에틸메르캅탄
에틸머캅탄 · 에탄에티올 · 에틸머캡탄 · 에틸메르캅탄 · 에틸 머캅탄 · ETHYL MERCAPTAN · C2H5SH · Ethanthiol
식별자 및 물리적 특성
| CAS No. | 75-08-1 |
|---|---|
| 분자식 | C2H6S |
| 평균 분자량 | 62.14 g/mol |
| 단동위원소 질량 | 62.01902119 g/mol |
| SMILES | CCS |
| InChIKey | DNJIEGIFACGWOD-UHFFFAOYSA-N |
| PubChem CID | 6343 |
| ChEBI | CHEBI:46511 |
| EC No. | 200-837-3 |
| DTXSID | DTXSID9026394 |
| 현지명 | 에틸메르캅탄 |
화학 및 물리적 성질
| XLogP | 0.9 |
|---|---|
| 극성 표면적 | 1 |
| 수소 결합 공여자 수 | 1 |
| 수소 결합 수용자 수 | 1 |
| 회전 가능 결합 수 | 0 |
| 무거운 원자 수 | 3 |
| 형식 전하 | 0 |
| 복잡도 | 2.8 |
| 물질 분류 | Other Classes -> ThiolsFlammable agents - 4th degree |
| SpringerMaterials Properties | Schoenflies notation |
| 농약 | RodenticidesActive substance -> EU Pesticides database: Not approved |
| LogP(분배 계수) | 1.5 |
| 냄새 | Leek-like odorPenetrating garlic-like odorStrong, skunk-like odor.강한 덩어리공격적인 마늘. |
| 식품 첨가물 | FLAVORING AGENT OR ADJUVANT -> FDA Substance added to food |
| 밀도 | 0.826 at 68 °F (USCG, 1999) - Less dense than waterwill float0.8315 at 25 °C/4 °CRelative density (water = 1): 0.8390.833-0.8390.8315 @25 °C0.839 g/mL at 25 °C(lit.) |
| 향미제 | EU Flavoring substances |
| Viscosity | 0.003155 g/cm sec at 20 °C |
| Color/Form | Colorless liquid [Note: A gas above 95 degrees F]. |
| 용해도 | 0.7 % (NIOSH, 2024)Soluble in alcohol, ether, petroleum naphthaSoluble in acetone, dilute alkaliIn water, 15,603 mg/L at 25 °CSolubility in water, g/100ml at 20 °C: 0.68Slightly soluble in water에테르, 알코올, 아세톤에 용해됨 |
| 인화점 | less than 0 °F (USCG, 1999)-48.3 C-48.3 °C (Closed cup)-54 °C (Closed cup)-55 °F1 °F |
| 녹는점 | -148 °C |
| 끓는 점 | 35 °C(lit.) |
| 증기 밀도 | 2.1 (vs air) |
| 증기압 | 8.51 psi ( 20 °C) |
| 굴절률 | n20/D 1.4306(lit.) |
| FEMA | 4258 | ETHANETHIOL |
| 저장 조건 | Store below +30°C. |
| 물리적 상태 | 액체 |
| pKa(산도 계수) | 10.6(at 25℃) |
| 색상 | 무색의 |
| 생물학적 소스 | synthetic |
| 폭발한계 | 2.8-18%(V) |
| 후각 역치 | 0.0000087ppm |
| 용해도 | 물과 약간 섞임. |
| 비열 | Cp(liquid): 1.9 J/(g·K)Cp(gas): 1.17 J/(g·K), at 25℃ |
| JECFA Number | 1659 |
| Merck | 14,3726 |
| BRN | 773638 |
| 헨리 상수 | 3.57(x 10-3 atmm3/mol) at 25 °C (Przyjazny et al., 1983) |
| 유전율 | 6.9(14℃) |
| 안정성 | 안정적인. 인화성이 매우 높으며 인화점이 낮습니다. 산화제, 강산과 호환되지 않습니다. 공기와 폭발성 혼합물을 형성할 수 있음. |
| 주요 응용 | 청소용품화장품향료 및 향음식 및 음료개인 위생 관리 |
| InChI | 1S/C2H6S/c1-2-3/h3H,2H2,1H3 |
| InChIKey | DNJIEGIFACGWOD-UHFFFAOYSA-N |
| SMILES | CCS |
| LogP(분배 계수) | 1.44 |
| NIST | Ethanethiol(75-08-1) |
| EPA | Ethyl mercaptan (75-08-1) |
안전 및 규제
| GHS 분류 | DangerH224: Extremely flammable liquid and vapor [Danger Flammable liquids]P210, P233, P240, P241, P242, P243, P261, P264, P270, P271, P273, P280, P301+P317, P303+P361+P353, P304+P340, P316, P321, P330, P370+P378, P391, P403+P233, P403+P235, P405, and P501 (click each P-code to see the statement)H225 (93.1%): Highly Flammable liquid and vapor [Danger Flammable liquids]P210, P233, P240, P241, P242, P243, P261, P264, P270, P271, P273, P280, P301+P317, P303+P361+P353, P304+P340, P317, P330, P370+P378, P391, P403+P235, and P501 (click each P-code to see the statement) |
|---|---|
| 규제 정보 | Chemical: EthanethiolCommission Regulation (EC) No 1565/2000 (Repealed by Com. Implementing Reg. (EU) No 872/2012)Ethanethiol is listed on the EPA's Chemical Data Reporting (CDR) system. Manufacturers and importers of Ethanethiol 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: 16-02-2018 https://echa.europa.eu/registration-dossier/-/registered-dossier/2123Ethanethiol: HSNO Approval: HSR001043 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 | Special Hazards of Combustion Products: Irritating fumes of sulfur dioxide are generated.· HIGHLY FLAMMABLE: Will be easily ignited by heat, sparks or flames.Extremely flammable. Gives off irritating or toxic fumes (or gases) in a fire. Vapour/air mixtures are explosive. |
| 화재 가능성 | Dangerous, when exposed to heat or flame or oxidizers.Minimum ignition temperature in air: 299 °Cin oxygen: 261 °CCan react vigorously with oxidizing materials.Extremely flammable. |
| 건강 유해성 | Inhalation of vapor causes muscular weakness, convulsions, respiratory paralysis. High concentrations may cause pulmonary irritation. Liquid irritates eyes and skin. Ingestion causes nausea and irritation of mouth and stomach. (USCG, 1999) |
용도
개요
Ethane thiol, commonly known as ethyl mercaptan, is a colorless gas or clear liquid with a distinct odor. It is an organosulfur compound with the formula CH3CH2SH. Abbreviated EtSH, it consists of an ethyl group (Et), CH3CH2, attached to a thiol group, SH. Its structure parallels that of ethanol, but with S instead of O. The odor of EtSH is infamous. Ethanethiol is more volatile than ethanol due to a diminished ability to engage in hydrogen bonding. Ethanethiol is toxic. It occurs naturally as a minor component of petroleum, and may be added to other wise odorless gaseous products such as liquefied petroleum gas (LPG) to help warn of gas leaks. At these concentrations, ethanethiol is not harmful.
용도
Ethanethiol is used as an intermediate inthe manufacture of insecticides, plastics, andantioxidants; and as an additive to natural gasto give odor. It occurs in illuminating gas andin petroleum distillates.
일반 설명
A clear colorless low-boiling liquid (boiling point 97°F) with an overpowering, garlic-like/skunk-like odor. Flash point -55°F. Less dense than water and very slightly soluble in water. Vapors are heavier than air. Vapors may irritate nose and throat. May be toxic if swallowed, by inhalation or by contact. Added to natural gas as an odorant. Used as a stabilizer for adhesives.
제조 및 합성 방법
제조 방법
Ethanethiol is prepared by the reaction of ethylene with hydrogen sulfide over a catalyst. The various producers utilize different catalysts in this process. It is also be prepared commercially by the reaction of ethanol with hydrogen sulfide gas over an acidic solid catalyst, such as alumina. Ethanethiol was originally reported by Zeiss in 1834 . Zeise treated calcium ethyl sulfate with a suspension of barium sulfide saturated with hydrogen sulfide. He is credited with naming the C2H5S- group as mercaptum. Ethanethiol can also be prepared by a halide displacement reaction, where ethyl halide is reacted with aqueous sodium bisulfide. This conversion was demonstrated as early as 1840 by Henri Victor Regnault.
생산 방법
Ethyl mercaptan is prepared by distilling ethyl potassium sulfate with potassium hydrogen sulfide. Additional mercaptans can be prepared in a similar manner with the corresponding proper ingredients.