Photoinitiator ITX (Isopropylthioxanthone, Offset UV Inks)

ITX (isopropylthioxanthone) was flagged in 2005 after migration into food (Tetra Pak packaging) led to EFSA scrutiny. While the EU has not formally banned ITX, food-packaging ink manufacturers have largely replaced it with low-migration alternatives (DETX, high-MW thioxanthone derivatives, polymeric photoinitiators). For non-food-contact offset UV applications, ITX remains widely used for its excellent sensitizing efficiency and good acrylate solubility. Always verify food-contact status with your regulatory team before specifying ITX-containing inks.