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EPA UPDATES TSCA CHEMICAL WORK PLAN LIST FOR CHEMICAL ASSESSMENTS

Posted By ASC, Thursday, October 30, 2014
Updated: Tuesday, May 12, 2015

What’s at Issue: 

The U.S. Environmental Protection Agency (EPA) has updated the list of existing chemicals for assessment under its Toxic Substances Work Plan for Chemical Assessment. According to the agency, the changes reflect updated data submitted to EPA on chemical releases and potential exposures. This represents the first update to the Work Plan list since it was created in February 2012.

What’s New: The changes include the addition of 23 chemicals that will be considered for assessment after 2017.  They are:

  • 1,3-Butadiene - Consumer uses have changed, leading to a higher exposure score
  • 2,5-Furandione - Consumer uses have changed, leading to a higher exposure score
  • 2-Dimethylaminoethanol - Consumer uses have changed, leading to a higher exposure score
  • 2-Hydroxy-4-(octyloxy)benzophenone - Commercial and consumer uses have changed, leading to a higher exposure score
  • 3,3’-Dichloro-benzidine - Reported releases to TRI increased, leading to a higher exposure score
  • 4,4'-(1-Methylethylidene)bis[2,6-dibromophenol] (TBBPA) - Reported releases to TRI increased, leading to a higher exposure score
  • Barium carbonate - Commercial and consumer uses have changed, leading to a higher exposure score
  • Dicyclohexyl phthalate - Production volume increased and types of consumer uses have changed, leading to a higher exposure score
  • isopropylated phenol, phosphate (iPTPP) - Hazard, exposure, and persistence/bioaccumulation rankings are high
  • Molybdenum and Molybdenum Compounds – Increased production volume and consumer and industrial uses, leading to a higher exposure score
  • Pentachlorothiophenol - Increased production volume and industrial uses, leading to a higher exposure score
  • Triphenyl phosphate (TPP) - Hazard exposure rankings are high
  • Bisphenol A (BPA) - Hazard and exposure rankings are high
  • Decabromodiphenyl ether (decaBDE) - Hazard, exposure, and persistence/bioaccumulation rankings are high
  • Hexabromocyclododecane (HBCD) - Hazard, exposure, and persistence/bioaccumulation rankings are high
  • Nonylphenols and nonylphenol ethoxylates (NP/NPE) - Hazard and exposure rankings are high
  • Group of phthalates (dibutyl phthalate (DBP), butyl benzyl phthalate (BBP), di(2-ethylhexyl) phthalate (DEHP), di-n-octyl phthalate (DnOP), di-isononyl phthalate (DINP), di-isodecyl phthalate (DIDP), and di-isobutyl phthalate (DIBP) - Hazard and exposure rankings are high

The update also removes 16 chemicals, most of which are no longer in commerce in the U.S. A potential review of mercury was discontinued because the agency believes the hazards are already well-characterized and risk reduction efforts are in place while quartz was dropped because potential exposures are regulated by Occupational Safety and Health Administration (OSHA). The others include:

  • 1,2,4,5-Tetrachloro-benzene
  • 4-Chloro-2-methylaniline (p-Chloro-o-toluidine)
  • Benz(a)anthracene
  • Dibenz(a,h)anthracene
  • Dibromochloromethane
  • Dichloroacetic acid
  • Hexabromobiphenyl
  • Hexachlorocyclohexane
  • N-Nitroso-ethylamine
  • N-Nitrosodimethylamine
  • Pentabromophenol
  • Polychlorinated naphthalenes
  • Tris(2,3-di bromopropyl) phosphate (TBP)

Click here for a copy of the updated Work Plan with a description of all 90 listed chemicals. 

Why it’s Important: The TSCA Work Plan for Chemical Assessments best reflects the chemicals for which EPA presently has the most concern.  Unless there are further revisions, it should be assumed that the Agency will concentrate hazard assessments, and if warranted, risk reduction actions, on these compounds for the remainder of the decade.

Adhesive and sealant manufacturers should review the recently added chemicals and alert ASC regarding whether any of the recently added chemicals are utilized significantly in their formulations.  

Tags:  ASC Press Releases 

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