C.I. solvent orange 2

C.I. Solvent Orange 2 (CAS 2646-17-5) is an azo-based solvent dye also known by the trade names Orange OT and C.I. 12100, with EC number 220-162-8. It carries no E-code designation, confirming its restriction to industrial rather than food-contact applications.

In plastics and polymer processing, Solvent Orange 2 dissolves directly into the polymer matrix to produce transparent orange coloration without particle dispersion. It is also applied in textile and leather dyeing, where its solubility in organic media allows penetration into hydrophobic substrates, and in printing inks, where it contributes to solvent-based formulations requiring consistent hue strength.

Solvent Orange 2 is supplied as a powder or granulate and is subject to REACH registration requirements within the European Economic Area. Buyers should verify SDS documentation confirming compliance with CLP classification obligations. Standard commercial packaging includes fibre drums and multi-layer bags; smaller quantities are available on request.