스티렌 모노머
스티렌 · 비닐벤젠 · 스티렌모노머,억제제 · 에텐일벤젠 · 페닐에텐 · 스타이렌 · 스티렌모노머 · 페닐에틸렌
식별자 및 물리적 특성
| CAS No. | 100-42-5 |
|---|---|
| 분자식 | C8H8 |
| 평균 분자량 | 104.15 g/mol |
| 단동위원소 질량 | 104.06260026 g/mol |
| SMILES | C=Cc1ccccc1 |
| InChIKey | PPBRXRYQALVLMV-UHFFFAOYSA-N |
| PubChem CID | 7501 |
| ChEMBL | CHEMBL285235 |
| ChEBI | CHEBI:27452 |
| EC No. | 202-851-5 |
| DTXSID | DTXSID2021284 |
| 현지명 | 스티렌 모노머 |
화학 및 물리적 성질
| XLogP | 2.9 |
|---|---|
| 극성 표면적 | 0 |
| 수소 결합 공여자 수 | 0 |
| 수소 결합 수용자 수 | 0 |
| 회전 가능 결합 수 | 1 |
| 무거운 원자 수 | 8 |
| 형식 전하 | 0 |
| 복잡도 | 68 |
| 녹는점 | -31 °C (lit.) |
| 끓는 점 | 145-146 °C (lit.) |
| 밀도 | 0.906 g/mL at 25 °C |
| 증기 밀도 | 3.6 (vs air) |
| 증기압 | 12.4 mm Hg ( 37.7 °C) |
| 굴절률 | n20/D 1.546(lit.) |
| 인화점 | 88 °F |
| 저장 조건 | Store at <= 20°C. |
| 용해도 | 0.24g/L |
| 물리적 상태 | 액체 |
| pKa(산도 계수) | >14 (Schwarzenbach et al., 1993) |
| 비중 | 0.909 |
| 색상 | 무색의 |
| 냄새 | 트리아세틴 중 0.10%. 달콤한 발삼 꽃무늬 플라스틱 |
| 향취 유형 | 발사믹 |
| 후각 역치 | 0.035ppm |
| 폭발한계 | 1.1-8.9%(V) |
| 생물학적 소스 | synthetic |
| 용해도 | 0.3g/L(20℃) |
| 비열 | Cp(liquid): 1.75 J/(g·K), at 25℃ |
| Merck | 14,8860 |
| BRN | 1071236 |
| 헨리 상수 | (x 10-3 atmm3/mol): 3.91 at 25 °C (static headspace-GC, Welke et al., 1998) |
| 유전율 | 2.4(25℃) |
| 안정성 | Stable, but may polymerize upon exposure to light. Normally shipped with a dissolved inhibitor. Substances to be avoided include strong acids, aluminium chloride, strong oxidizing agents, copper, copper alloys, metallic salts, polymerization catalysts and accelerators. Flammable - vapour may travel considerable distance to ignition source |
| 주요 응용 | 환경 |
| 화장품 원료 기능 | 용제 |
| InChI | 1S/C8H8/c1-2-8-6-4-3-5-7-8/h2-7H,1H2 |
| InChIKey | PPBRXRYQALVLMV-UHFFFAOYSA-N |
| SMILES | C=Cc1ccccc1 |
| LogP(분배 계수) | 2.96 at 25℃ |
| NIST | Styrene(100-42-5) |
| EPA | Styrene (100-42-5) |
화학적 성질
Styrene is a colorless or yellow, sweet odor liquid with a penetrating odor. It is produced during alkylation of benzene with ethylene. It is highly reactive and polymerizes rapidly with a violent explosive reaction. This demands proper handling, transportation, and storage by adding polymerization inhibitors in adequate quantities during these operations. Styrene monomer has been extensively used in the manufacture of chemical intermediates, fi lling components, plastics, resins, and stabilizing agents.
안전 및 규제
| 직업 노출 등급(OEB) | A |
|---|---|
| 직업 노출 한계(OEL) | TWA: 50 ppm (215 mg/m3), STEL: 100 ppm (425 mg/m3) |
| 수질 위해 등급(WGK) | 2 |
| 즉시 생명 위험 농도 | 700 ppm |
| TSCA 등재 상태 | TSCA listed |
| RTECS 번호 | WL3675000 |
| 운송 번호(UN) | UN 2055 (STYRENE MONOMER, STABILIZED) |
| 독성 | LD50 in mice (mg/kg): 660 ± 44.3 i.p.90 ± 5.2 i.v. |
| 관세 코드 | 2902 50 00 |
| 위험 문구(R) | 10-20-36/38-40-36/37/38-39/23/24/25-23/24/25-11-48/20-63 |
| 위험 표시 | Xn,T,F |
| 안전 문구(S) | 23-36-26-16-45-36/37-7-46 |
| 포장분류 | III |
| 위험 등급 | 3Acute Tox. 4 InhalationAquatic Chronic 3Asp. Tox. 1Eye Irrit. 2Flam. Liq. 3Repr. 2Skin Irrit. 2STOT RE 1 InhalationSTOT SE 3 |
| 기존화학 물질 | KE-35342 |
| 자연 발화 온도 | 914 °F |
| 저장 분류 | 3 - Flammable liquids |
| 유해 물질 데이터 | 100-42-5(Hazardous Substances Data) |
| 중점관리물질 필터링 | 별표1-47 |
용도
개요
화학명은 비닐벤젠으로 일명 스티롤이라고도 한다. 무색의 액체이며 비중은 0.9로 물보다 낮고 비등점은 섭씨 1백45.1도, 인화점은 섭씨 32도이다. 유화제품을 크게 지방족탄화수소와 방향족탄화수소로 나누면 후자에 속하며 방향족의 벤젠계, 톨루엔계 크실렌계, 중벤젠계에 속하는 중간원료다.
용도
폴리스틸렌, ABS, SBR 제조용으로 사용
개요
Styrene has a characteristic, sweet, balsamic, almost floral odor that is extremely penetrating. Styrene occurs naturally in plants. It was first isolated from a resin called storax obtained from the inner bark of the Oriental sweet gum tree (Liquidambar orientalis) by Bonastre. In 1839, the German apothecary Eduard Simon prepared styrene by distilling it from storax and called it styrol. Simon observed it solidifi ed into a rubbery substance after being stored and believed it had oxidized into styrol oxide. Subsequent analysis showed the solid did not contain oxygen and it was renamed metastyrol. This was the first written record of polymerization in chemistry. In 1845, the English chemist, John Blyth, and the German chemist, August Wilhelm von Hofmann (1818 1892), observed that styrene was converted to polystyrene by sunlight and that styrene could be polymerized to polystyrene by heating in the absence of oxygen. It took another 70 years for the polymerization of styrene to be described by Hermann Staudinger (1881 1965) in the 1920s. This laid the foundation for the commercial polystyrene industry that developed in the 1930s.
용도
메트포르민은 다낭성 난소 증후군치료에도 사용되며 다른 적응증도 연구중이다. 메트포르민은 간에서 포도당의 생성을 억제한다.
출처
Reported found in cranberry and bilberry, currants, grape, parsley, milk and dairy products, whiskey, cocoa, coffee, tea, roasted filberts and roasted peanuts. Also reported found in fresh apple, guava fruit, pineapple, vinegar, butter, fish oil, black tea, roasted filbert, roasted peanut, soybean, plum brandy, apple brandy, Brazil nut, rice bran, Bourbon vanilla, grapes, peach, strawberry, onion, peas, bell pepper, cassia leaf, cheeses, parsley, milk, boiled and scrambled egg, lean fish, fish oil, cooked chicken and beef, rum, malt and Scotch whiskey, cider, grape, wine, cocoa, coffee, honey, cloudberry, plum, rose apple, beans, trassi, walnut, buckwheat, soursop, watercress, kiwifruit, wild rice, sapodilla fruit, nectarine, okra, crab, crayfish and pawpaw.
용도
Styrene (monomer) is a viscous, highly flammable liquid that evaporates easily and polymerizes readily to polystyrene unless a stabilizer is added. Styrene is used in multiple industries, especially in reinforced plastics (e.g., fiberglass boats), and is widely used to make plastics and rubber, packaging materials (e.g., packing peanuts ), insulation for buildings, plastic pipes, food containers (e.g., takeout containers), and carpet backing) (ATSDR, 2010).
일반 설명
A clear colorless to dark liquid with an aromatic odor. Flash point 90°F. Density 7.6 lb/gal. Vapors heavier than air and irritating to the eyes and mucous membranes. Subject to polymerization. If the polymerization takes place inside a closed container, the container may rupture violently. Less dense than water and insoluble in water. Used to make plastics, paints, and synthetic rubber.
제조 및 합성 방법
생산 방법
Styrene is made by dehydrogenation of ethylbenzene at high temperature using metal catalysts: C6H5CH2CH2(g)→ C6H5CH = CH2(g) + H2(g). This is called the EB/SM (ethylbenzene/styrene monomer) process. Styrene can also be made by PO/SM (propylene oxide/styrene monomer) process). This process starts by oxidizing ethylbenzene (C6H5CH2CH2) to its hydroperoxide (C6H5CH(OOH)CH3), which is then used to oxidize propylene (CH3CH = CH2) to produce propylene oxide (CH3CH2CHO) and phenylethanol (C6H5CH(OH)CH3). The phenylethanol is then dehydrated to give styrene and water. Styrene can also be synthesized by reacting benzene and ethylene or natural gas.
제조 방법
Prepared from ethylbenzene or from phenylethanol.