Fecha de publicación: 20/04/1976 Fuente: WIPO "pollen" A blue-burning pyrotechnic tracer mix which provides a smoke trail even ar the blue flame is no longer visible to thus extend the visible range of the projectile in which the mixture is employed, the pyrotechnic mixture comprising by weight percent: 6-10% potassium perchlorate, 11-18% magnesium, 10-20% cupric chloride anhydrous, 35-45% barium nitrate, 12-18% hexachlorobenzene, 5-10% sulfur. -GOVT PAR The invention described herein may be manufactured, used and licensed by or for the Government for governmental purposes without the payment to us of any royalty thereon.