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Agricultural Marketing Service, USDA § 160.14 ‘‘sulphate wood turpentine,’’ as the § 160.12 Standard designations for case may be. rosin. § 160.7 Gum spirits of turpentine. (a) Rosin within the meaning of the act and the provisions in this part shall The designation ‘‘gum spirits of tur- be designated as ‘‘gum rosin,’’ ‘‘wood pentine’’ shall refer to the kind of spir- rosin,’’ or ‘‘tall oil rosin,’’ as the case its of turpentine obtained by distilla- may be. tion of the oleoresin (gum) from living trees, and commonly known prior to (b) The designation ‘‘gum rosin’’ the passage of the act as gum spirits, shall refer to the kind of rosin remain- gum turpentine, spirits of turpentine, ing after the distillation of gum spirits or oil of turpentine. of turpentine from the oleoresin (gum) obtained from living pine trees. § 160.8 Steam distilled wood turpen- (c) The designation ‘‘wood rosin’’ tine. shall refer to the kind of rosin recov- The designation ‘‘steam distilled ered after the distillation of the vola- wood turpentine’’ shall refer to the tile oil from the oleoresin within or ex- kind of spirits of turpentine obtained tracted from pine wood by any suitable by steam distillation from the process, followed by any necessary fur- oleoresinous component of wood ther refinement. whether in the presence of the wood or (d) The designation ‘‘tall oil rosin’’ after extraction from the wood, and shall refer to the kind of rosin remain- commonly known prior to the passage ing after the removal of the fatty acids of the act as wood turpentine, steam from tall oil by fractional distillation, distilled turpentine, steam distilled and having the characteristic form and wood turpentine, or S. D. wood turpen- appearance and other physical and tine. chemical properties normal for other kinds of rosin. § 160.9 Destructively distilled wood turpentine. § 160.13 Grade designations for rosin. The designation ‘‘destructively dis- The grades of rosin shall be des- tilled wood turpentine’’ shall refer to ignated, from highest to lowest, by the the kind of spirits of turpentine pre- following letters, respectively: XC, XB, pared from the distillate obtained in XA, X, WW, WG, N, M, K, I, H, G, F, E, the destructive distillation (carbon- D, B. In addition, the letters OP shall ization) of wood, and commonly known be used to designate the grade of prior to the passage of the act as de- opaque rosin, and the letters FF shall structively distilled wood turpentine or be used to designate the grade of nor- D.D. wood turpentine. mal wood rosin: Provided, That the § 160.10 Sulphate wood turpentine. product recovered in the refining of wood rosin, that is darker in color than The designation ‘‘sulphate wood tur- the standard for FF grade, and that pentine’’ shall refer to the kind of spir- contains rosin acids in lesser quantity its of turpentine prepared from the than is normal for such rosin, shall be condensates that are recovered in the graded and designated as B wood resin. sulphate process of cooking wood pulp, and commonly known as sulphate tur- [11 FR 14665, Dec. 27, 1946, as amended at 17 pentine or sulphate wood turpentine. FR 221, Jan. 9, 1952; 33 FR 8722, June 14, 1968] § 160.11 Quality requirements. § 160.14 Opaque rosin. The several standards for spirits of The term ‘‘opaque rosin’’ shall apply turpentine, as defined in §§ 160.8 to to the article resulting when rosin un- 160.10, inclusive, shall be deemed to dergoes internal modification indicated mean the respective kinds of spirits of by a turbid, clouded, or opaque appear- turpentine having properties that con- ance, that is, loss of transparency, form with the standard specifications brought about by the occlusion of adopted therefor by the American Soci- moisture or the formation of an exces- ety for Testing Materials, contained in sive quantity of resin acid crystals in appendix A to this part. the rosin. 293 .
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