1,3-Dichloro-5,5-dimethylhydantoin
Synonyms & Trade Names
Dactin, DDH, HalanePhysical Description
White powder with a chlorine-like odor.Molecular Weight
197.0Boiling Point
?Melting Point
270°FSolubility
0.2%Vapor Pressure
?Ionization Potential
?Specific Gravity
1.5Flash Point
346°FUpper Exposive Limit
?Lower Explosive Limit
?Incompatibilities & Reactivities
Water, strong acids, easily oxidized materials such as ammonia salts & sulfidesExposure Routes
inhalation, ingestion, skin and/or eye contactSymptoms
irritation eyes, mucous membrane, respiratory systemTarget Organs
Eyes, respiratory systemPersonal Protection/Sanitation
(See protection codes)Skin:Prevent skin contact
Eyes:Prevent eye contact
Wash skin:When contaminated
Remove:When wet or contaminated
Change:Daily
Provide:Eyewash
First Aid
(See procedures)Eye:Irrigate immediately
Skin:Soap wash promptly
Breathing:Respiratory support
Swallow:Medical attention immediately
Respirator Recommendations
NIOSH/OSHA
Up to 2 mg/m3:
(APF = 10) Any supplied-air respirator
Up to 5 mg/m3:
(APF = 25) Any supplied-air respirator operated in a continuous-flow mode
(APF = 50) Any self-contained breathing apparatus with a full facepiece
(APF = 50) Any supplied-air respirator with a full facepiece
Emergency or planned entry into unknown concentrations or IDLH conditions:
(APF = 10,000) Any self-contained breathing apparatus that has a full facepiece and is operated in a pressure-demand or other positive-pressure mode
(APF = 10,000) Any supplied-air respirator that has a full facepiece and is operated in a pressure-demand or other positive-pressure mode in combination with an auxiliary self-contained positive-pressure breathing apparatus
Escape:
(APF = 50) Any air-purifying, full-facepiece respirator (gas mask) with a chin-style, front- or back-mounted canister providing protection against the compound of concern and having an N100, R100, or P100 filter.
Click here for information on selection of N, R, or P filters.
Any appropriate escape-type, self-contained breathing apparatus
See also
INTRODUCTION- Page last reviewed:April 11, 2016
- Page last updated:April 11, 2016
- Content source:
- National Institute for Occupational Safety and Health (NIOSH) Education and Information Division