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Merck
CN

58552

2-Methylpropene

purum, ≥99.5%

Synonym(s):

Isobutylene

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About This Item

Linear Formula:
(CH3)2C=CH2
CAS Number:
Molecular Weight:
56.11
UNSPSC Code:
12142100
NACRES:
NA.22
PubChem Substance ID:
EC Number:
204-066-3
Beilstein/REAXYS Number:
773645
MDL number:
Assay:
≥99.5%
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InChI

1S/C4H8/c1-4(2)3/h1H2,2-3H3

SMILES string

CC(C)=C

InChI key

VQTUBCCKSQIDNK-UHFFFAOYSA-N

vapor density

2 (vs air)

vapor pressure

3278 mmHg ( 37.7 °C)

grade

purum

assay

≥99.5%

autoignition temp.

869 °F

bp

−6.9 °C (lit.)

Quality Level

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Packaging

Liquified gas cylinder with a net ~3.6kg of 2-methylpropene, fitted with a valve featuring a 21.8 × 1/14′′ left‑hand thread on the outlet side (DIN 477‑1 compliant)

Other Notes

Sales restrictions may apply

pictograms

FlameGas cylinder

signalword

Danger

hcodes

Hazard Classifications

Flam. Gas 1 - Press. Gas Liquefied gas

Storage Class

2A - Gases

wgk

nwg

flash_point_f

-112.0 °F - closed cup

flash_point_c

-80 °C - closed cup

ppe

Eyeshields, Faceshields, Gloves

Regulatory Information

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Jin-Zhou Zhu et al.
Biomaterials, 33(33), 8204-8212 (2012-08-18)
The presence of polymer coating on a coronary stent is a major mediator of coronary inflammation reaction thereby affects re-endothelialization. Poly(styrene-block-isobutylene-block-styrene) (SIBS) is one of the most attractive alternatives to serve as stent coating, but has shown less than optimal
Jong-Ho Choi et al.
Chemphyschem : a European journal of chemical physics and physical chemistry, 7(12), 2526-2532 (2006-11-09)
The radical-radical reaction mechanisms and dynamics of ground-state atomic oxygen [O(3P)] with the saturated tert-butyl radical (t-C4H9) are investigated using the density functional method and the complete basis set model. Two distinctive reaction pathways are predicted to be in competition:
Hongfu Yuan et al.
Applied spectroscopy, 61(1), 96-101 (2007-02-22)
The molar ratio between methanol and isobutylene (MRMI) is very important to the operation of methyl tertiary butyl ether (MTBE) production units. A new on-line near-infrared (NIR) analytical system was integrated for monitoring the MRMI in real time and was
Markus Burkhardt et al.
Langmuir : the ACS journal of surfaces and colloids, 24(5), 1769-1777 (2008-01-30)
We report on interpolyelectrolyte complexes (IPECs) formed by micelles of ionic amphiphilic diblock copolymers with polyisobutylene (PIB) and poly(sodium methacrylate) (PMANa) blocks interacting with quaternized poly(4-vinylpyridine) (P4VPQ). The interpolyelectrolyte complexation was followed by turbidimetry and small angle neutron scattering (SANS).
Nava Dayan et al.
Journal of cosmetic science, 60(1), 15-24 (2009-03-20)
Hydrogenated polyisobutene (HP) is used in topically applied cosmetic/personal care formulations as an emollient that leaves a pleasing skin feel when applied, and rubbed in after application. This effect, although distinguishable to the user, is difficult to define and quantify.

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