (20°C) |
| 폭발한계 | 1.3-23%(V) |
| 용해도 | 가수 분해 |
| 비열 | Cp(liquid): 1.75 J/(g·K), at 25℃ |
| Merck | 14,3851 |
| BRN | 1422225 |
| 헨리 상수 | 4.9×10-1 mol/(m3Pa) at 25℃, HSDB (2015) |
| 유전율 | 4.1(20℃) |
| 안정성 | 안정적인. 가연성. 강한 산화제, 물, 알칼리, 무기산과 호환되지 않습니다. |
| InChI | 1S/C8H20O4Si/c1-5-9-13(10-6-2,11-7-3)12-8-4/h5-8H2,1-4H3 |
| InChIKey | BOTDANWDWHJENH-UHFFFAOYSA-N |
| SMILES | CCO[Si](OCC)(OCC)OCC |
| NIST | Silicic acid (H4sio4), tetraethyl ester(78-10-4) |
| EPA | Tetraethyl silicate (78-10-4) |
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.
안전 및 규제
| GHS 분류 | WarningH226: Flammable liquid and vapor [Warning Flammable liquids]P210, P233, P240, P241, P242, P243, P261, P264+P265, P271, P280, P303+P361+P353, P304+P340, P305+P351+P338, P317, P319, P337+P317, P370+P378, P403+P233, P403+P235, P405, and P501 (click each P-code to see the statement)This chemical does not meet GHS hazard criteria for < 0.1% (1 of 1197) of reports.H226 (> 99.9%): Flammable liquid and vapor [Warning Flammable liquids] |
|---|---|
| 규제 정보 | Chemical: Silicic acid (H4SiO4), tetraethyl esterRegulation (EC) No 1935/2004 (amended)Silicic acid (H4SiO4), tetraethyl ester is listed on the EPA's Chemical Data Reporting (CDR) system. Manufacturers and importers of Silicic acid (H4SiO4), tetraethyl ester are required to report information about their production and use of this chemical to the EPA under the Toxic Substances Control Act (TSCA). (40 eCFR Part 711)Status: Active Update: 15-05-2023 https://echa.europa.eu/registration-dossier/-/registered-dossier/14920Silicic acid, tetraethyl ester: HSNO Approval: HSR001223 Approved with controlsThe New Jersey Worker and Community Right to Know Act requires public and private employers to provide information about hazardous substances at their workplaces. (N.J.S.A. 34:5A-1 et. seq.) |
| 운송 라벨(DOT) | Flammable Liquid |
| 화재 위험 | Excerpt from ERG Guide 129 [Flammable Liquids (Water-Miscible / Noxious)]:· HIGHLY FLAMMABLE: Will be easily ignited by heat, sparks or flames.Flammable. Above 37 °C explosive vapour/air mixtures may be formed. |
| 화재 가능성 | Flammable liquid when exposed to heat or flamecan react vigorously with oxidizing materials. |
| 건강 유해성 | 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. (USCG, 1999)· May cause toxic effects if inhaled or absorbed through skin. |
| 유해성 요약 | Rats that survived concentrations of 400 ppm for 7 hours/day for 30 days show liver, kidney, and lung damage. [ACGIH] Causes eye irritation at 250 ppm and tearing at 1,200 ppm |
용도
용도
Tetraethyl Orthosilicate is used in the preparation of antidreflective coatings on silicate glass via silicon dioxide. Crosslinking reagent.
일반 설명
A clear colorless liquid with a faint odor. Flash point 125°F. Less dense than water. Vapors are heavier than air.
제조 및 합성 방법
생산 방법
Prepared from absolute alcohol and silicon tetrachloride.