EPA starts prioritize 40 chemicals risk evaluation

EPA starts to prioritize 40 chemicals for risk evaluation

6:53 AM, 21st March 2019
EPA logo
The Environmental Protection Agency (EPA) Building in Washington. © AP

WASHINGTON, US: The US Environmental Protection Agency (EPA) is published a list of 40 chemicals to conduct a prioritization process to determine if chemical substances are a high or low priority for risk evaluation.

Prioritization process is the initial step in a new process of reviewing chemicals currently in commerce under the amended Toxic Substances Control Act (TSCA).

The Agency released the list in order to provide the public with an opportunity to submit relevant information such as the uses, hazards, and exposure for these chemicals.

TSCA requires EPA to publish this list of 40 chemicals to begin the prioritization process to designate 20 chemicals as “high-priority” for subsequent risk evaluation and to designate 20 chemicals as “low-priority,” meaning that risk evaluation is not warranted at this time.

One of the chemicals identified for high-priority evaluation is formaldehyde, a chemical that has been studied by EPA for many years.

When prioritization is complete, chemicals designated as high priority will begin a 3-year risk evaluation process to determine if the chemical, under the conditions of use, presents an unreasonable risk to human health and the environment. The designation of a chemical as a low priority means that further risk evaluation is not warranted at this time.

The 20 high priority candidate chemicals include seven chlorinated solvents, six phthalates, four flame retardants, formaldehyde, a fragrance additive, and a polymer pre-curser. They are:

  1. p-Dichlorobenzene
  2. 1,2-Dichloroethane
  3. trans-1,2- Dichloroethylene
  4. o-Dichlorobenzene
  5. 1,1,2-Trichloroethane
  6. 1,2-Dichloropropane
  7. 1,1-Dichloroethane
  8. Dibutyl phthalate (DBP) (1,2-Benzene- dicarboxylic acid, 1,2- dibutyl ester)
  9. Butyl benzyl phthalate (BBP) - 1,2-Benzene- dicarboxylic acid, 1- butyl 2(phenylmethyl) ester
  10. Di-ethylhexyl phthalate (DEHP) - (1,2-Benzene- dicarboxylic acid, 1,2- bis(2-ethylhexyl) ester)
  11. Di-isobutyl phthalate (DIBP) - (1,2-Benzene- dicarboxylic acid, 1,2- bis-(2methylpropyl) ester)
  12. Dicyclohexyl phthalate
  13. 4,4'-(1-Methylethylidene)bis[2, 6-dibromophenol] (TBBPA)
  14. Tris(2-chloroethyl) phosphate (TCEP)
  15. Phosphoric acid, triphenyl ester (TPP)
  16. Ethylene dibromide
  17. 1,3-Butadiene
  18. 1,3,4,6,7,8-Hexahydro-4,6,6,7,8,8-hexamethylcyclopenta [g]-2-benzopyran (HHCB)
  19. Formaldehyde
  20. Phthalic anhydride

The 20 low priority candidate chemicals have been selected from EPA’s Safer Chemicals Ingredients List, which includes chemicals that have been evaluated and determined to meet EPA's safer choice criteria. They are:

  1. 1-Butanol, 3-methoxy-, 1-acetate
  2. D-gluco-Heptonic acid, sodium salt (1:1), (2.xi.)-
  3. D-Gluconic acid
  4. D-Gluconic acid, calcium salt (2:1)
  5. D-Gluconic acid, .delta.-lactone
  6. D-Gluconic acid, potassium salt (1:1)
  7. D-Gluconic acid, sodium salt (1:1)
  8. Decanedioic acid, 1,10-dibutyl ester
  9. 1-Docosanol
  10. 1-Eicosanol
  11. 1,2-Hexanediol
  12. 1-Octadecanol
  13. Propanol, [2-(2-butoxymethylethoxy)methylethoxy]-
  14. Propanedioic acid, 1,3-diethyl ester
  15. Propanedioic acid, 1,3-dimethyl ester
  16. Propanol, 1(or 2)-(2-methoxymethylethoxy)-, acetate
  17. Propanol, [(1-methyl-1,2-ethanediyl)bis(oxy)]bis-
  18. 2-Propanol, 1,1'-oxybis-
  19. Propanol, oxybis-
  20. Tetracosane, 2,6,10,15,19,23-hexamethyl-

“Initiating a chemical for high or low prioritization does not mean EPA has determined it poses unreasonable risk or no risk to human health or the environment; it means we are beginning the prioritization process set forth in Lautenberg,” said Alexandra Dapolito Dunn, Assistant Administrator for EPA’s Office of Chemical Safety and Pollution Prevention. 

“Moving forward evaluating formaldehyde under the TSCA program does not mean that the formaldehyde work done under IRIS will be lost. In fact, the work done for IRIS will inform the TSCA process. By using our TSCA authority EPA will be able to take regulatory steps; IRIS does not have this authority,” added Dunn.

 © Worldofchemicals News

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