The term “opaque rosin” shall apply to the article resulting when rosin undergoes internal modification indicated by a turbid, clouded, or opaque appearance, that is, loss of transparency, brought about by the occlusion of moisture or the formation of an excessive quantity of resin acid crystals in the rosin.
source: 11 FR 14665, Dec. 27, 1946; 17 FR 221, Jan. 9, 1952; 20 FR 6433, Sept. 1, 1955, unless otherwise noted.
cite as: 7 CFR 160.14