Position 2909 — IV. ETHERS, ALCOHOL PEROXIDES, ETHER PEROXIDES, ACETAL AND HEMIACETAL PEROXIDES, KETONE PEROXIDES, EPOXIDES WITH A THREE-MEMBERED RING, ACETALS AND HEMIACETALS, AND THEIR HALOGENATED, SULPHONATED, NITRATED OR NITROSATED DERIVATIVES | TariffCodex