Unilex Colours and Chemicals Limited supplies very high quality Violet 23 Organic Pigments with consistent quality for Paint, Plastic, Ink , Dispersion etc. Heat Stability- 160 C -280 C (As per application) Residue on Sieve (325 Mesh)--Max. < 0.5 %, Oil Absorption-- 0.5 cc/1 gm, Full Strength---8,, Reduction Tone--7,