Table 1.

Aqueous solubilities according to the U.S. Pharmacopoeia.

Freely Soluble	100–1000 mg/mL
Soluble	33–100 mg/mL
Sparingly soluble	10–33 mg/mL
Slightly soluble	1–10 mg/mL
Very slightly soluble	0.1–1 mg/mL
Practically insoluble	<0.1 mg/mL