Caffeine (C₈H₁₀N₄O₂) — Properties, Uses & Safety

Overview

The world's most widely consumed psychoactive substance, found naturally in coffee, tea, and cacao.

IUPAC Name

1,3,7-trimethyl-3,7-dihydro-1H-purine-2,6-dione

CAS Number

58-08-2

PubChem CID

2519

Molecular Formula

C₈H₁₀N₄O₂

Molar Mass

194.19 g/mol

State at STP

solid

Appearance

White crystalline powder, odorless, bitter taste

Physical Properties

Melting Point

235 °C

Density

1.23 g/cm³

Solubility in Water

22 g/L at 25 °C

Composition