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The National Institute for Occupational Safety and Health (NIOSH)
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The National Institute for Occupational Safety and Health (NIOSH)
1. Registry of Toxic Effects of Chemical Substances (RTECS)
Hydantoin, 1,3-dichloro-5,5-dimethyl-
Related Pages
RTECS #
MU0700000
CAS #
118-52-5; 55945-60-3
See: NMAM or OSHA Methods
Updated
September 2013
Molecular Weight
197.03
Molecular Formula
C5H6Cl2N2O2
Synonyms
1,3-Dichloro-5,5-dimethyl hydantoin
1,3-Dichloro-5,5-dimethyl hydantoin (ACGIH:OSHA)
1,3-Dichloro-5,5-dimethyl-2,4-imidazolidinedione
1,3-Dichloro-5,5-dimethylhydantoin
1,3-Dichloro-5,5'-methylhydantoin
1,3-Dwuchloro-5,5-dwumetylohydantoina (Polish)
2,4-Imidazolidinedione, 1,3-dichloro-5,5-dimethyl- (9CI)
Dactin
Daktin
Dantoin
Dichlorantin
Dwuchlorantyny (Polish)
Halane
Hydan
Hydan (antiseptic)
Hydantoin, dichlorodimethyl-
NCI-C03054
Omchlor
Skin and Eye Irritation and References
Route/Organism Dose Effect Reference
skin /rabbit 500 mg/24H severe EPASR* 8EHQ-0281-0382
skin /rabbit 100 mg/24H severe EPASR* 8EHQ-0281-0382
Mutation Data and Reference
System Test Route/Organism/Tissue Dose Reference
morphological transform embryo/rat 6300 ng/plate JJATDK 1,190,1981
sex chromosome loss and nondisjunction parenteral/Drosophila melanogaster 250 ppm ENMUDM 7,677,1985
Acute Toxicity Data and References
Route/Organism Dose Effect Reference
Behavioral: Tremor
inhalation/rat Lowest published lethal concentration: 20 gm/m3/1H Lung, Thorax, or Respiration: Respiratory stimulation EPASR* 8EHQ-0281-0382
Gastrointestinal: Changes in structure or function of salivary glands
Behavioral: Somnolence (general depressed activity)
oral/guinea pig lethal dose (50 percent kill): 1350 mg/kg Behavioral: Withdrawal GISAAA 47(6),76,1982
Lung, Thorax, or Respiration: Dyspnea
Behavioral: Somnolence (general depressed activity)
oral/rabbit lethal dose (50 percent kill): 1520 mg/kg Behavioral: Withdrawal GISAAA 47(6),76,1982
Lung, Thorax, or Respiration: Dyspnea
oral/rat lethal dose (50 percent kill): 542 mg/kg 85INA8 5,183,1986
skin/rabbit lethal dose (50 percent kill): >20 gm/kg EPASR* 8EHQ-0281-0382
unreported route/mammal (species unspecified) lethal dose (50 percent kill): 500 mg/kg GWXXBX #2550828
unreported route/rat lethal dose (50 percent kill): 550 mg/kg BCTKAG 19,52,1986
Other Multiple Dose Data and References
Route/Organism Dose Effect Reference
oral/rat lowest published toxic dose: 8784 mg/kg/28D- intermittent Related to Chronic Data: Death in the "MULTIPLE DOSE" data type field BCTKAG 19,52,1986
Brain and Coverings: Recordings from specific areas of CNS
oral/rat lowest published toxic dose: 634 mg/kg/30D- intermittent Biochemical: Enzyme inhibition, induction, or change in blood or tissue levels: True cholinesterase GISAAA 47(6),76,1982
Biochemical: Enzyme inhibition, induction, or change in blood or tissue levels: Transaminases
Reviews
Organization Standard Reference
American Conference of Governmental Industrial Hygienists (ACGIH) Threshold Limit Value-time-weighted average 0.2 mg/m3;short term exposure limit 0.4 mg/m3 DTLVS* TLV/BEI,2013
Standards and Regulations
Organization Standard Reference
Environmental Protection Agency (EPA) Federal Insecticide, Fungicide, and Rodenticide Act (FIFRA) 1988 PESTICIDE SUBJECT TO REGISTRATION OR RE-REGISTRATION FEREAC 54,7740,1989
Mine Safety and Health Administration (MSHA) STANDARD-air time-weighted average 0.2 mg/m3 DTLVS* 3,78,1971
Occupational Exposure Limit IN ARGENTINA, BULGARIA, COLOMBIA, JORDAN check ACGIH TLV;
Occupational Exposure Limit IN SINGAPORE, VIETNAM check ACGIH TLV
Occupational Exposure Limit-AUSTRALIA time-weighted average 0.2 mg/m3, short term exposure limit 0.4 mg/m3, JUL2008
Occupational Exposure Limit-AUSTRIA MAK-TMW 0.2 mg/m3;KZW 0.4 mg/m3, inhal, 2007
Occupational Exposure Limit-BELGIUM time-weighted average 0.2 mg/m3, short term exposure limit 0.4 mg/m3, MAR2002
Occupational Exposure Limit-DENMARK time-weighted average 0.2 mg/m3, MAY2011
Occupational Exposure Limit-FINLAND time-weighted average 0.2 mg/m3, short term exposure limit 0.6 mg/m3, NOV2011
Occupational Exposure Limit-FRANCE VME 0.2 mg/m3, FEB2006
Occupational Exposure Limit-ICELAND time-weighted average 0.2 mg/m3, NOV2011
Occupational Exposure Limit-KOREA time-weighted average 0.2 mg/m3, short term exposure limit 0.4 mg/m3, 2006
Occupational Exposure Limit-MEXICO time-weighted average 0.2 mg/m3;short term exposure limit 0.4 mg/m3, 2004
Occupational Exposure Limit-NEW ZEALAND time-weighted average 0.2 mg/m3; short term exposure limit 0.4 mg/m3, JAN2002
Occupational Exposure Limit-PERU time-weighted average 0.2 mg/m3; short term exposure limit 0.4 mg/m3, JUL2005
Occupational Exposure Limit-RUSSIA short term exposure limit 2 mg/m3, JUN2003
Occupational Exposure Limit-SWITZERLAND MAK-week 0.2 mg/m3, inhal, JAN2011
Occupational Exposure Limit-THE NETHERLANDS MAC-TGG 0.2 mg/m3, 2003
Occupational Exposure Limit-THE PHILIPPINES time-weighted average 0.2 mg/m3, JAN1993
Occupational Exposure Limit-UNITED KINGDOM time-weighted average 0.2 mg/m3;short term exposure limit 0.4 mg/m3, OCT2007
Occupational Safety and Health Administration (OSHA) Permissible Exposure Limit (Construction) 8H time-weighted average 0.2 mg/m3 CFRGBR 29,1926.55,1994
Occupational Safety and Health Administration (OSHA) Permissible Exposure Limit (Federal Contractors) 8H time-weighted average 0.2 mg/m3 CFRGBR 41,50-204.50,1994
Occupational Safety and Health Administration (OSHA) Permissible Exposure Limit (General Industry) 8H time-weighted average 0.2 mg/m3 CFRGBR 29,1910.1000,1994
Occupational Safety and Health Administration (OSHA) Permissible Exposure Limit (Shipyards) 8H time-weighted average 0.2 mg/m3 CFRGBR 29,1915.1000,1993
NIOSH Documentation and Surveillance
Organization Standard Reference
National Institute for Occupational Safety and Health (NIOSH) Recommended Exposure Level TO THE CHEMICAL-air 10H time-weighted average 0.2 mg/m3;short term exposure limit 0.4 mg/m3 NIOSH* DHHS #92-100,1992
National Occupational Exposure Survey 1983 Hazard Code 24100; Number of Industries 9; Total Number of Facilities 436; Number of Occupations 10; Total Number of Employees Exposed 3502; Total Number of Female Employees Exposed 1780
National Occupational Hazard Survey 1974 Hazard Code 24100; Number of Industries 5; Total Number of Facilities 729; Number of Occupations 6; Total Number of Employees Exposed 2224
Status in Federal Agencies
Organization Reference
EPA TSCA Section 8(b) CHEMICAL INVENTORY
EPA TSCA TEST SUBMISSION (TSCATS) DATA BASE, JANUARY 2001
Page last reviewed: November 16, 2018
Content source: National Institute for Occupational Safety and Health
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