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에틸벤젠

에틸벤젠
에틸벤젠 구조식 이미지
카스 번호:
100-41-4
한글명:
에틸벤젠
동의어(한글):
에틸벤젠;에틸번젠
상품명:
Ethylbenzene
동의어(영문):
EB;ET2O;ETHER;NSC 406903;NCI-C56393;Ethylenzee;ethylenzene;ETHYL OXIDE;Ethylbenzol;Etilbenzene
CBNumber:
CB4672779
분자식:
C8H10
포뮬러 무게:
106.17
MOL 파일:
100-41-4.mol

에틸벤젠 속성

녹는점
−95 °C(lit.)
끓는 점
136 °C(lit.)
밀도
0.867 g/mL at 25 °C(lit.)
증기 밀도
3.7 (vs air)
증기압
28.69 psi ( 55 °C)
굴절률
n20/D 1.495(lit.)
인화점
72 °F
저장 조건
Store below +30°C.
용해도
0.2g/l
물리적 상태
Liquid
색상
Colorless
상대극성
0.117
냄새
Aromatic.
Odor Threshold
0.17ppm
폭발한계
1.0-7.8%(V)
수용성
0.0206 g/100 mL
어는점
-95℃
Merck
14,3765
BRN
1901871
Henry's Law Constant
13.9(x 10-3 atm?m3/mol) at 45.00 °C, 15.1 at 50.00 °C, 17.1 at 55.00 °C, 20.1 at 60.00 °C, 20.9 at 65.00 °C, 22.7 at 70.00 °C, 34.3 at 80.00 °C (static headspace-GC, Park et al., 2004)
노출 한도
TLV-TWA 100 ppm (~433 mg/m3) (ACGIH, NIOSH, MSHA, and OSHA); STEL 125 ppm (541 mg/m3) (ACGIH); IDLH 2000 ppm (NIOSH).
안정성
Stable. Incompatible with oxidizing agents. Flammable.
InChIKey
YNQLUTRBYVCPMQ-UHFFFAOYSA-N
CAS 데이터베이스
100-41-4(CAS DataBase Reference)
NIST
Ethylbenzene(100-41-4)
IARC
2B (Vol. 77) 2000
EPA
Ethylbenzene (100-41-4)
안전
  • 위험 및 안전 성명
  • 위험 및 사전주의 사항 (GHS)
위험품 표기 F+,Xn,Xi,F,T
위험 카페고리 넘버 63-11-20/22-36/38-40-48/20-65-20-48/20/22-38-22-39/23/24/25-23/24/25-2017/11/20
안전지침서 9-16-29-33-24/25-36/37-36-45-36/37/39-26-23-53-7-24-62
유엔번호(UN No.) UN 1175 3/PG 2
WGK 독일 1
RTECS 번호 KI5775000
F 고인화성물질 10
자연 발화 온도 810 °F
TSCA Yes
HS 번호 2902 60 00
위험 등급 3
포장분류 II
유해 물질 데이터 100-41-4(Hazardous Substances Data)
독성 LD50 orally in rats: 5.46 g/kg (Smyth)
기존화학 물질 KE-13532
그림문자(GHS):
신호 어: Danger
유해·위험 문구:
암호 유해·위험 문구 위험 등급 범주 신호 어 그림 문자 P- 코드
H225 고인화성 액체 및 증기 인화성 액체 구분 2 위험 P210,P233, P240, P241, P242, P243,P280, P303+ P361+P353, P370+P378,P403+P235, P501
H302 삼키면 유해함 급성 독성 물질 - 경구 구분 4 경고 P264, P270, P301+P312, P330, P501
H304 삼켜서 기도로 유입되면 치명적일 수 있음 흡인 유해성물질 구분 1 위험
H315 피부에 자극을 일으킴 피부부식성 또는 자극성물질 구분 2 경고 P264, P280, P302+P352, P321,P332+P313, P362
H319 눈에 심한 자극을 일으킴 심한 눈 손상 또는 자극성 물질 구분 2A 경고 P264, P280, P305+P351+P338,P337+P313P
H320 눈에 자극을 일으킴 심한 눈 손상 또는 자극성 물질 구분 2B 경고 P264, P305+P351+P338,P337+P313
H331 흡입하면 유독함 급성 독성 물질 흡입 구분 3 위험 P261, P271, P304+P340, P311, P321,P403+P233, P405, P501
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
H351 암을 일으킬 것으로 의심됨 (노출되어도 암을 일으키지 않는다는 결정적인 증거가 있는 노출경로가 있다면 노출경로 기재) 발암성 물질 구분 2 경고 P201, P202, P281, P308+P313, P405,P501
H360 태아 또는 생식능력에 손상을 일으킬 수 있음 생식독성 물질 구분 1A, 1B 위험
H361 태아 또는 생식능력에 손상을 일으킬 것으로 의심됨 생식독성 물질 구분 2 경고 P201, P202, P281, P308+P313, P405,P501
H371 장기(또는, 영향을 받은 알려진 모든 장기를 명시)에 손상을 일으킬 수 있음(노출되어도 특정 표적장기 독성을 일으키지 않는다는 결정적인 노출경로가 있다면 노출경로를 기재) 특정 표적장기 독성 - 2회 노출 구분 2 경고 P260, P264, P270, P309+P311, P405,P501
H372 장기간 또는 반복 노출되면 장기(또는, 영향을 받은 알려진 모든 장기를 명시)에 손상을 일으킴 특정 표적장기 독성 - 반복 노출 구분 1 위험 P260, P264, P270, P314, 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
H400 수생생물에 매우 유독함 수생 환경유해성 물질 - 급성 구분 1 경고 P273, P391, P501
예방조치문구:
P201 사용 전 취급 설명서를 확보하시오.
P202 모든 안전 조치 문구를 읽고 이해하기 전에는 취급하지 마시오.
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.
P273 환경으로 배출하지 마시오.
P280 보호장갑/보호의/보안경/안면보호구를 착용하시오.
P331 토하게 하지 마시오.
P391 누출물을 모으시오.
P301+P310 삼켰다면 즉시 의료기관(의사)의 진찰을 받으시오.
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.
P308+P313 노출 또는 접촉이 우려되면 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.
NFPA 704
3
2 0

에틸벤젠 C화학적 특성, 용도, 생산

물성

방향족 탄화수소로 특유한 냄새가 나는 무색의 액체로서, 분자량 106.2, 녹는점 -94.98℃, 끓는점 136.19℃, 비중 0.86705(20℃), 굴절률=1.49588이다.

생산/준비/합성

공업적으로는 염화알루미늄·삼플루오르화붕소·인산등을촉매로하여벤젠에에틸렌을불어넣어제조한다.

물성

멘톨 크리스탈있습니다 냉각, 상큼, 및 기분좋게 강한 박하 아로마. 그들은 자주 화장품, salves, 발삼, 약용 크림, 목이 로젠, 치약, 구강, 껌 발 스프레이, 통증 완화 또는 냉각 바디 제품, 샴푸, 에어컨 liniments, 면도 크림, 구강 또는 목이 스프레이, 압축, 약용 오일, 냉각 젤. 멘톨 크리스탈 우수한 제품을 사용 도움이 완화 근육 통증, 기침, 주문폭주, 독감, 상부 호흡기. 이후 멘톨 크리스탈 너무 집중, 아주 작은 금액 내에서 필요한 제품.

용도

페놀프탈레인은 약한 유기산.용액 ph가 8.2 미만인 경우 무색의 락톤 형 구조.적색 퀴 노이드 구조에 대한 ph> 8.2 일 때.페놀프탈레인 색상 범위는 8.2 ~ 10.0, 그래서 phenolphthalein은 알칼라인성 검사 만 할 수 있습니다. 산성 시험.
1. 제약 산업 제약 원료:약물 요법,장 벽을 자극 할 수있다., 배변을 촉진하는 장 연동.
2. 유기 합성에 사용:주로 플라스틱의 합성에 사용,특히 디 나이트 로젠 나프탈렌 폴리 (아릴 에테르 케톤 케톤 폴리머 폴리) 아릴 에테르 케톤의 합성.고분자는 내열성이 우수하다.,방수,내식성,노화 방지 성 및 양호한 성형 성.섬유로 만든, 코팅 및 그 복합 재료는 많은 분야에서 널리 응용되고있다., 전자 제품, 기계 설비, 교통, 항공 우주, 핵 엔지니어링 및 군사 및 기타 분야.
3. 알칼리 표시기에 사용:비 수용액 적정 지시약, 크로마토 그래피 분석 시약.

화학적 성질

Ethylbenzene is a colorless liquid. Pungent aromatic odor. The Odor Threshold is 0.0920.60 ppm

물리적 성질

Clear, colorless liquid with a sweet, gasoline-like odor. At 40 °C, the average odor threshold concentration and the lowest concentration at which an odor was detected were 550 and 150 μg/L, respectively. Similarly, at 25 °C, the average taste threshold concentration and the lowest concentration at which a taste was detected were 780 and 390 μg/L, respectively (Young et al., 1996). The average least detectable odor threshold concentrations in water at 60 °C and in air at 40 °C were 2.4 and 72 μg/L, respectively (Alexander et al., 1982). Cometto-Mu?iz and Cain (1994) reported an average nasal pungency threshold concentration of 10,100 ppmv.

출처

Has apparently not been reported to occur in nature.

용도

Primarily used in the production of styrene; also used as an industrial solvent, as a constituent of asphalt and naptha, and as an antiknock agent in aviation and motor fuels

용도

Ethylbenzene is used as a solvent and as anintermediate to produce styrene monomer.

용도

Anesthetic.
Ethylbenzene is almost exclusively (> 99%) used as an intermediate for the production of styrene monomer. Less than 1 % of the ethylbenzene produced is used as a paint solvent or as an intermediate for the production of diethylbenzene and acetophenone (IARC 2000).
Ethylbenzene is a constituent (15-20%) of commercial xylene (“mixed xylenes”), and hence used as a component of solvents, as a diluent in paints and lacquers, and as a solvent in the rubber and chemical manufacturing industries (WHO 1996).
Ethylbenzene has been added to motor and aviation fuels because of its anti-knock properties. Estimates of ethylbenzene in gasoline have ranged from <1-2.7%. (IARC 2000).

정의

ethylbenzene: A colourless flammableliquid, C6H5C2H5; r.d. 0.867;m.p. –95°C; b.p. 136°C. It is madefrom ethene and ethybenzene by aFriedel–Crafts reaction and is usedin making phenylethene (for polystyrene).

제조 방법

By Friedel-Crafts reaction on benzene, ethylbromide and aluminium chloride (Arc tander, 1969).
Ethylbenzene is manufactured by alkylation from benzene and ethylene.

생산 방법

Ethylbenzene is produced by alkylation of benzene with ethylene, except for a very small fraction that is recovered from mixed C8 aromatics by superfractionation. The reaction takes place on acidic catalysts and can be carried out either in the liquid or vapor phase.

Synthesis Reference(s)

Chemistry Letters, 12, p. 909, 1983
Journal of the American Chemical Society, 85, p. 2768, 1963 DOI: 10.1021/ja00901a021
Tetrahedron Letters, 11, p. 4401, 1970

일반 설명

A clear colorless liquid with an aromatic odor. Flash point 59°F. Less dense than water (at 7.2 lb / gal) and insoluble in water. Hence floats on water. Vapors heavier than air. Used as a solvent and to make other chemicals.

공기와 물의 반응

Highly flammable. Insoluble in water.

반응 프로필

Ethylenzene can react vigorously with strong oxidizing materials .

위험도

Toxic by ingestion, inhalation, and skin absorption; irritant to skin and eyes. Flammable, dangerous fire risk. Possible carcinogen.

건강위험

The acute toxicity of Ethylbenzene is low.At high concentrations its exposure producesnarcotic effects similar to benzene andtoluene. A 4-hour exposure to a concentrationof 4000 ppm proved fatal to rats. The lethaldose varies with species. Deaths resulted fromintense congestion and edema of the lungs.
Other than the narcotic effects, Ethylbenzeneexhibits irritant properties that are somewhatgreater than those of benzene or toluene.It is an irritant to the skin, eyes, and nose.Repeated contact with the liquid may causereddening of the skin and blistering. Thevapors at 200 ppm may cause mild irritationof the eyes in humans, which may becomesevere and lacrimating at 2000–3000 ppm.
The oral toxicity in animals was foundto be low to very low. An LD50 value of3500 mg/kg for rats has been documented(NIOSH 1986). No adverse effects werenoted in animals subjected to chronic inhalationexposure at below 400 ppm. At higherdosages only the liver was affected (ACGIH1986). Ethylbenzene is eliminated from thebody by metabolic excretion. The urinarymetabolites in humans are mainly mandelicacid, C6H5CH(OH)COOH, and benzoylformicacid, C6H5COCOOH.

화학 반응

Reactivity with Water No reaction; Reactivity with Common Materials: No reaction; Stability During Transport: Stable; Neutralizing Agents for Acids and Caustics: Not pertinent; Polymerization: Not pertinent; Inhibitor of Polymerization: Not pertinent.

Safety Profile

Moderately toxic by ingestion and intraperitoneal routes. Mildly toxic by inhalation and skin contact. An experimental teratogen. Other experimental reproductive effects. Human systemic effects by inhalation: eye, sleep, and pulmonary changes. An eye and skin irritant. Human mutation data reported. The liquid is an irritant to the skin and mucous membranes. A concentration of 0.1% of the vapor in air is an irritant to human eyes, and a concentration of 0.2% is extremely irritating at first, then causes dizziness, irritation of the nose and throat, and a sense of constriction in the chest. Exposure of guinea pigs to 1% concentration has been reported as causing ataxia, loss of consciousness, tremor of the extremities, and finally death through respiratory failure. The pathological findings were congestion of the brain and lungs with edema. A very dangerous fire and explosion hazard when exposed to heat or flame; can react vigorously with oxidizing materials. To fight fire, use foam, CO2, dry chemical. Emitted from modern budding materials (CENEAR 69,22,91). When heated to decomposition it emits acrid smoke and irritating fumes.

잠재적 노출

Ethylbenzene is used in styrene manufacture and in synthesis of p-nitroacetophenone; in the manufacture of cellulose acetate, and synthetic rubber. It is also used as a solvent or diluent; and as a component of automotive and aviation gasoline. Significant quantities of EB are present in mixed xylenes. These are used as dilatants in the paint industry, in agricultural sprays for insecticides and in gasoline blends (which may contain as much as 20% EB). In light of the large quantities of EB produced and the diversity of products in which it is found, there may exist environmental sources for ethylbenzene, e.g., vaporization during solvent use; pyrolysis of gasoline and emitted vapors at filling stations. Groups of individuals who are exposed to EB to the greatest extent and could represent potential pools for the expression of EB toxicity include: (1) individuals in commercial situations where petroleum products or by-products are manufactured e.g., rubber or plastics industry); (2) individuals residing in areas with high atmospheric smog generated by motor vehicle emissions

Source

Detected in distilled water-soluble fractions of 87 octane gasoline (2.38 mg/L), 94 octane gasoline (7.42 mg/L), Gasohol (3.54 mg/L), No. 2 fuel oil (0.21 mg/L), jet fuel A (0.41 mg/L), diesel fuel (0.17 mg/L), military jet fuel JP-4 (1.57 mg/L) (Potter, 1996), new motor oil (0.15 to 0.17 μg/L), and used motor oil (117 to 124 μg/L) (Chen et al., 1994). The average volume percent and estimated mole fraction in American Petroleum Institute PS-6 gasoline are 1.570 and 0.017, respectively (Poulsen et al., 1992). Diesel fuel obtained from a service station in Schlieren, Switzerland contained ethylbenzene at a concentration of 690 mg/L (Schluep et al., 2001). Kaplan et al. (1996) determined ethylbenzene concentrations in four different grades of gasolines. Average ethylbenzene concentrations were 9.1 g/L in regular unleaded gasoline, 8.0 g/L in leaded gasoline, 9.3 g/L in unleaded plus gasoline, and 10.1 g/L in Super unleaded gasoline. Thomas and Delfino (1991) equilibrated contaminant-free groundwater collected from Gainesville, FL with individual fractions of three individual petroleum products at 24–25 °C for 24 h. The aqueous phase was analyzed for organic compounds via U.S. EPA approved test method 602. Average ethylbenzene concentrations reported in water-soluble fractions of unleaded gasoline, kerosene, and diesel fuel were 2.025, 0.314, and 0.104 mg/L, respectively. When the authors analyzed the aqueous-phase via U.S. EPA approved test method 610, average ethylbenzene concentrations in water-soluble fractions of unleaded gasoline, kerosene, and diesel fuel were lower, i.e., 1.423, 0.171, and 0.079 mg/L, respectively.
Schauer et al. (1999) reported ethylbenzene in a diesel-powered medium-duty truck exhaust at an emission rate of 470 μg/km. California Phase II reformulated gasoline contained ethylbenzene at a concentration of 12,800 mg/kg. Gas-phase tailpipe emission rates from gasoline-powered automobiles with and without catalytic converters were 4.18 and 434.0 mg/km, respectively (Schauer et al., 2002).
Detected in 1-yr aged coal tar film and bulk coal tar at concentrations of 350 and 2,100 mg/kg, respectively (Nelson et al., 1996). A high-temperature coal tar contained ethylbenzene at an average concentration of 0.02 wt % (McNeil, 1983).
Identified as one of 140 volatile constituents in used soybean oils collected from a processing plant that fried various beef, chicken, and veal products (Takeoka et al., 1996).
Schauer et al. (2001) measured organic compound emission rates for volatile organic compounds, gas-phase semi-volatile organic compounds, and particle-phase organic compounds from the residential (fireplace) combustion of pine, oak, and eucalyptus. The gas-phase emission rate of ethylbenzene was 22.9 mg/kg of pine burned. Emission rates of ethylbenzene were not measured during the combustion of oak and eucalyptus.

환경귀착

Biological. Phenylacetic acid was reported to be the biooxidation product of ethylbenzene by Nocardia sp. in soil using n-hexadecane or n-octadecane as the substrate. In addition, Methylosinus trichosporium OB3b was reported to metabolize ethylbenzene to 2- and 3- hydroxybenzaldehyde with methane as the substrate (Keck et al., 1989). Ethylbenzene was oxidized by a strain of Micrococcus cerificans to phenylacetic acid (Pitter and Chudoba, 1990). A culture of Nocardia tartaricans ATCC 31190, growing in a hexadecane medium, oxidized ethylbenzene to 1-phenethanol, which oxidized to acetophenone (Cox and Goldsmith, 1979). When ethylbenzene (5 mg/L) was statically incubated in the dark at 25 °C with yeast extract and settled domestic wastewater inoculum, complete biodegradation with rapid acclimation was observed after 7 d. At a concentration of 10 mg/L, significant degradation occurred with gradual adaptation. Percent losses of 69, 78, 87, and 100 were obtained after 7, 14, 21, and 28-d incubation periods, respectively (Tabak et al., 1981). Olsen and Davis (1990) reported a first-order degradation rate constant of 0.07/yr and a half-life of 37 d.
Surface Water. The evaporation half-life of ethylbenzene in surface water (1 m depth) at 25 °C is estimated to be from 5 to 6 h (Mackay and Leinonen, 1975). Estimated half-lives of ethylbenzene (3.3 μg/L) from an experimental marine mesocosm during the spring (8–16 °C), summer (20–22 °C), and winter (3–7 °C) were 20, 2.1, and 13 d, respectively (Wakeham et al., 1983).
Photolytic. Irradiation of ethylbenzene (λ <2537 ?) at low temperatures will form hydrogen, styrene, and free radicals (Calvert and Pitts, 1966).
Chemical/Physical. Complete combustion in air yields carbon dioxide and water vapor. Ethylbenzene will not hydrolyze in water (Kollig, 1993).

신진 대사

The main oxidation of ethyl benzene occurs at the activated α-methylene group to yield methylphenylcarbinol which is also the precursor of hippuric and mandelic acids. Both optical isomers of methylphenylcarbinol are formed, probably in equal amounts, and these have been isolated from the urine of rabbits as the corresponding glucuronides. The two optical forms of mandelic acid have also been found (Williams, 1959).

운송 방법

UN1175 Ethylbenzene, Hazard Class: 3; Labels: 3-Flammable liquid

Toxicity evaluation

Ethylbenzene acts by a variety of toxic mechanisms in affected tissues/organs. Acute CNS depressive or narcotic effects occur nonspecifically and likely result from unmetabolized ethylbenzene’s disruption of neuronal membranes. Ototoxicity also appears to result from unmetabolized ethylbenzene damage to hair cells of the cochlea. Both of these toxicities are relevant to humans. Other ethylbenzene toxicities appear to be linked to metabolism or metabolites, and hence, differences are expected between laboratory animals and humans. Induction of cytochrome P450E1 is postulated to contribute to liver changes in mice and kidney changes in rats. Rat kidney toxicity is demonstrated to be associated with alpha-2u-globulin nephropathy and exacerbation of chronic progressive nephropathy, conditions that are not relevant to human health. Lung toxicity is postulated to arise from mouse specific lung enzyme (cytochrome P450F2) metabolism to cytotoxic metabolite(s) and associated chronic cell proliferation in lung target cells.

비 호환성

Vapors may form explosive mixture with air. Incompatible with oxidizers (chlorates, nitrates, peroxides, permanganates, perchlorates, chlorine, bromine, fluorine, etc.); contact may cause fires or explosions. Keep away from alkaline materials, strong bases, strong acids,oxoacids, and epoxides. Attacks plastics and rubber. May accumulate static electrical charges, and may cause ignition of its vapors.

폐기물 처리

Dissolve or mix the material with a combustible solvent and burn in a chemical incinerator equipped with an afterburner and scrubber. All federal, state, and local environmental regulations must be observed

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