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Compound Groups

Compound groups are groups of chemicals that share structural or chemical features. In most cases, hazard lists will assign hazards to individual substances. Compound groups are useful because in some cases, lists will instead identify a group of structurally similar compounds (such as lead compounds) as all having the same hazard. The Pharos staff is in the process of establishing and populating compound groups, and associating warnings from the hazard lists with them. The table below indicates how each compound group is populated, and what is the status of its population.
Compound Groups
COMPOUND GROUP NAME POPULATION STATUS DATE POPULATED DESCRIPTION PROFILE TYPE # MEMBERS # HAZARDS
Polyhalogenated benzenes (NAS OFR subclass) complete 05/21/19

This compound group is populated from a National Academies of Science report "A Class Approach to Hazard Assessment of Organohalogen Flame Retardants (2019)" available at https://www.nap.edu/catalog/25412/a-class-approach-to-hazard-assessment-of-organohalogen-flame-retardants

fixed list 20 17
Polyhalogenated bisphenol aliphatics and functionalized (NAS OFR subclass) complete 05/21/19

This compound group is populated from a National Academies of Science report "A Class Approach to Hazard Assessment of Organohalogen Flame Retardants (2019)" available at https://www.nap.edu/catalog/25412/a-class-approach-to-hazard-assessment-of-organohalogen-flame-retardants

fixed list 42 17
Polyhalogenated carbocycles (NAS OFR subclass) complete 05/21/19

This compound group is populated from a National Academies of Science report "A Class Approach to Hazard Assessment of Organohalogen Flame Retardants (2019)" available at https://www.nap.edu/catalog/25412/a-class-approach-to-hazard-assessment-of-organohalogen-flame-retardants

fixed list 40 17
Polyhalogenated diphenyl ethers (NAS OFR subclass) complete 05/21/19

This compound group is populated from a National Academies of Science report "A Class Approach to Hazard Assessment of Organohalogen Flame Retardants (2019)" available at https://www.nap.edu/catalog/25412/a-class-approach-to-hazard-assessment-of-organohalogen-flame-retardants

fixed list 19 17
Polyhalogenated organophosphates (NAS OFR subclass) complete 05/21/19

This compound group is populated from a National Academies of Science report "A Class Approach to Hazard Assessment of Organohalogen Flame Retardants (2019)" available at https://www.nap.edu/catalog/25412/a-class-approach-to-hazard-assessment-of-organohalogen-flame-retardants

fixed list 38 17
Polyhalogenated phenol derivatives (NAS OFR subclass) complete 05/21/19

This compound group is populated from a National Academies of Science report "A Class Approach to Hazard Assessment of Organohalogen Flame Retardants (2019)" available at https://www.nap.edu/catalog/25412/a-class-approach-to-hazard-assessment-of-organohalogen-flame-retardants

fixed list 10 17
Polyhalogenated phenol-aliphatic ethers (NAS OFR subclass) complete 05/21/19

This compound group is populated from a National Academies of Science report "A Class Approach to Hazard Assessment of Organohalogen Flame Retardants (2019)" available at https://www.nap.edu/catalog/25412/a-class-approach-to-hazard-assessment-of-organohalogen-flame-retardants

fixed list 14 17
Polyhalogenated phthalates/benzoates/imides (NAS OFR subclass) complete 05/21/19

This compound group is populated from a National Academies of Science report "A Class Approach to Hazard Assessment of Organohalogen Flame Retardants (2019)" available at https://www.nap.edu/catalog/25412/a-class-approach-to-hazard-assessment-of-organohalogen-flame-retardants

fixed list 21 17
Polyhalogenated triazines (NAS OFR subclass) complete 05/21/19

This compound group is populated from a National Academies of Science report "A Class Approach to Hazard Assessment of Organohalogen Flame Retardants (2019)" available at https://www.nap.edu/catalog/25412/a-class-approach-to-hazard-assessment-of-organohalogen-flame-retardants

fixed list 7 17
Halogenated Flame Retardants (HFRs) incomplete 05/01/19

This compound group is populated by its subgroups, including a National Academies of Science report "A Class Approach to Hazard Assessment of Organohalogen Flame Retardants (2019)" available at https://www.nap.edu/catalog/25412/a-class-approach-to-hazard-assessment-of-organohalogen-flame-retardants

functional use 805 15
ORGANOPHOSPHOROUS COMPOUNDS complete 09/13/18

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.

structure 3176 1
Formaldehyde compounds and polymers complete 09/11/18

This compound group was populated by searching ChemIDplus for all compounds whose name contained "formaldehyde". Additionally, it contains the compounds in its subgroups. 

other 1173 4
ARSENIC, INORGANIC OXIDES complete 08/09/18 This compound group has not yet been assigned a structural definition. other 8 58
Germanium Compounds complete 08/09/18

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.

element 1206 1
Manganese Compounds complete 08/09/18

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.

element 614 7
Molybdenum Compounds complete 08/09/18

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.

element 391 4
Barium Salts complete 08/03/18

This compound group is defined by the SMILES string '[BaD0]'. For more information on SMILES, see https://en.wikipedia.org/wiki/Simplified_molecular-input_line-entry_system.

573 3
Inorganic Ammonium Salts complete 08/01/18

This compound group is defined by the SMILES string '[NH4] subtracting [NH4].C'. For more information on SMILES, see https://en.wikipedia.org/wiki/Simplified_molecular-input_line-entry_system.

other 277 5
Cerium Compounds complete 07/31/18

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.

element 349 1
Ioxynil salts complete 07/30/18

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

other 11 0
Thallium Compounds complete 07/30/18

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.

element 216 5
Dimethyltin derivatives complete 07/26/18

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.

structure 276 28
Diphenyltin derivatives complete 07/26/18

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.

structure 153 30
Monomethyltin derivatives complete 07/26/18

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.

structure 95 28
Monophenyltin derivatives complete 07/26/18

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.

structure 70 30
Antimony Compounds complete 06/06/18

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.

element 978 28
Antimony Compounds, Organic complete 06/06/18

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.

structure 239 28
Asbestos Fibers complete 06/04/18

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

other 12 16
Aflatoxins complete 03/08/18

Group members were obtained from IARC VOL.: 82 (2002) (p. 171)

6 5
CHROMIUM (III) COMPOUNDS complete 11/17/17 This compound group is defined by the SMILES string '[Cr+3]'. For more information on SMILES, see https://en.wikipedia.org/wiki/Simplified_molecular-input_line-entry_system. element 382 10
CHROMIUM (VI) COMPOUNDS complete 11/17/17 This compound group is defined by the SMILES string '[Cr+6]'. For more information on SMILES, see https://en.wikipedia.org/wiki/Simplified_molecular-input_line-entry_system. other 152 54
cobalt compounds that release cobalt ions in vivo complete 10/31/17

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

fixed list 16 1
Alkylphenols and related compounds complete 07/28/17

This group is populated by more specific groups of alkylphenols and alkylphenol ethoxylates.

other 587 5
POLYISOCYANATE COMPOUNDS complete 07/24/17

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.

structure 577 4
ISOCYANATES complete 07/19/17

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.

structure 2938 3
Halogenated Solvents - City of Portland, OR complete 05/17/17

Includes chemicals from https://www.portlandoregon.gov/water/article/28482

1-Chlorobutane (CAS 109-69-3) added by suggestion of GreenSeal citing https://pubchem.ncbi.nlm.nih.gov/compound/1-Chlorobutane#section=Use-Classification

functional use 88 9
Chlorotoluenes complete 05/01/17

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

other 15 9
Arsenic Acid Salts complete 08/15/16

This compound group is defined by the SMILES/SMARTS string "[OD1][As](=[OD1])([OD1])[OD1]" and populated from a substructure search of PubChem.. For more information on SMILES, see https://en.wikipedia.org/wiki/Simplified_molecular-input_line-entry_system.

structure 154 57
ARSENIC COMPOUNDS, ORGANIC complete 08/15/16 This compound group is defined by the SMILES string 'C[As]'. For more information on SMILES, see https://en.wikipedia.org/wiki/Simplified_molecular-input_line-entry_system. structure 1615 46
SELENIUM COMPOUNDS complete 08/15/16 This compound group is defined by the SMILES string '[Se]'. For more information on SMILES, see https://en.wikipedia.org/wiki/Simplified_molecular-input_line-entry_system. element 3204 15
(±)-1,7,7-trimethyl-3-[(4-methylphenyl)methylene]bicyclo[2.2.1]heptan-2-one covering any of the individual isomers and/or combinations thereof (4-MBC) complete

Ful name: (±)-1,7,7-trimethyl-3-[(4-methylphenyl)methylene]bicyclo[2.2.1]heptan-2-one covering any of the individual isomers and/or combinations thereof (4-MBC)

ECHA chemical group parent

8 8
(3,3,4,4,5,5,6,6,7,7,8,8,8-tridecafluorooctyl)silanetriol and any of its mono-, di- or tri-O-(alkyl) derivatives incomplete

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

structure 0 5
(R)-1-(2-Piperidyl)acetone incomplete This compound group has not yet been assigned a structural definition. structure 1 1
1-Heptanesulfonamide, decafluorinated compounds (CA SCP list) complete

This compound group is populated from the CA Safer Consumer Products list at https://dtsc.ca.gov/scp/.

fixed list 10 28
1-Methoxy-2,4-diaminobenzene and its salts incomplete This compound group has not yet been assigned a structural definition. structure 1 1
1-Octanesulfonamide, heptadecafluorinated compounds and salts incomplete

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.

structure 14 0
1,2,3,4,5,6-hexachlorcyclohexanes with the exception of those specified elsewhere in Annex VI of Regulation (EC) No 1272/2008 incomplete

This compound group is populated by taking the more general compound group and subtracting the chemicals found in the relevent Annex.

0 8
11-α-Hydroxypregn-4-ene-3,20-dione and its esters incomplete This compound group has not yet been assigned a structural definition. structure 1 1
2-(4-Allyl-2-methoxyphenoxy)-N,N-diethylacetamide and its salts incomplete This compound group has not yet been assigned a structural definition. structure 1 1
2-Hydrazinoethanol, salts incomplete

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

other 0 1
2-Methylheptylamine and its salts incomplete This compound group has not yet been assigned a structural definition. structure 1 1
2-Naphthalenecarboxamide derivatives incomplete

This compound group is defined by the SMILES string 'C1=CC=C2C=C(C=CC2=C1)C(=O)N'. For more information on SMILES, see https://en.wikipedia.org/wiki/Simplified_molecular-input_line-entry_system.

other 268 0
2-Naphthalenol (and compounds) incomplete

This compound group is defined by the SMILES string 'C1=CC=C2C=C(C=CC2=C1)O'. For more information on SMILES, see https://en.wikipedia.org/wiki/Simplified_molecular-input_line-entry_system.

other 156 0
2-naphthylamine salts complete

This compound group is defined by a substructure search of PubChem the SMILES/SMARTS string "[CH1]2=[CH1][CH1]=C1[CH1]=C([CH1]=[CH1]C1=[CH1]2)[ND1]". The setting "Remove any explicit hydrogens before searching" was deselected from the substructure search. For more information on SMILES, see https://en.wikipedia.org/wiki/Simplified_molecular-input_line-entry_system.

 

structure 8 14
2,3,3,3-tetrafluoro-2-(heptafluoropropoxy)propionic acid, its salts and its acyl halides complete

covering any of their individual isomers and combinations thereof

ECHA chemical group parent

6 8
2,4-Diaminophenylethanol and its salts incomplete This compound group has not yet been assigned a structural definition. structure 1 1
2,4-Dichloro-6-nitrophenol, salts incomplete

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

other 0 1
2,4-Dichlorophenoxy-acetic acid salts and esters incomplete This compound group is defined by the SMILES string 'C1=CC(=C(C=C1Cl)Cl)OCC(=O)O'. For more information on SMILES, see https://en.wikipedia.org/wiki/Simplified_molecular-input_line-entry_system. other 0 0
2,4,5-T salts and esters incomplete

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.

structure 5 8
2,4,5-TRIMETHYLANILINE STRONG ACID SALTS complete

The only strong acid salt found was the HCl salt.

other 2 3
2,7-Naphthalenedisulfonic acids (and salts of) incomplete

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.

structure 601 0
3-Pyridinecarbonitrile (and related compounds) incomplete

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

other 115 0
3,3'-DIMETHOXYBENZIDINE-BASED DYES incomplete

This compound group was populated from a National Toxicology Program "FINAL Report on Carcinogens Background Document for Dyes Metabolized to 3,3′-Dimethylbenzidine" at https://ntp.niehs.nih.gov/ntp/newhomeroc/roc10/dmob_no_appendices_508.pdf.

other 7 8
3,3'-DIMETHYLBENZIDINE-BASED DYES incomplete

This compound group was populated from a National Toxicology Program "FINAL Report on Carcinogens Background Document for Dyes Metabolized to 3,3′-Dimethylbenzidine" at https://ntp.niehs.nih.gov/ntp/newhomeroc/roc10/dmb_no_appendices_508.pdf.

other 9 7
4-Ethoxy-m-phenylenediamine and its salts incomplete This compound group has not yet been assigned a structural definition. structure 1 1
4-Methoxy-m-phenylenediamine and its sulfate salts incomplete This compound group has not yet been assigned a structural definition. structure 1 1
4-Methyl-m-phenylenediamine and its salts incomplete This compound group has not yet been assigned a structural definition. structure 1 1
4-Nonylphenol, branched and linear, ethoxylated substances incomplete

This compound group was populated from reports provided by the US EPA, Canadian government, and ECHA, as well as searches for 'nonylphenol' in the ECHA C&L Inventory and in PubChem.

https://www.canada.ca/en/environment-climate-change/services/national-pollutant-release-inventory/report/sector-specific-tools-calculate-emissions/list-nonylphenol-ethoxylates.html

https://www.epa.gov/toxics-release-inventory-tri-program/addition-npes-category-tri-list-proposed-rule

http://echa.europa.eu/documents/10162/f24cf2d8-11d5-4495-9e18-065b34e94e0b

https://echa.europa.eu/information-on-chemicals/cl-inventory-database

https://pubchem.ncbi.nlm.nih.gov/

 

other 248 42
4-NONYLPHENOLS (linear and branched) incomplete This compound group has not yet been assigned a structural definition. other 17 36
4,4'-[2,2,2-trifluoro-1-(trifluoromethyl)ethylidene]diphenol and its salts fixed list 9 2
4,4'-diarylazo-3,3'-dimethylbiphenyl dyes, with the exception of those mentioned elsewhere in Annex VI of Regulation (EC) No 1272/2008 incomplete

This compound group is populated by taking the more general compound group and subtracting the chemicals found in the relevent Annex.

0 15
4,4'-Methylenedianiline, 4,4'-Diaminodiphenylmethane (MDA) incomplete

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.

structure 3 0
5-sec-butyl-2-(2,4- dimethylcyclohex-3- en-1-yl)-5-methyl1,3-dioxane [1], 5- sec-butyl-2-(4,6- dimethylcyclohex-3- en-1-yl)-5-methyl1,3-dioxane [2] [covering any of the individual stereoisomers of [1] and [2] or any combination thereof] (karanal group) incomplete

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

0 2
9,10-Anthracenedione, and related compounds incomplete

This compound group is defined by the SMILES string 'C1=CC=C2C(=C1)C(=O)C3=CC=CC=C3C2=O'. For more information on SMILES, see https://en.wikipedia.org/wiki/Simplified_molecular-input_line-entry_system.

other 504 0
Acetylcholine and its salts, (2-Acetoxyethyl)trimethylammonium hydroxide incomplete This compound group has not yet been assigned a structural definition. structure 1 1
ACID ANHYDRIDES incomplete This compound group is defined by the SMILES string 'C1~CC(=O)OC1=O'. For more information on SMILES, see https://en.wikipedia.org/wiki/Simplified_molecular-input_line-entry_system. other 8 2
Acid mists, strong inorganic incomplete

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

0 2
Acids generated from chromium trioxide and their oligomers incomplete This compound group has not yet been assigned a structural definition. other 10 15
Additive Phosphorous Flame Retardants - Apple RSL complete

This compound group is populated from Apple's Regulated Substances Specification

fixed list 67 0
Adhesive monomers Group I - Apple RSL complete

This compound group is populated from Apple's Regulated Substances Specification

fixed list 17 2
Adhesive monomers Group II - Apple RSL complete fixed list 21 2
Alkali persulfates incomplete

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

other 0 1
alkali salts and alkali earth salts of thiocyanic acid incomplete

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

structure 1 0
alkali salts and alkali earth salts of thiocyanic acid, with the exception of those specified elsewhere in this Annex incomplete

This compound group is populated by taking the more general compound group and subtracting the chemicals found in the relevent Annex.

0 4
Alkanes, C6-C28 chloro- factions incomplete This compound group has not yet been assigned a structural definition. other 7 6
Alkanes, Petroleum gas (C1-C5 various factions) incomplete This compound group has not yet been assigned a structural definition. other 5 0
Alkenes, C12-14, hydroformylation products, (and distn. residues, ethoxylated or propoxylated), dihydrogen phosphates, sodium salts incomplete This compound group has not yet been assigned a structural definition. other 2 0
Alkylphenol Ethoxylates incomplete

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

other 419 6
Alkylpyrrolidones incomplete

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

structure 7 0
Alloclamide and its salts incomplete This compound group has not yet been assigned a structural definition. structure 1 1
alpha-Chlorinated toluenes complete

From IARC: mixture of Benzoyl chloride [98-88-4], Benzyl chloride [100-44-7], Benzyl dichloride [98-87-3], and Benzyl trichloride [98-07-7]

fixed list 4 4
aluminium alkyls incomplete

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

other 0 9
Aluminium zirconium chloride hydroxide glycine complexes incomplete This compound group has not yet been assigned a structural definition. structure 1 1
Aluminosilicate Refractory Ceramic Fibres

Aluminosilicate Refractory Ceramic Fibres are fibres covered by index number 650-017-00-8 in Annex VI, part 3, table 3.1 of Regulation (EC) No 1272/2008 of the European Parliament and of the Council of 16 December 2008 on classification, labelling and packaging of substances and mixtures, and fulfil the three following conditions:  a) oxides of aluminium and silicon are the main components present (in the fibres) within variable concentration ranges b) fibres have a length weighted geometric mean diameter less two standard geometric errors of 6 or less micrometres (µm) c) alkaline oxide and alkali earth oxide (Na2O+K2O+CaO+MgO+BaO) content less or equal to 18% by weight.

ECHA chemical group parent

1 29
ALUMINUM COMPOUNDS in progress

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.

element 105 6
Aminoglycosides incomplete

This group has not been assigned a structural definition yet.

0 5
Amitriptyline and its salts incomplete This compound group has not yet been assigned a structural definition. structure 1 1
Amorphous silica subgroups (MAK list) incomplete

This compound group has been populated using subgroups listed by MAK Commission of Germany.

other 15 1
Amylases incomplete This compound group has not yet been assigned a structural definition. functional use 25 1
amylases with the exception of those specified elsewhere in this Annex incomplete

This compound group is populated by taking the more general compound group and subtracting the chemicals found in the relevent Annex.

14 3