1,3-Dichloro-5,5-dimethylhydantoin
1,3-Dichloro-5,5-dimethylhydantoin (CAS 118-52-5), molecular formula C5H6Cl2N2O2, is a high-purity chemical supplied by Tech Serve Solutions for chemical synthesis applications, to pharmacopoeia specification (USP, BP, EP). Every batch is tested and ships with a Certificate of Analysis; MSDS and technical data sheets are available on request. Tech Serve Solutions has supplied laboratory reagents, fine chemicals and pharmaceutical intermediates worldwide since 1998.
- IUPAC
- 1,3-Dichloro-5,5-dimethyl-2,4-imidazolidinedione,DCDMH,NSC 33307,NSC 38630
- Synonyms
- 118-52-5

| Molecular weight | 197.02 |
|---|---|
| Empirical formula | C5H6Cl2N2O2 |
| Solubility | water: soluble0.21% at 25 °C(lit.)carbon tetrachloride: freely soluble12.5%(lit.)chloroform: freely soluble14%(lit.)methylene chloride: freely soluble30%(lit.)benzene: freely soluble9.2%(lit.)chlorinated solvents: freely soluble at 25 °C(lit.) |
| Application | 1,3-Dichloro-5,5-dimethylhydantoin was used:• in reaction of chlorination of cytosine base1• in the synthesis of α-chloroacetophenones2• as an effective oxidizing agent for the oxidation of urazoles and bis-urazoles to their corresponding triazolinediones3 |
| Melting point | 132-134 °C(lit.) |





Hazard statements
- H272May intensify fire; oxidiser
- H302Harmful if swallowed
- H314Causes severe skin burns and eye damage
- H334May cause allergy or asthma symptoms if inhaled
- H400Very toxic to aquatic life
Precautionary statements
- P220Keep away from clothing and combustible materials
- P261Avoid breathing dust, fume, gas or vapours
- P273Avoid release to the environment
- P280Wear protective gloves, clothing and eye/face protection
- P305IF IN EYES
- P310Immediately call a POISON CENTER or doctor
| Protective equipment | Eyeshields, Faceshields, full-face particle respirator type N100 (US), Gloves, respirator cartridge type N100 (US), type P1 (EN143) respirator filter, type P3 (EN 143) respirator cartridges |
|---|---|
| Transport (UN / ADR) | UN 3085 5.1/PG 2 |
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | O,C,N |
| Risk statements (R) | 8-22-31-34-43-50 |
| Safety statements (S) | 26-36/37/39-45-61 |
| Supplemental hazards | Contact with acids liberates toxic gas. |
Hazard information is provided for guidance. Always consult the product Safety Data Sheet (SDS), available on request, before handling.
Documentation
Supplied to USP, BP and EP standards. Every batch ships with a Certificate of Analysis (assay, identity, purity); MSDS and technical data sheets are available on request.
Supply & logistics
Samples for technical evaluation; bulk MOQ by grade and packaging. In-stock material ships in 7–10 working days, worldwide, with full export documentation.
What is 1,3-Dichloro-5,5-dimethylhydantoin?
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1,3-Dichloro-5,5-dimethylhydantoin (CAS 118-52-5), molecular formula C5H6Cl2N2O2, is a high-purity chemical supplied by Tech Serve Solutions for chemical synthesis applications, to USP, BP and EP standards.
What grades of 1,3-Dichloro-5,5-dimethylhydantoin does Tech Serve Solutions supply?
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Tech Serve Solutions supplies 1,3-Dichloro-5,5-dimethylhydantoin in USP, BP, EP and reagent/AR grades. Custom specifications for nutraceutical or specialty pharmaceutical applications are available — contact our technical sales team.
What is the CAS number and molecular formula of 1,3-Dichloro-5,5-dimethylhydantoin?
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1,3-Dichloro-5,5-dimethylhydantoin has CAS number 118-52-5 and molecular formula C5H6Cl2N2O2. Full specifications appear in the table above and in the Certificate of Analysis.
What is the typical minimum order quantity and lead time for 1,3-Dichloro-5,5-dimethylhydantoin?
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Sample quantities are available for technical evaluation; bulk MOQ depends on grade and packaging. In-stock material typically ships in 7–10 working days; custom-spec orders take 3–4 weeks. Tech Serve Solutions ships worldwide with full export documentation.
Do you provide a Certificate of Analysis (CoA) with each shipment?
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Yes. Every batch of 1,3-Dichloro-5,5-dimethylhydantoin ships with a Certificate of Analysis covering assay, identity and purity tests, plus pharmacopoeia conformance where applicable. MSDS and TDS documents are available on request before order placement.
How should 1,3-Dichloro-5,5-dimethylhydantoin be stored?
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Store 1,3-Dichloro-5,5-dimethylhydantoin in its original sealed container in a cool, dry place away from direct sunlight and incompatible materials, in line with the storage guidance on the Safety Data Sheet. Reseal between dispensings.
What is 1,3-Dichloro-5,5-dimethylhydantoin used for?
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1,3-Dichloro-5,5-dimethylhydantoin is used in chemical synthesis applications across pharmaceutical, research and industrial settings. Our technical team can advise on suitability for your specific process.
How do I request a quote for 1,3-Dichloro-5,5-dimethylhydantoin?
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Request a quote with your required grade, quantity and destination via https://www.techservesolutions.in/contact or email info@techservesolutions.in. We respond with specifications, a Certificate of Analysis and pricing.
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