PPG Industries has said that it will increase prices for all grades of off-schedule liquid caustic soda (anhydrous basis) in the US by US$45 per short ton and in Canada by C$50 (US$48.3) per ton.
PPG Commodity Chemicals senior vice-president Michael McGarry said the increase in the caustic soda price is due to continued drops in chlorine demand and reductions in chlorine pricing.
"Global chlor-alkali operating rates continue to decline, as well as global operating rates for PVC and other chlorine derivatives," McGarry added.
The company said the US chlor-alkali operating rate for October was 78%, which is down from 87% in August.
In Europe and Asia, PVC operating rates have declined considerably in the past 45 days.
The company's current North American chlor-alkali operating rates have declined to from 91% in September to around 70%.