- ▸ Liquid Type I acetophenone-derivative photoinitiator for cure of clear UV coatings (Coatings & Construction)
- ▸ Liquid initiator for UV inks, varnishes and adhesive primers (Industrial Manufacturing)
- ▸ Cures clear UV-curable adhesives and plastics (Plastics & Polymers)
A grade-specific Safety Data Sheet (SDS) — with the complete hazard classification, handling precautions, and transport information — is supplied with every shipment and available on request. Confirm all safety and regulatory details against the SDS for your specific grade.
Request SDS →
2,2-Diethoxyacetophenone (DEAP) is a liquid Type I cleavage photoinitiator of the dialkoxyacetophenone class. It cleaves under UV into radicals for surface cure of clear systems and, as a liquid, is easy to handle — an economical clear-coat initiator. Identity: CAS 6175-45-7.
What it is
2,2-Diethoxyacetophenone (CAS 6175-45-7) is a diethoxy-acetophenone, a clear liquid. It is one of the early Type I cleavage initiators, valued for liquid handling and low cost in clear systems.
How it cures
A Type I initiator: on UV absorption it undergoes alpha-cleavage into two radicals that initiate polymerization directly — no amine synergist needed. It gives good surface cure of clear films but is less efficient and more yellowing-prone than modern hydroxyketones.
Applications
Used for surface cure of clear UV coatings, adhesives and printing systems, often where a low-cost liquid Type I initiator is acceptable. For higher performance/lower yellowing compare 1173 and 184; pair with TPO for through cure.
Forms, grades and handling
DEAP is supplied as a clear liquid. Photoinitiators are light-sensitive — store cool, dry and dark, away from light and ignition sources. Handle per the current Safety Data Sheet (SDS); each lot ships with a Certificate of Analysis (CoA) and Technical Data Sheet (TDS).
Bulk supply and RFQ
RawSource sources 2,2-Diethoxyacetophenone direct from producers in bulk, with CoA, TDS and SDS per lot. Tell us your lamp (mercury or LED wavelength), system (clear or pigmented) and cure target, and we will quote the right grade. Compare the full range and selection logic in the photoinitiators guide.
Typical Properties
Typical reference values, not a specification; the Certificate of Analysis (CoA) for the lot governs.
| Property | Typical Value |
|---|---|
| Chemical / type | Photoinitiator (Type I, dialkoxyacetophenone) |
| Photoinitiator type | Type I (cleavage), dialkoxyacetophenone |
| Absorption | UV (mercury-lamp range) |
| CAS Number | 6175-45-7 |
| Molecular Formula | C12H16O3 |
| Molecular Weight | 208.25 g/mol |
| Handling | Light-sensitive; refer to the current SDS |
Regulatory & registration requirements
- TSCA (US):
- REACH (EU): Not determined from public registry
- EC number: 228-220-4
Source: EPA TSCA Inventory (July 2025 release) · ECHA CHEM — retrieved 2026-07-12
Frequently Asked Questions
What is 2,2-diethoxyacetophenone used for?
DEAP (CAS 6175-45-7) is a liquid Type I cleavage photoinitiator for surface cure of clear UV coatings and adhesives; it needs no amine synergist but is more yellowing-prone than modern hydroxyketones like 184/1173.
Does DEAP need an amine synergist?
No — as a Type I cleavage initiator it generates radicals directly on photolysis and does not require an amine co-initiator.
How is bulk 2,2-diethoxyacetophenone supplied and quoted?
RawSource supplies 2,2-diethoxyacetophenone in bulk with CoA, TDS and SDS per lot. Pricing is quote-based on grade and volume; submit an RFQ with your target quantity.
What is the REACH and TSCA regulatory status of 2,2-Diethoxyacetophenone (DEAP)?
2,2-Diethoxyacetophenone (DEAP) (CAS 6175-45-7) is listed as Active on the U.S. EPA TSCA Inventory; its REACH registration status is not determined from the public ECHA registry.