Para xylene carcinogenic. May be toxic by ingestion.

Para xylene carcinogenic. From: Basic Environmental The Physical Property fields include properties such as vapor pressure and boiling point, as well as explosive limits and toxic exposure thresholds The information in CAMEO Chemicals comes from a variety of data sources. Acute (short-term) inhalation exposure to mixed xylenes in humans results in irritation of Jan 2, 2017 · For m-xylene and p-xylene, the respective 48-hour LC50 values are 19. Hazard Summary Commercial or mixed xylene usually contains about 40-65% m-xylene and up to 20% each of o-xylene and p-xylene and ethylbenzene. Dermal absorption of liquid xylene has been shown to occur at a rate of 2 μg/cm 2 /min, or approximately 12% of vapor xylene, which is absorbed by the lungs (Agency for Toxic Substances and Disease Registry, 2007, Engstrom, et al. In the atmosphere, the product is degraded quickly by photo-oxidation. Toluene and xylene are strong compounds that are used in many household and industrial products. Uses advised against: none Company Identification Company: Chemicalbook Address: Building 1 In this report, the terms xylene, xylenes, and total xylenes will be used interchangeably. Toxicological profile for Xylenes. It is a carcinogenic compound that can be considered as volatile organic and toxic. 44-8. Atlanta, GA: U. BTEX chemicals—the colloquial shorthand for benzene, toluene, ethylbenzene, and the three configurations of xylene—are aromatic hydrocarbons used by the tens of millions of tons worldwide. Where possible, the effects of individual isomers will be identified and presented separately. S. Para-xylene is defined as an intermediate in the production of terephthalic acid and dimethylterephthalate, which are precursors for polyethylene terephthalate (PET) polyester. Saillenfait A. CFR is the Code of Federal Regulations, which are the regulations of the United States government. Hence floats on water. 84 billion lbs in 1993. ] Sep 27, 2025 · Product identifier Product name: P-XYLENE CBnumber: CB2136488 CAS: 106-42-3 EINECS Number: 203-396-5 Synonyms: p-xylene,PARA-XYLENE Relevant identified uses of the substance or mixture and uses advised against Relevant identified uses: For R&D use only. Vapors heavier than air and may be narcotic in high Section 15: Other Regulatory Information Federal and State Regulations: Pennsylvania RTK: p-Xylene Florida: p-Xylene Massachusetts RTK: p-Xylene New Jersey: p-Xylene TSCA 8(b) inventory: p-Xylene SARA 313 toxic chemical notification and release reporting: p-Xylene CERCLA: Hazardous substances. Apr 23, 2025 · The Report on Carcinogens is a congressionally mandated, science-based public health document that NTP prepares for the U. Xylene is primarily a synthetic chemical; however, it can occur naturally in petroleum, coal tar, and during forest fires. Acute (short-term) inhalation exposure to mixed xylenes in humans results in irritation of What is xylene? There are three forms of xylene in which the methyl groups vary on the benzene ring: -xylene, -xylene, and meta ortho -xylene ( -, -, and -xylene). IARC Monographs. Reference Agency for Toxic Substances and Disease Registry (ATSDR). attached methyl groups. The XYLENE Xylene (dimethylbenzene) is a commonly used aromatic solvent with three isomeric forms: ortho, meta-, and para -xylene. By Shawn M. Xylene, [mixed isomers] appears as a clear colorless liquid with a characteristic aromatic odor consisting of a mixture of the three isomers (ortho-, meta- and para-). We would like to show you a description here but the site won’t allow us. Summary Benzene, chemical formula C6H 6, is the basic ring-structured aromatic hydrocarbon and its first two, and best known, methylated derivatives are toluene, C6H5CH 3, and xylene, C 6H4(CH 3) 2. , 2022). Jun 24, 2025 · Why Choosing the Right Solvent Matters Toluene vs xylene debates hinge on solvency, evaporation, and application needs, with toluene vs acetone clarifying milder alternatives. Oct 1, 2022 · As a typical VOC, para-xylene (PX) is widely used in the production of plastics, rubber, paint, and synthetic fibers (Miri et al. Disclaimer All ATSDR toxicological profile PDF files are electronic conversions from other electronic text files. The exact composition of the isomers commonly depends on the source. 2 lb / gal) than water and insoluble in water. It is toxic, volatile, insoluble in water, and harmful to the skin, eyes, respiratory system, and various organs. The potential Jan 27, 2021 · We explain what xylene is, its chemical formula and structure, xylene’s properties, and the applications of different xylenes. The latter two predominate. It is primarily metabolized in the liver by oxidation of a methyl group and conjugation with glycine to yield methyl hippuric acid, which is excreted in the urine. in 1982 to 6. m-Xylene is commonly the predominant component (40-77%) in commercial preparations of xylenes (also referred to as mixed xylenes), with the other components each comprising roughly up to 20% of the mass. Exposure to xylene occurs primarily through dermal, oral, and respiratory pathways. May 30, 2018 · After 40 years in limbo: Styrene is probably carcinogenic Date: May 30, 2018 Source: Aarhus University Summary: "Possibly carcinogenic and should be investigated more closely. Feb 21, 2003 · The term xylenes refers to mixtures of the three xylene isomers (o-, m-, p-) and ethylbenzene. [Note: A solid below 56°F. " For forty years Structural formula: (National Center for Biotechnology Information (NCBI; US) 2005c) TLV®–TWA, 20 ppm A4 – Not Classifiable as a Human Carcinogen OTO p-xylene and mixed isomers containing p-xylene To view TLV and Documentation, you must be logged in as an ACGIH member or have previously purchased the documentation. They are derived from the substitution of two hydrogen atoms with methyl groups in a benzene ring; which hydrogens are substituted determines which of three Xylene is marketed principally as a mixture of ortho, meta and para isomers, generally referred to as ‘mixed xylenes’. , Gallissot F. AI generated definition based on: An Introduction to Interdisciplinary Toxicology, 2020 Feb 21, 2003 · This IRIS assessment for Xylenes consists of hazard identification and dose-response assessment data and provides support for EPA risk management decisions. It does not dissolve in water but is miscible with various organic liquids. Nov 1, 2024 · Aromatic compounds represent the second most prevalent group of organic constituents in nature, following carbohydrates. Master Xylene in Chemistry-Explore its structure, uses, and effects. 1 CHEMICAL PROFILE Xylene is found in small proportions in petroleum catalytic processes used in a petroleum refinery. Hazard category Ignitable liquid and vapor, harmful if inhaled, skin irritation, severe eye irritation, may have negative effects on fertility and/or fetuses, may damage the central nervous system, may cause somnolence and/or dizziness, may be life-threatening in the event of entry to the airway after swallowing, toxic to aquatic life, toxic to aquatic life with long-term, continuous effects In the petroleum refining and petrochemical industries, the initialism BTX refers to mixtures of benzene, toluene, and the three xylene isomers, all of which are aromatic hydrocarbons. Exposure to xylene can occur via inhalation, ingestion, eye or skin contact. Cargo Handling Sheet Para Xylene Document Date: 23 June 2017 Revision 4 Cargo Handling Sheets are for the use of vessels chartered by Shell Chemicals MATERIAL SAFETY DATA SHEET Chemical Product Product Name: para-XYLENE (p-Xylene) CAS#: 106-42-3 Synonym: p-Methyltoluene Chemical Name: 1,4-Dimethylbenzene Chemical Formula: C6H4(CH3)2 There are three isomers of xylenes: ortho- or o-xylene (1,2-dimethylbenzene), meta- or m-xylene (1,3-dimethylbenzene), and para- or p-xylene (1,4-dimethylbenzene). Para-xylene has the methyl groups attached on opposite sides of the ring; ortho-xylene has the two methyl groups next to each other. The CAS number is unique, identifying number, assigned by the Chemical Abstracts Service, to a specific chemical. htm[14/12/20 12:18:11:AM] Cargo Information Scheme Dec 4, 2024 · Xylene is a colourless, flammable liquid with a sweet odour that exists in three forms: meta-xylene, ortho-xylene and para-xylene. Loss of consciousness. posted on Friday, April 28, 2017. It is in the positions of the two methyl groups, their arene substitution pattern, that it differs from the other isomers Environment Safety Assessment Ortho-Xylene and para-Xylene are not acutely toxic to aquatic organisms. Xylene is a colorless, flammable liquid with a sweet odor. (1985) strongly indicate that benzene is an experimental carcinogen. The hazards of xylene are well documented, making it a potential occupational hazard for the histopathological technicians. Xylene exists as three isomers (ortho-, meta-, and para-xylene), which can be found singly or, more commonly, mixed in varying proportions. and Morel G. This is depicted in Figures 1 and 2. Stay informed, stay safe! Para xylene is defined as an isomer of xylene that has been identified as ototoxic, affecting hearing through the poisoning of hair cells in the cochlea. 0% NFPA health rating 2 NFPA fire rating 3 NFPA reactivity rating 0 NFPA special instruction 1,4-Dimethylbenzene, para-Xylene, p-Xylol Colorless liquid with an aromatic odor. 88 Ionization potential 8. combustible substance is a solid, liquid or gas that will burn. For the It is extremely important to keep tank empty during washing to avoid settlement Para Xylene. , petroleum refineries, chemical plants), in May 13, 2024 · Discover the hidden dangers of xylene toxicity. 9-1. The environmental fate Production of discrete changes in dopamine and nonadrenaline levels and turnover in various parts of the rat brain following exposure to xylene, ortho-, meta-, and para-xylene, and ethylbenzene. It is used to sterilize some materials. Regulations or While only limited evidence of benzene carcinogenicity in experimental animals exists, the recent findings of the National Toxicology Program (NTP, 1984) in the U. Xylene is flammable and practically insoluble. The p- stands for para-, indicating that the two methyl groups in p -xylene occupy the diametrically opposite substituent positions 1 and 4. For the Xylenes evaporate easily. Nov 24, 2023 · As a building-block chemical, paraxylene is used to create polyethylene terephthalate (PET) plastic bottles, polyester fabrics, and many other products common to daily life. 56 eV Lower explosive limit (LEL) 0. Oct 6, 2022 · Paraxylene is generally considered to have low acute toxicity at levels found in the workplace. , 1977). 86-0. Both the International Agency for Research on Cancer (IARC) and EPA have found that there is insufficient information to determine whether or not xylene is carcinogenic and consider xylene not classifiable as to its human carcinogenicity. These different forms are referred to as isomers. It is one of the three isomers of dimethylbenzene known collectively as xylenes. Overall Evaluation of Carcinogenicity 1,4-DIOXANE (CAS 123-91-1) 2B Possibly carcinogenic to humans. Xylene exists in three distinct isomeric forms, differing in the relative positions of the two methyl groups – ortho, meta and para. The A carcinogen is a substance that causes cancer. Renal and hepatic toxicity has been described following human accidental poisonings and experimental exposure of rats and mice. At an industrial level xylenes are synthesized by the process of methylation of benzene and toluene. and Maltoni et al. A. Vapors heavier than air and may be narcotic in high concentrations. Used as a solvent for paints Xylenes are a mixture of three isomers: meta-xylene (m-xylene), ortho-xylene (o-xylene), and para-xylene (p-xylene) with the meta-isomer usually being the dominant part of the mixture at 40-70%. M. They are considered inherently biodegradable. Xylenes are a mixture of three isomers: meta-xylene (m-xylene), ortho-xylene (o-xylene), and para-xylene (p-xylene) with the meta-isomer usually being the dominant part of the mixture at 40-70%. 1 It is a colorless, flammable, liquid hydrocarbon with a characteristic aromatic odor. It is insoluble in water but soluble in alcohol, chloroform, ether, and many organic solvents. There are three forms of xylene in which the methyl groups vary on the benzene ring: meta-xylene, ortho-xylene, and para-xylene (m-, o-, and p-xylene). It occurs naturally in petroleum and coal tar. Ortho-Xylene and para-Xylene are insoluble in water and spread out on the surface of the water, even if a small fraction of the constituents may be dissolved. Agents classified by the IARC Monographs, Volumes 1–139CSV Xylene is an aromatic hydrocarbon widely used in industry and medical technology as a solvent. Where are Xylenes found and how are they used? Xylenes are found naturally in the environment, as well as from human activities. The obtained Xylol contains 40 to 65% of m-xylene and approximately 20% of o-xylene, 20% of p-xylene and 20% of ethylbenzene. Developmental toxicity of inhaled ortho-, meta-, and para-xylene in rats. Jan 1, 1994 · Xylene is an aromatic hydrocarbon widely used in industry and medical technology as a solvent. Xylene is a colorless, sweet-smelling liquid that catches on fire easily. The physiological properties of Xylene differ for each of its Apr 13, 1999 · In mice inhaling para -xylene, methylhippurate accumulated in the nasal mucosa and olfactory bulb. Nausea. It is extremely important to keep tank empty during washing to avoid settlement Para Xylene. Developmental toxicities of ethylbenzene, ortho-, meta-, para-xylene and technical xylenes in rats following inhalation exposure. May be toxic by ingestion. Each peer-reviewed profile identifies and reviews the key literature that describes a hazardous substance's toxicologic properties. Collins of The Collins Law Firm, P. Aspiration of this MATERIAL SAFETY DATA SHEET Chemical Product Product Name: para-XYLENE (p-Xylene) CAS#: 106-42-3 Synonym: p-Methyltoluene Chemical Name: 1,4-Dimethylbenzene Chemical Formula: C6H4(CH3)2 There are three isomers of xylenes: ortho- or o-xylene (1,2-dimethylbenzene), meta- or m-xylene (1,3-dimethylbenzene), and para- or p-xylene (1,4-dimethylbenzene). Because these methyl six-carbon benzene ring, three forms of xylene, The three isomers, ortho-, meta- and para-xylene are thus isolated together from their mixed. 5 Permitted for use as an inert ingredient in non-food pesticide products; [EPA] Found in coal tar; Commercial xylene is a mixture of the o-, m-, and p- isomers; Used as a solvent, raw material, catgut sterilant, and in microscopy; [Merck Index] Used predominately to make purified terephthalic acid (PTA) and dimethyl terephthalate (DMT) which are used in polyester production; Also used as a Xylenes occur as three isomers, each having two methyl groups attached to a basic benzene hydrocarbon ring. Xylenes are released to the atmosphere primarily as fugitive emissions from industrial sources (e. The ATSDR toxicological profile succinctly characterizes the toxicologic and adverse health effects information for the hazardous substance described here. In 1982 it was estimated that industries consumed xylenes as follows: production of ortho-xylene, 15%; production of para-xylene, 60%; miscellaneous, 14%; exports, 11%. The xylene isomers are distinguished by the designations ortho- (or o -), meta - (or m -), and para - (or p -) as indicated in the adjacent diagram. This conversion may have resulted in character translation or format errors. Commercial grade xylene, in which m-xylene is usually the major constituent, is a clear, colorless liquid with a sweet, aromatic odor. Jun 30, 2022 · Overview Xylene is used as a solvent, to manufacture petrol, as a raw material to manufacture chemicals used to make polyester fibre, and to make dyes, paints, lacquers, and insecticides. Smaller amounts are eliminated unchanged in the exhaled air. Jan 1, 2025 · Xylene can be found as a mixed combination of these isomers or in any of the isomeric forms, o, m, or p-xylene, which differ in the location of the methyl group on the benzene ring. 1% Upper explosive limit (UEL) 6. 17 Freezing point/melting point Vapor pressure 9 mmHg for m and p-xylene, 7 mmHg for o-xylene Flash point 81-90°F Vapor density Specific gravity 0. 2 Environmental occurrence Commercial xylene is a mixture of the three xylene isomers in the following per-centage ranges: ortho-xylene, 10–25%; meta-xylene, 45–70%; and para-xylene, 6–15%. Less dense (at 7. Xylenes occur naturally in petroleum and coal tar and can be detected in air, water and soil. Xylenes are released into the atmosphere as fugitive emissions from industrial sources, from auto exhaust, and through volatilization from their use as solvents. A mixture of all three isomers is termed xylol. Commercially obtained Xylene is a colourless, flammable, non-viscous, toxic liquid. AI generated definition based on: Advances in Catalysis, 2015 The three xylene isomers: o -xylene, m -xylene, and p -xylene In organic chemistry, xylene or xylol (from Greek ξύλον (xylon) 'wood'; [1][2] IUPAC name: dimethylbenzene) is any of three organic compounds with the formula (CH3)2C6H4. Xylenes are one of the highest-volume chemicals produced and used by industry. This cumulative report now includes 256 listings of substances — chemical, physical, and biological agents; mixtures; and exposure circumstances — that are known or reasonably anticipated to cause cancer in With o-xylene and technical xylene, developmental toxicity also occurred at 500 ppm, in the absence of maternal toxic effects. There are three forms of xylene: m-xylene, o-xylene and p-xylene. Environmental occurrence Commercial xylene is a mixture of the three xylene isomers in the following percentage ranges: ortho -xylene, 10–25%; meta -xylene, 45–70%; and para -xylene, 6–15%. Oct 1, 2025 · X Xylenes CASRN 1330-20-7 Physical Properties There are three forms or isomers of xylene, meta-xylene, ortho-xylene, and para-xylene. 3. Flash point 81-115°F. For ortho-, meta-, and paraxylene, these isomers are known as 1,2-dimethylbenzene, 1,3—dimethylbenzene, and 1,4—dimethylbenzene, respectively. Toluene and xylene. The Jan 1, 1994 · Xylene is an aromatic hydrocarbon widely used in industry and medical technology as a solvent. , 2021). AI generated definition based on: Advances in Catalysis, 2015 Para-xylene is defined as an intermediate in the production of terephthalic acid and dimethylterephthalate, which are precursors for polyethylene terephthalate (PET) polyester. The exact composition of the commercial xylene grade depends on the source but a typical mixture will also contain ethylbenzene at 6 - 20% in addition to the three isomers. Not for medicinal, household or other use. Drowsiness. Acute exposure to high doses or chronic exposure can cause pulmonary damages, liver, kidneys and neurological disorders. The type of isomer is distinguished by the position of the methyl groups on the ring. The use of xylenes as a solvent, in paints and coatings, and in gasoline is widespread. Department of Health and Human Services (HHS) Secretary. Xylenes are clear, colourless, volatile liquids with a strong, aromatic odour. Dizziness. : Inhalation may affect the nervous system causing headache, possibly dizziness, nausea, weakness, loss of coordination and unconsciousness. This edition supersedes any previously released draft or final profile. 2007. Substance details Substance name: Xylenes (individual or mixed isomers) CASR number: 1330-20-7 Molecular formula: C 8 H 10 Synonyms: Dimethylbenzene, Xylol Substance identity Substance identity The ‘Substance identity’ section is calculated from substance identification information from all ECHA databases. Xylene’s role in what is xylene used for in painting suits heavy coatings, while toluene excels in rapid processes. These isomers are distinguished by the position of two methyl groups on a benzene ring, with ortho having the methyl groups on adjacent carbons, meta having them separated by one carbon, and para having them on opposite sides of the ring. Its production and use in petroleum products, as a solvent, and as an intermediate in 1. It is part of a group of aromatic solvents that can lead to cochlear impairment at lower doses compared to other neurotoxic effects. g. All three are found in commercially available xylene. C. Cargo Handling Sheet Para Xylene Document Date: 23 June 2017 Revision 4 Cargo Handling Sheets are for the use of vessels chartered by Shell Chemicals Three xylene isomers exist: ortho-xylene, meta-xylene, and para-xylene, abbreviated o-, m-, and p-xylene, respectively. There are three forms of xylene: meta-xylene, ortho-xylene and para-xylene Xylene is a type of chemical compound that can exist in three different forms, which are known as ortho, meta, and para isomers. PARA-XYLENE (CAS 106-42-3) 3 Not classifiable as to carcinogenicity to humans. It can be obtained from various processes, including shape-selective adsorption, transalkylation of toluene, and disproportionation of toluene. It is commonly found in products such as varnish, ink Commercial or mixed xylenes are composed of three isomers: meta-xylene (m-xylene), ortho-xylene (o-xylene), and para-xylene (p-xylene), of which the m-isomer usually predominates (44–70% of the mixture) (Fishbein, 1988; ATSDR, 1995). Most mixed xylenes contain ethylbenzene, except for a small volume produced by toluene disproportionation (Ransley, 1984). In the following discussion of the health effects of xylene, the effects of both the mixture and the individual isomers are presented. Jan 15, 2025 · Xylene is a low-toxicity, non-carcinogenic chemical substance, and its hazard class is based on the classification of non-carcinogenic effects of chemicals by the American Society of Industrial Scientists (ASTM), and its risk class is 3. Collectively known as BTEX, benzene, ethylbenzene, toluene, and xylene exhibit various cardiovascular, respiratory, neurological, carcinogenic, and irritant effects (Halios et al. The three different forms are known as isomers. Exposure to high levels of paraxylene vapors can lead to drowsiness and dizziness, and contact exposure to the skin and eyes may result in dry skin, redness and irritation. Health and safety authorities in most countries, including Australia, recommend a threshold limit value (TLV) of 100 ppm in the working environment. Mixed xylenes are a mixture of the three isomers and a small amount of ethylbenzene. Commercial xylene is a mixture of three isomers of xylene (m-, o-, and p-xylene) with <20% ethyl-benzene. Department of Health and Human Services, Public Health Service. 2. Some substance identifiers may have been claimed confidential, or may not have Symptoms/effects after skin contact : Headache. 7-7. Fact sheet on a contaminant (1,4-xylene (para-xylene)) and its chemical properties, how it will react in the environment, its main sources of contamination and a brief overview of health and safety issues. 5 mg/L in brine shrimp, suggesting that the m-xylene and p-xylene isomers are slightly toxic to estuarine/marine invertebrates on an acute basis. Toluene and xylene poisoning can occur when someone swallows these substances, breathes in their fumes, or when these substances touch the skin. However, the only indication of a treatment-related effect was a slight decrease in fetal weight. Learn its health risks, exposure routes, and safe handling practices. Food Chem Toxicol, 41, 415-429. Para-xylene is primarily used for the production of terephthalic acid, which is a key component in the manufacture of synthetic textile fibers and resins. There are three forms of xylene in which the methyl groups vary on the benzene ring: meta-xylene, ortho-xylene, and para-xylene (m-, o-, and p-xylene). According to the International Agency for Research on Cancer (IARC) and US EPA, benzene 1. What is Xylene? Xylene is a colorless liquid that had a sweet odor. These different forms are para m o p referred to as isomers. Its production and use in petroleum products, as a solvent, and as an intermediate in Para-Xylene Safety Data Sheet according to US HazCom 2012 Issue date: 26 May 2015 Revision date: 17 April 2023 Supersedes: 5 October 2017 Version: 1. htm[14/12/20 12:18:11:AM] Cargo Information Scheme Commercial xylene is a mixture of three isomers of xylene (m-, o-, and p-xylene) with <20% ethyl-benzene. Commercial mixed xylenes contain more than 80% xylene isomers and Commercial or mixed xylenes are composed of three isomers: meta-xylene (m-xylene), ortho-xylene (o-xylene), and para-xylene (p-xylene), of which the m-isomer usually predominates (44–70% of the mixture) (Fishbein, 1988; ATSDR, 1995). Xylene evaporates into air very quickly and does not dissolve readily in water. Xylenes (mixtures of ortho-, meta-, and para-isomers) are used as industrial solvents, synthetic intermediates, and solvents in commercial products such as paints, coatings, adhesive removers, and paint thinners; they are also a component of gasoline. Get expert insights and ace exams with Vedantu’s guidance! A Toxicological Profile for Xylene, Draft for Public Comment was released in September 2005. Xylene is an aromatic hydrocarbon known for its wide usage in tissue processing, staining and cover slipping in the histology laboratory. Flash point 81-115 °F. As every other profession became cautious of the occupational hazards, the very speciality that identifies the illnesses became one of Production of xylenes has increased: from about 5 billion lbs. Apr 6, 2021 · Boiling point 281°F Molecular weight 106. 3 and 24. Xylene may enter the atmosphere primarily from fuel emissions and exhausts, due to its use in gasoline. Recently, the amount of the major metabolite of xylene, methylhippuric acid (MHA), in urine has been recommended as a better indicator of exposure. Emergency telephone: : Pure Para-xylene : 1016976, 1016978, 1016977, 1029304, 1028381, 1028382 : Chevron Phillips Chemical Company LP Specialty Chemicals 10001 Six Pines Drive The Woodlands, TX 77380 The molecular formula is C6 H4 (CH3) 2 o and it is one of the three organic compounds of xylene as m-xylene, m-xylene, and p-xylene. It is generally referred to as Mixed, Total or Technical-Grade Xylene. The individual isomers are also available commercially. Commercial-grade (mixed) xylene typically is composed of approximately 20% ortho-xylene, 40% What is xylene? There are three forms of xylene in which the methyl groups vary on the benzene ring: -xylene, -xylene, and meta ortho -xylene ( -, -, and -xylene). Vomiting. The substance identifiers displayed in the InfoCard are the best available substance name, EC number, CAS number and/or the molecular and structural formulas. A clear colorless liquid with a characteristic aromatic odor consisting of a mixture of the three isomers (ortho-, meta- and para-). : p-Xylene Dec 6, 2024 · Applications of Xylene Petroleum Refining and Chemical Synthesis Xylene isomers, including para-xylene, meta-xylene, and ortho-xylene, are crucial intermediates in chemical syntheses. The three isomers of p-Xylene (para-xylene) is an aromatic hydrocarbon. hfkmd m2ds 8ta9 kzxw rcpill 3sloi 6sug jwb3vjv c3x4emmg 8ftcj