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Regulatory Actions for Year 1983

Year Agency Title CASRN
1983 EPA
Hexafluoropropylene Oxide

EPA proposed test rule under TSCA Section 4.

NTP Information Cited
NTP planning to conduct Ames assay.

  • Type: Proposed Rule
  • December 30, 1983
  • 48 FR 57686
428-59-1
1983 EPA
Cyromazine

EPA issuance of emergency exemptions for use of an unregistered pesticide.

NTP Information Cited
Applicant's earlier request for specific exemption was denied because of results of NTP study of Melamine, a metabolite of Cyromazine.

  • Type: Proposed Rule
  • December 14, 1983
  • 48 FR 55624
108-78-1
1983 EPA
Chlorinated Benzenes

EPA proposed rule to withdraw most testing requirements.

NTP Information Cited
NTP mutagenesis testing of Monochlorobenzene; 1,2,4-Trichlorobenzene and Penta­chloro­phenol. NTP toxicity testing of Monochlorobenzene,ortho and para-Dichlorobenzenes. (TR-255) (TR-261)

  • Type: Proposed Rule
  • December 07, 1983
  • 48 FR 54836
120-82-1
108-90-7
608-93-5
95-50-1
1983 OSHA
Hazard Communication

OSHA final rule setting final occupational safety and health standard requiring hazard assessment and communication to employees of chemical hazard information.

NTP Information Cited
For purposes of hazard communication, OSHA defines a carcinogen as any substance found to be a confirmed or suspected carcinogen by NTP, IARC, or OSHA itself.

  • Type: Notice
  • November 25, 1983
  • 48 FR 53280
N/A
1983 EPA
Formaldehyde

EPA notice of reconsideration as to whether TSCA Section 4f priority consideration is appropriate.

NTP Information Cited
Federal Panel on Formaldehyde, formed by several agencies under the aegis of NTP, reviewed study of Formaldehyde.

  • Type: Notice
  • November 18, 1983
  • 48 FR 52507
50-00-0
1983 EPA
Bis­(2-Ethyl­hexyl­)­Tere­phthalate­; Response to the Interagency Testing Committee

EPA notice that it is not initiating TSCA Section 4 test requirement rulemaking because ongoing tests are expected to provide sufficient information to predict toxicity.

NTP Information Cited
Two chemicals similar to metabolites of DOTP have been nominated for genotoxicity testing by the NTP.

  • Type: Notice
  • November 14, 1983
  • 48 FR 51845
104-76-7
4376-20-9
1983 EPA
Tris

EPA notice that it is not initiating TSCA Section 4A test requirement rulemaking because ongoing tests are expected to provide sufficient information to predict toxicity.

NTP Information Cited
NTP testing of compounds containing the 2-ethylhexyl moiety. (TR-274)

  • Type: Notice
  • November 14, 1983
  • 48 FR 51842
78-42-2
1983 OSHA
Asbestos

OSHA emergency temporary standard to reduce occupational PEL.

NTP Information Cited
NTP studies in which Chrysotile, Amosite, Tremolite, and Crocidolite in feed were administered to lab animals with no increased incidence of tumors.

  • Type: Notice
  • November 04, 1983
  • 48 FR 51086
12001-28-4
12001-29-5
12172-73-5
14567-73-8
1332-21-4
1983 OSHA
Ethylene Dibromide

OSHA NPRM to revise current occupational exposure standard to reduce PEL, restrict dermal exposure, etc.

NTP Information Cited
NTP/NCI inhalation bioassay concluded that EDB was carcinogenic to rats. (TR-210)

  • Type: Notice
  • October 07, 1983
  • 48 FR 45956
106-93-4
1983 EPA
4,4-Methylenedianiline

EPA ANPR of EPA/OSHA joint initiation of regulatory action under TSCA and OSHA Act.

NTP Information Cited
NTP bioassay indicated that the dihydrochloride salt of 4,4-MDA is carcinogenic in both sexes of rats and mice. (TR-248)

  • Type: Notice
  • September 20, 1983
  • 48 FR 42898
13552-44-8
1983 EPA
4,4-Methylenedianiline

EPA notice that it is not initiating a TSCA Section 4A health effects test rule because recent NTP study shows MDA to be carcinogenic in rats and mice.

NTP Information Cited
The data from the NTP bioassay are sufficient...and further oncogenicity testing is unnecessary. (TR-248)

  • Type: Notice
  • July 11, 1983
  • 48 FR 31806
13552-44-8
1983 EPA
Formamide

EPA notice of determination not to require additional health effects testing.

NTP Information Cited
NTP genotoxicity testing, together with importer's subchronic effects testing, make it unnecessary to require Section 4A testing.

  • Type: Notice
  • May 23, 1983
  • 48 FR 23098
75-12-7
1983 EPA
Isophorone

EPA notice that it is not initiating TSCA Section 4A test requirements because of adequate ongoing tests.

NTP Information Cited
NTP long-term bioassay, together with manufacturers' tests, make it unnecessary to require Section 4A testing. (TR-291)

  • Type: Notice
  • January 06, 1983
  • 48 FR 727
78-59-1