Investing in chemicals By: MarketWatch April 22, 2011 at 10:59 AM EDT Backed by the potential for margins to widen and deal activity to provide abnormal returns, the leadership of chemical stocks seems sustainable. Read More >> Related Stocks: Agrium, Inc. Air Products & Chemicals Airgas Basf Se ADR Berkshire Hathaway Dow Chemical DuPont USA LyondellBasell Industries MATERIALS Materials ETF Vanguard Monsanto Co Owens Corning Inc Potash Corporation of Saskatchewan Sherwin-Williams Standard & Poors 500 US Basic Materials Ishares ETF Uscf Gold Strategy Plus Income Fund