벤젠

벤젠
벤젠 구조식 이미지
카스 번호:
71-43-2
한글명:
벤젠
동의어(한글):
벤젠;벤졸렌;석탄나프타;시클로헥사트리엔;아눌렌;콜타르나프타;탄소오일;페닐수화;펜;피로벤졸;벤졸;싸이클로헥사트라이엔;페닐 하이드리드
상품명:
Benzene
동의어(영문):
Benzen;BENZOL;Benzene, OMniSolv(R);Annulene;Pure benzene;PHENE;Benzeen;anhydrous benzene;Benzol,HPLC Grade;Benzene, PestiSolv(R)
CBNumber:
CB6854153
분자식:
C6H6
포뮬러 무게:
78.11
MOL 파일:
71-43-2.mol
MSDS 파일:
SDS

벤젠 속성

녹는점
5.5 °C (lit.)
끓는 점
80 °C (lit.)
밀도
0.874 g/mL at 25 °C (lit.)
증기 밀도
2.77 (vs air)
증기압
166 mm Hg ( 37.7 °C)
굴절률
n20/D 1.501(lit.)
인화점
12 °F
저장 조건
room temp
용해도
알코올, 클로로포름, 디클로로메탄, 디에틸 에테르, 아세톤 및 아세트산과 섞입니다.
산도 계수 (pKa)
43(at 25℃)
물리적 상태
액체
색상
APHA: ≤10
냄새
12ppm에서 페인트 희석제 냄새 감지 가능
상대극성
0.111
폭발한계
1.4-8.0%(V)
Odor Threshold
2.7ppm
수용성
0.18g/100mL
최대 파장(λmax)
λ: 280 nm Amax: 1.0
λ: 290 nm Amax: 0.15
λ: 300 nm Amax: 0.06
λ: 330 nm Amax: 0.02
λ: 350-400 nm Amax: 0.01
Merck
14,1066
BRN
969212
Henry's Law Constant
10.4 at 45.00 °C, 11.4 at 50.00 °C, 13.3 at 55.00 °C, 14.5 at 60.00 °C, 16.8 at 65.00 °C, 19.2 at 70.00 °C (static headspace-GC, Park et al., 2004)
노출 한도
TLV-TWA 10 ppm (~32 mg/m3) (ACGIH and OSHA); ceiling 25 ppm (~80 mg/m3) (OSHA and MSHA); peak 50 ppm (~160 mg/m3)/10 min/8 h (OSHA); carcinogenicity: Suspected Human Carcinogen (ACGIH), Human Sufficient Evidence (IARC).
Dielectric constant
2.3(20℃)
안정성
안정적인. 피해야 할 물질로는 강산화제, 황산, 질산, 할로겐 등이 있습니다. 가연성이 높습니다.
InChIKey
UHOVQNZJYSORNB-UHFFFAOYSA-N
LogP
2.130
CAS 데이터베이스
71-43-2(CAS DataBase Reference)
IARC
1 (Vol. 29, Sup 7. 100F, 120) 2018
NIST
Benzene(71-43-2)
EPA
Benzene (71-43-2)
안전
  • 위험 및 안전 성명
  • 위험 및 사전주의 사항 (GHS)
위험품 표기 F,T
위험 카페고리 넘버 45-46-11-36/38-48/23/24/25-65-39/23/24/25-23/24/25
안전지침서 53-45-36/37-16-7
유엔번호(UN No.) UN 1114 3/PG 2
WGK 독일 3
RTECS 번호 CY1400000
F 고인화성물질 3-10
자연 발화 온도 560 °C
TSCA Yes
HS 번호 2902 20 00
위험 등급 3
포장분류 II
유해 물질 데이터 71-43-2(Hazardous Substances Data)
독성 LD50 orally in young adult rats: 3.8 ml/kg (Kimura)
IDLA 500 ppm
기존화학 물질 KE-02150
유해화학물질 필터링 97-1-99
중점관리물질 필터링 별표1-11
사고대비 물질 필터링 5
함량 및 규제정보 물질구분: 유독물질; 혼합물(제품)함량정보: 벤젠 및 이를 85% 이상 함유한 혼합물
그림문자(GHS): GHS hazard pictogramsGHS hazard pictogramsGHS hazard pictograms
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 GHS hazard pictograms P210,P233, P240, P241, P242, P243,P280, P303+ P361+P353, P370+P378,P403+P235, P501
H304 삼켜서 기도로 유입되면 치명적일 수 있음 흡인 유해성물질 구분 1 위험 GHS hazard pictograms
H315 피부에 자극을 일으킴 피부부식성 또는 자극성물질 구분 2 경고 GHS hazard pictograms P264, P280, P302+P352, P321,P332+P313, P362
H319 눈에 심한 자극을 일으킴 심한 눈 손상 또는 자극성 물질 구분 2A 경고 GHS hazard pictograms P264, P280, P305+P351+P338,P337+P313P
H340 유전적인 결함을 일으킬 수 있음 (노출되어도 생식세포 유전독성을 일으키지 않는다는 결정적인 증거가 있는 노출경로가 있다면 노출경로 기재) 생식세포 변이원성 물질 구분 1A, 1B 위험 GHS hazard pictograms
H350 암을 일으킬 수 있음 (노출되어도 암을 일으키지 않는다는 결정적인 증거가 있는 노출경로가 있다면 노출경로 기재) 발암성 물질 구분 1A, 1B 위험 GHS hazard pictograms
H372 장기간 또는 반복 노출되면 장기(또는, 영향을 받은 알려진 모든 장기를 명시)에 손상을 일으킴 특정 표적장기 독성 - 반복 노출 구분 1 위험 GHS hazard pictograms P260, P264, P270, P314, P501
H412 장기적 영향에 의해 수생생물에 유해함 수생 환경유해성 물질 - 만성 구분 3 P273, P501
예방조치문구:
P210 열·스파크·화염·고열로부터 멀리하시오 - 금연 하시오.
P273 환경으로 배출하지 마시오.
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.
P331 토하게 하지 마시오.
NFPA 704
3
2 0

벤젠 C화학적 특성, 용도, 생산

존재

석탄 건류 때 생성되는 가스 및 타르 속에 또 석유 증류분의 분해 생성유 및 개질유 속에 존재한다. 석유 원유 속에도 미량의 존재가 알려져 있다.

용도

1) 각종 화학 제품의 기초 물질이며 페놀, 시클로헥산, 아닐린, 스티렌, 니트로벤젠, 말레산 무수물, 클로로벤젠, BHC의 합성 원료이며, 그것에서 다시 합성 수지, 합성 섬유, 가소제, 염료, 합성 세제, 합성 고무, 살충제, 폭약, 의약품 등이 유도된다. 이외에 용제, 모터 벤졸, 연료, 알코올 변성용 등으로서도 중요하다. 2) 분석용 시약으로서 이용된다.

물성

알릴 브로마이드 (3- 브로 모 프로 펜)는 유기 할로겐화물입니다. 알릴 브로마이드는 중합체, 의약품, 알릴 및 기타 유기 화합물의 합성에 사용되는 알킬화제입니다. 물리적으로, 브롬화 알릴은 강렬하고 산뜻하고 지속적인 냄새가 나는 투명한 액체입니다. 또한,이 화합물을 아연 원소로 처리함으로써 알릴 브로마이드를 제조 할 수있다. 무색의 액체. 융점 -119.4 ℃, 비등점 71 ℃, 상대 밀도 1.398 (20/4 ℃), 굴절률 1.465 (25 ℃), 인화점 -2 ℃. 물에 불용이며, 알코올, 에테르, 사염화탄소, 클로로포름에 용해한다. 불쾌한 자극성 냄새가 나. 합성 염료, 향신료와 같은 유기 합성 용; 시카 보빌 (cicabovir)의 제조를위한 제약 산업; 토양 훈증제로서의 농업. 유기 합성, 제약 합성 중간체, 합성 sikabuthate, 염료, 향신료로 사용할 수 있습니다; 토양 훈증을위한 농업.

개요

Benzene is a colorless, volatile, highly flammable liquid that is used extensively in the chemical industry and received wide interest in the early days of organic chemistry.
Benzene
Because of its structure, benzene is a very stable organic compound. It does not readily undergo addition reactions. Addition reactions involving benzene require high temperature, pressure, and special catalysts. The most common reactions involving benzene involve substitution reactions. Numerous atoms and groups of atoms may replace a hydrogen atom or several hydrogen atoms in benzene. Th ree important types of substitution reactions involving benzene are alkylation, halogenation, and nitration. In alkylation, an alkyl group or groups substitute for hydrogen(s).

화학적 성질

Benzene is a clear, volatile, colorless, highly flammable liquid with a pleasant, characteristic odor. It is an aromatic hydrocarbon that boils at 80.1 DC. Benzene is used as a solvent in many areas of industries, such as rubber and shoe manufacturing, and in the production of other important substances, such as styrene, phenol, and cyclohexane. It is essential in the manufacture of detergents, pesticides, solvents, and paint removers. It is present in fuels such as gasoline up to the level of 5%.

용도

수소화 알루미늄리튬은 LAH 또는 Lithium Aluminium Hydride라고 불리는 환원제이다. 주로 유기화학에서 자주 쓰이며, 에스터를 일차 알코올로 환원시키거나 케톤을 이차 알코올로 환원시키는데 사용된다. 유기합성에서 사용되는 환원제로서 가열이나 수분에 의하여 격렬한 분해반응을 일으킨다.

물리적 성질

Clear, colorless to light yellow watery liquid with an aromatic, musty, phenolics or gasoline-like odor. At 40 °C, an odor threshold concentration of 190 μg/L in air was determined by Young et al. (1996). An odor threshold of 4.68 ppmv was determined by Leonardos et al. (1969). A detection odor threshold concentration of 108 mg/m3 (34 ppmv) was reported by Punter (1983). The average least detectable odor threshold concentrations in water at 60 °C and in air at 40 °C were 0.072 and 0.5 mg/L, respectively (Alexander et al., 1982).

출처

Detectable levels of benzene have been found in a number of soft drinks that contain either a sodium or potassium benzoate preservative and ascorbic acid, and 'diet' type products containing no added sugar are reported to be particularly likely to contain benzene at detectable levels. Surveys carried out in the USA, the UK and Canada have all confirmed that a small proportion of these products may contain low levels of benzene. For example, in a survey of 86 samples analysed by the FDA between April 2006 and March 2007, only five products were found to contain benzene at concentrations above 5 ug kg-1. The levels found were in a range from approximately 10–90 ug kg-1. A survey of 150 UK-produced soft drinks by the Food Standards Agency (FSA) published in 2006 showed that four products contained benzene at levels above 10 ug kg-1, and the highest level recorded was 28 ug kg-1. However, it has been reported that higher levels may develop in these products during prolonged storage, especially if they are exposed to daylight.
Benzene may also be formed in some mango and cranberry drinks in the absence of added preservatives, because these fruits contain natural benzoates.

역사

Benzene was discovered in 1825 by Michael Faraday (1791–1867), who identified it in a liquid residue from heated whale oil. Faraday called the compound bicarburet of hydrogen, and its name was later changed to benzin by Eilhardt Mitscherlich (1794–1863), who isolated the compound from benzoin (C14H12O2).

용도

Manufacturing of ethylbenzene (for styrene monomer), dodecylbenzene (for detergents), cyclo- hexane (for nylon), phenol, nitrobenzene (for ani- line), maleic anhydride, chlorobenzene, diphenyl, benzene hexachloride, benzene-sulfonic acid, and as a solvent.

정의

ChEBI: Benzene is a six-carbon aromatic annulene in which each carbon atom donates one of its two 2p electrons into a delocalised pi system. A toxic, flammable liquid byproduct of coal distillation, it is used as an industrial solvent. Benzene is a carcinogen that also damages bone marrow and the central nervous system.

생산 방법

Today benzene, which is a natural component of petroleum, is obtained from petroleum by several processes. Toluene hydrodealkylation involves mixing toluene (C6H5CH3) and hydrogen in the presence of catalysts and temperatures of approximately 500°C and pressures of about 50 atmospheres to produce benzene and methane: C6H5CH3 + H2 → C6H6 + CH4. Hydrodealkylation strips the methyl group from toluene to produce benzene. Toluene disproportionation involves combining toluene so that the methyl groups bond to one aromatic ring, producing benzene and xylene. Benzene can also be obtained from petroleum reforming in which temperature, pressure, and catalysts are used to convert petroleum components to benzene, which can then be extracted using solvents and distillation processes. Another source of benzene is pyrolysis gasoline or pygas.

화학 반응

Benzene reacts (1) with chlorine, to form (a) substitution products (one-half of the chlorine forms hydrogen chloride) such as chlorobenzene, C6H5Cl; dichlorobenzene, C6H4Cl2(1,4) and (1,2); trichlorobenzene, C6H3Cl3(1,2,4); tetrachlorobenzene (1,2,3,5); and (b) addition products, such as benzene dichloride C6H6Cl2; benzene tetrachloride, C6H6Cl4; and benzene hexachloride, C6H6Cl6. The formation of substitution products of the benzene nucleus, whether in benzene or its homologues, is favored by the presence of a catalyzer, e.g., iodine, phosphorus, iron; (2) with concentrated HNO3, to form nitrobenzene, C6H5NO2; 1,3- dinitrobenzene, C6H4(NO2)2 (1,3), 1,3,5-trinitrobenzene, C6H3(NO2)3 (1,3,5); (3) with concentrated H2SO4, to form benzene sulfonic acid, C6H5SO3H, benzene disulfonic acid, C6H4(SO3H)2(1,3), benzene trisulfonic acid, C6H3(SO3H)3 (1,3–5); (4) with methyl chloride plus anhydrous aluminum chloride (Friedel-Crafts reaction) to form toluene, monomethyl benzene, C6H5CH3; dimethyl benzene C6H4(CH3)2; trimethyl benzene, C6H3(CH3)3; (5) with acetyl chloride plus anhydrous aluminum chloride (Friedel-Crafts reaction) to form acetophenone (methylphenyl ketone), C6H5COCH3.

일반 설명

Benzene appears as a clear colorless liquid with a petroleum-like odor. Flash point less than 0 °F. Less dense than water and slightly soluble in water. Hence floats on water. Vapors are heavier than air.

공기와 물의 반응

Highly flammable. Slightly soluble in water.

반응 프로필

Benzene reacts vigorously with allyl chloride or other alkyl halides even at minus 70°C in the presence of ethyl aluminum dichloride or ethyl aluminum sesquichloride. Explosions have been reported [NFPA 491M 1991]. Ignites in contact with powdered chromic anhydride [Mellor 11:235 1946-47]. Incompatible with oxidizing agents such as nitric acid. Mixtures with bromine trifluoride, bromine pentafluoride, iodine pentafluoride, iodine heptafluoride and other interhalogens can ignite upon heating [Bretherick 5th ed. 1995]. Benzene and cyanogen halides yield HCl as a byproduct (Hagedorn, F. H. Gelbke, and Federal Republic of Germany. 2002. Nitriles. In Ullman Encyclopedia of Industrial Chemistry. Wiley-VCH Verlag GmbH & Co. KGaA.). The reaction of Benzene and trichloroacetonitrile evolves toxic chloroform and HCl gasses. (Hagedorn, F., H.-P. Gelbke, and Federal Republic of Germany. 2002. Nitriles. In Ullman Encyclopedia of Industrial Chemistry. Wiley-VCH Verlag GmbH & Co. KGaA.).

위험도

The acute toxicity of benzene is low. Inhalation of benzene can cause dizziness, euphoria, giddiness, headache, nausea, drowsiness, and weakness. Benzene can cause moderate irritation to skin and severe irritation to eyes and mucous membranes. Benzene readily penetrates the skin to cause the same toxic effects as inhalation or ingestion. The chronic toxicity of benzene is significant. Exposure to benzene affects the blood and blood-forming organs such as the bone marrow, causing irreversible injury; blood disorders including anemia and leukemia may result. The symptoms of chronic benzene exposure may include fatigue, nervousness, irritability, blurred vision, and labored breathing. Benzene is regulated by OSHA as a carcinogen (Standard 1910.1028) and is listed in IARC Group 1 ("carcinogenic to humans"). This substance is classified as a "select carcinogen" under the criteria of the OSHA Laboratory Standard.

인화성 및 폭발성

Benzene is a highly flammable liquid (NFPA rating = 3), and its vapors may travel a considerable distance to a source of ignition and "flash back." Vapor-air mixtures are explosive above the flash point. Carbon dioxide and dry chemical extinguishers should be used to fight benzene fires.

화학 반응

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

공업 용도

Benzene (C6H6, CAS No. 71-43-2) is an aromatic hydrocarbon compound used extensively in the chemical industry as an intermediate in the manufacture of polymers and other products. It is also a common atmospheric contaminant and is present in motor vehicle exhaust emissions and cigarette smoke.
In 1990, it was discovered by the USA soft drinks industry that benzene could be produced at low levels in certain soft drinks containing a benzoate preservative and ascorbic acid. Since benzene is a known human carcinogen, its presence in food and beverages is clearly undesirable.

Safety Profile

Confirmed human carcinogen producing myeloid leukemia, Hodgkin's dsease, and lymphomas by inhalation. Experimental carcinogenic, neoplastigenic, and tumorigenic data. A human poison by inhalation. An experimental poison by skin contact, intraperitoneal, intravenous, and possibly other routes. Moderately toxic by ingestion and subcutaneous routes. A severe eye and moderate sktn irritant. Human systemic effects by inhalation and ingestion: blood changes, increased body temperature. Experimental teratogenic and reproductive effects. Human mutation data reported. A narcotic. In industry, inhalation is the primary route of chronic benzene poisoning. Poisoning by skin contact has been reported. Recent (1 987) research indicates that effects are seen at less than 1 ppm. Exposures needed to be reduced to 0.1 ppm before no toxic effects were observed. Elimination is chiefly through the lungs.

잠재적 노출

Benzene is used as a constituent in motor fuels; as a solvent for fats; inks, oils, paints, plastics, and rubber, in the extraction of oils from seeds and nuts; in photogravure printing. It is also used as a chemical intermediate. By alkylation, chlorination, nitration, and sulfonation, chemicals, such as styrene, phenols, and malefic anhydride are produced. Benzene is also used in the manufacture of detergents, explosives, pharmaceuticals; in the manufacture of cyclohexane and ethylbenzene; and dye-stuffs. Increased concern for benzene as a significant environmental pollutant arises from public exposure to the presence of benzene in gasoline and the increased content in gasoline due to requirements for unleaded fuels for automobiles equipped with catalytic exhaust converters.

Carcinogenicity

Benzene is known to be a human carcinogen based on sufficient evidence of carcinogenicity from studies in humans.

환경귀착

Benzene is released to air primarily by vaporization and combustion emissions associated with its use in gasoline. Other sources are vapors from its production and use in manufacturing other chemicals. In addition, benzene may be in industrial effluents discharged into water and accidental releases from gas and oil production, refining and distribution industries. Benzene released to soil will either evaporate very quickly or leach to groundwater. It can be biodegraded by soil and groundwater microbes. Benzene released to surface water should mostly evaporate within a few hours to a few days, depending on quantity, temperature, water turbulence, etc. Although benzene does not degrade by hydrolysis, it may be biodegraded by microbes.

저장

work with benzene should be conducted in a fume hood to prevent exposure by inhalation, and splash goggles and impermeable gloves should be worn at all times to prevent eye and skin contact. Benzene should be used only in areas free of ignition sources.

운송 방법

UN1114 Benzene, Hazard Class: 3; Labels: 3— Flammable liquid

비 호환성

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, epoxides, many fluorides and perchlorates, nitric acid.

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. Dilution with alcohol or acetone to minimize smoke is recommended. Bacterial degradation is also possible.

법규

Current USA and EU legislation does not set maximum limits for benzene in soft drinks. However, the FDA has adopted the Environmental Protection Agency (EPA) maximum contaminant level (MCL) for drinking water of 5 ppb as a quality standard for bottled water. ThisMCL has been used to evaluate the significance of benzene contamination in the soft drinks tested in surveys. The FSA has used the World Health Organization (WHO) guideline level for benzene in water of 10 mg kg-1 as a point of reference for its own survey results.

벤젠 준비 용품 및 원자재

원자재

준비 용품


벤젠 공급 업체

글로벌( 685)공급 업체
공급자 전화 이메일 국가 제품 수 이점
ARCTIC EXPORTS INC
+1-3026880818 +1-3026880818
ARCTICEXPORTSINC@GMAIL.COM Canada 67 58
Henan Fengda Chemical Co., Ltd
+86-371-86557731 +86-13613820652
info@fdachem.com China 7332 58
Henan Tianfu Chemical Co.,Ltd.
+86-0371-55170693 +86-19937530512
info@tianfuchem.com China 21695 55
ATK CHEMICAL COMPANY LIMITED
+undefined-21-51877795
ivan@atkchemical.com China 32480 60
Shanxi Naipu Import and Export Co.,Ltd
+86-13734021967 +8613734021967
kaia@neputrading.com China 1011 58
career henan chemical co
+86-0371-86658258
sales@coreychem.com China 29914 58
NINGBO INNO PHARMCHEM CO., LTD.
13867897135
sales@nbinno.com CHINA 925 58
Wuhan Boyuan Import & Export Co., LTD
+8615175982296
Mike@whby-chem.com China 974 58
Hubei Jusheng Technology Co.,Ltd.
18871490254
linda@hubeijusheng.com CHINA 28180 58
Hubei xin bonus chemical co. LTD
86-13657291602
linda@hubeijusheng.com CHINA 22968 58

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