Welcome to The Callahan Company Ranked among the top 25 chemical distributors in the United States, the Callahan Company offers the benefit of four stocking locations from which to choose. Customers receive the benefits of a large chemical distributor with the local attention that each market requires. Now in it's 46th year, the Callahan Company boasts one of the most professional sales and service groups in the industry. Callahan has earned a distinguished reputation by carrying high levels of inventory that are handled by experienced personnel with excellent knowledge of both the products an