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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
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 24
bis(2-ethylhexyl) tetrabromophthalate covering any of the individual isomers and/or combinations thereof

ECHA defined chemical group parent

3 3
C1-C4 Halogenated Hydrocarbons (TRI Category) 03/09/21

This compound group was populated using a list of chemicals that are reportable under the MA Toxics Use Reduction Act (TURA). See https://www.mass.gov/guides/massdep-toxics-use-reduction-program#-listed-chemicals- for more information.

fixed list 343 4
Diisocyanates (TRI Category) 03/09/21

This compound group was populated using a list of chemicals that are reportable under the MA Toxics Use Reduction Act (TURA). See https://www.mass.gov/guides/massdep-toxics-use-reduction-program#-listed-chemicals- for more information.

fixed list 24 7
Dioxin and Dioxin-like Compounds (TRI Category) 03/09/21

This compound group was populated using a list of chemicals that are reportable under the MA Toxics Use Reduction Act (TURA). See https://www.mass.gov/guides/massdep-toxics-use-reduction-program#-listed-chemicals- for more information.

fixed list 17 19
ETHYLENEBISDITHIOCARBAMIC ACID, SALTS AND ESTERS 7 1
Fatty acid dialkylamides and dialkanolamides 2 0
Hexabromocyclodecane (TRI Category) 03/09/21

This compound group was populated using a list of chemicals that are reportable under the MA Toxics Use Reduction Act (TURA). See https://www.mass.gov/guides/massdep-toxics-use-reduction-program#-listed-chemicals- for more information.

fixed list 4 2
methylphenylenediamines, their n- substituted derivatives and their salts 7 1
Monoalkylamines, monoalkanolamines and their salts 18 0
n-substituted derivatives of p-phenylenediamine and their salts 4 0
Nitrate compounds (water dissociable) 0 1
Non hexavalent chromium compounds excluding Chromium III oxides 0 1
Nonphenol Ethoxylates (TRI Category) 03/09/21

This compound group was populated using a list of chemicals that are reportable under the MA Toxics Use Reduction Act (TURA). See https://www.mass.gov/guides/massdep-toxics-use-reduction-program#-listed-chemicals- for more information.

fixed list 205 34
Nonphenols (TRI Category) 03/09/21

This compound group was populated using a list of chemicals that are reportable under the MA Toxics Use Reduction Act (TURA). See https://www.mass.gov/guides/massdep-toxics-use-reduction-program#-listed-chemicals- for more information.

fixed list 9 29
Organophosphate Ester Flame Retardants (OPE FR)

This compound group is populated from combined lists of organophosphorous flame retardants and only includes those that are organophosphate esters. This list is affiliated with Cradle to Cradle Certified® and Green Science Policy Institute.

132 5
Perfluoroheptanoic acid and its salts 04/24/23

ECHA defined chemical group

4 6
Polychlorophenols and their sodium salts 04/13/20 9 2
Polycyclic Aromatic Compounds (TRI Category) 03/09/21

This compound group was populated using a list of chemicals that are reportable under the MA Toxics Use Reduction Act (TURA). See https://www.mass.gov/guides/massdep-toxics-use-reduction-program#-listed-chemicals- for more information.

fixed list 31 6
Silver Compounds 1 1
sunscreens 9 0
Synthetic mineral fiber (except for RCF) 2 4
Thioglycolic acid and its salts

CASRN taken from https://ntp.niehs.nih.gov/ntp/htdocs/chem_background/exsumpdf/sodiumthioglycolate_508.pdf

4 1
thioglycolic acid esters

CASRN taken from https://ntp.niehs.nih.gov/ntp/htdocs/chem_background/exsumpdf/sodiumthioglycolate_508.pdf

1 0
trialkylamines, trialkanolamines and their salts 6 0
Vanadium Compounds 253 1
water soluble zinc salts 7 0
Zirconia Aluminosilicate Refractory Ceramic Fibres

Zirconia 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, silicon and zirconium 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 18
(±)-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

3 5
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 17
1,2-benzenedicarboxylic acid, di-C6-10-alkyl esters or mixed decyl and hexyl and octyl diesters complete 02/27/23

with ≥ 0.3% of dihexyl phthalate (EC No. 201-559-5)

ECHA chemical group parent

2 3
1,6,7,8,9,14,15,16,17,17,18,18-Dodecachloropentacyclo[12.2.1.16,9.02,13.05,10]octadeca-7,15-diene (“Dechlorane Plus”™) complete 02/27/23

covering any of its individual anti- and syn-isomers or any combination thereof

ECHA chemical group parent

11 3
2-(4-tert-butylbenzyl)propionaldehyde and its individual stereoisomers complete 02/27/23

ECHA chemical group parent

0 4
2-ethylhexanoic acid and its salts, with the exception of those specified elsewhere in this Annex complete 05/22/23

ECHA defined chemical group

fixed list 10 4
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 10
2,2-bis(bromomethyl)propane-1,3-diol (BMP); 2,2-dimethylpropan-1-ol, tribromo derivative/3-bromo-2,2-bis(bromomethyl)-1-propanol (TBNPA); 2,3-dibromo-1-propanol (2,3-DBPA) complete 02/27/23

ECHA chemical group parent

0 4
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 5
2,4,5-TRIMETHYLANILINE STRONG ACID SALTS complete

The only strong acid salt found was the HCl salt.

other 2 2
4-heptylphenol, branched and linear complete 02/27/23

substances with a linear and/or branched alkyl chain with a carbon number of 7 covalently bound predominantly in position 4 to phenol, covering also UVCB- and well-defined substances which include any of the individual isomers or a combination thereof

ECHA chemical group parent

other 25 6
4-Nonylphenol, branched and linear, ethoxylated - ECHA complete 02/27/23

substances with a linear and/or branched alkyl chain with a carbon number of 9 covalently bound in position 4 to phenol, ethoxylated covering UVCB- and well-defined substances, polymers and homologues, which include any of the individual isomers and/or combinations thereof

ECHA chemical group parent

228 4
5-sec-butyl-2-(2,4-dimethylcyclohex-3-en-1-yl)-5-methyl-1,3-dioxane [1], 5-sec-butyl-2-(4,6-dimethylcyclohex-3-en-1-yl)-5-methyl-1,3-dioxane [2] complete 02/27/23

full chemical name: 5-sec-butyl-2-(2,4-dimethylcyclohex-3-en-1-yl)-5-methyl-1,3-dioxane [1], 5-sec-butyl-2-(4,6-dimethylcyclohex-3-en-1-yl)-5-methyl-1,3-dioxane [2]

ECHA chemical group parent

16 5
ACRYLATES complete 08/14/19

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.

structure 434 3
Aflatoxins complete 03/08/18

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

6 4
Alkylphenols and related compounds complete 07/28/17

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

other 569 3
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 976 22
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 22
ARISTOLOCHIC ACIDS complete 07/09/19

Aristolochic Acid I and II are the most common.

https://pubchem.ncbi.nlm.nih.gov/source/hsdb/7179

fixed list 3 7
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 46
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 1616 36
ARSENIC, INORGANIC OXIDES complete 08/09/18 This compound group has not yet been assigned a structural definition. other 8 47
Asbestos Fibers complete 06/04/18

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

other 12 12
Azocolourants and Azodyes complete 10/16/20

This compound group is populated from multiple sources, including the AZODYES chemical list at https://comptox.epa.gov/dashboard/chemical_lists/AZODYES.

functional use 323 2
Barium compounds, soluble complete 03/09/20

This compound group is populated from a list of soluble Barium compounds in https://www.atsdr.cdc.gov/toxprofiles/tp24-c4.pdf.

other 11 7
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 1
Bisphenol A (BPA)-based chemicals and polymers complete

This compound group is a curated selection of compounds in the Pharos database whose names include Bisphenol A.

159 1
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
Chlorinated Organic Solvents in Google's MRSL complete 02/12/21

This compound group was populated from the Google Manufacturing Restricted Substances Specification (v1.0) (TTD_3549)

fixed list 20 1
chloroanilines with the exception of those specified elsewhere in Annex VI of Regulation (EC) No 1272/2008 complete

This compound group is composed of the 5 isomers not explicitly included in Annex VI of Regulation (EC) No 1272/2008 (CLP Regulation). Total number of isomers: monochloroanilines (3 isomers), dichloroanilines (6 isomers), trichloroanilines (6 isomers), tetrachloroanilines (3 isomers) and pentachloroaniline (1 isomer). 

  • 3,4-dichloroaniline
  • 3,5-dichloroaniline
  • 2,3,5-trichloroaniline
  • 2,3,6-trichloroaniline
  • 2,3,4,6-tetrachloroaniline

The following isomers are not included, because they are listed in the Annex as of 7/9/19:

fixed list 5 6
Chlorotoluenes complete 05/01/17

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

other 15 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 376 8
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 44
COBALT COMPOUNDS complete

This compound group is defined by the SMILES/SMARTS string "[Co]" 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.

element 1654 23
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 15 0
Color Index (C.I.) Dyes complete 07/19/23

A list of dyes associated with the Color Index list and associated identifiers from Comptox.

functional use 2131 0
Cresol isomers complete This compound group has not yet been assigned a structural definition. other 4 1
Crude and refined coal tars complete 04/01/21

This compound group was populated from existing compound groups for the Cradle to Cradle (C2C) RSL.

48 1
CYANIDE COMPOUNDS complete

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. 

structure 39 8
Cyclocyloxanes - Biomonitoring CA complete

This group is populated from the list at https://biomonitoring.ca.gov/chemicals

fixed list 4 2
Di- and triether of alkanediols and -triols (C3-C8, linear and branched) with epichlorohydrin (content of free epichlorohydrin < 20 ppm, not characterized as H351 or H350) complete 06/17/19 fixed list 16 0
Di-isodecyl phthalate and metabolite complete This compound group has not yet been assigned a structural definition. other 7 0
Di-n-Octyl Phthalate and metabolites complete This compound group has not yet been assigned a structural definition. other 2 0
Dibutyl phthalate and metabolites complete This compound group has not yet been assigned a structural definition. other 2 0
Dichlorobenzenes complete This compound group has not yet been assigned a structural definition. other 5 6
Dichloroethylenes complete This compound group has not yet been assigned a structural definition. other 6 1
dichloropropanes complete This compound group has not yet been assigned a structural definition. other 17 0
Dicyclohexyl phthalate and metabolite complete This compound group has not yet been assigned a structural definition. other 3 0
Diethyl hexyl phthalate and metabolites complete This compound group has not yet been assigned a structural definition. other 12 0
Dimethylarsenic acids complete

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

structure 18 39
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 17
Dinoterb salts and esters complete

This compound group is defined by a substructure search of PubChem the SMILES/SMARTS string "[CH3]C([CH3])([CH3])C1=[CH1]C(=[CH1]C(=C1[OD1])[N+](=O)[O-])[N+](=O)[O-] plus [CH3]C([CH3])([CH3])C1=[CH1]C(=[CH1]C(=C1OC(=O)C)[N+](=O)[O-])[N+](=O)[O-]". The setting "Remove any explicit hydrogens before searching" was deselected from each substructure search. For more information on SMILES, see https://en.wikipedia.org/wiki/Simplified_molecular-input_line-entry_system.

structure 7 9
Dioctyltin dilaurate, stannane, dioctyl-, bis(coco acyloxy) derivs., and any other stannane, dioctyl-, bis(fatty acyloxy) derivs. wherein C12 is the predominant carbon number of the fatty acyloxy moiety complete 02/27/23

ECHA chemical group parent

0 5
dioctyltin dilaurate; stannane, dioctyl-, bis(coco acyloxy) derivs. (ECHA defined) complete 02/27/23

ECHA chemical group parent

2 2
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 19
Endosulfan Isomers complete This compound group was populated from the Stockholm POPs Convention decision http://chm.pops.int/TheConvention/ThePOPs/TheNewPOPs/tabid/2511/Default.aspx fixed list 2 3
Fatty alcohols, saturated, with even-numbered C-chain, number of C-atoms >=16, with terminating OH-group complete 39 0
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 1163 2
Formaldehyde Donors complete 05/29/20

This compound group is populated from a list of chemicals in an ECHA Investigation Report - Formaldehyde and Formaldehyde Releasers as well as manual searches. Report downloaded from https://echa.europa.eu/documents/10162/13641/annex_xv_report_formaldehyde_en.pdf/58be2f0a-7ca7-264d-a594-da5051a1c74b

149-44-0 (Sodium formaldehyde sulfoxylate) was added based on suggestion by GreenSeal, citing https://pubchem.ncbi.nlm.nih.gov/compound/Sodium-hydroxymethanesulfinate and https://www.fishersci.com/store/msds?partNumber=AC149190250&productDescription=SODIUM+FORMALDEHYDESULFO+25KG&vendorId=VN00032119&countryCode=US&language=en 

functional use 187 1
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
Gold salts complete 04/01/21

This compound group was populated using a substructure search of PubChem using the SMILES string [Au].

element 495 1
halogenated monomethyldiphenylmethanes - UN Transport of Dangerous Goods complete 04/28/23 3 1
Halogenated Solvents complete 08/17/23

This compound group is populated by selecting halogenated solvents (excluding salts) from GSPI's Six Classes of Problematic Chemicals - Some Solvents List.

fixed list 973 5
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 5
HBCDD / HBCD isomers complete

This compound group is defined by the SMILES/SMARTS string "C1CC(C(CCC(C(CCC(C1Br)Br)Br)Br)Br)Br" 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 31 11
HBCDD ISOMERS (REACH LIST) complete This compound group is defined by a list in the Annex XIV of REACH ("Authorisation List") available at https://echa.europa.eu/web/guest/addressing-chemicals-of-concern/authorisation/recommendation-for-inclusion-in-the-authorisation-list/authorisation-list fixed list 8 7
Hexabromocyclododecane (HBCDD) complete 02/27/23

Hexabromocyclododecane (HBCDD) and all major diastereoisomers identified

ECHA chemical group parent

7 5
Hydrofluorocarbons (HFCs) in Google's MRSL complete 02/12/21

This compound group was populated from the Google Manufacturing Restricted Substances Specification (v1.0) (TTD_3549)

 

fixed list 19 1
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 275 3
Inorganic cyanide compounds complete 03/12/20

This compound group was manually populated with inorganic cyanide compounds. It is based on an entry in Korea's GHS.

other 22 13
Ioxynil salts complete 07/30/18

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

other 11 0
Iron Oxides (MAK list of 4) complete

This compound group is populated from the MAK list.

fixed list 5 1