Deuteron® UV 2257 is a solution formulated with Bis-(4-methyl- phenyl)-iodoniumhexafluoro-phosphate dissolved in reactive solvents. This solution utilizes propylene carbonate as a reactive thinner. It boasts no benzene emissions and maintains a low-odor profile, ensuring a more environmentally friendly and user-friendly application.

Functions: Photoinitiator

CAS Number: 60565-88-0

End Uses: Flexography Ink, Laminating Adhesive, Radiation Curable Adhesive, Screen Printing Ink, Varnishes

Active Content: 50.0 - 50.0 %

Technical Data Sheet

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Identification & Functionality

CASE Ingredients Functions

Features & Benefits

Product Highlights
  • Deuteron® UV 2257 is a solution of Bis-(4-methyl- phenyl)-iodoniumhexafluoro-phosphate in reactive solvents. Deuteron® photo initiators are suitable for resins based on oxirane and/or oxetane groups (epoxy resins and vinylether. The addition of Deuteron® photo initiators enables the formulator to utilize UV light to induce the polymerisation of the above-mentioned resin systems.
  • Deuteron® UV 2257 is soluble in the mentioned binder systems including the standard solvents and reactive diluents. The polymerization is initiated by exposure to UV light in a wavelength range between 220 nm and 250 nm. The maximum absorption is at 240 nm. Suitable light sources are high-pressure mercury lamps that have a high emission in the mentioned area of absorption.
  • Deuteron® UV 2257 does not affect the film shrinkage negatively because it contains no volatile solvents.

Applications & Uses

Compatible Substrates & Surfaces
Cure Method
Coating Type
Use Level
1.0 - 5.0 %
Application and Dosage Information

Deuteron® UV 2257 is suitable for a wide range of applications including:

  • Overprint varnishes
  • UV silk-screen inks
  • UV flexographic inks
  • UV lamination adhesives
  • Metal coatings
  • Plastics coatings

The use of Deuteron® UV 2257 especially improves the following properties:

  • low shrinkage
  • no benzene emission
  • only slight odor
  • flexibility
  • adhesion properties on difficult substrates


  • Typical addition range: 1.0 % - 5.0 %
  • The required dosage level highly depends on the system and the desired curing speed.
  • Thus, it is highly recommended to determine the needed addition level by a practical ladder study. 


  • Deuteron® UV cationic initiators can be incorporated into the binder with high-speed stirrer or other aggregates, e.g. dissolver.


Physical Form
Yellow, slightly viscous liquid
Typical Properties
ValueUnitsTest Method / Conditions
Densityapprox. 1.4g/cm³-
Active Content50.0%-

Packaging & Availability

Packaging Type
Regional Availability
  • Canada
  • Mexico
  • USA
Packaging Information
  • Plastic canister (25 kg net)

Storage & Handling

Shelf Life
12 months
Storage and Shelf Life Conditions
  • 12 months at room temperature and dry conditions in its original tightly closed containers.
  • Do not expose to direct sunlight. Optimum storage temperature is be- tween 10 °C and 35 °C. Avoid contact with water and high humidity.