Acetylsalicylic Acid
- CAS NO. : 50-78-2
- CAT NO. : PH-API-0782
Physical State: Solid (powder)
Color: White
Appearance: Crystalline powder
Melting Point: 134–136 °C (literature)
Boiling Point: ~140 °C at 20 mmHg (decomposes; not stable at high temp)
Density: ~1.40 g/cm³ (literature)
Flash Point: ~230 °C (estimated, closed cup)
Storage Conditions: Store at 2–8 °C, in a tightly closed container, protected from moisture
Solubility:
Water: Slightly soluble (~3 mg/mL at 20 °C)
Ethanol: Freely soluble
Ether: Slightly soluble
Chloroform: Soluble
pKa: 3.49 (carboxyl group, experimental)
Molecular Formula: C₉H₈O₄
Molecular Weight: 180.16 g/mol
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