Description

Isobutane CAS NO 75-28-5 is a highly volatile, colorless, and flammable hydrocarbon gas, also known as 2-methylpropane. It serves as a critical intermediate and propellant in numerous industrial and consumer applications due to its favorable thermodynamic properties and low environmental impact. This compound is essential for manufacturers in the refrigeration, aerosol, and petrochemical sectors, where it is valued for its efficiency and role in producing high-octane gasoline components.

Application

• Primary use as a refrigerant (R-600a) in domestic and commercial cooling systems due to its low global warming potential.
• Key propellant in aerosol products such as personal care sprays, air fresheners, and industrial coatings.
• Important feedstock for the production of high-octane gasoline additives like alkylate via alkylation processes.
• Used as a blowing agent in the manufacture of polystyrene and polyurethane foams.
• Acts as a fuel component in liquefied petroleum gas (LPG) blends for heating and cooking.
• Employed as a solvent and extraction medium in specific chemical processing applications.
• Serves as a calibration standard and reference gas in analytical and laboratory instrumentation.

Basic Information

Product Name	Isobutane
CAS No.	75-28-5
Molecular Formula	C4H10
Molecular Weight	58.12 g/mol
Synonyms	2-Methylpropane; i-Butane; Trimethylmethane; R-600a; LPG; Liquefied Petroleum Gas (component); Methylpropane; UN 1969
EINECS	200-857-2

Quality Control

Our Isobutane is produced and handled under stringent quality management systems to ensure batch-to-batch consistency and reliability. We offer various grades, including industrial and high-purity specifications, to meet diverse application needs. Certificates of Analysis (COA) detailing purity, composition, and critical impurity levels are provided with each shipment and are available upon request to support your quality assurance protocols.

Storage

Store in approved, tightly sealed pressure cylinders or containers in a cool, well-ventilated area away from direct sunlight, heat sources, and ignition points. Due to its highly volatile and flammable nature, storage areas must comply with local regulations for flammable gases. Keep containers tightly closed when not in use.

Specification

Item	Specification
Appearance	Colorless Gas
Identification (IR)	Conforms
Assay (GC)	≥ 99.0% - 99.9%
n-Butane	≤ 1.0%
Propane	≤ 0.5%
Moisture (Karl Fischer)	≤ 10 ppm
Non-volatile Residue	≤ 10 mg/kg
Sulfur Compounds (as H2S)	≤ 1 ppm

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.