This compound group is defined by the SMILES string '[Zr]'. For more information on SMILES, see https://en.wikipedia.org/wiki/Simplified_molecular-input_line-entry_system.

This compound group is populated from some of the aluminum compounds in Pharos. The AOEC listing is applied to the specific chemicals listed in their database rather than the entire group.

This compound group is defined by the SMILES string '[Sb]'. For more information on SMILES, see https://en.wikipedia.org/wiki/Simplified_molecular-input_line-entry_system.

This compound group is defined by the SMILES string '[Be]'. For more information on SMILES, see https://en.wikipedia.org/wiki/Simplified_molecular-input_line-entry_system.

This definition is based on the scope of the IARC listing, most recently in monograph 100C: "Synonyms and molecular formulae for beryllium, beryllium–aluminium and beryllium– copper alloys, and certain beryllium compounds are presented in Table 1.1. The list is not exhaustive, nor does it comprise necessarily the most commercially important beryllium-containing substances; rather, it indicates the range of beryllium compounds available."

http://publications.iarc.fr/120

This compound group is defined by the SMILES string '[Ce]'. For more information on SMILES, see https://en.wikipedia.org/wiki/Simplified_molecular-input_line-entry_system.

This compound group is defined by the SMILES string '[Cr]'. For more information on SMILES, see https://en.wikipedia.org/wiki/Simplified_molecular-input_line-entry_system.

This compound group is populated with copper metal, and a limited number of copper salts and alloys.

This compound group is defined by the SMILES string '[Ge]'. For more information on SMILES, see https://en.wikipedia.org/wiki/Simplified_molecular-input_line-entry_system.

This compound group is defined by the SMILES string '[Mn]'. For more information on SMILES, see https://en.wikipedia.org/wiki/Simplified_molecular-input_line-entry_system.

This compound group is defined by the SMILES string '[Mo]'. For more information on SMILES, see https://en.wikipedia.org/wiki/Simplified_molecular-input_line-entry_system.

This compound group is defined by the SMILES string '[Sr]'. For more information on SMILES, see https://en.wikipedia.org/wiki/Simplified_molecular-input_line-entry_system.

This compound group is defined by the SMILES string '[Tl]'. For more information on SMILES, see https://en.wikipedia.org/wiki/Simplified_molecular-input_line-entry_system.

This compound group is defined by the SMILES string '[Sn]'. For more information on SMILES, see https://en.wikipedia.org/wiki/Simplified_molecular-input_line-entry_system.

This compound group is defined by the SMILES string '[Zn]'. For more information on SMILES, see https://en.wikipedia.org/wiki/Simplified_molecular-input_line-entry_system.

This compound group has not yet been assigned a structural definition.

This compound group is defined by the SMILES string 'C(C(C(C(C(F)(F)S(=O)(=O)N)(F)F)(F)F)(F)F)(C(C(C(F)(F)F)(F)F)(F)F)(F)F'. For more information on SMILES, see https://en.wikipedia.org/wiki/Simplified_molecular-input_line-entry_system.

This compound group is defined by the SMILES string 'C1=C(C(=CC(=C1Cl)Cl)Cl)OCC(=O)O'. For more information on SMILES, see https://en.wikipedia.org/wiki/Simplified_molecular-input_line-entry_system.

This compound group is defined by the SMILES string 'C1=CC(=CC2=C1C=CC(=C2)S(=O)(=O)O)S(=O)(=O)O'. For more information on SMILES, see https://en.wikipedia.org/wiki/Simplified_molecular-input_line-entry_system.

This compound group is defined by the SMILES string 'C1=CC(=CC=C1CC2=CC=C(C=C2)N)N'. For more information on SMILES, see https://en.wikipedia.org/wiki/Simplified_molecular-input_line-entry_system.

This compound group is defined by the SMILES/SMARTS string 'OC(=O)[CD2]=[CD1]' and limited to compounds with a molecular weight < 200 Da. The molecular weight cutoff is arbitrary, but is intended to capture the bulk of the compounds with potential to be used commercially / as monomers without including an overwhelming number of compounds. For more information on SMILES, see https://en.wikipedia.org/wiki/Simplified_molecular-input_line-entry_system.

This compound group has not yet been assigned a structural definition.

This compound group has not yet been assigned a structural definition.

This compound group is defined by the SMILES string 'C[Sb]'. For more information on SMILES, see https://en.wikipedia.org/wiki/Simplified_molecular-input_line-entry_system.

This compound group is defined by the SMILES string 'O[As](=O)(O)O'. For more information on SMILES, see https://en.wikipedia.org/wiki/Simplified_molecular-input_line-entry_system.

This compound group is defined by the SMILES string '[CH]1=[CH][C](=[CH][CH]=C1C2=[CH][CH]=[C]([CH]=[CH]2)[ND1])[ND1]'. For more information on SMILES, see https://en.wikipedia.org/wiki/Simplified_molecular-input_line-entry_system.

This compound group is defined by the SMILES string 'C1=C(C=C(C(=C1Br)O)Br)C#N'. For more information on SMILES, see https://en.wikipedia.org/wiki/Simplified_molecular-input_line-entry_system.

This compound group is populated by its subgroups.

This compound group has not yet been assigned a structural definition.

This compound group has not yet been assigned a structural definition.

This compound group includes both commercially relevant compounds such as Hydrogen Cyanide, Sodium Cyanide, Potassium Cyanide, and Calcium Cyanide, as well as cyanide salts that are less common. 

This compound group is defined by the SMILES string 'CCCC[Sn]CCCC.CCCC[Sn]CCCC'. For more information on SMILES, see https://en.wikipedia.org/wiki/Simplified_molecular-input_line-entry_system.

This compound group is defined by the SMILES string '[CH3][Sn]([CH3])', then subtracting compounds with 3+ methyl ligands. For more information on SMILES, see https://en.wikipedia.org/wiki/Simplified_molecular-input_line-entry_system.

This compound group is defined by the SMILES string 'CCC(C)C1=CC(=CC(=C1O)[N+](=O)[O-])[N+](=O)[O-]'. For more information on SMILES, see https://en.wikipedia.org/wiki/Simplified_molecular-input_line-entry_system.

This compound group is defined by the SMILES string 'CC(C)(C)C1=CC(=CC(=C1O)[N+](=O)[O-])[N+](=O)[O-]'. For more information on SMILES, see https://en.wikipedia.org/wiki/Simplified_molecular-input_line-entry_system.

This compound group is defined by the SMILES string 'CCCCCCCC[Sn]CCCCCCCC'. For more information on SMILES, see https://en.wikipedia.org/wiki/Simplified_molecular-input_line-entry_system.

This compound group is defined by the SMILES string '[CH]1=[CH][CH]=C([CH]=[CH]1)[Sn](C2=[CH][CH]=[CH][CH]=[CH]2)'. For more information on SMILES, see https://en.wikipedia.org/wiki/Simplified_molecular-input_line-entry_system.

This compound group is defined by the SMILES string 'C[F,Cl,Br,I]'. For more information on SMILES, see https://en.wikipedia.org/wiki/Simplified_molecular-input_line-entry_system.

This compound group is defined by the SMILES string 'C1CC(C(CCC(C(CCC(C1Br)Br)Br)Br)Br)Br'. For more information on SMILES, see https://en.wikipedia.org/wiki/Simplified_molecular-input_line-entry_system.

This compound group should include additional isomers. We're starting with 1,2,3,4,5,6 hexaclorocyclohexane isomers, which can be represented by the SMILES string C1(C(C(C(C(C1(Cl)[H])(Cl)[H])(Cl)[H])(Cl)[H])(Cl)[H])(Cl)[H]. For more information on SMILES, see https://en.wikipedia.org/wiki/Simplified_molecular-input_line-entry_system.

This compound group has not yet been assigned a structural definition.

This compound group is defined by the SMILES string '[NH2D3][NH2D3]'. For more information on SMILES, see https://en.wikipedia.org/wiki/Simplified_molecular-input_line-entry_system.

This compound group does not have a definition yet.

This compound group has not yet been assigned a structural definition.

This compound group is defined by the SMARTS string "[NX2:2]=[C:1]=[OX1:3]". For more information on SMARTS, see https://en.wikipedia.org/wiki/Smiles_arbitrary_target_specification.

This compound group was populated by a substructure search in PubChem using the SMILES string for PFHS (perfluorohexanesulfonate), replacing terminal CF3 with CF2 to allow for longer chain lengths:

C(C(C(C(F)(F)S(=O)(=O)[O-])(F)F)(F)F)(C(C(F)F)(F)F)(F)F

This compound group was populated by a substructure search in PubChem using the SMILES string for PFOA, but replacing the terminal CF3 with CF2 to allow for longer chains:

C(=O)(C(C(C(C(C(C(C(F)F)(F)F)(F)F)(F)F)(F)F)(F)F)(F)F)O

Esters and ethers were manually removed.

The list can be derived from the PIC Rotterdam Convention Annex III tables http://www.pic.int/Default.aspx?tabid=1132.

This compound group has not yet been assigned a structural definition.

This compound group is defined by the SMILES string '[As][CH3]'. For more information on SMILES, see https://en.wikipedia.org/wiki/Simplified_molecular-input_line-entry_system.

This group will contain

Monomethylarsonic acid (MMA) C[As](=O)(O)O

Dimethylarsinic acid (DMA) C[As](=O)(C)O

This compound group is defined by the SMILES string '[CH3][NH][NH2]' or the SMARTS string '[CD1][ND2][ND1]'. For more information on SMILES, see https://en.wikipedia.org/wiki/Simplified_molecular-input_line-entry_system.

This compound group is defined by the SMILES string '[Sn][CH2][CH2][CH2][CH3]' subtracting compounds with 2+ butyl ligands. For more information on SMILES, see https://en.wikipedia.org/wiki/Simplified_molecular-input_line-entry_system.

This compound group is defined by the SMILES string '[Sn][CH3]' subtracting compounds with 2+ methyl ligands. For more information on SMILES, see https://en.wikipedia.org/wiki/Simplified_molecular-input_line-entry_system.

This compound group is defined by the SMILES string '[Sn][CH2][CH2][CH2][CH2][CH2][CH2][CH2][CH3]', then subtracting compounds with 2+ octyl ligands. For more information on SMILES, see https://en.wikipedia.org/wiki/Simplified_molecular-input_line-entry_system.

This compound group is defined by the SMILES string '[CH]1=[CH][CH]=C([CH]=[CH]1)[Sn]', then subtracting compounds matching diphenyltin. For more information on SMILES, see https://en.wikipedia.org/wiki/Simplified_molecular-input_line-entry_system.

This compound group is defined by the SMILES string 'O=[Ni]'. For more information on SMILES, see https://en.wikipedia.org/wiki/Simplified_molecular-input_line-entry_system.

"including nickel oxide, nickel-copper oxide, nickel silicate oxides, and complex oxides"

https://www.canada.ca/en/health-canada/services/environmental-workplace-health/reports-publications/environmental-contaminants/canadian-environmental-protection-act-priority-substances-list-assessment-report-nickel-compounds.html

This compound group has not yet been assigned a structural definition.

This compound group is defined by the SMILES string '[CH]1=[CH][CH]=[C]([C](=[CH]1)[ND1])[ND1]'. For more information on SMILES, see https://en.wikipedia.org/wiki/Simplified_molecular-input_line-entry_system.

This compound group is defined by the SMILES string 'POC'. For more information on SMILES, see https://en.wikipedia.org/wiki/Simplified_molecular-input_line-entry_system.

This compound group has not yet been formally defined.

This compound group has not yet been assigned a structural definition.

This compound group is defined by the SMILES string 'C(C(C(C(C(F)(F)S(=O)(=O)O)(F)F)(F)F)(F)F)(C(C(C(F)(F)F)(F)F)(F)F)(F)F'. For more information on SMILES, see https://en.wikipedia.org/wiki/Simplified_molecular-input_line-entry_system.

Compounds that contain one of the following groups: C8F17SO2-, C8F17SO3- or C8F17SO2N-.

Salts of perfluorooctanoic acid (PFOA).

This compound group is defined by the SMILES string '[As][CH]1=[CH][CH]=C([CH]=[CH]1)'. For more information on SMILES, see https://en.wikipedia.org/wiki/Simplified_molecular-input_line-entry_system.

This compound group is defined by a substructure search of PubChem using the SMILES string 'COC(=O)c1[cH][cH][cH][cH]c1C(=O)OC'. For more information on SMILES, see https://en.wikipedia.org/wiki/Simplified_molecular-input_line-entry_system.

This compound group has not yet been assigned a structural definition.

This compound group is defined by the SMARTS string ([NX2:2]=[C:1]=[OX1:3].[NX2:2]=[C:1]=[OX1:3]), subtracting any compounds whose name contains "polymer". This SMARTS search unfortunately captures polymers made from isocyanates, because their structures are often represented by individual monomers. For more information on SMARTS, see https://en.wikipedia.org/wiki/Smiles_arbitrary_target_specification.

This compound group has not yet been assigned a structural definition.

This compound group has not yet been assigned a structural definition.

This compound group is defined by the SMILES string '[CH1]1=[CH1]C(=C([CH1]=C1C2=[CH1]C(=C([CH1]=[CH1]2)[ND1])[ClD1])[ClD1])[ND1]'. For more information on SMILES, see https://en.wikipedia.org/wiki/Simplified_molecular-input_line-entry_system.

This compound group is defined by the SMARTS string '[CH1]1=[CH1]C(=C([CH1]=C1C2=[CH1]C(=C([CH1]=[CH1]2)[ND1])O[CH3])O[CH3])[ND1]'. For more information on SMILES, see https://en.wikipedia.org/wiki/Simplified_molecular-input_line-entry_system.