Table of Concentration Limits
List I Chemicals
|
N-Acetylanthranilic acid, its salts and esters |
8522 |
20% by Weight |
Concentration based on any combination of N-acetylanthranilic acid and its salts and esters. |
Anthranilic acid, and its salts and esters |
8530 |
50% by Weight |
Concentration is based on any combination of anthranilic acid and its salts and esters. |
Benzaldehyde |
8256 |
50% by Weight or Volume |
Benzyl cyanide |
8570 |
20% by Weight or Volume |
Ephedrine, its salts, optical isomers, and salts of optical isomers |
8113 |
Not exempt at any concentration |
Chemical mixtures containing any amount of ephedrine and/or pseudoephedrine, and their salts, optical isomers and salts of optical isomers are not exempt due to concentration, unless otherwise exempted. |
Ergonovine and its salts |
8675 |
Not exempt at any concentration |
Chemical mixtures containing any amount of ergonovine, including its salts, are not exempt. |
Ergotamine and its salts |
8676 |
Not exempt at any concentration |
Chemical mixtures containing amount of any ergotamine, including its salts, are not exempt. |
Ethylamine and its salts |
8678 |
20% by Weight or Volume |
Ethylamine or its salts in an inert carrier solvent is not considered a mixture. Concentration is based on ethylamine in the mixture and not the combination of ethylamine and carrier solvent, if any. |
Gamma-Butyrolactone |
2011 |
70% by weight or volume. |
Hydriodic acid |
6695 |
20% by Weight or Volume |
Iodine |
6699 |
2.2 |
Calculated as weight/volume (w/v). |
Isosafrole |
8704 |
20% by Weight or Volume |
Concentration in a mixture cannot exceed 20% if taken alone or in any combination with safrole. |
Methylamine and its salts |
8520 |
20% by Weight |
Methylamine or its salts in an inert carrier solvent is not considered a mixture. Weight is based on methylamine in the mixture and not the combined weight of carrier solvent, if any. |
3,4-Methylenedioxyphenyl-2-propanone |
8502 |
20% by Weight |
N-Methylephedrine, its salts, optical isomers, and salts of optical isomers |
8115 |
0.1% by Weight |
Concentration based on any combination of salts N-methylephedrine, N-methylpseudoephedrine and their salts, optical isomers and salts of optical isomers. |
N-Methylpseudoephedrine, its salts, optical isomers, and salts of optical isomers |
8119 |
0.1% by Weight |
Concentration based on any combination of N-methylpseudoephedrine, N-methylephedrine, and their salts, optical isomers and salts of optical isomers. |
Nitroethane |
6724 |
20% by Weight or Volume |
Norpseudoephedrine, its salts, optical isomers, and salts of optical isomers |
8317 |
0.6% by Weight |
Concentration based on any combination of norpseudoephedrine, phenylpropanolamine and their salts, optical isomers and salts of optical isomers. |
N-phenethyl-4-piperidone (NPP) |
8332 |
Not exempt at any concentration |
Chemical mixtures containing any amount of NPP are not exempt. |
Phenylacetic acid, and its salts and esters |
8791 |
40% by Weight |
Concentration is based on any combination of phenylacetic acid and its salts and esters. |
|
Phenylpropanolamine, its salts, optical isomers, and salts of optical isomers |
1225 |
0.6% by Weight |
Concentration based on any combination of phenylpropanolamine, norpseudoephedrine and their salts, optical isomers and salts of optical isomers. |
Piperidine, and its salts |
2704 |
20% by Weight or Volume |
Concentration based on any combination of piperidine and its salts. Concentration based on weight if a solid, weight or volume if a liquid. |
Piperonal |
8750 |
20% by Weight or Volume |
Propionic anhydride |
8328 |
20% by Weight or Volume |
Pseudoephedrine, its salts, optical isomers, and salts of optical isomers |
8112 |
Not exempt at any concentration |
Chemical mixtures containing any amount of ephedrine and/or pseudoephedrine, and their salts, optical isomers and salts of optical isomers are not exempt due to concentration, unless otherwise exempted. |
Safrole |
8323 |
20% by Volume |
Concentration in a mixture cannot exceed 20% if taken alone or in any combination with isosafrole. |
Code of Federal Regulations
152
|
List II Chemicals
|
Acetic Anhydride |
8519 |
20% by Weight or Volume |
Acetone |
6532 |
35% by Weight or Volume |
Exports only; Limit applies to acetone or any combination of acetone, ethyl ether, 2-butanone, methyl isobutyl ketone, and toluene if present in the mixture by summing the concentrations for each chemical. |
Benzyl chloride |
8568 |
20% by Weight or Volume |
2-butanone |
6714 |
35% by Weight or Volume |
Exports only; Limit applies to 2-butanone or any combination of acetone, ethyl ether, 2-butanone, methyl isobutyl ketone, and toluene if present in the mixture by summing the concentrations for each chemical. |
Ethyl ether |
6584 |
35% by Weight or Volume |
Exports only; Limit applies to ethyl ether or any combination of acetone, ethyl ether, 2-butanone, methyl isobutyl ketone, and toluene if present in the mixture by summing the concentrations for each chemical. |
Hydrochloric acid |
6545 |
20% by Weight or Volume |
Hydrogen chloride in an inert carrier solvent, such as aqueous or alcoholic solutions, is not considered a mixture. Weight is based on hydrogen chloride in the mixture and not the combined weight of the carrier solvent, if any. |
Methyl isobutyl ketone |
6715 |
35% by Weight or Volume |
Exports only pursuant to § 1310.08
; Limit applies to methyl isobutyl ketone or any combination of acetone, ethyl ether, 2-butanone, methyl isobutyl ketone, and toluene if present in the mixture by summing the concentrations for each chemical. |
Potassium permanganate |
6579 |
15% by Weight |
Sodium Permanganate |
6588 |
15% by Weight |
Sulfuric acid |
6552 |
20% by Weight or Volume |
Sulfuric acid in an inert carrier solvent, such as aqueous or alcoholic solutions, is not considered a mixture. Weight is based on sulfuric acid in the mixture and not the combined weight of the carrier solvent, if any. |
Toluene |
594 |
35% by Weight or Volume |
Exports only; Limit applies to toluene or any combination of acetone, ethyl ether, 2-butanone, methyl isobutyl ketone, and toluene if present in the mixture by summing the concentrations for each chemical. |