China National Chemical Corp. has extended the tender offer to buy shares of Swiss seeds giant Syngenta AG to November 8, the company said Tuesday. The state-owned chemicals company, known as ChemChina announced its $43 billion takeover of Syngenta in February. ChemChina said 17.9 million shares had been tendered by holders as of September 2. It has extended the deadline for the tender offer once previously, according to The Wall Street Journal. The deal is pending approval from the European Union, among other jurisdictions. ChemChina said it still plans to complete the Syngenta acquisition by the end of this year. The deal cleared a big hurdle in August when it received approval from the Committee on Foreign Investment in the US for the Syngenta acquisition.