ECCN 1C350: Chemicals

Last Updated January 17, 2025
NOTE: Mixtures that contain precursor chemicals in concentrations that are below the levels indicated in (b) through (d) may be controlled by ECCN 1C395 or 1C995.Precursor chemicals in ECCN 1C350 are listed by name, Chemical Abstract Service (CAS) number and CWC Schedule (where applicable). Precursor chemicals of the same structural formula (e.g., hydrates, isotopically-labeled forms or all possible stereoisomers) are controlled by ECCN 1C350, regardless of name or CAS number.

  1. [Reserved]
  2. Australia Group-controlled precursor chemicals also identified as Schedule 2 chemicals under the CWC, as follows, and mixtures in which at least one of the following chemicals constitutes 30 percent or more of the weight of the mixture:
    1. (C.A.S. #7784–34–1);
      1. Arsenic trichloride
      2. Arsenic (III) chloride
      3. Arsenous chloride
      4. Fuming liquid arsenic
      5. Trichloroarsine
    2. (C.A.S. #76–93–7);
      1. Benzilic acid
      2. .alpha.,.alpha.-Diphenyl-.alpha.-hydroxyacetic acid
      3. Diphenylglycolic acid
      4. .alpha.,.alpha.-Diphenylglycolic acid
      5. Diphenylhydroxyacetic acid
      6. .alpha.-Hydroxy-2,2-diphenylacetic acid
      7. 2-Hydroxy-2,2-diphenylacetic acid
      8. .alpha.-Hydroxy-.alpha.-phenylbenzeneacetic acid
      9. Hydroxydiphenylacetic acid
    3. (C.A.S. #78–38–6);
      1. Diethyl ethylphosphonate
      2. Ethylphosphonic acid diethyl ester
    4. (C.A.S. #683-08-9);
      1. Diethyl methylphosphonate
    5. (C.A.S. #15715–41–0);
      1. Diethyl methylphosphonite
      2. Diethoxymethylphosphine
      3. Diethyl methanephosphonite
      4. 0,0-Diethyl methylphosphonite
      5. Methyldiethoxyphosphine
      6. Methylphosphonous acid diethyl ester
    6. (C.A.S. #2404–03–7);
      1. Diethyl-N, N-dimethylphosphoro-amidate
      2. N,N-Dimethyl-O,O′-diethyl phosphoramidate
      3. Diethyl dimethylphosphoramidate
      4. Dimethylphosphoramidic acid diethyl ester
    7. (C.A.S. #41480-75-5);
      1. N,N-Diisopropylaminoethanethiol hydrochloride
    8. (C.A.S. #5842–07–9);
      1. N,N-Diisopropyl-.beta.-aminoethane thiol
      2. 2-(Diisopropylamino) ethanethiol
      3. Diisopropylaminoethanethiol
      4. .beta.-Diisopropylaminoethanethiol
      5. 2-(bis(1-Methylethyl)amino) ethanethiol
    9. (C.A.S. #96–80–0);
      1. N,N-Diisopropyl-.beta.-aminoethanol
      2. N,N-Diisopropyl-2-aminoethanol
      3. 2-(Diisopropylamino) ethanol
      4. (N,N-Diisopropylamino) ethanol
      5. 2-(Diisopropylamino) ethyl alcohol
      6. N,N-Diisopropylethanolamine
    10. (C.A.S. #96–79–7);
      1. N,N-Diisopropyl-.beta.-aminoethyl chloride
      2. 2-Chloro-N,N-diisopropylethanamine
      3. 1-Chloro-N,N-diisopropylaminoethane
      4. 2-Chloro-N,N-diisopropylethylamine
      5. N-(2-chloroethyl)-N-(1-methylethyl)-2-propanamine
      6. N-(2-Chloroethyl) diisopropylamine
      7. N,N-Diisopropyl-2-chloroethylamine
      8. 1-(Diisopropylamino)-2-cholorethane
      9. 2-(Diisopropylamino)ethyl chloride
      10. Diisopropylaminoethyl chloride
      11. .beta.-Diisopropylaminoethyl chloride
    11. (C.A.S. #4261–68–1);
      1. N,N-Diisopropyl-beta-aminoethyl chloride hydrochloride
    12. (C.A.S. #6163–75–3);
      1. Dimethyl ethylphosphonate
      2. Dimethyl ethanephosphonate
      3. Ethylphosphonic acid dimethyl ester
    13. (C.A.S. #756–79–6);
      1. Dimethyl methylphosphonate
      2. Dimethoxymethyl phosphine oxide
      3. Dimethyl methanephosphonate
      4. Methanephosphonic acid dimethyl ester
      5. Methylphosphonic acid dimethyl ester
    14. (C.A.S. #677–43–0);
      1. N,N-dimethylamino-phosphoryl dichloride
    15. (C.A.S. #1498–40–4);
      1. Ethylphosphonous dichloride
      2. Dichloroethylphosphine
      3. Ethyl phosphonous dichloride
      4. Ethyldichlorophosphine
    16. (C.A.S. #430–78–4);
      1. Ethylphosphonus difluoride
      2. Ethyldifluorophosphine
    17. (C.A.S. #1066–50–8);
      1. Ethylphosphonyl dichloride
      2. Dichloroethylphosphine oxide
      3. Ethanephosphonyl chloride
      4. Ethylphosphinic dichloride
      5. Ethylphosphonic acid dichloride
      6. Ethylphosphonic dichloride
    18. (C.A.S. #993–13–5);
      1. Methylphosphonic acid
    19. (C.A.S. #676–98–2)
      1. Methylphos-phonothioic dichloride
    20. (C.A.S. #464–07–3);
      1. Pinacolyl alcohol
      2. tert-Butyl methyl carbinol
      3. 2,2-Dimethyl-3-butanol
      4. 3,3-Dimethyl-2-butanol
      5. 1-Methyl-2,2-dimethylpropanol
    21. (C.A.S. #1619–34–7);
      1. 3-Quinuclidinol
      2. 1-Azabicyclo(2.2.2)octan-3-ol
      3. 3-Hydroxyquinuclidine
    22. (C.A.S. #111–48–8);
      1. Thiodiglycol
      2. Bis(2-hydroxyethyl) sulfide
      3. Bis(2-hydroxyethyl) thioether
      4. Di(2-hydroxyethyl) sulfide
      5. Diethanol sulfide
      6. 2,2′-Dithiobis-(ethanol)
      7. 3-Thiapentane-1,5-diol
      8. 2,2′-Thiobisethanol
      9. 2,2′-Thiodiethanol
      10. Thiodiethylene glycol
      11. 2,2′-Thiodiglycol
  3. Australia Group-controlled precursor chemicals also identified as Schedule 3 chemicals under the CWC, as follows, and mixtures in which at least one of the following chemicals constitutes 30 percent or more of the weight of the mixture:
    1. (C.A.S. #762–04–9);
      1. Diethyl phosphite
      2. Diethoxyphosphine oxide
      3. Diethyl acid phosphite
      4. Diethyl hydrogen phosphite
      5. Diethyo phosphonate
      6. Hydrogen diethyl phosphite
    2. (C.A.S. #868–85–9);
      1. Dimethyl phosphite
      2. Dimethoxyphosphine oxide
      3. Dimethyl acid phosphite
      4. Dimethyl hydrogen phosphite
      5. Dimethyl phosphonate
      6. Hydrogen dimethyl phosphite
      7. Methyl phosphate
    3. (C.A.S. #139–87–7)
      1. Ethyldiethan-olamine
    4. (C.A.S. #10025–87–3);
      1. Phosphorus oxychloride
      2. Phosphonyl trichloride
      3. Phosphoric chloride
      4. Phosphoric trichloride
      5. Phosphoroxychloride
      6. Phosphoroxytrichloride
      7. Phosphorus chloride oxide
      8. Phosphorus monoxide trichloride
      9. Phosphorus oxide trichloride
      10. Phosphorus oxytrichloride
      11. Phosphorus trichloride oxide
      12. Phosphoryl trichloride
      13. Trichlorophosphine oxide
      14. Trichlorophosphorus oxide
    5. (C.A.S. #10026–13–8);
      1. Phosphorus pentachloride
      2. Pentachlorophosphorane
      3. Pentachlorophosphorus
      4. Phosphoric chloride
      5. Phosphorus(V) chloride
      6. Phosphorus perchloride
    6. (C.A.S. #7719–12–2);
      1. Phosphorus trichloride
      2. Phosphorus chloride
      3. Trichlorophosphine
    7. (C.A.S. #10545–99–0);
      1. Sulfur dicholoride
    8. (C.A.S. #10025–67–9);
      1. Sulfur Monochloride
    9. (C.A.S. #7719–09–7);
      1. Thionyl chloride
      2. Sulfinyl chloride
      3. Sulfinyl dichloride
      4. Sulfur chloride oxide
      5. Sulfur oxychloride
      6. Sulfurous dichloride
      7. Sulfurous oxychloride
      8. Thionyl dichloride
    10. (C.A.S. #102–71–6);
      1. Triethanolamine
      2. Alkanolamine 244
      3. Nitrilotriethanol
      4. 2,2′,2″-Nitrilotriethanol
      5. 2,2′,2″-Nitrilotris(ethanol)
      6. TEA
      7. TEA (amino alcohol)
      8. Tri (2-hydroxyethyl) amine
      9. Triethanolamin
      10. Tris (.beta.-hydroxyethyl) amine
      11. Tris (2-hydroxyethyl) amine
      12. Trolamine
    11. (C.A.S. #122–52–1);
      1. Triethyl phosphite
      2. Phosphorous acid triethyl ester
      3. Triethoxyphosphine
      4. Tris(ethoxy)phosphine
    12. (C.A.S. #121–45–9);
      1. Trimethyl phosphite
      2. Phosphorus acid trimethyl ester
      3. Trimethoxyphosphine
  4. Other Australia Group-controlled precursor chemicals not also identified as Schedule 1, 2, or 3 chemicals under the CWC, as follows, and mixtures in which at least one of the following chemicals constitutes 30 percent or more of the weight of the mixture:
    1. (C.A.S. #1341–49–7);
      1. Ammonium hydrogen fluoride
      2. Acid ammonium fluoride
      3. Ammonium bifluoride
      4. Ammonium difluoride
      5. Ammonium hydrofluoride
      6. Ammonium hydrogen bifluoride
      7. Ammonium hydrogen difluoride
      8. Ammonium monohydrogen difluoride
    2. (C.A.S. #107–07–3);
      1. 2-Chloroethanol
      2. 2-Chloro-1-ethanol
      3. Chloroethanol
      4. 2-Chloroethyl alcohol
      5. Ethene chlorohydrin
      6. Ethylchlorohydrin
      7. Ethylene chlorhydrin
      8. Ethylene chlorohydrin
      9. Glycol chlorohydrin
      10. Glycol monochlorohydrin
      11. 2-Hydroxyethyl chloride
    3. (C.A.S. #109-89-7)
      1. Diethylamine
    4. (C.A.S. #100–37–8);
      1. N, N-Diethylethanolamine
      2. N,N-Diethyl-2-aminoethanol
      3. Diethyl (2-hydroxyethyl) amine
      4. N,N-Diethyl-N-(.beta.-hydroxyethyl) amine
      5. N,N-Diethyl-2-hydroxyethylamine
      6. Diethylaminoethanol
      7. 2-(Diethylamino) ethanol
      8. 2-(Diethylamino)ethyl alcohol
      9. N,N-Diethylmonoethanolamine
      10. (2-Hydroxyethyl) diethylamine
      11. 2-Hydroxytriethylamine
    5. (C.A.S. #589–57–1);
      1. Diethyl chlorophosphite
    6. (C.A.S. #298–06–6);
      1. O,O-Diethyl phosphorodithioate
    7. (C.A.S. #2465–65–8);
      1. O,O-Diethyl phosphorothioate
    8. (C.A.S. #108–18–9);
      1. Di-isopropylamine
      2. N,N-Diisopropylamine
      3. N-(1-Methylethyl)-2-propanamine
    9. (C.A.S. #124–40–3);
      1. Dimethylamine
      2. N-Methyl methanamine
    10. (C.A.S. #506–59–2);
      1. Dimethylamine hydrochloride
      2. Dimethylammonium chloride
      3. N-Methyl methanamine hydrochloride
    11. (C.A.S. #142-84-7);
      1. Dipropylamine
    12. (C.A.S. #762-77-6);
      1. Ethyl chlorofluorophosphate
    13. (C.A.S. #1498-51-7);
      1. Ethyl dichlorophosphate
    14.  (C.A.S. #460-52-6);
      1. Ethyl difluorophosphate
    15. (C.A.S. #7664-39-3);
      1. Hydrogen fluoride
    16. (C.A.S. #3554-74-3);
      1. 3-Hydroxyl-1-methylpiperidine
    17. (C.A.S. #76-89-1);
      1. Methyl benzilate
    18. (C.A.S. #754-01-8);
      1. Methyl chlorofluorophosphate
    19. (C.A.S. #677-24-7);
      1. Methyl dichlorophosphate
    20. (C.A.S. #22382-13-4);
      1. Methyl difluorophosphate
    21. (C.A.S. #14277-06-6);
      1. N,N Diethylacetamidine
    22. (C.A.S. #53510-30-8);
      1. N,N-Diethylbutanamidine
    23. (C.A.S. #90324-67-7);
      1. N,N-Diethylformamidine
    24. (C.A.S. #1342789-47-2);
      1. N,N Diethylisobutanamidine
    25. (C.A.S. #84764-73-8);
      1. N,N-Diethylpropanamidine
    26. (C.A.S. #1315467-17-4);
      1. N,N-Diisopropylbutanamidine
    27. (C.A.S. #857522-08-8);
      1. N,N-Diisopropylformamidine
    28. (C.A.S. #2909-14-0);
      1. N,N-Dimethylacetamidine
    29. (C.A.S. #1340437-35-5);
      1. N,N-Dimethylbutanamidine
    30. (C.A.S. #44205-42-7);
      1. N,N-Dimethylformamidine
    31. (C.A.S. #321881-25-8);
      1. N,N-Dimethylisobutanamidine
    32. (C.A.S. #56776-14-8);
      1. N,N-Dimethylpropanamidine
    33. (C.A.S. #1339586-99-0);
      1. N,N-Dipropylacetamidine
    34. (C.A.S. #1342422-35-8);
      1. N,N-Dipropylbutanamidine
    35. (C.A.S. #48044-20-8);
      1. N,N-Dipropylformamidine
    36. (C.A.S. #1342700-45-1);
      1. N,N-Dipropylisobutanamidine
    37. (C.A.S. #1341496-89-6);
      1. N,N-Dipropylpropanamidine
    38. (C.A.S. #1314-80-3);
      1. Phosphorus pentasulfide
    39. (C.A.S. #75-97-8);
      1. Pinacolone
    40. (C.A.S. #7789-29-9);
      1. Potassium bifluoride
    41. (C.A.S. #151-50-8);
      1. Potassium cyanide
    42. (C.A.S. #7789-23-3);
      1. Potassium fluoride
    43. (C.A.S. #3731-38-2);
      1. 3-Quinuclidone
    44. (C.A.S. #1333-83-1);
      1. Sodium bifluoride
    45. (C.A.S. #143-33-9);
      1. Sodium cyanide
    46. (C.A.S. #7681-49-4);
      1. Sodium fluoride
    47. (C.A.S. #16893-85-9);
      1. Sodium hexafluorosilicate
    48. (C.A.S. #1313-82-2);
      1. Sodium sulfide
    49. (C.A.S. #637-39-8);
      1. Triethanolamine hydrochloride
    50. (C.A.S. #116-17-6);
      1. Tri-isopropyl phosphite