Low Threshold Materials
The Chemical Facility Anti-Terrorism Standards define chemicals of interest that may be used for terrorism purposes. If University facilities contain these chemicals in quantities that exceed defined thresholds, the Department of Homeland Security (DHS) must be notified and additional security measures may be required. The following list of chemicals have low reporting thresholds. If you currently possess any of the chemicals listed below and have no further use for them, please dispose of them by submitting a regulated waste pickup request.
Acetone cyanohydrin, stabilized CAS: 75-86-5
Aluminum phosphide CAS: 20859-73-8
Arsenic trichloride (aka Arsenous trichloride) CAS: 7784-34-1
Arsine (concentrations > 0.67%) CAS: 7784-42-1
1,4-Bis(2-chloroethylthio)-n-butane CAS: 142868-93-7
Bis(2-chloroethylthio)methane CAS: 63869-13-6
Bis(2-chloroethylthiomethyl)ether CAS: 63918-90-1
1,5-Bis(2-chloroethylthio)-n-pentane CAS: 142868-94-8
1,3-Bis(2-chloroethylthio)-n-propane CAS: 63905-10-2
Bromine pentafluoride CAS: 7789-30-2
Bromine trifluoride CAS: 7787-71-5
Calcium phosphide CAS: 1305-99-3
Chloroacetyl chloride CAS: 79-04-9
2-Chloroethylchloro-methylsulfide CAS: 2625-76-5
Chlorine dioxide CAS: 10049-04-4
Chlorosarin (aka o-Isopropyl methylphosphonochloridate) CAS: 1445-76-7
Chlorosoman (aka o-Pinacolyl methylphosphonochloridate) CAS: 7040-57-5
Chlorosulfonic acid CAS: 7790-94-5
Cyanogen chloride (concentrations > 2.67%) CAS: 506-77-4
DF (aka Methyl phosphonyl difluoride) CAS: 676-99-3
Diborane (concentrations > 2.67%) CAS: 19287-45-7
N,N-(2-diethylamino)ethanethiol CAS: 100-38-9
o,o-Diethyl S-[2-(diethylamino)ethyl]phosphorothiolate CAS: 78-53-5
Diethyl methylphosphonite CAS: 15715-41-0
N,N-Diethyl phosphoramidic dichloride CAS: 1498-54-0
N,N-(2-diisopropylamino)ethanethiol CAS: 108-02-1
N,N-Diisopropyl phosphoramidic dichloride CAS: 23306-80-1
N,N-(2-dimethylamino)ethanethiol CAS: 108-02-1
N,N-Dimethyl phosphoramidic dichloride CAS: 1498-54-0
Dinitrogen tetroxide (concentrations > 2.8%) CAS: 10544-72-6
N,N-(2-dipropylamino)ethanethiol CAS: 5842-06-8
N,N-Dipropyl phosphoramidic dichloride CAS: 40881-98-9
Ethyl phosphonyl difluoride CAS: 753-98-0
Ethylphosphonothioic dichloride CAS: 993-43-1
Fluorine (concentrations > 6.17%) CAS: 7782-41-4
Germanium tetrafluoride (concentrations > 2.11%) CAS: 7783-58-6
HN1 (aka nitrogen mustard-1) (Bis(2-chloroethyl)ethylamine) CAS: 538-07-8
HN2 (aka nitrogen mustard-2) (Bis(2-chloroethyl)methylamine) CAS: 51-75-2
HN3 (aka nitrogen mustard-3) (Tris(2-chloroethyl)amine) CAS: 555-77-1
Hydrogen cyanide (concentrations > 4.67%) (aka Hydrocyanic acid) CAS: 74-90-8
Hydrogen selenide (concentrations > 0.07%) CAS: 7783-07-5
Isopropylphosphonothioic dichloride CAS: 1498-60-8
Isopropylphosphonyl difluoride CAS: 677-42-9
Lewisite 1 (aka 2-Chlorovinyldichloroarsine) CAS: 541-25-3
Lewisite 2 (aka Bis(2-chlorovinyl)chloroarsine) CAS: 40334-69-8
Lewisite 3 (aka Tris(2-chlorovinyl)arsine) CAS: 40334-70-1
Lithium amide CAS: 7782-89-0
Lithium nitride CAS: 26134-62-3
Magnesium phosphide CAS: 12057-74-8
Methyldichlorosilane CAS: 75-54-7
Methylphosphonothioic dichloride CAS: 676-98-2
O-Mustard (T) (aka Bis(2-chloroethylthioethyl)ether) CAS: 63918-89-8
Nitric acid (concentrations > 68.0%) CAS: 7697-37-2
Nitric oxide (concentrations > 3.83%) (aka Nitrogen oxide (NO)) CAS: 10102-43-9
Nitrogen mustard hydrochloride (aka Bis(2-chloroethyl)methylamine hydrochloride) CAS: 55-86-7
Nitrogen trioxide (concentrations > 3.83%) CAS: 10544-73-7
Nitrosyl chloride (concentrations > 1.17%) CAS: 2696-92-6
Oxygen difluoride (concentrations > 0.09%) CAS: 7783-41-7
Phosgene (concentrations > 0.17%) (aka Carbonic dichloride] or [carbonyldichloride) CAS: 75-44-5
Phosphine (concentrations > 0.67%) CAS: 7803-51-2
Phosphorus oxychloride CAS: 10025-87-3
Phosphorus pentasulfide CAS: 1314-80-3
Phosphorus trichloride CAS: 7719-12-2
Potassium phosphide CAS: 20770-41-6
Propylphosphonyl difluoride CAS: 690-14-2
Propylphosphonothioic dichloride CAS: 2524-01-8
QL (aka o-Ethyl-o-2-diisopropylaminoethyl methylphosphonite) CAS: 57856-11-8
Sarin (aka o-Isopropyl methylphosphonofluoridate) CAS: 107-44-8
Selenium hexafluoride (concentrations > 1.67%) CAS: 7783-79-1
Sesquimustard (aka 1,2-Bis(2-chloroethylthio)ethane) CAS: 3563-36-8
Sodium phosphide CAS: 12058-85-4
Soman (aka o-Pinacolyl methylphosphonofluoridate) CAS: 96-64-0
Stibine (concentrations > 0.67%) CAS: 7803-52-3
Strontium phosphide CAS: 12504-16-4
Sulfur mustard (aka Mustard gas (H)) (Bis(2-chloroethyl)sulfide) CAS: 505-60-2
Sulfur tetrafluoride (concentrations > 1.33%) (aka Sulfur fluoride (SF4), (T-4)-) CAS: 7783-60-0
Tabun (aka o-Ethyl-N,N-dimethylphosphoramido-cyanidate) CAS: 77-81-6
Tellurium hexafluoride (concentrations > 0.83%) CAS: 7783-80-4
Thiodiglycol (aka Bis(2-hydroxyethyl)sulfide) CAS: 111-48-8
Titanium tetrachloride CAS: 7550-45-0
Trichlorosilane (aka Silane, trichloro-) CAS: 10025-78-2
VX (aka o-Ethyl-S-2-diisopropylaminoethyl methyl phosphonothiolate) CAS: 50782-69-9
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