7-Diethylamino-4-methylcoumarin
Chemical Intermediates 2025-03-19
Product Identification
Chemical Name: 7-(Diethylamino)-4-methyl-2H-1-benzopyran-2-one
Synonyms:
- Coumarin 1
- Fluorescent Brightener 52/140
- Optical Whitener SWN
- Leucophor WS
Molecular Formula: C₁₄H₁₇NO₂
Molecular Weight: 231.29 g/mol
CAS No.: 91-44-1
EINECS: 202-068-9
Product Specifications
| Parameter | Specification |
|---|---|
| Appearance | White to off-white crystalline powder |
| Purity (HPLC) | ≥99% |
| Melting Point | 70–73°C |
| Flash Point | 152°C |
| Density | 1.122 g/cm³ (20°C) |
| Water Solubility | Slightly soluble (0.1–1 g/L) |
| Production Capacity | 200 metric tons/year |
| Minimum Order | 1 kg |
Key Properties
- Fluorescence: Strong blue emission (~430–450 nm under UV)
- Stability: Photostable in polymers, pH-resistant (3–10)
- Compatibility: Dispersible in plastics, coatings, and detergents
Applications
- Textiles & Plastics:
- Optical brightener for polyester, nylon, and PVC
- Detergents:
- Fluorescent whitening agent in laundry formulations
- Security Inks:
- Anti-counterfeiting marker for banknotes and documents
- Biotechnology:
- Fluorescent probe for cellular imaging
Packaging & Storage
| Size | Packaging | Storage Conditions |
|---|---|---|
| 1 kg | Foil-lined HDPE bag | ≤25°C, dry, avoid light |
| 25 kg | Fiber drum with desiccant | Ventilated warehouse |
| Bulk (>100 kg) | Customized packaging | Temperature-controlled |
Safety & Handling
- GHS Classification:
- H315 (Causes skin irritation)
- H319 (Causes serious eye irritation)
- Recommended PPE: Nitrile gloves, safety goggles
- Environmental Note: Biodegradability >60% (OECD 301B)
