Octadecane

CAS 593-45-3CH3(CH2)16CH3Chemical Synthesis

Octadecane (CAS 593-45-3), a saturated acyclic hydrocarbon with the formula CH3(CH2)16CH3, is a long-chain alkane with a molecular weight of 254.49 g/mol. It exists as a waxy solid at room temperature. Octadecane serves as a valuable building block in organic synthesis and finds applications in various chemical research fields. Its properties make it suitable for use in studies related to lipid bilayers and as a standard in thermal analysis.

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Octadecane (CH3(CH2)16CH3) — chemical structure, CAS 593-45-3; Chemistry, fine chemical supplied by Tech Serve Solutions

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01 /Applications

Organic Synthesis

Octadecane is utilized as a fundamental building block in organic chemistry. Its long hydrocarbon chain can be functionalised or incorporated into larger molecules, contributing to the synthesis of complex organic compounds and materials.

Research and Development

This alkane is employed in various scientific research settings. It can serve as a reference compound in analytical techniques like gas chromatography or as a component in studies investigating phase transitions and material properties.

Thermal Analysis Standard

Due to its well-defined melting and boiling points, Octadecane can be used as a calibration standard in thermal analysis techniques such as differential scanning calorimetry (DSC) and thermogravimetric analysis (TGA).

02 /Properties

Molecular weight	254.49
Linear formula	CH3(CH2)16CH3
Assay	99%
Boiling point	317 °C(lit.)
Density	0.777 g/mL at 25 °C(lit.)
Vapour pressure	1 mmHg (119 °C)
Vapour density	8.8 (vs air)
Melting point	26-29 °C(lit.)
Autoignition temp	455 °F

03 /Safety & handling

GHS hazard pictogram: Health hazard (GHS08) — Health hazard

Danger

Hazard statements

H304May be fatal if swallowed and enters airways

Precautionary statements

P301IF SWALLOWED
P331Do NOT induce vomiting

Protective equipment	dust mask type N95 (US), Eyeshields, Gloves
Flash point	166 °C / 330.8 °F
Water hazard class (WGK, DE)	3
Hazard codes (EU)	Xn
Risk statements (R)	65-66
Safety statements (S)	23-24-62

Hazard information is provided for guidance. Always consult the product Safety Data Sheet (SDS), available on request, before handling.

04 /Identifiers & registry

CAS number

593-45-3

MDL number

MFCD00009007

PubChem substance

24898037

Beilstein registry

1740138

05 /Quality & supply

Documentation

Every batch ships with a Certificate of Analysis covering assay, identity and purity; the grade is confirmed against your enquiry. Safety Data Sheets and technical data sheets are available on request.

Supply & logistics

Samples for technical evaluation; bulk MOQ by grade and packaging. In-stock material ships in 7–10 working days, worldwide, with full export documentation.

06 /Frequently asked questions

What is Octadecane primarily used for?

Octadecane is used as a building block in organic synthesis, in research and development for analytical standards, and in thermal analysis.

What is the CAS number and chemical formula for Octadecane?

The CAS number for Octadecane is 593-45-3 and its chemical formula is CH3(CH2)16CH3.

What grade and purity does Tech Serve Solutions supply?

Tech Serve Solutions supplies Octadecane with a minimum assay of 99%. We do not represent this product as USP, BP, EP, or other pharmacopoeial grades unless explicitly stated.

How should Octadecane be handled safely?

Octadecane can cause lung damage if swallowed or inhaled (H304). Handle with appropriate personal protective equipment, including a dust mask (N95), eyeshields, and gloves. Avoid ingestion and inhalation. It has a high flash point of 166 °C (330.8 °F).