Pharmaceutical Materials

CAS Number: 536-78-7

Molecular Formula: C7H9N

Molecular Weight: 107.153 g/mol

Appearance: Colorless to brown liquid

Melting Point: -77°C

Boiling Point: 165.8°C

Density: 0.954 g/mL

Usage: Utilized as an intermediate in organic synthesis.

3-Ethylpyridine, with the CAS number 536-78-7, is an organic compound characterized by its molecular formula C₇H₉N and a molecular weight of 107.15 g/mol. It appears as a colorless to brown liquid, possessing a distinct odor reminiscent of tobacco, oakmoss, and leather. This compound exhibits good solubility in water, ethanol, ether, and especially acetone. Its physical properties include a melting point of -77°C, a boiling point ranging from 163°C to 166°C, a density of 0.954 g/mL at 25°C, and a refractive index of 1.502. Additionally, it has a flash point of 49°C, indicating its flammability.

Property	Description
Physical Properties
Appearance	Colorless to brown liquid
Odor	Characteristic (tobacco, oakmoss, leather)
Melting Point	-77°C
Boiling Point	163-166°C
Density	0.954 g/mL at 25°C
Refractive Index	1.502
Flash Point	49°C
Solubility	Soluble in water, ethanol, ether; freely soluble in acetone
Molecular Formula	C₇H₉N
Molecular Weight	107.15 g/mol
Stability	Stable under normal conditions; incompatible with strong oxidizers and acids
Applications	Organic synthesis intermediate; flavor additive in food industry
Hazard Classification	Xi (irritant); may cause eye, skin, and respiratory irritation; flammable

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