Skip to Content
Merck
All Photos(3)

Key Documents

View All Documentation

232807

Sigma-Aldrich

1,3-Dichloro-5,5-dimethylhydantoin

available chlorine 68 %

Synonym(s):

1,3-Dichloro-5,5-dimethyl-2,4-imidazolidinedione, DCDMH, NSC 33307, NSC 38630

Sign Into View Organizational & Contract Pricing
All Photos(3)

About This Item

Empirical Formula (Hill Notation):
C5H6Cl2N2O2
CAS Number:
118-52-5
Molecular Weight:
197.02
Beilstein:
146013
EC Number:
204-258-7
MDL number:
MFCD00003190
UNSPSC Code:
12352100
PubChem Substance ID:
24853931
NACRES:
NA.22

form

powder

Quality Level

200

composition

available chlorine, 68%

mp

132-134 °C (lit.)

solubility

water: soluble 0.21% at 25 °C(lit.)
carbon tetrachloride: freely soluble 12.5%(lit.)
chloroform: freely soluble 14%(lit.)
methylene chloride: freely soluble 30%(lit.)
benzene: freely soluble 9.2%(lit.)
chlorinated solvents: freely soluble at 25 °C(lit.)

SMILES string

CC1(C)N(Cl)C(=O)N(Cl)C1=O

InChI

1S/C5H6Cl2N2O2/c1-5(2)3(10)8(6)4(11)9(5)7/h1-2H3

InChI key

KEQGZUUPPQEDPF-UHFFFAOYSA-N

Looking for similar products? Visit Product Comparison Guide

Application

1,3-Dichloro-5,5-dimethylhydantoin was used:
  • in reaction of chlorination of cytosine base
  • in the synthesis of α-chloroacetophenones
  • as an effective oxidizing agent for the oxidation of urazoles and bis-urazoles to their corresponding triazolinediones
Reagent involved in:
  • Microwave-assisted aromatization of trisubstituted pyrazolines
  • Asymmetric chlorolactonization chlorenium source
  • Oxidative chlorination for the synthesis of arenesulfonyl chlorides
  • Selective halogenation for the synthesis of halo ketones
  • Chlorination reactions

Signal Word

Danger

Hazard Statements

H272,H302,H315,H317,H410

Hazard Classifications

Acute Tox. 4 Oral - Aquatic Acute 1 - Aquatic Chronic 1 - Ox. Sol. 2 - Skin Irrit. 2 - Skin Sens. 1

Supplementary Hazards

EUH031

Storage Class Code

5.1B - Oxidizing hazardous materials

WGK

WGK 2

Flash Point(F)

345.2 °F

Flash Point(C)

174 °C

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Choose from one of the most recent versions:

Certificates of Analysis (COA)

Lot/Batch Number
MKCM7829
MKCG5830
MKBK2690V
MKBJ0856V
MKBF8657V

Don't see the Right Version?

If you require a particular version, you can look up a specific certificate by the Lot or Batch number.

Search for a COA

Already Own This Product?

Find documentation for the products that you have recently purchased in the Document Library.

Visit the Document Library

E J Olajos et al.
Journal of applied toxicology : JAT, 18(6), 409-420 (1998-12-05)
Vesication and skin irritation studies were conducted in hairless guinea-pigs to determine the vesicant and skin irritation potential of chemically-neutralized Chemical Agent Identification Sets (CAIS). The CAIS are training items that contain chemical warfare-related material--sulfur mustard (HD), nitrogen mustard (HN)
Akihiro Ohkubo et al.
The Journal of organic chemistry, 74(7), 2817-2823 (2009-03-03)
New 3'-terminal deoxyribonucleoside-loading reagents having a silyl-type linker were developed. They were effectively introduced into polymer supports under the conditions of Huisgen [3 + 2] cycloaddition without base protection. Moreover, four unmodified DNA oligomers d[TACCTAAATCCAX] (X = T, A, C
[Hygienic evaluation of the possible use of 1,3-dichloro-5,5-dimethylhydantoin for the purpose of drinking water decontamination].
A A Semenova et al.
Gigiena i sanitariia, (3)(3), 11-13 (1982-03-01)
Oxidation of urazoles with 1, 3-dihalo-5, 5-dimethylhydantoin, both in solution and under solvent-free conditions.
Zolfigol MA, et al.
Synlett, 5, 761-764 (2005)
Radovan Buffa et al.
Carbohydrate polymers, 250, 116928-116928 (2020-10-15)
Electron-deficient chlorine covalently immobilised on an amido group of hyaluronic acid (HA) can be potentially exceptional for applications requiring biodegradable and biocompatible polymers with enhanced antibacterial or antiviral activity. This expectation is supported by the assumption that a small amount
View All Related Papers

Our team of scientists has experience in all areas of research including Life Science, Material Science, Chemical Synthesis, Chromatography, Analytical and many others.

Contact Technical Service