Didecyldimethylammonium Chloride-CAS 7173-51-5
Product Name: Didecyldimethylammonium Chloride
Abbreviation: DDAC
INCI Name: Didecyldimethylammonium Chloride
CAS No.: 7173-51-5
Grade: Cosmetic Premium Grade (Mild & High Efficiency Sterilization)
Active Content: 40.0%±1.0%
Appearance: Colorless to Light Yellow Transparent Liquid, No Stratification, No Precipitation, Slight Characteristic Odor
Molecular Formula: C₂₂H₄₈ClN
Molecular Weight: 362.08
MOQ (Minimum Order Quantity): 25KG
Solubility: Easily soluble in water and polar solvents, fast dissolution, clear aqueous solution; excellent compatibility with most non-ionic and amphoteric surfactants, stable in neutral and weak alkaline systems
Core Efficacy: Broad-spectrum bactericidal and antibacterial, efficient mold inhibition, long-term antisepsis and preservation, remove peculiar smell, stabilize product system, prevent microbial deterioration of cosmetics
Key Characteristics: Double alkyl quaternary ammonium salt structure, high sterilization efficiency, low dosage and long duration, mild and low irritation, no formaldehyde, no residual odor, stable high and low temperature resistance, not easy to produce drug resistance
Storage Condition: Sealed and stored in dry, cool and ventilated warehouse, avoid high temperature, strong light and freezing environment; keep tightly sealed after opening to prevent volatile loss and impurity contamination
Shelf Life: 24 Months
Application: Widely used in cosmetic preservative systems, antibacterial skin care products, facial cleansers, body washes, wet wipes, personal care disinfection products and daily chemical antibacterial and anti-mold formulas
Didecyldimethylammonium Chloride, DDAC, Cosmetic Grade DDAC, Quaternary Ammonium Salt Bactericide, Mild Antiseptic, Anti-mold Preservative, Cosmetic Disinfectant, Personal Care Antibacterial Raw Material
Didecyldimethylammonium Chloride-CAS 7173-51-5
Cosmetic Grade Didecyldimethylammonium Chloride (DDAC) is a high-efficiency, mild and broad-spectrum quaternary ammonium salt bactericidal preservative, specially refined for cosmetic and personal care product safety systems.
Different from traditional high-irritation preservatives such as parabens and formaldehyde releasers, DDAC adopts advanced double decyl quaternary ammonium salt structure, which can efficiently destroy the cell membrane structure of bacteria, fungi and molds, inhibit microbial protein synthesis and reproduction, and achieve rapid and long-term bactericidal and anti-mold effects.
It has ultra-high antibacterial activity against common cosmetic contaminating microorganisms such as Escherichia coli, Staphylococcus aureus, Candida albicans and Aspergillus niger. The product features low dosage, high efficiency, no formaldehyde, no heavy metals, no peculiar smell residue, mild skin-friendly property and low irritation.
It has good stability in wide temperature and pH range, will not affect the color, fragrance and viscosity of cosmetic finished products, and can perfectly cooperate with traditional preservative systems to achieve synergistic preservation. It solves the pain points of traditional preservatives such as single bactericidal spectrum, strong irritation and easy deterioration. It is a safe and efficient core antibacterial preservative raw material for high-end clean beauty cosmetics and mild personal care products.
Key Benefits
• Broad-Spectrum Sterilization & Long-Term Preservation: Effectively inhibit and kill bacteria, fungi, molds and yeasts, cover all common cosmetic spoilage microorganisms, prevent product deterioration and mildew, and greatly extend shelf life.
• Mild & Low Irritation, High Safety: Formaldehyde-free, heavy metal-free and non-toxic residue, far milder than traditional preservatives, no skin irritation or sensitization, suitable for sensitive skin and mild clean beauty formulas.
• Low Dosage & High Efficiency, Cost-Saving: Excellent antibacterial activity with ultra-low addition amount, obvious synergistic effect with other preservatives, reduce formula cost while ensuring preservation effect.
• Stable Formula & No Influence on Product Quality: Excellent high and low temperature resistance and pH stability, no discoloration, no odor, no viscosity change after addition, perfectly retain the original texture and efficacy of cosmetics.
• Anti-Drug Resistance & Durable Efficacy: Unique molecular sterilization mechanism, microorganisms are not easy to produce drug resistance, long-term stable antibacterial and anti-mold effect, suitable for long-term shelf storage of finished products.
• Excellent Compatibility & Wide Adaptability: Perfectly compatible with nonionic, amphoteric surfactants and most cosmetic active ingredients, suitable for water-based and mild compound cosmetic systems.
Applications
• Cosmetic Antiseptic & Preservation System: Core preservative and antibacterial agent for facial lotion, moisturizing cream, essence, facial mask and skin care water, prevent microbial contamination and stabilize product quality.
• Mild Cleansing Skin Care Products: Widely used in antibacterial facial cleanser, oil-control body wash, mild cleansing milk and daily cleansing products, achieve cleansing and antibacterial dual effects.
• Personal Care Disinfection Products: Suitable for antibacterial hand sanitizer, disinfection spray, wet wipes and private care products, mild disinfection without irritation, safe for daily contact.
• Low-Irritation Clean Beauty Formula: Replace traditional irritating preservatives, used in zero-addition and mild high-end skin care products, improve product safety and grade.
• Daily Chemical Anti-Mold Products: Applied in household mild antibacterial cleaning products, effectively inhibit mold and bacterial growth, keep products fresh and stable for a long time.
• Special Functional Skin Care Products: Added in oil-control, anti-acne and soothing skin care formulas, assist in inhibiting facial harmful bacteria, improve skin microenvironment.
Certificate Of Analysis (COA)
Test Item | Standard Specification | Test Result |
Product Name | Didecyldimethylammonium Chloride | Compliant |
CAS No. | 7173-51-5 | Compliant |
Appearance | Colorless to Light Yellow Transparent Liquid | Compliant |
Active Substance Content | 40.0%±1.0% | 39.8% |
pH Value (1% Solution, 25℃) | 6.0~8.0 | 7.2 |
Water Insoluble Matter | ≤0.1% | 0.02% |
Heavy Metal (Pb) | ≤1ppm | 0.2ppm |
Arsenic (As) | ≤0.5ppm | 0.1ppm |
Formaldehyde Content | Undetectable | Not Detected |
Microorganism | ≤100CFU/g, No Pathogenic Bacteria | Qualified |
Conclusion | Conforms to cosmetic grade quality standard | Qualified |
Frequently Asked Questions (FAQ)
• Q1: What is the MOQ of DDAC?
A1: The standard MOQ is 25KG, and sample orders are supported for formula testing and antibacterial efficacy trial production.
• Q2: What certification documents can be provided?
A2: Complete COA, MSDS, heavy metal and microbial test reports and full set of customs clearance documents are available to support export declaration and cosmetic product filing.
• Q3: What is the recommended dosage in cosmetic formulas?
A3: Conventional addition dosage is 0.05%-0.2% for skin care products; 0.1%-0.3% for cleansing and antibacterial disinfection products, adjustable according to anti-mold and antibacterial requirements.
• Q4: Is DDAC formaldehyde-free and safe?
A4: Yes, cosmetic grade DDAC contains no formaldehyde, no harmful heavy metals, no toxic residues, mild and non-irritating, fully compliant with global cosmetic safety standards.
• Q5: Can it be compounded with other preservatives?
A5: Absolutely yes, it can be compounded with most cosmetic preservatives and non-ionic/amphoteric surfactants to achieve synergistic antibacterial and anti-mold effects and improve system stability.
• Q6: Will it irritate sensitive skin?
A6: The product is highly purified cosmetic grade with ultra-low irritation, no sensitization, mild bactericidal performance, safe for sensitive skin and long-term use in personal care products.
• Q7: Do you support stable large-batch supply all year round?
A7: Standardized production lines ensure sufficient inventory and stable annual output, supporting long-term cooperative orders and customized formula matching services.
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