What this tab covers How it is regulated and what could disrupt supply: hazard classification, rules in the EU, US and India, anti-dumping duties and other trade measures, and supply-risk notes.
Hazards
Classification
UN number
Key risks
mostly not classified; some diarylides may contain trace PCBs; dust hazards (indicative)
not regulated
Dust explosions in finishing; heavy-metal and solvent effluent; trace impurities (PCBs, aromatic amines) in some azo grades.
Main rules
Where
Rule
Effect
EU
REACH; restrictions on lead chromate pigments; cosmetics colourant list
favours organic replacements (indicative)
US
TSCA PCB limits for inadvertent PCBs in pigments; FDA colour additive rules for food and cosmetics
testing for diarylide yellows (indicative)
Toy and packaging rules
EN 71-3, food contact and Swiss Ordinance for inks
purity specifications
India
Rule
Effect
DGTR anti-dumping duty on arylides from China: 24.79%, 26.64% and 44.90% of CIF; continuation recommended 12 Oct 2026; existing duty extended to 13 Jan 2027
protects Indian arylide makers; raises costs for azo pigment makers that import
Anti-dumping duty on mica-based pearl industrial pigments from China, extended to 25 Feb 2027
protects Indian effect pigment makers (Sudarshan)
Environment (Protection) Rules effluent standards for dye and pigment units (indicative)
compliance cost
Trade measures
India ADD on arylides and pearl pigments from China
US tariffs on Indian chemical exports (cut from 50% to 18% in early 2026, Galaxy Surfactants call)
Supply risk
China holds about 70% of capacity and much of the intermediate chain, so buyers outside China value Indian and European supply; Heubach's European plants reduce dependence on Chinese supply chains (Arihant).