STC 4 PLASTIC DRUMS (1H1), CONTAINING 200 L EACH ONE UN1719, CAUSTIC ALKALI LIQUID, .O.S.(SODIUM HYDROXIDE), CLASS 8, PG II, FLASH POINT: N/A, MARINE POLLUTANT, EMS: F-A, S-B. 4 PLASTIC DRUMS (1H1), CONTAINING 200 L EACH ONE UN1719, CAUSTIC ALKALI LIQUID, .O.S.(SODIUM HYDROXIDE), CLASS 8, PG II, FLASH POINT: N/A, MARINE POLLUTANT, EMS: F-A, S-B.  