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1,3-DICHLORO-5,5-DIMETHYL HYDANTOIN†
| CAS # | 118-52-5 |
|---|---|
| Formula |
C₅H₆Cl₂N₂O₂ |
| Synonyms |
Dactin; DDH; Halane |
| Physical description | White powder with a chlorine-like odor. | ||
|---|---|---|---|
| Boiling point | 212° (sublimes) | Molecular weight | 197.0 |
| Freezing point/melting point | 270°F | Vapor pressure | |
| Flash point | 346°F | Vapor density | 6.8 |
| Specific gravity | 1.5 | Ionization potential | |
| Lower explosive limit (LEL) | Upper explosive limit (UEL) | ||
| NFPA health rating | NFPA fire rating | ||
| NFPA reactivity rating | NFPA special instruction | ||
| Vapor hazard ratio (VHR) | |||
| Historical exceedance percentage | |||
| Target organs | |||
* All sampling instructions above are recommended guidelines for OSHA Compliance Safety and Health Officers (CSHOs), please see the corresponding OSHA method reference for complete details.
| Wipe Sampler/Sampling media |
|
|---|---|
| Bulk Method |
|
| Device | |||||
|---|---|---|---|---|---|
| Model/Type | |||||
|
Sampling information (see manufacturer instructions) |
|
OSHA PEL
8-hour TWA (ST) STEL (C) Ceiling Peak |
NIOSH REL
Up to 10-hour TWA (ST) STEL (C) Ceiling |
ACGIH TLV©
8-hour TWA (ST) STEL (C) Ceiling |
|||||
|---|---|---|---|---|---|---|---|
| PEL-TWA |
0.2 mg/m³ |
REL-TWA |
0.2 mg/m³ |
TLV-TWA |
0.2 mg/m³ [1979] |
PEL-TWA |
0.2 mg/m³ |
| PEL-STEL |
|
REL-STEL |
0.4 mg/m³ |
TLV-STEL |
0.4 mg/m³ [1979] |
PEL-STEL |
0.4 mg/m³ |
| PEL-C |
|
REL-C |
|
TLV-C |
|
PEL-C |
|
| Skin notation |
N |
Skin notation |
N |
Skin notation |
N |
Skin notation |
N |
| Notes: |
Notes:
|
Notes:
|
Notes:
|
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| Health factors: See NIH-NLM PubChem. | IDLH |
5 mg/m³ |
|||||
| Carcinogenic classifications: Not listed |
Notes:
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|
AIHA emergency response planning guidelines - ERPG-1/ERPG-2/ERPG-3:
|
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Additional Resources and Literature References
|
NOAA: CAMEO Chemicals - 1,3-Dichloro-5,5-dimethylhydantoin NIOSH: Pocket Guide to Chemical Hazards - 1,3-Dichloro-5,5-dimethylhydantoin Literature References
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Last Updated Date : 12/14/2020