2,4,5-T PGBEE 2,4,5-T propylene glycol butyl ether ester 2,4,5-Trichlorophenoxyacetic acid, propylene glycol butyl ether ester 3084-62-6 ACETIC ACID, 2,4,5-TRICHLOROPHENOXY-, 2-BUTOXYPROPYL ESTER