Characteristic of Corrosivity CFR 40 261.22

(a) A solid waste exhibit the characteristic of corrosivity if a representative samle of the waste has either of the following properties:

1. It is aqueous and has a pH less than or equal to 2 or greater than or equal to 12.5, as determined by a meter using Method 9040C in "Test Methods for Evaluating Solid Waste, Physical/Chemical Methods," EPA Publication SW-846, as incorporated by reference in 260.11 of this chapter.
2. It is a liquid and corrodes steel (SAE 1020) at a rate greater than 6.35 mm (0.250 inch) per year at a test temperature of 55C (130F) as determined by Method 1110A in "Test Methods for Evaluating Solid Waste, Physical/Chemical Methods," EPA Publication SW-846, as incorporated by reference in 260.11 of this chapter.

(b) A solid waste that exhibits the characteristic of corrosivity has the EPA Hazardous Waste Number of D002.

Generators may make process knowledge based corrosivity determinations by evaluating the established process and raw materials used in the waste generation. If the generator has knowledge that a specific waste would pass or fail sample testing, no testing is required. 40 CFR 262.11(c)(2)