The IUPAC name of 1,3-Dichloro-5,5-dimethyl hydantoin is 1,3-dichloro-5,5-dimethylimidazolidine-2,4-dione. With the CAS registry number 118-52-5, it is also named as 2,4-Imidazolidinedione, 1,3-dichloro-5,5-dimethyl-; Hydantoin, 1,3-dichloro-5,5-dimethyl-. The product's categories are miscellaneous, water treatment chemicals, imidazolines / imidazolidines building blocks, halogenated heterocycles and heterocyclic building blocks. It is white powder with a weak chlorine odor which is stable, but a strong oxidizer - contact with combustible material may lead to fire.

The 1,3-Dichloro-5,5-dimethyl hydantoin reacts violently with xylene. At a pH of 9, this chemical decomposes completely. It is incompatible with strong acids, easily oxidized materials, ammonia salts and sulfides. And it will react with water or steam to produce toxic and corrosive fumes.

The other characteristics of this product can be summarized as: (1)ACD/LogP: 1.36; (2)# of Rule of 5 Violations: 0; (3)ACD/LogD (pH 5.5): 1.36; (4)ACD/LogD (pH 7.4): 1.36; (5)ACD/BCF (pH 5.5): 6.31; (6)ACD/BCF (pH 7.4): 6.31; (7)ACD/KOC (pH 5.5): 130.07; (8)#H bond acceptors: 4; (9)#H bond donors: 0; (10)#Freely Rotating Bonds: 0; (11)Index of Refraction: 1.572; (12)Molar Refractivity: 40.81 cm³; (13)Molar Volume: 124 cm³; (14)Polarizability: 16.18×10^-24 cm³; (15)Surface Tension: 55 dyne/cm; (16)Enthalpy of Vaporization: 45.11 kJ/mol; (17)Vapour Pressure: 0.153 mmHg at 25°C.

Uses of 1,3-Dichloro-5,5-dimethyl hydantoin: it is mainly used as disinfectant and algae killer, killing germ, fungus, virus, algae, liver inflame virus etc.,with high stabilization, high content, bland and light odor, slow release. It is widely used for sterilization for swimming pool, tap water, aquaculture, industrial water, environment for hotel, hospital and other public places.

When you are using this chemical, please be cautious about it as the following:
It is harmful by inhalation, in contact with skin and if swallowed. And it is irritating to eyes, respiratory system and skin. In addition, it is very toxic to aquatic organisms. In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. If you want to contact this product, you must wear suitable protective clothing, gloves and eye/face protection. In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.) 

People can use the following data to convert to the molecule structure.
1. SMILES: O=C1N(Cl)C(=O)N(Cl)C1(C)C;
2. InChI: InChI=1/C5H6Cl2N2O2/c1-5(2)3(10)8(6)4(11)9(5)7/h1-2H3.

The following are the toxicity data which has been tested.