ILLINOIS -- Anhydrous ammonia is a pungent gas, with suffocating fumes used as a fertilizer in corn production.
The President of the Illinois Fertilizer and Chemical Association -- Jean Payne -- says it's incredibly rare to see an accident like this occur.
State laws regarding transportation of hazardous chemicals vary -- but Payne says Illinois' rules are among the toughest in the country.
She says transportation training is available for farmers, but it is not mandatory.
The tanks involved in today's accident are owned by Akron services.
The accident remains under investigation.