化学原料板块12月9日跌1.67%，氯碱化工领跌，主力资金净流出5.1亿元

Group 1 - The chemical raw materials sector experienced a decline of 1.67% on December 9, with chlor-alkali chemicals leading the drop [1] - The Shanghai Composite Index closed at 3909.52, down 0.37%, while the Shenzhen Component Index closed at 13277.36, down 0.39% [1] - A detailed table of individual stock performance within the chemical raw materials sector is provided [1] Group 2 - On the same day, the chemical raw materials sector saw a net outflow of 510 million yuan from main funds, while retail investors contributed a net inflow of 486 million yuan [2] - Speculative funds recorded a net inflow of 24.16 million yuan [2] - A table detailing the fund flow for individual stocks in the chemical raw materials sector is included [2]