1,3-Dichloro-5,5-dimethylhydantoin , ≥97% , 118-52-5

Synonym(s):
1,3-Dichloro-5,5-dimethyl-2,4-imidazolidinedione;DCDMH;NSC 33307;NSC 38630

CAS NO.：118-52-5

Empirical Formula: C5H6Cl2N2O2

Molecular Weight: 197.02

MDL number: MFCD00003190

EINECS: 204-258-7

PRODUCT Properties

• Melting point: 132-134 °C (lit.)
• Boiling point: 214.7±23.0 °C(Predicted)
• Density: 1,5 g/cm³
• vapor pressure: 0.003Pa
• refractive index: 1.5720 (estimate)
• Flash point: 171 °C
• storage temp.: Keep in dark place,Sealed in dry,Room Temperature
• solubility: water: soluble0.21% at 25°C(lit.)
• pka: -3.44±0.40(Predicted)
• form: Crystalline Powder
• color: White
• PH: 4.4 (H2O)(HSDB)
• Water Solubility: 0.21 g/100 mL (25 ºC)
• Sensitive: Moisture Sensitive
• Sublimation: 100 ºC
• Merck: 14,3065
• BRN: 146013
• Exposure limits: NIOSH REL: TWA 0.2, STEL 0.4, IDLH 5; OSHA PEL: TWA 0.2, STEL/C 0.4 (adopted).
• Stability: Stable, but a strong oxidizer - contact with combustible material may lead to fire. Incompatible with reducing agents, acids, strong bases. Moisture sensitive.
• InChIKey: KEQGZUUPPQEDPF-UHFFFAOYSA-N
• LogP: -0.94

Description and Uses

DCDMH is a combustible, white powder witha chlorine-like odor. Molecular weight=197.03; Freezing/Melting point=130℃; Flash point=175℃. HazardIdentification (based on NFPA-704 M Rating System):Health 3, Flammability 1, Reactivity 0 Oxidizer, . Waterreactive; slightly soluble; solubility=0.2%.

Chlorinating agent; disinfectant; laundry bleach; in water treatment; intermediate for drugs; insecticides; polymerization catalyst

Safety

• Symbol(GHS): GHS03,GHS07,GHS09
• Signal word: Danger
• Hazard statements: H272-H302-H315-H317-H410
• Precautionary statements: P210-P220-P273-P280-P301+P312-P302+P352
• Hazard Codes: Xn,C,O,N
• Risk Statements: 22-36/37/38-34-8-50-43-31-20/21/22
• Safety Statements: 26-36-45-36/37/39-17-61
• OEB: C
• OEL: TWA: 0.2 mg/m3, STEL: 0.4 mg/m3
• RIDADR: UN 1479 5.1/PG 2
• WGK Germany: 3
• RTECS: MU0700000
• TSCA: Yes
• HazardClass: 5.1
• PackingGroup: II
• HS Code: 29332100
• Toxicity: LD50 oral in rabbit: 1520mg/kg
• IDLA: 5 mg/m3