4-Chloro-4′-hydroxybenzophenone (CAS 42019-78-3): Comprehensive User Guide
Table of Contents
1. Product Overview & Specifications
4-Chloro-4′-hydroxybenzophenone (CAS 42019-78-3) is a specialty organic compound with the molecular formula C13H9ClO2. Key parameters include:
| Parameter | Value |
|---|---|
| CAS Number | 42019-78-3 |
| Molecular Weight | 244.66 g/mol |
| Appearance | White to off-white crystalline powder |
| Melting Point | 148-152°C |
| Purity | ≥98% (HPLC) |
2. Applications & Use Cases
Widely used in:
- UV Absorbers: Stabilizes polymers and coatings against photodegradation.
- Pharmaceutical Intermediates: Synthesizes bioactive molecules.
- Cosmetics: Enhances sunscreen formulations (blocks UVB/UVA).
3. Industry Case Studies
Case Study 1: Sunscreen Enhancement
Client: EuroCosmetics Ltd. (Spain)
Challenge: Improve SPF durability in a water-resistant sunscreen.
Solution: Added 2% 4-Chloro-4′-hydroxybenzophenone to formulation.
Result: 30% longer UV protection under accelerated testing.
Case Study 2: Polymer Stabilization
Client: GreenPlast Inc. (USA)
Challenge: Reduce yellowing in outdoor PVC products.
Solution: 0.5% additive integration during extrusion.
Result: 50% less discoloration after 1,000 hrs of QUV exposure.
4. Technical Comparison
| Feature | 4-Chloro-4′-hydroxybenzophenone | Standard Benzophenone |
|---|---|---|
| UV Range | 280-350 nm | 250-320 nm |
| Thermal Stability | Up to 200°C | Up to 180°C |
| Solubility in Ethanol | High | Moderate |
5. Contact for Queries
Request custom formulations or technical data sheets:
Email: info@vivalr.com
Phone: (86) 15866781826
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