(a) Rubber hydrocarbon solvent is a petroleum derivative.
(b) Distillation range. When 10 percent of the sample has been distilled into a graduated receiver, the themometer shall not read more than 170 [deg]F. nor less than 90 [deg]F. When 90 percent has been recovered in the receiver the thermometer shall not read more than 250 [deg]F. [T.D. ATF-133, 48 FR 24673, June 2, 1983. Redesignated by T.D. ATF-442, 66 FR 12854, Mar. 1, 2001]