Description: Extractable Fractions in Nylon Resins (Deionized Water extractives, 95% ethanol extractives, Ethyl acetate extractives, and Benzene extractives); Specific Gravity in Nylon; Melting Point in Nylon Resins; and Solubility in Boiling HCl in Nylon Resins Method: 21 CFR 177.1500