Technical Guide: 2,4-Diaminophenoxyethanol HCl (CAS 66422-95-5)
Table of Contents
- 1. Product Specifications & Comparative Analysis
- 2. Industrial Applications
- 3. Operational Guidelines
- 4. Case Studies
- 5. Client Success Stories
- 6. Request Quotation
1. Product Specifications & Comparative Analysis
| Parameter | 2,4-Diaminophenoxyethanol HCl | Alternative Hair Dye Intermediates |
|---|---|---|
| CAS Number | 66422-95-5 | 137-09-7 (2,4-Diaminophenol HCl) |
| Molecular Formula | C8H12Cl2N2O2 | C6H8ClN3O |
| Appearance | White/grey crystalline powder | Brown powder |
| Melting Point | ≥222°C | 245-250°C |
| Max Concentration in Hair Dyes | 4.0% (2.0% with oxidizer) | 10.0% |
2. Industrial Applications
This phenylenediamine derivative serves as:
- Primary Oxidative Hair Colorant: Enables long-lasting color formation through coupling reactions with intermediates
- Permanent Hair Dye Component: Provides natural-looking shades from ash blonde to dark brown
- Cosmetic Additive: Offers superior gray coverage compared to p-phenylenediamine
- Research Chemical: Used in organic synthesis of specialty polymers
3. Operational Guidelines
Formulation Recommendations:
- Optimal pH range: 8.5-10.2
- Combination ratio with couplers: 1:2 to 1:4
- Oxidizer compatibility: Hydrogen peroxide (3-6% w/v)
- Accelerated stability testing shows ≤5% degradation at 40°C/75% RH over 12 months
4. Case Studies
Case 1: European Salon Brand Reformulation
- Challenge: Reduce skin irritation while maintaining color vibrancy
- Solution: 1.8% 2,4-Diaminophenoxyethanol HCl with antioxidant complex
- Result: 37% reduction in adverse reactions, ISO 11930 compliance achieved
5. Client Success Stories
Client A: Asian Cosmetic Manufacturer
- Application: Ammonia-free hair color system
- Volume: 12 metric tons/year
- Performance: Achieved 98% gray coverage in 25 minutes processing time
Client B: North American Private Label
- Application: Semi-permanent conditioning color
- Formulation: 0.5% active concentration with argan oil base
- Market Impact: 22% market share gain in professional salon segment
6. Request Quotation
For technical specifications sheets, regulatory documentation, or bulk pricing:
- Email: info@vivalr.com
- Phone: (86) 15866781826
Provide your requirements:
- Target application
- Required purity grade (98-99.5%)
- Packaging specifications (1-25kg)



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