Buying Minoxidil USP Powder in Bulk: Grade, Particle Size and Documents

Minoxidil is the active ingredient in many topical hair-care products, and manufacturers buy it as a fine white crystalline powder in bulk. Getting the right material means specifying the grade, checking the physical properties that affect manufacturing, and comparing quotes on the same basis.

Specify the grade

For regulated finished products, specify minoxidil to the current USP (or EP) monograph. The monograph fixes identification, assay, related substances, loss on drying and residue on ignition. Ask for a Certificate of Analysis that names the monograph and reports every test.

Physical properties that matter in manufacturing

• Solubility: minoxidil is only slightly soluble in water; formulations usually rely on propylene glycol and ethanol
• Particle size: finer, consistent particle size dissolves faster and more reproducibly
• Appearance and colour: a white to off-white powder; colour changes can indicate degradation

Documents to request

• Specification and batch Certificate of Analysis
• Safety Data Sheet
• Residual-solvent and elemental-impurity statements
• Retest period and storage conditions

Comparing prices per kg

Minoxidil is widely produced, so price differences usually reflect grade, documentation, batch size and delivery terms rather than the molecule itself. Compare quotes against the same specification, quantity and Incoterm. The current price per kilogram for minoxidil USP is shown on its product page.

Related hair-care APIs

Manufacturers of hair-care ranges often also source finasteride and dutasteride; both are available in bulk at a minimum of 99.0% purity with batch COA and SDS.