Benzene cas. CAS #: 71-43-2 EC Number: 200-753-7 Molar Mass: 78.

CAS CAS Name Benzene Molecular Formula C 6 H 6 Molecular Mass 78. 1,2-Dichlorobenzene has been detected at unspecified concns in the roots of wheat plants grown from lindane -treated seeds (1). 1989 OSHA PEL: Same as current PEL. Other names: Hexane, 1-phenyl-; Hexylbenzene; 1-Phenylhexane; n-Hexylbenzene Permanent link for this species. Buy GK4809 - Benzene (71-43-2) online from Glentham Life Sciences, a manufacturer and supplier of fine chemicals. Propylbenzene is an alkylbenzene that is benzene having one of its aromatic hydrogens substituted by a propyl group. : 98-56-6; Synonyms: 1-Chloro-4-(trifluoromethyl)benzene; 4-Chloro-alpha,alpha,alpha-trifluorotoluene; Linear ベンゼン （ 英: benzene ）は、 分子式 C 6 H 6 、 分子量 78. in >1 million pounds in 1990 and/or 1994. 2 ppb (7 μg/m 3) in 185 homes without smokers and 3. 9%; CAS Number: 71-43-2; EC Number: 200-753-7; find Sigma-Aldrich-270709 MSDS, related peer-reviewed papers CAS Name 1,4-Bis(5-phenyl-2-oxazolyl)benzene Molecular Formula C 24 H 16 N 2 O 2 Molecular Mass 364. Careers. CAS Future Leaders. NIOSH REL: 0. Catalog Number Cat# M-502-01N. Office of Innovation and Analytics, Toxicology Section. The ‘Substance identity’ section is calculated from substance identification information from all ECHA databases. Melting point: 6°C. (U. CAS, a division of the benzene 100 71-43-2 Ingredient name % CAS number There are no additional ingredients present which, within the current knowledge of the supplier and in the concentrations applicable, are classified as hazardous to health or the environment and hence require reporting in this section. Exposure to benzene and risk of breast cancer among shoe factory workers in Italy. Contact Technical Service. Use this link for bookmarking this species for CAS Registry Number: 71-43-2; Chemical structure: This structure is also available as a 2d Mol file or as a computed 3d SD file The 3d structure may be viewed using Java or Javascript. Subpart F--Flavoring Agents and Related Substances. Isotopologues: Benzene-D6 The effects of exposure to any hazardous substance depend on the dose, the duration, how you are exposed, personal traits and habits, and whether other chemicals are present. Impurity 2. 8%; CAS Number: 108-90-7; EC Number: 203-628-5; find Sigma-Aldrich-284513 MSDS, related peer-reviewed papers, technical documents, similar products Aldrich-A29402; Allylbenzene 0. SDS. This product belongs to category of Re-engineered products, showing key improvements in Green Chemistry Principles “Safer Solvents and Auxiliaries”, “Enhanced Energy Efficiency” and “Inherently Safer Chemistry for Accident Prevention”. CAS Name 1-Bromo-4-(trifluoromethyl)benzene Molecular Formula C 7 H 4 BrF 3 Molecular Mass 225. Other names: [6]Annulene; Benzol; Benzole; Coal naphtha; Cyclohexatriene; Phenyl hydride; Pyrobenzol; Pyrobenzole; Benzolene 1,2,3-trichlorobenzene appears as a white solid with a sharp chlorobenzene odor. 1,2-Dichlorobenzene was identified, not quantified, in plant material grown in an Illinois coal refuse reclamation site (2). Aldrich-C26402; 4-Chlorobenzotrifluoride 0. View catalogue prices, chemical data, technical specifications and SDS documents. CAS Name 1,4-Bis(bromomethyl)benzene Molecular Formula C 8 H 8 Br 2 Molecular Mass 263. anhydrous, septum-sealed bottle. 71-43-2 Known to be a human carcinogen First listed in the First Annual Report on Carcinogens (1980) Carcinogenicity Benzene is known to be a human carcinogen based on sufficient evi-dence of carcinogenicity from studies in humans. Application. Isotopologues: Benzene-D6 Benzene (C6H6, CAS No. 벤젠 ( 영어: benzene) 또는 벤졸 (benzol)은 휘발성 액체 탄화수소 로 콜타르 를 증류, 정제하여 만든다. 3240-34-4; Iodobenzene I,I-diacetate | Iodosobenzene I,I-diacetate; oxidant suitable for C-H activation| Find related products, papers, technical documents, MSDS & more at Sigma-Aldrich Benzene, 1-iodo-3-(trifluoromethyl)-Formula: CAS Registry Number: 401-81-0; Chemical structure: This structure is also available as a 2d Mol file or as a computed IUPAC Standard InChIKey: CKAPSXZOOQJIBF-UHFFFAOYSA-N Copy CAS Registry Number: 118-74-1 Chemical structure: This structure is also available as a 2d Mol file or as a computed 3d SD file Benzene, nitro-Formula: C 6 H 5 NO 2; CAS Registry Number: 98-95-3; Chemical structure: This structure is also available as a 2d Mol file or as a computed 3d SD file Vigorous reactions, sometimes amounting to explosions, can result from the contact between aromatic hydrocarbons, such as N-PROPYL BENZENE, and strong oxidizing agents. Costatini AS, et al. Melting point 63-64 °C (145-147 °F). The substance identifiers displayed in the InfoCard are the best available substance name, EC number, CAS number and/or the molecular and structural formulas. com. 95; CAS No. Some substance identifiers may have IUPAC Standard InChIKey: NPDACUSDTOMAMK-UHFFFAOYSA-N Copy CAS Registry Number: 106-43-4 Chemical structure: This structure is also available as a 2d Mol file; Other names: Toluene, p-chloro-; p-Chlorotoluene; p-Tolyl chloride; 1-Chloro-4-methylbenzene; 4-Chloro-1-methylbenzene; 4-Chlorotoluene; para-Chlorotoluene; 1-Methyl-4-chlorobenzene; 4-Tolyl chloride; 4-Methylphenyl chloride; NSC 404114 Benzene; CAS Number: 71-43-2; Synonyms: Benzene; find Supelco-101782 MSDS, related peer-reviewed papers, technical documents, similar products & more at Sigma-Aldrich We are committed to bringing you Greener Alternative Products, which adhere to one of the four categories of Greener Alternatives. CAS Name Benzene Molecular Formula C 6 H 6 Molecular Mass 78. 1,2,3-trichlorobenzene is a trichlorobenzene carrying chloro substituents at positions 1, 2 and 3. Benzene, bromo-Bromobenzene; Monobromobenzene; Phenyl bromide; NSC 6529; View All. It is primarily used as a key monomer in the production of a high-performance polymer known as polyethylene terephthalate (PET). CAS Common Chemistry. Other names: Benzene, p-diethyl-; p-Diethylbenzene; p-Ethylethylbenzene; 1,4-Diethylbenzene; para-Diethylbenzene Permanent link for this species. 1,2,4-Trimethylbenzene can be used as a reactant to synthesize: 2,3,5-Trimethylbenzoquinone via oxidation reaction with phthaloyl peroxide under solvent-free conditions. Please fill in the enquiry form to contact our customer service, for technical support, or for any requests. Sec. Dri. Molecular Weight: 162. Phone: 1-800-CDC-INFO 888-232-6348 (TTY) Email: Contact CDC-INFO. It is also used to prepare other polymers such as polybutylene terephthalate (PBT), polymer blends, and alloys. 1. Isotopologues: Benzene-D6 Dewar benzene (also spelled dewarbenzene) or bicyclo [2. 1,3,5 Our team of scientists has experience in all areas of research including Life Science, Material Science, Chemical Synthesis, Chromatography, Analytical and many others. 0]hexa-2,5-diene is a bicyclic isomer of benzene with the molecular formula C 6 H 6. S. CAS Number: 3163-76-6. Use this link for bookmarking this species for future Aldrich-P52407; Propylbenzene 0. Cite this Page 1,4-Bis(5-phenyl-2 CAS Registry Number: 71-43-2; Chemical structure: This structure is also available as a 2d Mol file or as a computed 3d SD file The 3d structure may be viewed using Java or Javascript. This public health statement tells you about benzene and the effects of exposure to it. MDL number: Benzene-1,3,5-tricarboxaldehyde is extensively used in the synthesis of a wide range of porous CAS Registry Number: 71-43-2; Chemical structure: This structure is also available as a 2d Mol file or as a computed 3d SD file The 3d structure may be viewed using Java or Javascript. 11 の最も単純な 芳香族炭化水素 である。. 3240-34-4; Iodobenzene I,I-diacetate | Iodosobenzene I,I-diacetate; oxidant suitable for C-H activation| Find related products, papers, technical documents, MSDS & more at Sigma-Aldrich Mar 14, 2024 · Benzene (C6H6, CAS No. CAS #: 71-43-2 EC Number: 200-753-7 Molar Mass: 78. Substitution at the benzene nucleus occurs by halogenation (acid catalyst), nitration, sulfonation, and the CAS Registry Number: 71-43-2; Chemical structure: This structure is also available as a 2d Mol file or as a computed 3d SD file The 3d structure may be viewed using Java or Javascript. Our Story. 21 Plant Concentrations. Deleted or Replaced CAS Registry Numbers. 8-fold molar quantity of chlorine in the presence of ferric chloride at temperatures increasing to 100 °C gives a chlorination mixture consisting of 26% 1,4-dichlorobenzene, 4. Formula: C 6 H 6. IUPAC Standard InChIKey: NPDACUSDTOMAMK-UHFFFAOYSA-N Copy CAS Registry Number: 106-43-4 Chemical structure: This structure is also available as a 2d Mol file; Other names: Toluene, p-chloro-; p-Chlorotoluene; p-Tolyl chloride; 1-Chloro-4-methylbenzene; 4-Chloro-1-methylbenzene; 4-Chlorotoluene; para-Chlorotoluene; 1-Methyl-4-chlorobenzene; 4-Tolyl chloride; 4-Methylphenyl chloride; NSC 404114 Apr 2, 2024 · ANSI Z37. 1 ppm TWA, 1 ppm STEL; NIOSH considers benzene to be a potential occupational carcinogen as defined by the OSHA carcinogen policy [29 CFR 1990]. Ignites in contact with powdered chromic anhydride [Mellor 11:235 1946-47]. CAS Registry Number: 98-95-3; Chemical structure: This structure is also available as a 2d Mol file or as a computed 3d SD file The 3d structure may be viewed using Java or Javascript. Tumori. Chemicals listed as HPV were produced in or imported into the U. Incompatible with oxidizing agents such as nitric acid. 4: kJ/mol: RSC: Holm, 1981: solvent: Diethyl ether; Due to the possibility of side reactions, the enthalpy of reaction was not considered to be sufficiently reliable for deriving the enthalpy of formation of the Grignard reagent Holm, 1981; MS Apr 17, 2003 · Under the proposed revised Carcinogen Risk Assessment Guidelines (U. CAS, a division of the CAS Registry Number: 71-43-2; Chemical structure: This structure is also available as a 2d Mol file or as a computed 3d SD file The 3d structure may be viewed using Java or Javascript. [1] 1,2,4,5-Tetramethylbenzene (durene) by methylation using syngas in the presence of Cu and Zn-based bifunctional catalysts. Isotopologues: [2H9]-1-(Chloromethyl)-4-methylbenzene Quantity Value Units Method Reference Comment; Δ r H°-275. Quickly confirm chemical names, CAS Registry Numbers®, structures or basic physical properties by searching compounds of general interest or leveraging an API connection. H332: Harmful if inhaled. 6개의 탄소 원자가 동일 평면에 있는 평면 정육각형의 고리구조를 가졌으며 가장 기본적인 방향족 탄화수소 물질이고 대표적인 아눌렌 (6-아눌렌)이다. 6 atom % D; CAS Number: 1076-43-3; EC Number: 214-061-8; Synonyms: Hexadeuterobenzene; find Sigma-Aldrich-441325 MSDS Benzene (CAS Registry Number 71-43-2; C6H6; molecular weight 78. : 103-65-1; Synonyms: 1-Phenylpropane; Linear Formula: C6H5CH2CH2CH3; Empirical Formula: C9H12; find related products Benzene anhydrous, 99. 88. 01 Discover more in SciFinder n. Comparison of aneuploidies of chromosomes 21, X, and Y in the blood lymphocytes and sperm of workers exposed to benzene. We will get back to you as soon as possible. ATSDR can also tell you the location of occupational and environmental health clinics. 40 Discover more in SciFinder n. CAS, a division of the CAS Registry Number: 455-13-0; Chemical structure: This structure is also available as a 2d Mol file or as a computed 3d SD file The 3d structure may be viewed using Java or Javascript. 3 ppb (10. Use this link Benzene, (2-bromoethyl)-Formula: CAS Registry Number: 103-63-9; Chemical structure: This structure is also available as a 2d Mol file or as a computed 3d SD file CAS Registry Number: 526-73-8; Chemical structure: This structure is also available as a 2d Mol file or as a computed 3d SD file The 3d structure may be viewed using Java or Javascript. Advanced search Similarity search. All mass spectra in this site (plus many more) are available from the NIST/EPA/NIH Mass Spectral Library. 11 Discover more in SciFinder n. 96 Discover more in SciFinder n. View Products on Sigmaaldrich. [2] Toluene ( / ˈtɒl. Cite this Page 1-Bromo-4 CAS Registry Number: 71-43-2. H ) CAS 71-43-2; UN 1114 . 8 mg/l (2). It is also a common atmospheric contaminant and is present in motor vehicle exhaust emissions and cigarette smoke. Isotopologues: Ethylbenzene-d10 Aldrich - 178721; (Diacetoxyiodo)benzene 98%; CAS No. 4770 Buford Highway. Attacks plastics and rubber. Terephthalic acid belongs to the class of monomers known as aromatic dicarboxylic acids. 17034 Classification 17034 Class. Benzene suitable for HPLC, ≥99. Boiling point: 80°C. By using CAS Common Chemistry, you agree to the terms and conditions of this license. 2. Benzene (C6H6, CAS No. 5 μg/m 3) in 343 homes with one or more smokers. Relative density (water = 1): 0. 1 g/mol) is an aromatic compound with a single six-member unsaturated carbon ring. Number of Components Comps. 9 to 75 μg in mainstream smoke and from 345 to 653 μg in sidestream smoke. Explosions have been reported [NFPA 491M 1991]. Our team of scientists has experience in all areas of research including Life Science, Material Science, Chemical Synthesis, Chromatography, Analytical and many others. . Please see the following for information about the library and its accompanying search program. 18. The extent of in vivo enzymatic activation of brominated compounds was higher than that of chlorinated chemicals. FDA Regulation: FDA PART 172 -- FOOD ADDITIVES PERMITTED FOR DIRECT ADDITION TO FOOD FOR HUMAN CONSUMPTION. CAS# 71-43-2. Reacts violently with oxidants, nitric acid, sulfuric acid and halogens. 0%, ACS reagent; CAS Number: 71-43-2; EC Number: 200-753-7; find Sigma-Aldrich-319953 MSDS, related peer-reviewed papers, technical documents, similar products & more at Sigma-Aldrich 工業用途. : 104-83-6; Synonyms: alpha,4-Dichlorotoluene; (4-Chlorophenyl)methyl chloride; 1-Chloro-4-(chloromethyl)benzene Single doses of 1,2,4-trimethylbenzene (124TMB) or 14C-124TMB were administered orally to rats for metabolism and distribution studies. 2692599-16-7. Cite this Page 1,4-Bis(bromomethyl)benzene. 92709-16-5. LOTUS - the natural products occurrence database. FDA PART 175 -- INDIRECT FOOD ADDITIVES: ADHESIVES AND COMPONENTS OF COATINGS. This generates fire and explosion hazard. 分野によっては慣用として ドイツ語 (Benzol:ベンツォール) 風に ベンゾール と呼ぶ Benzene. 原油 に含まれており、 石油化学 における基礎的 化合物 の1つである。. Insoluble in water and denser than water. 98; CAS No. • Persons exposed only to benzene vapor do not pose substantial risks of secondary contamination to others. Benzene, C10-13-alkyl derivs. CAMEO Chemicals. Solv®. juiːn / ), also known as toluol ( / ˈtɒl. Benzene, 1,3-dimethyl-Formula: C 8 H 10; CAS Registry Number: 108-38-3; Chemical structure: This structure is also available as a 2d Mol file or as a computed 3d The Henry's Law constant for 1,4-diethylbenzene is estimated as 7. 560 Modified hop extract. Molecular mass: 78. Benzene, 4-bromo-1,2-dimethoxy-Formula: C 8 H 9 BrO 2; CAS Registry Number: 2859-78-1; Chemical structure: This structure is also available as a 2d Mol file or as Aldrich - 178721; (Diacetoxyiodo)benzene 98%; CAS No. 7 ± 4. 무색이고 Benzene ≥99. Aldrich-111961; 4-Chlorobenzyl chloride 0. ju. Persons whose clothing or skin is contaminated with liquid (1-Bromoethyl)benzene has been employed: in controlled radical polymerization of styrene; in asymmetric esterification of benzoic acid in the presence of a chiral cyclic guanidine; as initiator in the synthesis of bromine terminated polyp-methoxystyrene and polystyrene via atom transfer radical polymerization General description. The health effects that may result from eating foods or drinking liquids containing lower levels of benzene are not known. Chamblee, GA 30341-3717. Solubility in water, g/100ml at 25°C: 0. BENZENE reacts vigorously with allyl chloride or other alkyl halides even at -70°C in the presence of ethyl aluminum dichloride or ethyl aluminum sesquichloride. 8%; CAS Number: 71-43-2; EC Number: 200-753-7; find Sigma-Aldrich-401765 MSDS, related peer-reviewed papers, technical documents, similar products & more at Sigma-Aldrich Benzene Benzene (C 6 6 . EPA, 1979, 1985, 1998; ATSDR, 1997). : 300-57-2; Synonyms: 3-Phenyl-1-propene; Linear Formula: C6H5CH2CH=CH2; Empirical Formula: C9H10; find related products 12. It is a colorless, water -insoluble liquid with the odor associated with paint thinners. Benzene, 1-chloro-4-(chloromethyl)-Formula: CAS Registry Number: 104-83-6; Chemical structure: This structure is also available as a 2d Mol file or as a computed May 8, 2011 · CAS Registry Number: 1077-16-3; Chemical structure: This structure is also available as a 2d Mol file or as a computed 3d SD file The 3d structure may be viewed using Java or Javascript. It is a clear, colourless, volatile, highly flammable liquid with a characteristic odour and a density of 874 kg/m3 at 25 °C (1). Chemical name :benzene Other means of identification May 7, 2010 · CAS Registry Number: 105-05-5; Chemical structure: This structure is also available as a 2d Mol file or as a computed 3d SD file The 3d structure may be viewed using Java or Javascript. CAS Registry Number: 100-41-4; Chemical structure: This structure is also available as a 2d Mol file or as a computed 3d SD file The 3d structure may be viewed using Java or Javascript. H373: May cause damage to organs through prolonged or repeated exposure. Reference substance name: Toluene EC Number: 203-625-9 EC Name: Toluene CAS Lindane can be prepared from benzene and chlorine by photochlorination. Amounts of benzene measured per cigarette ranged from 5. They can react exothermically with bases and with diazo compounds. Chemical Properties of Benzene (CAS 71-43-2) CAS 71-43-2 Other Names. Certified Reference Material. 14. 11 g/mol Chemical Formula: C₆H₆. Benzene CAS No. ChEBI. ɒl, - ɔːl, - oʊl / ), is a substituted aromatic hydrocarbon [15] with the chemical formula C6H5CH3, often abbreviated as PhCH3, where Ph stands for phenyl group. Benzene-d6 99. CoA. 03 mm Hg (1), and water solubility, 24. The resulting benzene hexachloride consists of isomers of which only the gamma-isomer (lindane) is desired, and is obtained by treatment of the reaction mixture with methanol or acetic acid, in which only the alpha and beta isomers dissolve readily. 14C-124TMB was rapidly and widely distributed throughout the body with the highest levels in adipose tissue. Cite this Page Benzene. Aldrich-I7632; Iodobenzene 0. Chlorobenzene anhydrous, 99. Cite this Page (Trifluoromethyl)benzene. Isotopologues: Benzene-D6. 5% 1,2-dichlorobenzene, 48% 1,2,4-trichlorobenzene, 8% 1,2,3-trichlorobenzene, 8% 1,2,3,4-tetrachlorobenzene, 5. The HPV list is based on the 1990 Inventory Update Rule. CAS Innovation Incubator. Benzene MSDS (material safety data sheet) or SDS, CoA and CoQ, dossiers, brochures and other available documents. Isotopologues: Benzene-D6 Our team of scientists has experience in all areas of research including Life Science, Material Science, Chemical Synthesis, Chromatography, Analytical and many others. Quickly confirm chemical names, CAS Registry Numbers®, structures or basic physical properties by searching compounds of The binding of epichlorohydrin, 1,2-dichloroethane, 1,2-dibromoethane, chlorobenzene, bromobenzene, and benzene to nucleic acid and proteins of different murine organs was studied in in vivo and in vitro systems. Isotopologues: Benzene-D6 Hexachlorobenzene is a member of the class of chlorobenzenes that is benzene in which all of the hydrogens are replaced by chlorines. Hence sinks in water. This estimated Henry's Law constant indicates that 1,4-diethylbenzene is expected to volatilize rapidly from water surfaces (3). Benzene CAS Number: 71-43-2 Molecular formula: C6H6 IUPAC Name: benzene. Other names: p-Iodobenzotrifluoride; α,α,α-trifluoro-4-iodotoluene Permanent link for this species. Press Releases. Chemical structure: This structure is also available as a 2d Mol file or as a computed 3d SD file The 3d structure may be viewed using Java or Javascript . 3X10-3 atm-cu m/mole (SRC) from its vapor pressure, 1. IUPAC Standard InChIKey: RWGFKTVRMDUZSP-UHFFFAOYSA-N Copy CAS Registry Number: 98-82-8 Chemical structure: This structure is also available as a 2d Mol file or as a computed 3d SD file Ethylbenzene reference substance for gas chromatography. The batch reaction of benzene with a 2. 5% 1,2,4,5 CAS Registry Number: 104-82-5; Chemical structure: This structure is also available as a 2d Mol file or as a computed 3d SD file The 3d structure may be viewed using Java or Javascript. [1] However, he did not propose it as the structure of benzene, and in fact he For more information, contact: Agency for Toxic Substances and Disease Registry. Cancer Studies in Humans Case reports and case series have reported leukemia (mostly acute Eating foods or drinking liquids containing high levels of benzene can cause vomiting, irritation of the stomach, dizziness, sleepiness, convulsions, rapid heart rate, coma, and death. H225: Highly flammable liquid and vapour. CAS Name (Trifluoromethyl)benzene Molecular Formula C 7 H 5 F 3 Molecular Mass 146. Hazardous Substances Data Bank (HSDB) Benzenethiol is listed as a High Production Volume (HPV) chemical (65FR81686). 0 license. 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. Immediately Dangerous to Life or Health Concentrations (IDLH) CAS number: 71-43-2. 4, Acceptable Concentrations of Benzene. Isotopologues: Nitrobenzene-D5 Technical Service. Synonyms include benzol, coal tar naphtha, phenyl hydride, and cyclohexatriene. An agricultural fungicide introduced in the mid-1940s and formerly used as a seed treatment, its use has been banned since 1984 under the Stockholm Convention on Persistent Organic Pollutants. This may be a synopsis of the full weight-of Use of the information, documents and data from the ECHA website is subject to the terms and conditions of this Legal Notice, and subject to other binding limitations provided for under applicable law, the information, documents and data made available on the ECHA website may be reproduced, distributed and/or used, totally or in part, for non-commercial purposes provided that ECHA is Dec 21, 2021 · In a study of benzene levels in homes, the median level was 2. Chemical and physical properties of Benzene. 172. Propylbenzene is a natural product found in Gossypium hirsutum, Picea abies, and other organisms with data available. 98; CAS Number: 591-50-4; Linear Formula: C6H5I; find related products, papers, technical documents, MSDS & more at Sigma Benzene, 1-chloro-2-nitro-Formula: C 6 H 4 ClNO 2; CAS Registry Number: 88-73-3; Chemical structure: This structure is also available as a 2d Mol file or as a anhydrous, septum-sealed bottle Dri Solv®. 95(1):8-12, January-February 2009. CAS Common Chemistry is provided under the Creative Commons CC BY-NC 4. The compound is named after James Dewar who included this structure in a list of possible C 6 H 6 structures in 1869. EPA, 1996), benzene is characterized as a known human carcinogen for all routes of exposure based upon convincing human evidence as well as supporting evidence from animal studies. 1. Other names: Hemimellitene; 1,2,3-Trimethylbenzene; Hemellitol; 1,2,3-TrimethyIbenzene; 1,2,3-trimethylbenzene (hemimellitene) Permanent link for this species FDA Mainterm (SATF): 71-43-2 ; BENZENE. For more information, call the ATSDR Information Center at 1-800-232-4636. H304: May be fatal if swallowed and enters airways. CAS 100-41-4, EC Number 202-849-4, chemical formula C₆H₅C₂H₅. Ji Z, et al. Current OSHA PEL: 1 ppm TWA, 5 ppm STEL. yx xp vc lh kl sa uj md xv li