C.I. pigment yellow 34

C.I. Pigment Yellow 34, also known as Chrome Yellow 34, Primrose Yellow, or Krolory Yellow, is an inorganic lead chromate-based pigment registered under CAS 1344-37-2 and EC 215-693-7. It delivers strong yellow coloration through the absorption of violet and blue wavelengths, with hue ranging from primrose to medium yellow depending on particle size and processing.

In industrial coatings, Chrome Yellow 34 provides high opacity and UV-stable coloration in solvent-borne and alkyd systems. In plastics compounding, it disperses into polymer matrices to achieve consistent batch-to-batch color matching. Its surface-active characteristics also support wetting and adhesion in printing inks used for packaging substrates.

As a lead chromate pigment, C.I. Pigment Yellow 34 is subject to REACH restrictions under Annex XVII and requires documented risk management in EU supply chains. Procurement teams should confirm supplier REACH compliance documentation and substance authorization status prior to sourcing. It is typically supplied as a dry powder in multi-wall paper sacks or fiber drums.