Description

3-Methyloctadecane is a high-purity branched alkane, a key chemical intermediate with the CAS registry number 6561-44-0. Its defined molecular structure and consistent quality make it a valuable building block for advanced synthesis and formulation work. This compound is essential for researchers and industrial chemists in sectors requiring precise hydrocarbon components, such as specialty lubricants, polymer modifiers, and advanced material science.

Application

• As a synthetic intermediate in the production of specialty surfactants and detergents.
• Used in the formulation of high-performance synthetic lubricants and functional fluids.
• Acts as a plasticizer and modifier in polymer and rubber manufacturing to alter physical properties.
• Serves as a standard reference material in analytical chemistry and chromatography for calibration.
• Employed in material science research for studying hydrocarbon behavior and surface interactions.
• Potential use as a phase change material (PCM) in thermal energy storage systems.

Basic Information

Product Name	3-Methyloctadecane
CAS No.	6561-44-0
Molecular Formula	C₁₉H₄₀
Molecular Weight	268.52 g/mol
Synonyms	3-Methyloctadecane; Isooctadecane; 3-Methyl-n-octadecane; 3-Methylicosane (common misnomer); C19 branched alkane; NSC 74144; 1,1-Dimethylheptadecane (structural isomer)
EINECS	Contact for details

Quality Control

Our 3-Methyloctadecane is manufactured under stringent quality management systems. Each batch undergoes comprehensive analytical testing, including gas chromatography (GC) for purity and identity confirmation, to ensure it meets exacting standards for research and industrial use. A detailed Certificate of Analysis (COA) is provided with every shipment, guaranteeing traceability and consistent quality.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). Keep away from strong oxidizing agents and heat sources.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Assay (GC)	≥ 97.0%
Boiling Point	~330-340 °C
Density (at 20°C)	~0.78 g/mL
Refractive Index (n20D)	~1.43

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