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Product FOB Price Min.Order Supply Ability Supplier
1,3-Dichloro-5,5-dimethylhydantoin
Cas No: 118-52-5
No Data 1 Kilogram 30 Metric Ton/Month Simagchem Corporation Contact Supplier
DCDMH
Cas No: 118-52-5
No Data 10 Metric Ton 800 Metric Ton/Month Hefei TNJ chemical industry co.,ltd Contact Supplier
1,3-dichloro-5,5-dimethylhydantoin
Cas No: 118-52-5
USD $ 2.0-3.0 / Kilogram 1 Kilogram 50 Metric Ton/Day EAST CHEMSOURCES LIMITED Contact Supplier
Amadis Chemical offer CAS#118-52-5;CAT#A804047
Cas No: 118-52-5
No Data 10 Milligram Amadis Chemical Co., Ltd. Contact Supplier
Factory supply high quality 1,3-Dichloro-5,5-dimethylhydantoin;118-52-5
Cas No: 118-52-5
No Data No Data Metric Ton/Day Hubei Taiho Chemical Co.,LTD Contact Supplier
1,3-Dichloro-5,5-dimethylhydantoin
Cas No: 118-52-5
No Data No Data No Data Chemwill Asia Co., Ltd. Contact Supplier
1,3-Dichloro-5,5-dimethylhydantoin
Cas No: 118-52-5
USD $ 5.0-5.0 / Kilogram 1 Kilogram 1000 Kilogram/Month Enke Pharma-tech Co.,Ltd. (Cangzhou, China ) Contact Supplier
1,3-Dichloro-5,5-dimethylhydantoin/DCDMH CAS.:118-52-5
Cas No: 118-52-5
USD $ 1.0-2.0 / Metric Ton 5 Metric Ton 2500 Metric Ton/Year Henan Sinotech Import&Export Corporation Contact Supplier
1,3-Dichloro-5,5-dimethylhydantoin
Cas No: 118-52-5
USD $ 6.0-6.0 / Kilogram 1 Kilogram 1-10 Metric Ton/Month Dayang Chem (Hangzhou) Co.,Ltd. Contact Supplier
Factory Supply 1,3-Dichloro-5,5-dimethylhydantoin (DCDMH)
Cas No: 118-52-5
USD $ 1.0-3.0 / Gram 100 Gram 360 Metric Ton/Day Ality Chemical Corporation Contact Supplier

118-52-5 Usage

General Description

White powder with a weak chlorine odor. Conflagrates at 414°F (turns brown). Chlorine gas evolves > 410°F.

Fire Hazard

Flash point data for 1,3-Dichloro-5,5-dimethylhydantoin are not available. 1,3-Dichloro-5,5-dimethylhydantoin is probably combustible.

Purification Methods

Purify it by dissolving in conc H2SO4 and diluting with ice H2O, collect the solid, dry it in a vacuum and recrystallise it from CHCl3. It sublimes at 100o in a vacuum. It exhibits time-dependent hydrolysis at pH 9. [Petterson & Grzeskowiak J Org Chem 24 1414 1959, Beilstein 24 III/IV 1100.]

Uses

Dantoin(R) DCDMH LD (low dust) is an industrial bleaching agent based on dimethyl hydantoin. This product finds application wherever solid bleach is desired.

Reactivity Profile

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

Uses

Dantoin(R) DCDMH is an industrial bleaching agent based on dimethyl hydantoin. This product finds application wherever solid bleach is desired.

Air & Water Reactions

Sensitive to exposure to light, air, and moisture. Reacts with water or steam to produce toxic and corrosive fumes.

Chemical Properties

Powder
InChI:InChI=1/C5H6Cl2N2O2/c1-5(2)3(10)8(6)4(11)9(5)7/h1-2H3

118-52-5 Well-known Company Product Price

Brand (Code)Product description CAS number Packaging Price Detail
Aldrich (232807)  1,3-Dichloro-5,5-dimethylhydantoin  available chlorine 68 % 118-52-5 232807-1KG 589.68CNY Detail
Aldrich (232807)  1,3-Dichloro-5,5-dimethylhydantoin  available chlorine 68 % 118-52-5 232807-250G 380.25CNY Detail
Alfa Aesar (A12718)  1,3-Dichloro-5,5-dimethylhydantoin, 98%    118-52-5 2500g 1254.0CNY Detail
Alfa Aesar (A12718)  1,3-Dichloro-5,5-dimethylhydantoin, 98%    118-52-5 500g 480.0CNY Detail
Alfa Aesar (A12718)  1,3-Dichloro-5,5-dimethylhydantoin, 98%    118-52-5 100g 229.0CNY Detail

118-52-5SDS

SAFETY DATA SHEETS

According to Globally Harmonized System of Classification and Labelling of Chemicals (GHS) - Sixth revised edition

Version: 1.0

Creation Date: Aug 10, 2017

Revision Date: Aug 10, 2017

1.Identification

1.1 GHS Product identifier

Product name 1,3-Dichloro-5,5-dimethylhydantoin

1.2 Other means of identification

Product number -
Other names 1,3-Dichloro-5,5-dimethyl-2,4-imidazolidinedione DCDMH

1.3 Recommended use of the chemical and restrictions on use

Identified uses For industry use only.
Uses advised against no data available

1.4 Supplier's details

1.5 Emergency phone number

Emergency phone number -
Service hours Monday to Friday, 9am-5pm (Standard time zone: UTC/GMT +8 hours).

More Details:118-52-5 SDS

118-52-5Synthetic route

5,5-dimethyl-imidazolidine-2,4-dione
77-71-4

5,5-dimethyl-imidazolidine-2,4-dione

1,3-dichloro-5,5-dimethylhydantoin
118-52-5

1,3-dichloro-5,5-dimethylhydantoin

Conditions
ConditionsYield
Stage #1: 5,5-dimethyl-imidazolidine-2,4-dione With sodium carbonate at 20℃; for 6h;
Stage #2: With chlorine In tetrahydrofuran; ethyl acetate at 100℃; for 7h; Concentration; Microwave irradiation;
98.72%
With trichloroisocyanuric acid In acetonitrile at 20℃; for 0.5h;87%
With water; chlorine at 8 - 10℃;
sodium cyanide
143-33-9

sodium cyanide

acetone
67-64-1

acetone

2CO3

2CO3

1,3-dichloro-5,5-dimethylhydantoin
118-52-5

1,3-dichloro-5,5-dimethylhydantoin

Conditions
ConditionsYield
With water anschliessend mit wss. NaOH und Chlor;
With water anschliessend mit wss. KOH und Chlor;
5,5-dimethyl-imidazolidine-2,4-dione
77-71-4

5,5-dimethyl-imidazolidine-2,4-dione

aqueous Na2CO3

aqueous Na2CO3

1,3-dichloro-5,5-dimethylhydantoin
118-52-5

1,3-dichloro-5,5-dimethylhydantoin

Conditions
ConditionsYield
With chlorine
(1-Cyan-1-methylethyl)harnstoff
79662-84-3

(1-Cyan-1-methylethyl)harnstoff

1,3-dichloro-5,5-dimethylhydantoin
118-52-5

1,3-dichloro-5,5-dimethylhydantoin

Conditions
ConditionsYield
Multi-step reaction with 2 steps
1: hydrochloric acid
2: water; chlorine / 8 - 10 °C
View Scheme
isoquinoline
119-65-3

isoquinoline

1,3-dichloro-5,5-dimethylhydantoin
118-52-5

1,3-dichloro-5,5-dimethylhydantoin

5,8-dichloroisoquinoline
73075-59-9

5,8-dichloroisoquinoline

Conditions
ConditionsYield
Stage #1: isoquinoline With sulfuric acid at 2 - 21℃; for 0.25h;
Stage #2: 1,3-dichloro-5,5-dimethylhydantoin at 10 - 55℃; for 18.5h; regioselective reaction;
98%
1,3-dichloro-5,5-dimethylhydantoin
118-52-5

1,3-dichloro-5,5-dimethylhydantoin

1,3-di(chlorothio)-5,5-dimethylhydantoin
104867-38-1

1,3-di(chlorothio)-5,5-dimethylhydantoin

Conditions
ConditionsYield
With tetraethylammonium bromide; sulfur In 1,2-dichloro-ethane 1.) 50 deg C, 1 hr., 2.) 80 deg C, 30 min.;92%
1,3-dichloro-5,5-dimethylhydantoin
118-52-5

1,3-dichloro-5,5-dimethylhydantoin

2-Ethylhexyl alcohol
104-76-7

2-Ethylhexyl alcohol

benzyl ester of 4-amino-3-chloro-5-fluoro-6-(4-chloro-2-fluoro-3-methoxyphenyl)pyridine-2-carboxylic acid
1390661-72-9

benzyl ester of 4-amino-3-chloro-5-fluoro-6-(4-chloro-2-fluoro-3-methoxyphenyl)pyridine-2-carboxylic acid

Conditions
ConditionsYield
With triethylamine84%
1,3-dichloro-5,5-dimethylhydantoin
118-52-5

1,3-dichloro-5,5-dimethylhydantoin

methyl 3-(benzylthio)-4-cyclopropylbenzoate

methyl 3-(benzylthio)-4-cyclopropylbenzoate

methyl 3-(chlorosulfonyl)-4-cyclopropylbenzoate

methyl 3-(chlorosulfonyl)-4-cyclopropylbenzoate

Conditions
ConditionsYield
With acetic acid In water; acetonitrile at -10℃; for 3h;80%
1,3-dichloro-5,5-dimethylhydantoin
118-52-5

1,3-dichloro-5,5-dimethylhydantoin

4-amino-5-fluoro-6-(4-fluorobenzyl)picolinaldehyde
1613459-80-5

4-amino-5-fluoro-6-(4-fluorobenzyl)picolinaldehyde

4-amino-3-chloro-5-fluoro-6-(4-fluorobenzyl)picolinaldehyde
1613459-88-3

4-amino-3-chloro-5-fluoro-6-(4-fluorobenzyl)picolinaldehyde

Conditions
ConditionsYield
In acetonitrile73.7%
1,3-dichloro-5,5-dimethylhydantoin
118-52-5

1,3-dichloro-5,5-dimethylhydantoin

4-amino-6-(tert-butyl)-5-fluoropicolinaldehyde
1613459-77-0

4-amino-6-(tert-butyl)-5-fluoropicolinaldehyde

4-amino-6-(tert-butyl)-3-chloro-5-fluoropicolinaldehyde
1652602-09-9

4-amino-6-(tert-butyl)-3-chloro-5-fluoropicolinaldehyde

Conditions
ConditionsYield
In acetonitrile70.5%
N-Methylpyrrole
96-54-8

N-Methylpyrrole

1,3-dichloro-5,5-dimethylhydantoin
118-52-5

1,3-dichloro-5,5-dimethylhydantoin

A

3-(1-methyl-1H-pyrrol-2-yl)-5,5-dimethylhydantoin

3-(1-methyl-1H-pyrrol-2-yl)-5,5-dimethylhydantoin

B

1,3-di-(1-methyl-1H-pyrrol-2-yl)-5,5-dimethylhydantoin

1,3-di-(1-methyl-1H-pyrrol-2-yl)-5,5-dimethylhydantoin

Conditions
ConditionsYield
With sodium hydrogencarbonate In chloroform for 57h;A 70%
B 28%
1,3-dichloro-5,5-dimethylhydantoin
118-52-5

1,3-dichloro-5,5-dimethylhydantoin

benzaldehyde
100-52-7

benzaldehyde

3-benzoyl-5,5-dimethylimidazolidine-2,4-dione
1886-18-6

3-benzoyl-5,5-dimethylimidazolidine-2,4-dione

Conditions
ConditionsYield
With iron(III) chloride; 2,2,6,6-Tetramethyl-1-piperidinyloxy free radical; sodium hydrogencarbonate In water; acetonitrile at 35℃; for 2.5h; Sealed tube; Inert atmosphere;70%
1,3-dichloro-5,5-dimethylhydantoin
118-52-5

1,3-dichloro-5,5-dimethylhydantoin

4-amino-3-fluoro-6'-(trifluoromethyl)-[2,3'-bipyridine]-6-carbaldehyde
1613459-81-6

4-amino-3-fluoro-6'-(trifluoromethyl)-[2,3'-bipyridine]-6-carbaldehyde

4-amino-5-chloro-3-fluoro-6'-(trifluoromethyl)-[2,3'-bipyridine]-6-carbaldehyde
1613459-89-4

4-amino-5-chloro-3-fluoro-6'-(trifluoromethyl)-[2,3'-bipyridine]-6-carbaldehyde

Conditions
ConditionsYield
In acetonitrile69.8%
4-Methoxystyrene
637-69-4

4-Methoxystyrene

1,3-dichloro-5,5-dimethylhydantoin
118-52-5

1,3-dichloro-5,5-dimethylhydantoin

A

(+/-)-1-chloro-2-hydroxy-2-(p-methoxyphenyl)ethane
4973-18-6

(+/-)-1-chloro-2-hydroxy-2-(p-methoxyphenyl)ethane

B

1-chloro-3-(2-chloro-1-(4-methoxyphenyl)ethyl)-5,5-dimethylimidazolidine-2,4-dione
1332928-55-8

1-chloro-3-(2-chloro-1-(4-methoxyphenyl)ethyl)-5,5-dimethylimidazolidine-2,4-dione

Conditions
ConditionsYield
With (2S,3S)-3-hydroxy-2-(4-methylphenylsulfonamido)butanoic acid; water In acetone at 20℃; for 1h; regioselective reaction;A 62%
B 23%
1,3-dichloro-5,5-dimethylhydantoin
118-52-5

1,3-dichloro-5,5-dimethylhydantoin

benzyl alcohol
100-51-6

benzyl alcohol

A

benzaldehyde
100-52-7

benzaldehyde

B

3-benzoyl-5,5-dimethylimidazolidine-2,4-dione
1886-18-6

3-benzoyl-5,5-dimethylimidazolidine-2,4-dione

Conditions
ConditionsYield
With iron(III) chloride; 2,2,6,6-Tetramethyl-1-piperidinyloxy free radical; sodium hydrogencarbonate In water; acetonitrile at 35℃; for 1h; Reagent/catalyst; Sealed tube; Inert atmosphere;A 35%
B 62%
With iron(III) chloride; 2,2,6,6-Tetramethyl-1-piperidinyloxy free radical; sodium hydrogencarbonate In water; acetonitrile at 35℃; for 1h; Sealed tube; Inert atmosphere;A 52%
B 44%
1,3-dichloro-5,5-dimethylhydantoin
118-52-5

1,3-dichloro-5,5-dimethylhydantoin

4-amino-6-cyclobutyl-5-fluoropicolinaldehyde
1613459-79-2

4-amino-6-cyclobutyl-5-fluoropicolinaldehyde

4-amino-3-chloro-6-cyclobutyl-5-fluoropicolinaldehyde
1652602-11-3

4-amino-3-chloro-6-cyclobutyl-5-fluoropicolinaldehyde

Conditions
ConditionsYield
In acetonitrile45.7%
3-(3,5-di-t-butyl-4-hydroxybenzoyl)pyrrole
116689-10-2

3-(3,5-di-t-butyl-4-hydroxybenzoyl)pyrrole

1,3-dichloro-5,5-dimethylhydantoin
118-52-5

1,3-dichloro-5,5-dimethylhydantoin

2-chloro-4-(3,5-di-t-butyl-4-hydroxybenzoyl)pyrrole

2-chloro-4-(3,5-di-t-butyl-4-hydroxybenzoyl)pyrrole

Conditions
ConditionsYield
In hexane; dichloromethane; ethyl acetate; acetone43%
1,3-dichloro-5,5-dimethylhydantoin
118-52-5

1,3-dichloro-5,5-dimethylhydantoin

N,N-bis(p-methoxybenzyl)amine
17061-62-0

N,N-bis(p-methoxybenzyl)amine

2-(3-(benzylthio)-4-fluorophenyl)ethanol

2-(3-(benzylthio)-4-fluorophenyl)ethanol

2-fluoro-5-(2-hydroxyethyl)-N,N-bis(4-methoxybenzyl)benzenesulfonamide

2-fluoro-5-(2-hydroxyethyl)-N,N-bis(4-methoxybenzyl)benzenesulfonamide

Conditions
ConditionsYield
Stage #1: 1,3-dichloro-5,5-dimethylhydantoin; 2-(3-(benzylthio)-4-fluorophenyl)ethanol With acetic acid In water at -10℃; for 4h;
Stage #2: N,N-bis(p-methoxybenzyl)amine With triethylamine In dichloromethane at 0 - 20℃; for 18h;
32%
1,3-dichloro-5,5-dimethylhydantoin
118-52-5

1,3-dichloro-5,5-dimethylhydantoin

2,5-dioxopyrrolidin-1-yl (2S)-2-(((benzyloxy)carbonyl)amino)-3-methylbutanoate
3496-11-5

2,5-dioxopyrrolidin-1-yl (2S)-2-(((benzyloxy)carbonyl)amino)-3-methylbutanoate

tert-butyl carbamate
4248-19-5

tert-butyl carbamate

C15H19NO4

C15H19NO4

C18H25N3O5

C18H25N3O5

Conditions
ConditionsYield
Stage #1: 1,3-dichloro-5,5-dimethylhydantoin; tert-butyl carbazate; C15H19NO4 With potassium osmate(VI) dihydrate; water; potassium carbonate; hydroquinidein 1,4-phthalazinediyl diether; sodium hydroxide; potassium hexacyanoferrate(III) In propan-1-ol at 20 - 25℃; for 16h;
Stage #2: With palladium 10% on activated carbon; hydrogen In ethyl acetate at 40℃; under 2068.65 Torr; for 2h;
Stage #3: 2,5-dioxopyrrolidin-1-yl (2S)-2-(((benzyloxy)carbonyl)amino)-3-methylbutanoate Further stages;
31%
1,3-dichloro-5,5-dimethylhydantoin
118-52-5

1,3-dichloro-5,5-dimethylhydantoin

4-amino-6-(cyclopropylmethyl)-5-fluoropicolinaldehyde
1613459-78-1

4-amino-6-(cyclopropylmethyl)-5-fluoropicolinaldehyde

4-amino-3-chloro-6-(cyclopropylmethyl)-5-fluoropicolinaldehyde
1613459-87-2

4-amino-3-chloro-6-(cyclopropylmethyl)-5-fluoropicolinaldehyde

Conditions
ConditionsYield
In acetonitrile23.44%
1,3-dichloro-5,5-dimethylhydantoin
118-52-5

1,3-dichloro-5,5-dimethylhydantoin

4-amino-5-fluoro-6-(tetrahydrofuran-2-yl)picolinaldehyde
1613459-83-8

4-amino-5-fluoro-6-(tetrahydrofuran-2-yl)picolinaldehyde

4-amino-3-chloro-5-fluoro-6-(tetrahydrofuran-2-yl)picolinaldehyde
1613459-90-7

4-amino-3-chloro-5-fluoro-6-(tetrahydrofuran-2-yl)picolinaldehyde

Conditions
ConditionsYield
In acetonitrile10.14%
tetrachloromethane
56-23-5

tetrachloromethane

1,3-dichloro-5,5-dimethylhydantoin
118-52-5

1,3-dichloro-5,5-dimethylhydantoin

antipyrine
60-80-0

antipyrine

dibenzoyl peroxide
94-36-0

dibenzoyl peroxide

4-chloro-1,2-dihydro-1,5-dimethyl-2-phenyl-3H-pyrazol-3-one
43068-92-4

4-chloro-1,2-dihydro-1,5-dimethyl-2-phenyl-3H-pyrazol-3-one

1,3-dichloro-5,5-dimethylhydantoin
118-52-5

1,3-dichloro-5,5-dimethylhydantoin

antipyrine
60-80-0

antipyrine

4-chloro-1,2-dihydro-1,5-dimethyl-2-phenyl-3H-pyrazol-3-one
43068-92-4

4-chloro-1,2-dihydro-1,5-dimethyl-2-phenyl-3H-pyrazol-3-one

Conditions
ConditionsYield
With tetrachloromethane; dibenzoyl peroxide
1,3-dichloro-5,5-dimethylhydantoin
118-52-5

1,3-dichloro-5,5-dimethylhydantoin

2-Methoxynaphthalene
93-04-9

2-Methoxynaphthalene

1-chloro-2-methoxynaphthalene
13101-92-3

1-chloro-2-methoxynaphthalene

Conditions
ConditionsYield
With tetrachloromethane
1,3-dichloro-5,5-dimethylhydantoin
118-52-5

1,3-dichloro-5,5-dimethylhydantoin

2-ethoxynaphthalene
93-18-5

2-ethoxynaphthalene

ethyl-(1-chloro-[2]naphthyl)-ether
85972-71-0

ethyl-(1-chloro-[2]naphthyl)-ether

Conditions
ConditionsYield
With tetrachloromethane
1,3-dichloro-5,5-dimethylhydantoin
118-52-5

1,3-dichloro-5,5-dimethylhydantoin

2,5-dimethoxy toluene
24599-58-4

2,5-dimethoxy toluene

A

2,5-dimethoxybenzyl chloride
3840-27-5

2,5-dimethoxybenzyl chloride

B

2-Chloro-5-methyl-1,4-dimethoxybenzene
2675-78-7

2-Chloro-5-methyl-1,4-dimethoxybenzene

Conditions
ConditionsYield
With tetrachloromethane; dibenzoyl peroxide
1,3-dichloro-5,5-dimethylhydantoin
118-52-5

1,3-dichloro-5,5-dimethylhydantoin

1-acetamidonaphthalene
575-36-0

1-acetamidonaphthalene

N-(4-chloro-[1]naphthyl)-acetamide
105789-74-0

N-(4-chloro-[1]naphthyl)-acetamide

Conditions
ConditionsYield
With chloroform
1,3-dichloro-5,5-dimethylhydantoin
118-52-5

1,3-dichloro-5,5-dimethylhydantoin

2-acetylaminonaphthalene
581-97-5

2-acetylaminonaphthalene

1-chloro-2-acetylaminonaphthalene
105789-95-5

1-chloro-2-acetylaminonaphthalene

Conditions
ConditionsYield
With chloroform
1,3-dichloro-5,5-dimethylhydantoin
118-52-5

1,3-dichloro-5,5-dimethylhydantoin

pregna-4,9(11)-diene-3,20-dione-17-hydroxy-21-methyl
34184-82-2

pregna-4,9(11)-diene-3,20-dione-17-hydroxy-21-methyl

9-chloro-11β,17-dihydroxy-pregn-4-ene-3,20-dione
24916-89-0

9-chloro-11β,17-dihydroxy-pregn-4-ene-3,20-dione

1,3-dichloro-5,5-dimethylhydantoin
118-52-5

1,3-dichloro-5,5-dimethylhydantoin

16α-acetoxy-17-hydroxy-pregna-4,9(11)-diene-3,20-dione
96709-11-4

16α-acetoxy-17-hydroxy-pregna-4,9(11)-diene-3,20-dione

16α-acetoxy-9-chloro-11β,17-dihydroxy-pregn-4-ene-3,20-dione
96674-82-7

16α-acetoxy-9-chloro-11β,17-dihydroxy-pregn-4-ene-3,20-dione

1,3-dichloro-5,5-dimethylhydantoin
118-52-5

1,3-dichloro-5,5-dimethylhydantoin

1-chloro-2,2-bis(p-chlorophenyl)ethylene
1022-22-6

1-chloro-2,2-bis(p-chlorophenyl)ethylene

acetic acid
64-19-7

acetic acid

1-acetoxy-2,2-dichloro-1,1-bis-(4-chloro-phenyl)-ethane
79133-04-3

1-acetoxy-2,2-dichloro-1,1-bis-(4-chloro-phenyl)-ethane

1,3-dichloro-5,5-dimethylhydantoin
118-52-5

1,3-dichloro-5,5-dimethylhydantoin

methoxybenzene
100-66-3

methoxybenzene

4-chloromethoxybenzene
623-12-1

4-chloromethoxybenzene

1,3-dichloro-5,5-dimethylhydantoin
118-52-5

1,3-dichloro-5,5-dimethylhydantoin

naphthalen-2-ylamine
91-59-8

naphthalen-2-ylamine

1-chloro-2-aminonaphthalene
16452-11-2

1-chloro-2-aminonaphthalene

Conditions
ConditionsYield
With tetrachloromethane

118-52-5Related news

Chemiluminescence flow injection analysis of 1,3-Dichloro-5,5-dimethylhydantoin (cas 118-52-5) in swimming pool water08/28/2019

A new chemiluminescence (CL) flow-injection method is proposed for the determination of 1,3-dichloro-5,5-dimethylhydantoin (DDH). The method is based on the chemiluminescent reaction of DDH and luminol–H2O2 in an alkaline medium (pH 12.0–12.5). The concentration of the analyte shows a good lin...detailed

Silica-supported 1,3-Dichloro-5,5-dimethylhydantoin (cas 118-52-5) (DCH) as a useful reagent for microwave-assisted aromatization of 1,3,5-trisubstituted pyrazolines under solvent-free conditions08/27/2019

1,3,5-Trisubstituted pyrazolines are rapidly and conveniently oxidized to their corresponding pyrazoles by 1,3-dichloro-5,5-dimethylhydantoin (DCH) in solution and solvent-free conditions under microwave irradiation. The presence of silica gel as a supporting agent is shown to be effective in re...detailed

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