WHMIS (1,3-Dichloro-5,5-dimethylhydantoin)

Workplace Hazardous Materials Information System

WHMIS 2015 classification - Note to reader
Update: 2015-10-06

  • Acute toxicity - oral - Category 41 2
  • Skin corrosion/irritation - Category 23 4
  • Specific target organ toxicity - single exposure (respiratory tract irritation) - Category 3 - Respiratory tract irritation1 5

  • WHMIS 2015 pictogram : Exclamation mark


Harmful if swallowed (H302)
Causes skin irritation (H315)
May cause respiratory irritation (H335)

Ingredient disclosure


  • ▲1.  American Conference of Governmental Industrial Hygienists, Documentation of the threshold limit values and biological exposure indices / Documentation of TLV's and BEI's. 7th ed. Cincinnati, Ohio : ACGIH. (2001-). Publication #0100Doc. [RM-514008]   http://www.acgih.org
  • ▲2.  Glyco Chemicals Inc, «Letter from Glyco Incorporated to USEPA Regarding Data and Information on Theenclosed Toxicology Reports with Attachments.» In: 1,3,-Dichloro-5,5-dimethyl hydantoin. Springfield : NTIS. (1981). OTS-0205005. [ MO-005079]
  • ▲3.  National Institute for Occupational Safety and Health, RTECS (Registry of Toxic Effects of Chemical Substances). Hamilton (Ont) : Canadian Centre for Occupational Health and Safety.   http://ccinfoweb.ccohs.ca/rtecs/search.html
  • ▲4.  Health Council of the Netherlands, «Committee on Updating of Occupational Exposure Limits. 1,3-Dichloro-5,5-dimethylhydantoin.» In: Health-based Reassessment of Administrative Occupational Exposure Limits. The Hague : Health Council of the Netherlands. (2002). 2000/15OSH/046.   http://www.gezondheidsraad.nl/sites/default/files/00@15046OSH.pdf
  • ▲5.  CDC, 1,3-Dichloro 5-. 1988 OSHA PEL Project Documentation . (1988).   http://www.cdc.gov/niosh/pel88/118-52.html

The [number] refers to the Information SST database of the CNESST Documentation Center.