4,4′-Bis(diethylamino)benzophenone
4,4′-Bis(diethylamino)benzophenone (CAS 90-93-7) is a benzophenone derivative with the molecular formula [(C2H5)2NC6H4]2CO and a molecular weight of 324.46 g/mol. This compound functions as a critical amine photochemical coinitiator. It finds primary application in photopolymerization processes, particularly in UV-curable coatings, inks, and adhesives, where it efficiently initiates radical polymerization upon exposure to UV light.
- Synonyms
- [(C2H5)2NC6H4]2COMichler's ketone
![4,4′-Bis(diethylamino)benzophenone ([(C2H5)2NC6H4]2CO) — chemical structure, CAS 90-93-7; Materials Science, fine chemical supplied by Tech Serve Solutions](/_next/image?url=https%3A%2F%2Fpub-f4d920c906024441a773a96f7098e551.r2.dev%2Fimages%2Fproducts%2F90-93-7.png&w=3840&q=75)
Photopolymerization Initiator
As a highly effective Type II photoinitiator, it is widely used in UV-curing applications. It works synergistically with other components to initiate rapid polymerization when exposed to ultraviolet light, crucial for coatings and inks.
UV-Curable Coatings
This compound is a key component in the formulation of UV-curable coatings, providing rapid curing and excellent film properties. It is integral to industrial finishing processes for wood, plastics, and metals.
Printing Inks
It serves as a photoinitiator in UV-curable printing inks, enabling fast drying times and high-quality print finishes. Its efficiency contributes to high-speed printing operations.
Adhesives
In UV-curable adhesive formulations, it facilitates rapid bonding upon UV exposure. This is vital for assembly processes in electronics and other manufacturing sectors requiring fast, precise adhesion.
| Molecular weight | 324.46 |
|---|---|
| Linear formula | [(C2H5)2NC6H4]2CO |
| Assay | ≥99% |
| Melting point | 89-92 °C(lit.) |
Hazard statements
- H315Causes skin irritation
- H319Causes serious eye irritation
- H335May cause respiratory irritation
- H400Very toxic to aquatic life
Precautionary statements
- P261Avoid breathing dust, fume, gas or vapours
- P273Avoid release to the environment
- P305IF IN EYES
| Protective equipment | dust mask type N95 (US), Eyeshields, Gloves |
|---|---|
| Flash point | 151 °C / 303.8 °F |
| Transport (UN / ADR) | UN 3077 9 / PGIII |
| Water hazard class (WGK, DE) | 2 |
| Hazard codes (EU) | Xi,N |
| Risk statements (R) | 36/37/38-50/53 |
| Safety statements (S) | 26-60-61 |
Hazard information is provided for guidance. Always consult the product Safety Data Sheet (SDS), available on request, before handling.
Documentation
Every batch ships with a Certificate of Analysis covering assay, identity and purity; the grade is confirmed against your enquiry. Safety Data Sheets and technical data sheets are available on request.
Supply & logistics
Samples for technical evaluation; bulk MOQ by grade and packaging. In-stock material ships in 7–10 working days, worldwide, with full export documentation.
What is 4,4′-Bis(diethylamino)benzophenone used for?
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4,4′-Bis(diethylamino)benzophenone (CAS 90-93-7) is primarily used as an amine photochemical coinitiator in UV-curable systems, including coatings, inks, and adhesives, to initiate polymerization.
What are the CAS number and formula for 4,4′-Bis(diethylamino)benzophenone?
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The CAS number for 4,4′-Bis(diethylamino)benzophenone is 90-93-7. Its linear formula is [(C2H5)2NC6H4]2CO.
What grade and purity does Tech Serve Solutions supply for 4,4′-Bis(diethylamino)benzophenone?
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Tech Serve Solutions supplies 4,4′-Bis(diethylamino)benzophenone with an assay of ≥99%. We do not represent this product as USP, BP, or EP grade.
How should 4,4′-Bis(diethylamino)benzophenone be handled safely?
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This compound is classified as a skin, eye, and respiratory irritant (H315, H319, H335) and is very toxic to aquatic life with long-lasting effects (H400). When handling, use a dust mask type N95, eyeshields, and gloves. Ensure adequate ventilation and avoid release into the environment. Follow precautionary statements P261, P273, and P305 + P351 + P338.
Is 4,4′-Bis(diethylamino)benzophenone a controlled substance?
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Based on the provided data, 4,4′-Bis(diethylamino)benzophenone (CAS 90-93-7) is not indicated as a controlled substance.
How is 4,4′-Bis(diethylamino)benzophenone shipped and exported?
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4,4′-Bis(diethylamino)benzophenone is shipped and exported according to relevant regulations, including UN 3077, Class 9, Packing Group III, for environmentally hazardous substances.
How can I request a quote or sample for 4,4′-Bis(diethylamino)benzophenone?
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To request a quote or a sample of 4,4′-Bis(diethylamino)benzophenone, please contact our sales department through the TSS website or by calling our customer service line.
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