Menthol Crystals USP/BP
Synthetic racemic menthol in crystalline form, conforming to USP and BP pharmacopoeial standards. Composed of a 1:1 mixture of D-menthol and L-menthol enantiomers, with specific optical rotation between −2° and 2°, indicating optical inactivity. These crystals are white or colorless with a characteristic peppermint aroma and mild cooling effect (~50% intensity compared to pure L-menthol). Exhibits melting points of 28 °C or 38 °C due to dual crystal forms. Very slightly soluble in water, readily soluble in ethanol, volatile oils, and other organic solvents. Used in topical analgesics, lozenges, decongestants, oral care, cosmetics, food, and industrial applications. Manufactured synthetically under GMP conditions and intended for cost-effective formulations not requiring full L-menthol potency.
Product Specifications
Chemical Name | DL-Menthol (Racemic Menthol) |
Synonyms | (±)-Menthol, dl-Menthol, Mentholum racemicum |
CAS Number | 89-78-1 / 1490-04-6 |
Molecular Formula | C₁₀H₂₀O |
Specific Rotation | −2° to 2° (optically inactive) |
Melting Point | 28 °C or 38 °C |
Appearance | White crystalline powder or colorless needle-like crystals |
Odor | Characteristic peppermint |
Solubility | Slight in water; readily soluble in ethanol and oils |
Origin | Synthetic |
Applications and Benefits:
- Topical formulations: creams, gels, ointments
- Throat lozenges and nasal inhalers
- Chewing gum, candies, and flavorings
- Toothpaste and mouthwash
- Shampoos, body washes, and lotions
- Cigarette and tobacco flavoring
- Cooling agents and fragrance intermediates
Caution:
Avoid contact with eyes, skin, and mucous membranes. May cause irritation. Use with proper ventilation and personal protection. Store in a dry, cool area in tightly closed containers between 15 °C and 30 °C. Do not substitute for L-menthol in formulations requiring pure enantiomer. Keep away from oxidizing agents, acids, bases, and ignition sources.