Acute exposure to vapor caused central nervous system depression in mice and death in rats due to respiratory arrest. Media in category 1,2,4trimethylbenzene the following 8 files are in this category, out of 8 total. Remediation of trimethylbenzene isomers tmb is particularly challenging, but effective options including bioremediation are available. Remove victim to fresh air and keep at rest in a position comfortable for breathing. May 24, 2001 1, 2, 4 trimethylbenzene figure 1a, also known as pseudocumene, is a volatile aromatic hydrocarbon liquid henrys law constant 6.
It is also used as a sterilizing agent and in the manufacture of dyes, perfumes, and resins. It appears to contain significant amounts of the 1, 2, 4 isomer as well as other aromatic compounds. However, there seems to be a problem in obtaining 1,2,3trimethylbenzene above 90x purity. Asymmetrical trimethylbenzene, psicumene, hemimellitene 1,2,4 trimethylbenzene, pseudocumene note. Hemimellitene is a mixture of the 1, 2,3isomer with up to 10% of related aromatics such as the 1, 2, 4 isomer. If released to the atmosphere, 1, 2, 4 trimethylbenzene will exist solely in. It occurs naturally in coal tar and petroleum crude oil1. Tcb is produced in large amounts estimated to be between 22 million and 32 million pounds in 1990 by two companies in the united states. Hemellitol, hemimellitene 1, 2,3 trimethylbenzene note.
Hemimellitene is a mixture of the 1, 2,3isomer with up to 10% of related aromatics such as the 1, 2,4isomer. Tmb is has characteristics similar to the btex compounds and some similar to middle range fractions such as naphthalene. Quantitative estimate of carcinogenic risk from oral exposure pdf 10 pp, 323 k. For polybaa and polypha, mxylene and 1,3,5trimethylbenzene compounds have the highest intensities. Tmb were identified in the available scientific literature. Used as a sterilizing agent and in the manufacture of dyes, perfumes, and resins. It is nearly insoluble in water but soluble in organic solvents. Asymmetrical trimethylbenzene, psicumene, hemimellitene 1, 2, 4 trimethylbenzene, pseudocumene note. For other data an order of magnitude logic might apply. All three compounds have the formula c 6 h 3 ch 3 3, which is commonly abbreviated c 6 h 3 me.
Classified as an aromatic hydrocarbon, it is a flammable colorless liquid with a strong odor. Program and regulatory information about this substance, including links to epa applicationssystems, statuesregulations, or other sources that track. Belongs to the following reactive groups hydrocarbons, aromatic. Though no production forecasts have been made for 1,2,4trimethyl benzene, tri data. The liquid is a primary skin irritant but systemic intoxication through skin exposure is unlikely. Volatilization from moist and dry soil surfaces is expected to occur. The other two isomeric trimethylbenzenes are 1, 2, 4 trimethylbenzene pseudocumene and 1, 2,3 trimethylbenzene hemimellitene. In the case of polybaa, mxylene and 1,3,5trimethylbenzene are the degradation products that can result directly from the degradation of the polymers as polyba. Clear, colorless liquid with a distinctive, aromatic odor. Water and aromatic hydrocarbons with a single ring like benzene, methylbenzene toluene, 1,2dimethylbenzene oxylene, 1,4dimethylbenzene pxylene, and 1,3,5trimethylbenzene have a type iii phase behavior. Bioconcentration in aquatic organisms is moderate to high based on bcf values of 31275, measured in carp. It occurs naturally in coal tar and petroleum about 3%. These values can be used for readacross for 1, 2, 4trimethylbenzene.
The critical curve is interrupted and a liquidliquidgas threephase line terminates at a liquidgas ucep, where the organic. To support you, coleparmer is open for business and shipping product daily. Mesitylene or 1,3,5 trimethylbenzene is a derivative of benzene with three methyl substituents positioned symmetrically around the ring. It appears to contain significant amounts of the 1,2,4isomer as well as other aromatic compounds. Material safety data sheet toxin and toxintarget database.
The majority of 1,2,4trimethylbenzene is used as a gasoline additive. It is used in jet fuel, mixed with other hydrocarbons, to. For more information about the substance, you may click one of the links below to take you to the relevant section. Isolated 1,2,4trimethylbenzene is used in a number of industrial applications. The other two isomeric trimethylbenzenes are 1,2,4trimethylbenzene pseudocumene and 1,2,3trimethylbenzene hemimellitene. It is used chiefly as the raw material for production of trimellitic anhydride. It is a major component typically 40% of a petroleum refinery distillation fraction known as the c9 aromatic fraction or simply the c9 fraction. Global 1, 2, 4 trimethylbenzene market is segmented on the basis of application and geography. The kinematic viscosity of 1, 3, 5trimethylbenzene was experimentally determined to be 0. In water, 1, 2, 4 trimethylbenzene may adsorb to sediment or particulate matter. United states environmental protection agency web site.
Ac140090000, ac140090010, ac140090025, ac140090100, ac140095000 synonyms. Buy 1,2,4trimethylbenzene and more from our comprehensive selection of chemicals t from coleparmer covid19 update. Uses, sources and potential exposure to toxic air pollutants. It is a flammable aromatic hydrocarbon with a strong odor. It is one of the three isomers of trimethylbenzene. Global 1,2,4trimethylbenzene market is segmented on the basis of application and geography. Processed studies and datawaiving due to the number of the substances and the associated information, substance data is processed and aggregated in an automatic process. Hemellitol, hemimellitene 1,2,3trimethylbenzene note. Pseudocumene, asymmetrical trimethylbenzene, psicumene, 1, 2, 4 tmb, trimethylbenzene. Pseudocumene, asymmetrical trimethylbenzene, psicumene, 1,2,4tmb, trimethylbenzene.
Production of 1,2,4trimethylbenzene occurs during petroleum refining as a major component of the c9 aromatic hydrocarbon fraction. Occurencesuses occurs naturally in coal tar and petroleum. The tmbs are aromatic hydrocarbons with three methyl substituents attached to a benzene ring and the chemical formula c9h12. Integrated risk information system national center for environmental assessment office of research and development u. Classified as an aromatic hydrocarbon, it is a flammable colorless liquid. Hemimellitene is a mixture of the 1,2,3isomer with up to 10% of related aromatics such as the 1,2,4isomer. Apply absorbent and place cleanup material in sealedmarked containers for proper disposal. Production of 1, 2, 4 trimethylbenzene occurs during petroleum refining as a major component of the c9 aromatic hydrocarbon fraction.
It is nearly insoluble in water, but wellsoluble in ethanol, diethyl ether, and benzene. In water, 1,2,4trimethylbenzene may adsorb to sediment or particulate matter. Sources 1,2,4trimethylbenzene is a naturally occurring chemical found in coal tar and petroleum crude oil. In laboratory animal studies, it harms the adrenal glands. Acros organics bvba janssen pharmaceuticalaan 3a 2440 geel, belgium. However, there seems to be a problem in obtaining 1, 2,3 trimethylbenzene above 90x purity.
The chemical and physical properties of the tmb isomers are similar to one another. Epa 2005, there is inadequate information to assess carcinogenic potential of tmbs. Regulatory process names 11 translated names 18 iupac names 7 other identifiers 2. It is also used in the manu facture of pharmaceuticals and dyes sax and lewis 1987. Proposed notification levels for 1,2,4trimethylbenzene. Under the guidelines for carcinogen risk assessment u. If released to the atmosphere, 1,2,4trimethylbenzene will exist solely in. While naming compounds with multiple substituents in a ring, it is required that you give the lowest number to the most substituents possible. Proposed notification levels for 1,2,4trimethylbenzene and 1. Asymmetrical trimethylbenzene, psicumene, hemimellitene 1,2,4trimethylbenzene, pseudocumene note. Mesitylene or 1,3,5trimethylbenzene is a derivative of benzene with three methyl substituents positioned symmetrically around the ring. For more information about the substance, you may click one of the.
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