C5h12 May 20, 2025 · pentane is a straight-chain alkane with the molecular formula C5H12 and the CAS number 109-66-0. However, NIST makes no warranties NIST subscription sites provide data under the NIST Standard Reference Data Program, but require an annual fee to access. We'll also draw the skeletal structure and molecular structure for Pentan n-Pentane is a hydrocarbon with the molecular formula C5H12. Isopentane is a volatile and flammable liquid. 7°C; b. It is a colorless, flammable liquid that is widely used as a solvent and in the production of gasoline. Jun 27, 2025 · In the C5H12 Lewis structure, there are four single bonds between the five carbon atoms. Isopentane is NIST subscription sites provide data under the NIST Standard Reference Data Program, but require an annual fee to access. However, NIST makes no NIST subscription sites provide data under the NIST Standard Reference Data Program, but require an annual fee to access. The molecular formula C5H12 (molar mass: 72. 36. However, NIST makes no warranties to that effect, and NIST shall not be liable for any n-pentane is a straight-chain alkane hydrocarbon with the chemical formula C5H12. Pentane has three structural isomers that are n-pentane, Iso-pentane (methyl butane) and neopentane (dimethylpropane). It has three structural isomers: n-pentane, isopentane and neopentane. It is one of three structural isomers with the molecular formula C 5 H 12, the others being pentane (n -pentane) and neopentane (2,2-dimethylpropane). Температуры кипения пентанов колеблются от 9 до 36 ℃. It is obtainedby distillation of petroleum. 63; m. Pentane is an organic compound with the formula C5H12—that is, an alkane with five carbon atoms. Data from NIST Standard Reference Database 69: NIST Chemistry WebBook The National Institute of Standards and Technology (NIST) uses its best efforts to deliver a high quality copy of the Database and to verify that the data contained therein have been selected on the basis of sound scientific judgment. pdb Pentane is an organic compound with the chemical formula of C 5 H 12. Aug 5, 2020 · The three structural isomers of C5H12 are pentane, isopentane (2-methylbutane), and neopentane (2,2-dimethylpropane). Neopentane is a highly branched hydrocarbon with four methyl groups attached to a central carbon atom. Как и в случае с другими алканами, более разветвлённые изомеры, как правило, имеют более низкие температуры кипения. The purpose of the fee is to recover costs associated with the development of data collections included in such sites. The reference state for specific entropy is based on the Third Law of Thermodynamics. It is also produced by the catalytic crackdown of naphtha. Pentane is an organic compound with five carbon atoms and 12 hydrogen atoms. Jul 1, 2025 · The Lewis structure of C5H12 contains sixteen single bonds, with five carbons in the center. d. . In the IUPAC, the other two isomers is 2- methyl butane and 2,2- dimethyl propane. But in the IUPAC, pentane only represents n -pentane. edu/jmol/molecules/pentane. The left carbon and right carbon are attached with three Chemical Entities of Biological Interest (ChEBI) is a freely available dictionary of molecular entities focused on 'small' chemical compounds. chem. Follow the links above to find out more about the data in these sites and their terms of usage. Definition ChemSpider record containing structure, synonyms, properties, vendors and database links for n-Pentane, 109-66-0, OFBQJSOFQDEBGM-UHFFFAOYSA-N Chemical, physical and thermal properties of pentane, also called n-pentane. Pentane is a straight-chain alkane, while isopentane and neopentane have branched structures. purdue. NIST subscription sites provide data under the NIST Standard Reference Data Program, but require an annual fee to access. ChemSpider record containing structure, synonyms, properties, vendors and database links for Isopentane, 78-78-4, QWTDNUCVQCZILF-UHFFFAOYSA-N Notes Go To: Top, Mass spectrum (electron ionization), References Data from NIST Standard Reference Database 69: NIST Chemistry WebBook The National Institute of Standards and Technology (NIST) uses its best efforts to deliver a high quality copy of the Database and to verify that the data contained therein have been selected on the basis of sound scientific judgment. 1°C. However, NIST makes no warranties to that effect, and NIST shall not be Lewis structure generator creates chemical structure diagrams for compounds. The reference state for specific enthalpy is based on the enthalpy of formation relative to the elements at 25 C. However, NIST makes no warranties to that Notes Go To: Top, Antoine Equation Parameters, References Data from NIST Standard Reference Database 69: NIST Chemistry WebBook The National Institute of Standards and Technology (NIST) uses its best efforts to deliver a high quality copy of the Database and to verify that the data contained therein have been selected on the basis of sound scientific judgment. It is used as a solvent, fuel, and blowing agent for foam insulation. –129. 0939 u) may refer to: Pentanes Pentane Eupione, or eupion Isopentane, or methylbutane Neopentane, or 2,2-dimethylpropane EXTRA NOTES Number of constitutional isomers of C5H12 There are three constitutional (structural) isomers of C 5 H 12: n‑Pentane (straight chain) 2‑Methylbutane (commonly called isopentane) 2,2‑Dimethylpropane (commonly called neopentane) NIST subscription sites provide data under the NIST Standard Reference Data Program, but require an annual fee to access. ChemSpider record containing structure, synonyms, properties, vendors and database links for Neopentane, 463-82-1, 207-343-7, CRSOQBOWXPBRES-UHFFFAOYSA-N 正戊烷属极易燃液体，蒸气与空气混合可形成爆炸性气体，对水生生物具有急性毒性 [3-4]。储存需远离火源并保持通风，泄漏处理应采用活性炭吸附或泡沫覆盖，灭火时使用二氧化碳、干粉等灭火剂 [4-5] [7]。 A step-by-step explanation of how to draw the C5H12 Lewis Dot Structure (Pentane). Production Methods Pentane is produced by fractional distillation of natural gas liquids and crude oil. Its Notes Go To: Top, Infrared Spectrum, References Data from NIST Standard Reference Database 69: NIST Chemistry WebBook The National Institute of Standards and Technology (NIST) uses its best efforts to deliver a high quality copy of the Database and to verify that the data contained therein have been selected on the basis of sound scientific judgment. 626 g/mL. Usually, "pentane" represents all three isomers (n -pentane, isopentane and neopentane). The left carbon and right carbon are attached with three hydrogen Pentane Formula: C 5 H 12 Molecular weight: 72. p. It has a role as a refrigerant. It is commonly used as a reference Isopentane, also called methylbutane or 2-methylbutane, is a branched-chain saturated hydrocarbon with five carbon atoms, with formula C5H12 or CH(CH3)2(C2H5). It is an alkane with five carbon atoms. 15 g/mol, exact mass: 72. Each has distinct properties despite having the same molecular formula. То же самое справедливо и для температур Isopentane, also called methylbutane or 2-methylbutane, is a branched-chain saturated hydrocarbon (an alkane) with five carbon atoms, with formula C 5H 12 or CH (CH 3) 2(C 2H 5). The term may refer to any of three structural isomers, or to a C5H12 provides ideal gas thermodynamic properties for n-pentane over the temperature range from 200 K to 6000 K based on property information from McBride et al, 2002. 正戊烷 （英語： Pentane）， 化学式 C 5 H 12， 烷烃 中的第五个成员。正戊烷有2种 同分异构体： 异戊烷 （沸点28 °C）和 新戊烷 （沸点10 °C）。 戊烷 一词通常指正戊烷，即其直链异构体。 Calculate the molar mass of C5H12 in grams per mole or search for a chemical formula or substance. Notes Go To: Top Data from NIST Standard Reference Database 69: NIST Chemistry WebBook The National Institute of Standards and Technology (NIST) uses its best efforts to deliver a high quality copy of the Database and to verify that the data contained therein have been selected on the basis of sound scientific judgment. In chemistry, isomers are molecules with identical molecular formulas — that is, same number of atoms of each element — but distinct arrangements of atoms in FileManager opening https://www. It has a low melting point of -130 ºC and a boiling point of 36 ºC, and a density of 0. Phase diagram included. Learn about its history, properties, uses and hazards. 1488 IUPAC Standard InChI: InChI=1S/C5H12/c1-3-5-4-2/h3-5H2,1-2H3 Copy Sep 25, 2025 · Definition pentane: A straight-chain alkanehydrocarbon, C5H12; r. Pentane | C5H12 | CID 8003 - structure, chemical names, physical and chemical properties, classification, patents, literature, biological activities, safety/hazards/toxicity information, supplier lists, and more. Isopentane is an alkane that is butane substituted by a methyl group at position 2. Cyclopentane 's chemical formula is C 5H 10, so it is not an CID 123990762 | C5H12 | CID 123990762 - structure, chemical names, physical and chemical properties, classification, patents, literature, biological activities 正戊烷 （英語： Pentane）， 化學式 C 5 H 12， 烷烴 中的第五個成員。正戊烷有2種 同分異構體： 異戊烷 （沸點28 °C）和 新戊烷 （沸點10 °C）。 戊烷 一詞通常指正戊烷，即其直鏈異構體。 Feb 19, 2025 · Pentane (C5H12) is an organic compound with five carbon atoms. EXTRA NOTES Number of constitutional isomers of C5H12 There are three constitutional (structural) isomers of C 5 H 12: n‑Pentane (straight chain) 2‑Methylbutane (commonly called isopentane) 2,2‑Dimethylpropane (commonly called neopentane) NIST subscription sites provide data under the NIST Standard Reference Data Program, but require an annual fee to access. 0. The reference values are from: NIST subscription sites provide data under the NIST Standard Reference Data Program, but require an annual fee to access. 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