1. Basic Identification Information

Parameter	English Specification/Value
IUPAC Name	Dodecane (systematic name: n-dodecane)
Common Name(s)	n-Dodecane; Dodecane; n-C₁₂; Laurane; Alkane C12
CAS Registry Number	112-40-3
EC/EINECS Number	203-967-9
Molecular Formula	C₁₂H₂₆
Molecular Weight	170.34 g/mol
Chemical Class	Straight-chain aliphatic alkane; hydrocarbon solvent; fuel component; emollient base stock
Related Compound	n-Undecane (CAS 1120-21-4) (C11 alkane, lower boiling point); n-Tridecane (CAS 629-50-5) (C13 alkane, higher viscosity); Iso-dodecane (CAS 31807-55-3) (branched isomer, better skin spreadability for cosmetics)

2. Physicochemical Properties

Property Category	Specific Parameter	Specification/Value
Structural Features	Functional Groups	Saturated C-C single bonds; no polar functional groups (non-polar, hydrophobic structure with linear alkyl chain)
Physical Appearance	State & Color	Colorless, clear, mobile liquid; odorless (high-purity grade) or faint hydrocarbon odor (technical grade); waxy solid at low temperatures
	Melting Point	-9.6 °C (lit.) (solidifies below this temperature into waxy crystals)
	Boiling Point	216.3 °C (lit.); forms azeotropes with polar solvents (e.g., ethanol, boiling point 117 °C at 5% n-dodecane)
	Density (25 °C)	0.748 g/cm³