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CAS RN: 115-11-7 | Product Number: I0091

Isobutene (in cylinder without valve) [To use this product charged in cylinder, a valve is required which is sold separately (Product Code:V0030)]

Purity: >99.0%(GC)
Chemical Substance Law (ENCS):   2-16
  • Isobutylene
  • 2-Methylpropene
≥20  ≥20  ≥20 
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This item is prohibited for air transportation.

Product Number I0091
Purity / Analysis Method >99.0%(GC)
Molecular Formula / Molecular Weight C__4H__8 = 56.11  
Physical State (20 deg.C) Gas
Packaging and Container 100G-Pressurized Cylinder (View image)
CAS RN 115-11-7
Reaxys Registry Number 773645
PubChem Substance ID 87571493
SDBS (AIST Spectral DB) 9264
Merck Index (14) 5141
MDL Number


Purity(GC) min. 99.0 %
Properties (reference)
Melting Point -140 °C
Boiling Point -7 °C
Solubility in water Insoluble
Pictogram Pictogram Pictogram
Signal Word Danger
Hazard Statements H220 : Extremely flammable gas.
H280 : Contains gas under pressure; may explode if heated.
Precautionary Statements P210 : Keep away from heat/sparks/open flames/hot surfaces. No smoking.
P381 : Eliminate all ignition sources if safe to do so.
P377 : Leaking gas fire: Do not extinguish, unless leak can be stopped safely.
P410 + P403 : Protect from sunlight. Store in a well-ventilated place.
Related Laws:
Chemical Substance Law (ENCS) 2-16
RTECS# UD0890000
Transport Information:
UN Number UN1055
Class 2.1
Air Transportation Airmail banned
t-Bu protection of Alcohols using Isobutylene



  • Protection for the Hydroxyl Group, Including 1,2- and 1,3-Diols
    • P. G. M. Wuts, in Greene’s Protective Groups in Organic Synthesis, 5th ed., ed. by P. G. M. Wuts, John Wiley & Sons, Inc., Hoboken, New Jersey, 2014, Chap. 2, 17.

PubMed Literature

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