CHEMTREC: telephone toll-free 800-424-9300 Provides emergency response personnel with immediate access to technical information about the products(s) involved in a hazardous materials spill or incident; guidance on how to protect themselves and the public; and what initial action is required to mitigate the incident. This free service is available 24 hours a day, seven days a week. CHEMTREC can assist non-English speaking callers through the use of an interpreter service. Chesapeake Teleservice: telephone 410-494-5091 An answering service that provides first-aid information from our Material Safety Data Sheets, 24 hours a day, seven days a week. If you are involved in a medical emergency, we recommend calling the emergency services number for your area, usually 911, or contact your local poison control center. If emergency personnel need additional information, the MSDSs are on file at Chesapeake Teleservice.