tariff heading and description 2811194000 hydrogen cyanide 2812102000 phosgene  carbonyl dichloride 2812103100 phosphorus oxychloride 2812103200 phosphorus trichloride 2812103300 phosphorus pentachloride 2812104100 sulphur monochloride 2812104200 sulphur dichloride 2812105000 thionyl chloride 2853001000 cyanogen chloride 2903393000 1 1 3 3 3 pentafluoro 2 trifluoromethyl prop 1 ene 2904901000 trichloronitromethane chloropicrin 2905195000 3 3 dimethylbutan 2 ol pinacolyl alcohol 2918191000 2 2 diphenyl 2 hydroxyacetic acid benzilic acid 2920903100 dimethyl and trimethyl phosphite 2920903200 diethyl and triethyl phosphite 2921191000 bis 2 chloroethyl ethylamine 2921192000 chlormethine inn bis 2 chloroethyl methylamine 2921193000 trichlormethine inn tris 2 chloroethyl amine 2921194000 n n dialkyl methyl ethyl n propyl or isopropyl 2 chloroethylamines and their protonated salts 2922131000 triethanolamine 2922192900 other n n dimethyl 2 aminoethanol and its protonated salts 2922193000 ethyldiethanolamine 2922194000 methyldiethanolamine 2929901000 n n dialkyl methyl ethyl n propyl or isopropyl phosphoramidic dihalides 2929902000 dialkyl methyl ethyl n propyl or isopropyl n n dialkyl methyl ethyl n propyl or isopropyl phosphoramidates 2930902100 n n dialkyl methyl ethyl n propyl or isopropyl aminoethane 2 thiols and their protonated salts 2930906000 thiodiglycol inn bis 2 hydroxyethyl sulphide 2930907000 o o diethyl s [2 diethylamino ethyl] phosphorothioate and its alkylated or protonated salts 2930909100 containing a phosphorus atom to which is bonded one methyl ethyl n propyl or isopropyl group but not further carbon atoms 2930909400 [s 2 dialkyl methyl ethyl n propyl or isopropyl amino ethyl] hydrogen alkyl methyl ethyl n propyl or isopropyl phosphonothioates and their o alkyl â¤ c10 including cycloalkyl esters  alkylated or protonated salts thereof 2930909500 2-chloroethylchloromethylsulphide  bis 2 chloroethyl sulphide 2930909600 bis 2 chloroethylthio methane  1 2 bis 2 chloroethylthio ethane 1 3 bis 2 chloroethylthio n propane  1 4 bis 2 chloroethylthio n butane  1 5 bis 2 chloroethylthio n pentane 2930909700 bis 2 chloroethylthiomethyl ether  bis 2 chloroethylthioethyl ether 2931004000 o alkyl â¤ c10 including cycloalkyl alkyl methyl ethyl n propyl or isopropyl phosphonofluoridates 2931009100 containing a phosphorus atom to which is bonded one methyl ethyl n propyl or isopropyl group but not further carbon atoms 2931009300 o alkyl â¤ c10 including cycloalkyl n n dialkyl methyl ethyl n propyl or isopropyl phosphoramidocyanidates 2931009400 2 chlorovinyldichloroarsine  bis 2 chlorovinyl chloroarsine  tris 2 chlorovinyl arsine 2931009500 alkyl methyl ethyl n propyl or isopropyl phosphonyl difluorides 2931009600 [o 2 dialkyl methyl ethyl n propyl or isopropyl amino ethyl] hydrogen alkyl methyl ethyl n propyl or isopropyl phosphonites and their o alkyl â¤ c10 including cycloalkyl esters  alkylated or protonated salts thereof 2931009700 o isopropyl methylphosphonochloridate  o pinacolyl methylphosphonochloridate 2933396000 3 quinuclidinyl benzilate 2933397000 quinuclidine 3 ol 3002904000 saxitoxin 3002905000 ricin