Section 06 Products of the chemical or allied 29 Organic chemicals 29 04 Sulphonated, nitrated or nitrosated derivatives of hydrocarbons 29 04 91 Trichloronitromethane (chloropicrin) 29 04 91 00 Trichloronitromethane (chloropicrin) Commodity Code Description 29 04 91 00 00 Trichloronitromethane (chloropicrin)