CAS Number:
38083-17-9
Chemical Name:
Climbazole. Also known as 1-(4-chlorophenoxy)-1-(imidazol-1-yl)-3,3-dimethylbutan-2-one
Molecular Formula:
C15H17ClN2O2
Molecular Weight:
292.76 g/mol
Common Form:
White to off-white or pale yellow crystalline powder
EC Number:
253-775-4
Uses:
Climbazole is a broad-spectrum antifungal agent primarily used in personal care products and topical treatments. Its chemical structure and properties are similar to other azole fungicides such as ketoconazole, clotrimazole, and miconazole .
Primary Applications:
· Anti-Dandruff & Scalp Treatments: The most common application. Highly effective against Malassezia spp. (formerly Pityrosporum ovale), the fungus that plays a key role in the pathogenesis of dandruff and seborrheic dermatitis . Used in shampoos, conditioners, and scalp tonics.
· Cosmetic Preservative: Acts as a preservative in personal care products to prevent microbial growth and ensure formulation stability .
· Topical Antifungal Treatments: Used to treat human fungal skin infections such as eczema and dermatophytosis .
· Veterinary Medicine: Employed in pet care products to manage fungal infections in animals .
· Industrial Applications: Used in coatings and plastics to provide protection against fungal contamination, enhancing product durability in humid environments .
What does Climbazole do in a formulation?
- Antifungal Agent: Kills and stops the growth of fungi by inhibiting sterol demethylation (ergosterol biosynthesis inhibitor), thereby destroying the fungal cell membrane .
- Preservative: Prevents microbial contamination and extends the shelf life of cosmetic and personal care products .
- Biofilm Disruptor: Inhibits fungal biofilm formation, enhancing its efficacy against persistent fungal infections.
- Keratinocyte Modulator: Increases expression of cornified envelope proteins in primary keratinocytes, contributing to improved skin barrier function .
Safety Profile:
· Hazard Classification: Harmful if swallowed (H302) . Causes skin irritation and serious eye irritation . Not classified as flammable in pure form .
· Skin/Eye Contact: Irritating to skin and eyes. Causes severe eye irritation. In case of contact, flush immediately with plenty of water for at least 15 minutes .
· Inhalation: Harmful if inhaled. May cause respiratory tract irritation. Remove to fresh air .
· Ingestion: Harmful if swallowed. Do not induce vomiting; seek medical attention .
· Environmental Impact: Moderately toxic to fish and honeybees. Can be persistent in soil systems, especially in biosolid-amended soils . Potential environmental contaminant .
· Required PPE: Safety goggles, chemical-resistant gloves, dust mask (N95). Use in well-ventilated areas .
· Storage Conditions: Store at +2 to +8 °C (refrigerated) . Protect from light and moisture. Keep container tightly closed .
· Shelf Life: 24 months when stored properly under recommended conditions.
Technical profile:
| Property | Values |
| Appearance | White to off-white or pale yellow crystalline powder |
| Purity | ≥ 98% (HPLC, titration) |
| Melting Point | 95.5 - 100 °C (range across sources) |
| Boiling Point | 260 °C to 412 °C (decomposes before boiling at atmospheric pressure) |
| Density | 1.17 - 1.32 g/cm³ |
| Solubility in Water | Low solubility - 8.28 mg/L at 20°C |
| Solubility in Organics | Miscible in isopropanol and cyclohexane; 550 mg/L in benzyl alcohol |
| Log P (Octanol-Water Partition Coefficient) | 3.76 to 3.7 - High lipophilicity |
| pKa | 7.5 at 25°C |
| Flash Point | 100 °C to 224.4 °C |
| XLogP3-AA | 3.7 |
| Hydrogen Bond Donor Count | 0 |
| Hydrogen Bond Acceptor Count | 3 |
| Rotatable Bond Count | 5 |
| Topological Polar Surface Area | 44.1 Ų |
| FRAC Mode of Action Class | 3 (Sterol Demethylation Inhibitor) |
| Common Commercial Names | Crinipan AD, Baypival, Baysan |