Polyisobutylene（PIB） - average Mv 2600000，average Mw 3050000 , CAS No.9003-27-4

CAS: 9003-27-4 Cat. No.: P418789 EC Number: 618-360-8

GRADE & PURITY average Mv 2600000，average Mw 3050000

Synonyms

2-Methylpropyline | 1-Propene, 2-methyl- | HSDB 613 | sym-Dimethylethylene | isobutylene, various grades | UN 1055 | I0091 | .gamma.-Butylene | 2-Methyl-1-propene | 2-methyl-2 propene | I1082 | Isobutene (ca. 10% in Isopropyl Ether) | 2-methyl-2-propene |

Storage

Room temperature

Shipped In

Normal

Specifications

Synonyms

2-Methylpropyline | 1-Propene, 2-methyl- | HSDB 613 | sym-Dimethylethylene | isobutylene, various grades | UN 1055 | I0091 | .gamma.-Butylene | 2-Methyl-1-propene | 2-methyl-2 propene | I1082 | Isobutene (ca. 10% in Isopropyl Ether) | 2-methyl-2-propene |

Specifications & Purity

average Mv 2600000，average Mw 3050000

Storage

Room temperature

Shipped In

Normal

Names and Identifiers

• Canonical Smiles: CC(=C)C
• IUPAC Name: 2-methylprop-1-ene
• InChIKey: VQTUBCCKSQIDNK-UHFFFAOYSA-N
• INCHI: 1S/C4H8/c1-4(2)3/h1H2,2-3H3
• Isomeric SMILES: CC(=C)C
• Reaxy-Rn: 773645
• Reaxys-RN_link_address: https://www.reaxys.com/reaxys/secured/hopinto.do?context=S&query=IDE.XRN=773645&ln=

Taxonomic Classification

Taxonomy Tree

• Kingdom Organic compounds
  • Superclass Hydrocarbons
    • Class Unsaturated hydrocarbons
      • Subclass Branched unsaturated hydrocarbons

• Kingdom: Organic compounds
• Superclass: Hydrocarbons
• Class: Unsaturated hydrocarbons
• Subclass: Branched unsaturated hydrocarbons
• Intermediate Tree Nodes: Not available
• Direct Parent: Branched unsaturated hydrocarbons
• Alternative Parents: Unsaturated aliphatic hydrocarbons Alkenes
• Molecular Framework: Aliphatic acyclic compounds
• Substituents: Branched unsaturated hydrocarbon - Unsaturated aliphatic hydrocarbon - Olefin - Alkene - Acyclic olefin - Aliphatic acyclic compound
• Description: This compound belongs to the class of organic compounds known as branched unsaturated hydrocarbons. These are hydrocarbons that contains one or more unsaturated carbon atoms, and an aliphatic branch.
• External Descriptors: alkene

Data sources

1. Djoumbou Feunang Y, Eisner R, Knox C, Chepelev L, Hastings J, Owen G, Fahy E, Steinbeck C, Subramanian S, Bolton E, Greiner R, and Wishart DS. ClassyFire: Automated Chemical Classification With A Comprehensive, Computable Taxonomy. Journal of Cheminformatics, 2016, 8:61.

DOI: 10.1186/s13321-016-0174-y

Chemical and Physical Properties

• Molecular Weight: 56.110 g/mol
• XLogP3: 2.100
• Hydrogen Bond Donor Count: 0
• Hydrogen Bond Acceptor Count: 0
• Rotatable Bond Count: 0
• Exact Mass: 56.0626 Da
• Monoisotopic Mass: 56.0626 Da
• Topological Polar Surface Area: 0.000 Ų
• Heavy Atom Count: 4
• Formal Charge: 0
• Complexity: 23.000
• Isotope Atom Count: 0
• Defined Atom Stereocenter Count: 0
• Undefined Atom Stereocenter Count: 0
• Defined Bond Stereocenter Count: 0
• Undefined Bond Stereocenter Count: 0
• The total count of all stereochemical bonds: 0
• Covalently-Bonded Unit Count: 1

References

1. Mingzu Liu, Xiuxiu Zhao, Zefeng Ma, Bing Yuan, Fengli Yu, Congxia Xie, Shitao Yu.  (2023)  An alkylation route for developing novel liquid aviation fuels from α-pinene and mixed isobutane/isobutene.  CHEMICAL ENGINEERING SCIENCE,      [PMID:] [10.1016/j.ces.2023.119174]

2. MingYang Yang, Guangyou Liu, Zheng Zeng, Shuhao Zhang, Jie Liu, Zong Qin, Zhihe Chen, Bo-Ru Yang.  (2022)  Dual-Mode Switching E-Paper by Negative Electrorheological Fluid with Reversible Silica Networks.  Advanced Materials Technologies,  7  (12): (2200371).  [PMID:] [10.1002/admt.202200371]

3. Taotao Liang, Xiaogang Guo, Abdulmoseen Segun Giwa, Jianwei Shi, Yujin Li, Yan Wei, Xiaojuan Wang, Xuansong Cao, Xiaofeng Tang, Jialun Du.  (2019)  Design and Optimization of a Process for the Production of Methyl Methacrylate via Direct Methylation.  Processes,  7  (6): (377).  [PMID:] [10.3390/pr7060377]

4. Ruofan Wang, Yanfu Yan, Wenjun Li, Zhiming Li.  (2025)  Preparation of Sn42Bi58 and Sn64.7Bi35Ag0.3 soldering pastes for Cu–Al direct soldering and study of their performance.  MATERIALS CHEMISTRY AND PHYSICS,      [PMID:] [10.1016/j.matchemphys.2025.130547]

5. Guozhang Wu, Yuanbiao Liu, Gaopeng Shi.  (2021)  New Experimental Evidence for Thermodynamic Links to the Kinetic Fragility of Glass-Forming Polymers.  MACROMOLECULES,      [PMID:] [10.1021/acs.macromol.1c00670]