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Mercury in carbide based process

Mercury in carbide based process. Currently for one ton PVC produced in China: 1.2 kg of HgCl 2 catalyst consumed on average (as 11% of HgCl 2 content). For 5.8 million tons of PVC produced in 2009, around 7000 tons of mercury catalyst used, comprising: 770 tons of HgCl 2 and 570 tons of mercury were used (MIIT, 2010) Carbide-based PVC production consumes around 60? of China’s total annual mercury use.

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