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118-52-5

Name 1,3-Dichloro-5,5-dimethylhydantoin
CAS 118-52-5
EINECS(EC#) 204-258-7
Molecular Formula C5H6Cl2N2O2
MDL Number MFCD00003190
Molecular Weight 197.02
MOL File 118-52-5.mol

Chemical Properties

Definition Methionine hydroxy analog c. 90%.
Appearance Powder
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)
Fp  171 °C
storage temp.  Keep in dark place,Sealed in dry,Room Temperature
solubility  water: soluble0.21% at 25°C(lit.)
form  Crystalline Powder
pka -3.44±0.40(Predicted)
color  White
PH 4.4 (H2O)(HSDB)
Stability: Stable, but a strong oxidizer-contact with combustible material may lead to fire. Incompatible with reducing agents, acids, strong bases. Moisture sensitive.
Water Solubility  0.21 g/100 mL (25 ºC)
Sensitive  Moisture Sensitive
Usage Dantoin(R) DCDMH LD (low dust) is an industrial bleaching agent based on dimethyl hydantoin. This product finds application wherever solid bleach is desired.
Merck  14,3065
Sublimation  100 ºC
BRN  146013
Exposure limits NIOSH REL: TWA 0.2, STEL 0.4, IDLH 5; OSHA PEL: TWA 0.2, STEL/C 0.4 (adopted).
InChIKey KEQGZUUPPQEDPF-UHFFFAOYSA-N
LogP -0.94
CAS DataBase Reference 118-52-5(CAS DataBase Reference)
EPA Substance Registry System 118-52-5(EPA Substance)

Safety Data

Hazard Codes  Xn,C,O,N
Risk Statements 
R22:Harmful if swallowed.
R36/37/38:Irritating to eyes, respiratory system and skin .
R34:Causes burns.
R8:Contact with combustible material may cause fire.
R50:Very Toxic to aquatic organisms.
R43:May cause sensitization by skin contact.
R31:Contact with acids liberates toxic gas.
R20/21/22:Harmful by inhalation, in contact with skin and if swallowed .
Safety Statements 
S26:In case of contact with eyes, rinse immediately with plenty of water and seek medical advice .
S36:Wear suitable protective clothing .
S45:In case of accident or if you feel unwell, seek medical advice immediately (show label where possible) .
S36/37/39:Wear suitable protective clothing, gloves and eye/face protection .
S17:Keep away from combustible material .
S61:Avoid release to the environment. Refer to special instructions safety data sheet .
RIDADR  UN 1479 5.1/PG 2
WGK Germany  3
RTECS  MU0700000
TSCA  Yes
HazardClass  5.1
PackingGroup  II
HS Code  29332100
Safety Profile
Moderately toxic by ingestion. Mildly toxic by inhalation. A severe slun irritant. Mutation data reported. Avoid excessive contact because of effects of active chlorine on skin. Some of the hydantoins are central nervous system depressants. Mixtures with xylene may explode. Wdl react with water or steam to produce toxic and corrosive fumes. When heated to decomposition it emits toxic fumes of Cl and NOx. See also CHLORIDES.
Hazardous Substances Data 118-52-5(Hazardous Substances Data)
Toxicity
LD50 oral in rabbit: 1520mg/kg
IDLA 5 mg/m3

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