7-Diethylamino-4-methylcoumarin

Product Identification

Chemical Name: 7-(Diethylamino)-4-methyl-2H-1-benzopyran-2-one
Synonyms:

Coumarin 1Fluorescent Brightener 52/140Optical Whitener SWNLeucophor WS
Molecular Formula: C₁₄H₁₇NO₂
Molecular Weight: 231.29 g/mol
CAS No.: 91-44-1
EINECS: 202-068-9

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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

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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

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Applications

Textiles & Plastics:Optical brightener for polyester, nylon, and PVCDetergents:Fluorescent whitening agent in laundry formulationsSecurity Inks:Anti-counterfeiting marker for banknotes and documentsBiotechnology:Fluorescent probe for cellular imaging

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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

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Safety & Handling

GHS Classification:H315 (Causes skin irritation)H319 (Causes serious eye irritation)Recommended PPE: Nitrile gloves, safety gogglesEnvironmental Note: Biodegradability >60% (OECD 301B)

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