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Chemical Name:
r600a;R 600a;i-Butane;Isobutan;methyl-2;ISOBUTANE;iso-C4H10;tert-Butane;Methylpropane;2-METHYLPROANE
Molecular Formula:
Formula Weight:
MOL File:

ISOBUTANE Properties

Melting point:
−160 °C(lit.)
Boiling point:
−12 °C(lit.)
2.064 g/mL at 25 °C(lit.)
vapor density 
2.01 (21 °C, vs air)
vapor pressure 
72.2 psi ( 37.7 °C)
refractive index 
Flash point:
-83 °C
explosive limit
Stable. Extremely flammable. May form explosive mixtures with air.
CAS DataBase Reference
75-28-5(CAS DataBase Reference)
  • Risk and Safety Statements
  • Hazard and Precautionary Statements (GHS)
Hazard Codes  F+
Risk Statements  12
Safety Statements  9-16
RIDADR  UN 1969 2.1
WGK Germany  -
RTECS  TZ4300000
HazardClass  2.1
Signal word: Danger
Hazard statements:
Code Hazard statements Hazard class Category Signal word Pictogram P-Codes
H220 Extremely flammable gas Flammable gases Category 1 Danger P210, P377, P381, P403
H280 Contains gas under pressure; may explode if heated Gases under pressure Compressed gas
Liquefied gas
Dissolved gas
Warning P410+P403
Precautionary statements:
P210 Keep away from heat/sparks/open flames/hot surfaces. — No smoking.
P377 Leaking gas fire: Do not extinguish, unless leak can be stopped safely.
P403 Store in a well-ventilated place.
P410 Protect from sunlight.

ISOBUTANE price More Price(3)

Manufacturer Product number Product description CAS number Packaging Price Updated Buy
Sigma-Aldrich 295450 2-Methylpropane 99% 75-28-5 100g $133.5 2017-11-08 Buy
Sigma-Aldrich 295450 2-Methylpropane 99% 75-28-5 350g $175 2017-11-08 Buy
Sigma-Aldrich 539821 2-Methylpropane 99.995% 75-28-5 170g $492 2017-11-08 Buy

ISOBUTANE Chemical Properties,Uses,Production

Chemical Properties

colourless odourless gas (or colourless cryogenic liquid)


ChEBI: An alkane that is propane substituted by a methyl group at position 2.

General Description

ISOBUTANE is a colorless gas with a faint petroleum-like odor. ISOBUTANE is shipped as a liquefied gas under its vapor pressure. Contact with the liquid can cause frostbite. ISOBUTANE is easily ignited. The vapors are heavier than air. Any leak can either be liquid or vapor. ISOBUTANE can asphyxiate by the displacement of air. Under prolonged exposure to fire or intense heat the containers may rupture violently and rocket.

Air & Water Reactions

Highly flammable.

Reactivity Profile

ISOBUTANE is incompatible with the following: Strong oxidizers (e.g., nitrates & perchlorates), chlorine, fluorine, (nickel carbonyl + oxygen) .

Health Hazard

Central nervous system depression ranging from dizziness and incoordination to anesthesia and respiratory arrest, depending on concentration and extent of inhalation. Irregular heartbeat is rare but is a dangerous complication at anesthetic levels.

Fire Hazard

EXTREMELY FLAMMABLE. Will be easily ignited by heat, sparks or flames. Will form explosive mixtures with air. Vapors from liquefied gas are initially heavier than air and spread along ground. CAUTION: Hydrogen (UN1049), Deuterium (UN1957), Hydrogen, refrigerated liquid (UN1966) and Methane (UN1971) are lighter than air and will rise. Hydrogen and Deuterium fires are difficult to detect since they burn with an invisible flame. Use an alternate method of detection (thermal camera, broom handle, etc.) Vapors may travel to source of ignition and flash back. Cylinders exposed to fire may vent and release flammable gas through pressure relief devices. Containers may explode when heated. Ruptured cylinders may rocket.

Purification Methods

Olefins and moisture can be removed by passage at 65o through a bed of silica-alumina catalyst which has previously been evacuated at about 400o. Alternatively, water and CO2 can be removed by passage through P2O5, then asbestos impregnated with NaOH. Treatment with anhydrous AlBr3 at 0o then removes traces of olefins. Inert gases can be separated by freezing the isobutane at -195o and evacuating out the system. [Beilstein 1 IV 282.]

ISOBUTANE Preparation Products And Raw materials

Raw materials

Preparation Products


Global( 82)Suppliers
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Hangzhou FandaChem Co.,Ltd.
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Mainchem Co., Ltd.
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Fluoropharm Co., Ltd.
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Meryer (Shanghai) Chemical Technology Co., Ltd. +86-(0)21-61259100(Shanghai) +86-(0)755-86170099(ShenZhen) +86-(0)10-62670440(Beijing)
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Secco work (Beijing) chemical technology co., LTD 010-69755668;
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Chengdu XiYa Chemical Technology Co., Ltd. 4008-626-111
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Chengdu Ai Keda Chemical Technology Co., Ltd. 4008-755-333 ; 028-86676798 ; 028-86757656
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Beijing HuaMeiHuLiBiological Chemical 010-56205725;010-86181995
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TCI Japan 03-3668-0489
03-3668-0520 Japan 28607 80

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