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87-90-1 Usage

Chemical Description

Trichloroisocyanuric acid is a chlorinated derivative of isocyanuric acid.

Chemical Description

Trichloroisocyanuric acid is a white crystalline powder that is commonly used as a disinfectant and bleaching agent.

Check Digit Verification of cas no

The CAS Registry Mumber 87-90-1 includes 5 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 2 digits, 8 and 7 respectively; the second part has 2 digits, 9 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 87-90:
(4*8)+(3*7)+(2*9)+(1*0)=71
71 % 10 = 1
So 87-90-1 is a valid CAS Registry Number.
InChI:InChI=1/C3Cl3N3O3/c4-7-1(10)8(5)3(12)9(6)2(7)11

87-90-1 Well-known Company Product Price

  • Brand
  • (Code)Product description
  • CAS number
  • Packaging
  • Price
  • Detail
  • TCI America

  • (T0620)  Trichloroisocyanuric Acid  >95.0%(T)

  • 87-90-1

  • 25g

  • 155.00CNY

  • Detail
  • TCI America

  • (T0620)  Trichloroisocyanuric Acid  >95.0%(T)

  • 87-90-1

  • 500g

  • 390.00CNY

  • Detail
  • Alfa Aesar

  • (B23906)  Trichloroisocyanuric acid, 90+%   

  • 87-90-1

  • 100g

  • 197.0CNY

  • Detail
  • Alfa Aesar

  • (B23906)  Trichloroisocyanuric acid, 90+%   

  • 87-90-1

  • 500g

  • 468.0CNY

  • Detail
  • Alfa Aesar

  • (B23906)  Trichloroisocyanuric acid, 90+%   

  • 87-90-1

  • 2500g

  • 1858.0CNY

  • Detail
  • Aldrich

  • (176125)  Trichloroisocyanuricacid  

  • 87-90-1

  • 176125-50G

  • 259.74CNY

  • Detail
  • Aldrich

  • (176125)  Trichloroisocyanuricacid  

  • 87-90-1

  • 176125-250G

  • 439.92CNY

  • Detail
  • Aldrich

  • (176125)  Trichloroisocyanuricacid  

  • 87-90-1

  • 176125-1KG

  • 670.41CNY

  • Detail
  • Sigma-Aldrich

  • (91220)  Trichloroisocyanuricacid  technical, ≥95% (CHN)

  • 87-90-1

  • 91220-100G

  • 226.98CNY

  • Detail
  • Sigma-Aldrich

  • (91220)  Trichloroisocyanuricacid  technical, ≥95% (CHN)

  • 87-90-1

  • 91220-500G

  • 746.46CNY

  • Detail

87-90-1SDS

SAFETY DATA SHEETS

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

Version: 1.0

Creation Date: Aug 12, 2017

Revision Date: Aug 12, 2017

1.Identification

1.1 GHS Product identifier

Product name 1,3,5-trichloro-1,3,5-triazinane-2,4,6-trione

1.2 Other means of identification

Product number -
Other names 1,3,5-Triazine-2,4,6(1H,3H,5H)-trione, 1,3,5-trichloro-

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:87-90-1 SDS

87-90-1Synthetic route

cyanuric acid
108-80-5

cyanuric acid

trichloroisocyanuric acid
87-90-1

trichloroisocyanuric acid

Conditions
ConditionsYield
With chlorine; calcium carbonate In water100%
With hypochlorous anhydride In water at 25℃; for 6h; pH=3.5; pH-value; Temperature; Large scale;98%
With sodium hydroxide; chlorine unter der Einwirkung von UV-Licht;
With potassium hydroxide; chlorine unter der Einwirkung von UV-LIcht;
sodium cyanurate
3047-33-4

sodium cyanurate

trichloroisocyanuric acid
87-90-1

trichloroisocyanuric acid

Conditions
ConditionsYield
With chlorine In toluene at 30 - 40℃; pH=3 - 3.5; Solvent; pH-value; Temperature; Large scale;93.65%
With chlorine at 10 - 23℃; Temperature; Flow reactor; Large scale;
With chlorine; sodium hydroxide In methanol; water at 5 - 65℃; for 0.166667h; pH=2.5 - 3; Solvent; Temperature; Reagent/catalyst;12.98 g
N'-carbonyl-N,N-dichloro-urea
26231-96-9

N'-carbonyl-N,N-dichloro-urea

trichloroisocyanuric acid
87-90-1

trichloroisocyanuric acid

isocyanuric acid
108-80-5

isocyanuric acid

trichloroisocyanuric acid
87-90-1

trichloroisocyanuric acid

Conditions
ConditionsYield
With potassium hydroxide; chlorine
With chlorine; calcium hydroxide In water at 40 - 50℃; pH=4;
cyanuric acid
108-80-5

cyanuric acid

A

trichloroisocyanuric acid
87-90-1

trichloroisocyanuric acid

B

1,3-dichloro-[1,3,5]triazinane-2,4,6-trione
2782-57-2

1,3-dichloro-[1,3,5]triazinane-2,4,6-trione

C

chloro-isocyanuric acid

chloro-isocyanuric acid

Conditions
ConditionsYield
In water reactn. with single positive charged Cl;
In water reactn. with single positive charged Cl;
1,3,5-tribromo-1,3,5-triazinane-2,4,6-trione
17497-85-7

1,3,5-tribromo-1,3,5-triazinane-2,4,6-trione

A

trichloroisocyanuric acid
87-90-1

trichloroisocyanuric acid

B

bromine chloride
13863-41-7

bromine chloride

Conditions
ConditionsYield
90°C;A >99
B n/a
chlorine isocyanate
13858-09-8

chlorine isocyanate

sodium fluoride

sodium fluoride

A

Carbonyl fluoride
353-50-4

Carbonyl fluoride

B

carbon monoxide
201230-82-2

carbon monoxide

C

trichloroisocyanuric acid
87-90-1

trichloroisocyanuric acid

Conditions
ConditionsYield
byproducts: NaCl, SiF4; with dry NaF, 300°C;
chlorine isocyanate
13858-09-8

chlorine isocyanate

A

nitrogen trichloride
10025-85-1

nitrogen trichloride

B

carbon dioxide
124-38-9

carbon dioxide

C

trichloroisocyanuric acid
87-90-1

trichloroisocyanuric acid

D

1,3-dichloro-[1,3,5]triazinane-2,4,6-trione
2782-57-2

1,3-dichloro-[1,3,5]triazinane-2,4,6-trione

E

1,3-dichloro-1,3-diazetidine-2,4-dione
24604-62-4

1,3-dichloro-1,3-diazetidine-2,4-dione

Conditions
ConditionsYield
slow react. above the melting point, fast at room temp., dichlorouretidindione formed by vac. sublimation (50.degrre.C, 0.1 Torr), di- and trichlocyanuric acid yielded by 48h sublimation of the residue at 95-160°C;
chlorine isocyanate
13858-09-8

chlorine isocyanate

A

N'-carbonyl-N,N-dichloro-urea
26231-96-9

N'-carbonyl-N,N-dichloro-urea

B

trichloroisocyanuric acid
87-90-1

trichloroisocyanuric acid

Conditions
ConditionsYield
With alkali fluorides in presence of anhyd. alkali fluorides, 50 Torr, room temp.;
cyanuric acid
108-80-5

cyanuric acid

chlorine
7782-50-5

chlorine

trichloroisocyanuric acid
87-90-1

trichloroisocyanuric acid

Conditions
ConditionsYield
vigorous stirring, 0°C; filtering, drying, sublimated in vac. at 170°C;
vigorous stirring, 0°C; filtering, drying, sublimated in vac. at 170°C;
triiodoisocyanuric acid
27694-85-5

triiodoisocyanuric acid

chlorine
7782-50-5

chlorine

A

trichloroisocyanuric acid
87-90-1

trichloroisocyanuric acid

B

iodine
7553-56-2

iodine

Conditions
ConditionsYield
room temp.;
1,3-dichloro-1,3-diazetidine-2,4-dione
24604-62-4

1,3-dichloro-1,3-diazetidine-2,4-dione

trichloroisocyanuric acid
87-90-1

trichloroisocyanuric acid

Conditions
ConditionsYield
above the melting point at atmospheric pressure;
In acetonitrile
trichloroisocyanuric acid
87-90-1

trichloroisocyanuric acid

6-bromo-7-fluoro-4-{[(1S)-1-(tetrahydro-2H-pyran-4-yl)ethyl]amino}-3-quinolinecarboxamide

6-bromo-7-fluoro-4-{[(1S)-1-(tetrahydro-2H-pyran-4-yl)ethyl]amino}-3-quinolinecarboxamide

(S)-8-bromo-7-fluoro-1-(1-(tetrahydro-2H-pyran-4-yl)ethyl)-1H-imidazo[4,5-c]quinolin-2(3H)-one

(S)-8-bromo-7-fluoro-1-(1-(tetrahydro-2H-pyran-4-yl)ethyl)-1H-imidazo[4,5-c]quinolin-2(3H)-one

Conditions
ConditionsYield
With 1,8-diazabicyclo[5.4.0]undec-7-ene In methanol at 0 - 20℃; for 0.333333h; Inert atmosphere;100%
trichloroisocyanuric acid
87-90-1

trichloroisocyanuric acid

Benzyl 4-hydroxybenzoate
94-18-8

Benzyl 4-hydroxybenzoate

benzyl 4-formylbenzoate
78767-55-2

benzyl 4-formylbenzoate

Conditions
ConditionsYield
With 2,2,6,6-Tetramethyl-1-piperidinyloxy free radical; sodium hydrogencarbonate In dichloromethane for 0.0833333h;99%
trichloroisocyanuric acid
87-90-1

trichloroisocyanuric acid

6-bromo-4-[(cis-3-methoxycyclobutyl)amino]quinoline-3-carboxamide

6-bromo-4-[(cis-3-methoxycyclobutyl)amino]quinoline-3-carboxamide

8-bromo-1-(cis-3-methoxycyclobutyl)-3H-imidazo[4,5-c]quinolin-2-one

8-bromo-1-(cis-3-methoxycyclobutyl)-3H-imidazo[4,5-c]quinolin-2-one

Conditions
ConditionsYield
With 1,8-diazabicyclo[5.4.0]undec-7-ene In methanol at 0 - 20℃; for 18h; Inert atmosphere;99%
trichloroisocyanuric acid
87-90-1

trichloroisocyanuric acid

2-(2-((trifluoromethyl)thio)phenyl)pyridine
1584705-57-6

2-(2-((trifluoromethyl)thio)phenyl)pyridine

2-(2-((trifluoromethyl)sulfinyl)phenyl)pyridine

2-(2-((trifluoromethyl)sulfinyl)phenyl)pyridine

Conditions
ConditionsYield
Stage #1: 2-(2-((trifluoromethyl)thio)phenyl)pyridine In dichloromethane; acetonitrile at 20℃; for 0.0833333h; Schlenk technique; Inert atmosphere;
Stage #2: trichloroisocyanuric acid In dichloromethane; acetonitrile at 20℃; for 1h; Schlenk technique; Inert atmosphere;
99%
trichloroisocyanuric acid
87-90-1

trichloroisocyanuric acid

6-bromo-7-fluoro-4-(tetrahydro-2H-pyran-4-ylamino)quinoline-3-carboxamide

6-bromo-7-fluoro-4-(tetrahydro-2H-pyran-4-ylamino)quinoline-3-carboxamide

8-bromo-7-fluoro-1-(oxan-4-yl)-3H-imidazo[4,5-c]quinolin-2-one

8-bromo-7-fluoro-1-(oxan-4-yl)-3H-imidazo[4,5-c]quinolin-2-one

Conditions
ConditionsYield
With 1,8-diazabicyclo[5.4.0]undec-7-ene In methanol at 0 - 20℃; for 0.25h; Inert atmosphere;98%
trichloroisocyanuric acid
87-90-1

trichloroisocyanuric acid

1-(4-bromophenyl)-1H-imidazole
10040-96-7

1-(4-bromophenyl)-1H-imidazole

2-hydroxy-4,6-bis(4-bromophenylimidazolium)-1,3,5-triazinide dichloride

2-hydroxy-4,6-bis(4-bromophenylimidazolium)-1,3,5-triazinide dichloride

Conditions
ConditionsYield
In acetonitrile at 0 - 110℃; for 20.5h;96%
2,3,5-trimethyl-pyridine
695-98-7

2,3,5-trimethyl-pyridine

trichloroisocyanuric acid
87-90-1

trichloroisocyanuric acid

benzamide
55-21-0

benzamide

2-chloromethyl-3,5-dimethyl-4-nitro-pyridine N-oxide
142885-89-0

2-chloromethyl-3,5-dimethyl-4-nitro-pyridine N-oxide

Conditions
ConditionsYield
With sodium hydroxide In water93%
trichloroisocyanuric acid
87-90-1

trichloroisocyanuric acid

dicloroiodoisocyanuric acid
1376143-54-2

dicloroiodoisocyanuric acid

Conditions
ConditionsYield
Stage #1: trichloroisocyanuric acid With iodine at 170℃; for 18h;
Stage #2: at 220℃; for 24h;
93%
trichloroisocyanuric acid
87-90-1

trichloroisocyanuric acid

thiophenol
108-98-5

thiophenol

A

isocyanuric acid
108-80-5

isocyanuric acid

B

diphenyldisulfane
882-33-7

diphenyldisulfane

Conditions
ConditionsYield
With pyridine; water; benzoic acid In dichloromethane; acetonitrile at 40℃;A n/a
B 91%
1-(Trimethylsilyloxy)cyclohexene
6651-36-1

1-(Trimethylsilyloxy)cyclohexene

trichloroisocyanuric acid
87-90-1

trichloroisocyanuric acid

A

silyl enol ether

silyl enol ether

B

2-Chlorocyclohexanone
822-87-7

2-Chlorocyclohexanone

Conditions
ConditionsYield
With hydrogenchloride In diethyl ether; ethyl acetateA n/a
B 91%
With hydrogenchloride In diethyl ether; ethyl acetateA n/a
B 91%
trichloroisocyanuric acid
87-90-1

trichloroisocyanuric acid

triiodoisocyanuric acid
27694-85-5

triiodoisocyanuric acid

Conditions
ConditionsYield
With iodine at 180 - 230℃; for 72h;90%
With iodine at 180 - 230℃; for 72h; Sealed tube;90%
With iodine Sealed tube; Heating;
trichloroisocyanuric acid
87-90-1

trichloroisocyanuric acid

para-thiocresol
106-45-6

para-thiocresol

A

di(p-tolyl) disulfide
103-19-5

di(p-tolyl) disulfide

B

isocyanuric acid
108-80-5

isocyanuric acid

Conditions
ConditionsYield
With pyridine; water; benzoic acid In dichloromethane; acetonitrile at 40℃;A 89%
B n/a
trichloroisocyanuric acid
87-90-1

trichloroisocyanuric acid

2-(3-hydroxypropoxy)ethyl nitrate
1321459-27-1

2-(3-hydroxypropoxy)ethyl nitrate

3-(2-(nitrooxy)ethoxy)propanoic acid
1321459-22-6

3-(2-(nitrooxy)ethoxy)propanoic acid

Conditions
ConditionsYield
With 2,2,6,6-Tetramethyl-1-piperidinyloxy free radical; sodium hydrogencarbonate; sodium bromide In acetone at 0 - 20℃; for 3h;89%
trichloroisocyanuric acid
87-90-1

trichloroisocyanuric acid

potassium-2-phenyl-3-(trifluoro-l4-boraneyl)-1,2-dihydrobenzo[e][1,2]-azaborinine

potassium-2-phenyl-3-(trifluoro-l4-boraneyl)-1,2-dihydrobenzo[e][1,2]-azaborinine

3-chloro-2-phenyl-1,2-dihydrobenzo[e][1,2]azaborinine

3-chloro-2-phenyl-1,2-dihydrobenzo[e][1,2]azaborinine

Conditions
ConditionsYield
In diethyl ether; water at 20℃; Inert atmosphere;89%
trichloroisocyanuric acid
87-90-1

trichloroisocyanuric acid

diphenylgermane
1675-58-7

diphenylgermane

diphenylchlorogermane
7366-23-6

diphenylchlorogermane

Conditions
ConditionsYield
In tetrahydrofuran at -80 - 20℃; Inert atmosphere; Schlenk technique;89%
2-(4-nitro-phenyl)-4,4-dimethyl-5-methylene-4,5-dihydrooxazole
214420-92-5

2-(4-nitro-phenyl)-4,4-dimethyl-5-methylene-4,5-dihydrooxazole

trichloroisocyanuric acid
87-90-1

trichloroisocyanuric acid

N-(1-chloro-3-methyl-2-oxobut-3-yl)-4-nitrobenzamide

N-(1-chloro-3-methyl-2-oxobut-3-yl)-4-nitrobenzamide

Conditions
ConditionsYield
With hydrogenchloride In hexane; water; ethyl acetate88%
With hydrogenchloride In hexane; water; ethyl acetate88%
trichloroisocyanuric acid
87-90-1

trichloroisocyanuric acid

(1-naphthyl)2GeH2

(1-naphthyl)2GeH2

1-naphthylGe(Cl)H2

1-naphthylGe(Cl)H2

Conditions
ConditionsYield
In tetrahydrofuran at -80 - 20℃; Inert atmosphere; Schlenk technique;88%
2-(3,5-dichloro-4-methylphenyl)-4-ethyl-4-methyl-5-methyleneoxazoline
209809-70-1

2-(3,5-dichloro-4-methylphenyl)-4-ethyl-4-methyl-5-methyleneoxazoline

trichloroisocyanuric acid
87-90-1

trichloroisocyanuric acid

zoxamide
156052-68-5

zoxamide

Conditions
ConditionsYield
With hydrogenchloride In water; ethyl acetate87%
trichloroisocyanuric acid
87-90-1

trichloroisocyanuric acid

6-(pyridin-3-yl)-4-(tetrahydro-2H-pyran-4-ylamino)quinoline-3-carboxamide

6-(pyridin-3-yl)-4-(tetrahydro-2H-pyran-4-ylamino)quinoline-3-carboxamide

8-(pyridin-3-yl)-1-(tetrahydro-2H-pyran-4-yl)-1H-imidazo[4,5-c]quinolin-2(3H)-one

8-(pyridin-3-yl)-1-(tetrahydro-2H-pyran-4-yl)-1H-imidazo[4,5-c]quinolin-2(3H)-one

Conditions
ConditionsYield
With 1,8-diazabicyclo[5.4.0]undec-7-ene In methanol at 0 - 20℃; for 0.5h; Inert atmosphere;87%
3,7-dimethyl-2E,6-octadien-1-yl acetate
105-87-3

3,7-dimethyl-2E,6-octadien-1-yl acetate

trichloroisocyanuric acid
87-90-1

trichloroisocyanuric acid

A

cyanuric acid
108-80-5

cyanuric acid

B

6-chloro-3,7-dimethyl-2,7-octadiene-1-acetate

6-chloro-3,7-dimethyl-2,7-octadiene-1-acetate

Conditions
ConditionsYield
In hexaneA n/a
B 86%
In hexaneA n/a
B 86%
3,7-dimethyl-2E,6-octadien-1-yl acetate
105-87-3

3,7-dimethyl-2E,6-octadien-1-yl acetate

trichloroisocyanuric acid
87-90-1

trichloroisocyanuric acid

A

cyanuric acid
108-80-5

cyanuric acid

B

6-chloro-3,7-dimethyl-2,7-octadien-1-acetate

6-chloro-3,7-dimethyl-2,7-octadien-1-acetate

Conditions
ConditionsYield
In hexaneA n/a
B 86%
trichloroisocyanuric acid
87-90-1

trichloroisocyanuric acid

tert-butyl (2R,4R)-2-(5-fluoropyridin-3-yl)-4-hydroxypyrrolidine-1-carboxylate

tert-butyl (2R,4R)-2-(5-fluoropyridin-3-yl)-4-hydroxypyrrolidine-1-carboxylate

tert-butyl (R)-2-(5-fluoropyridin-3-yl)-4-oxopyrrolidine-1-carboxylate

tert-butyl (R)-2-(5-fluoropyridin-3-yl)-4-oxopyrrolidine-1-carboxylate

Conditions
ConditionsYield
With 2,2,6,6-Tetramethyl-1-piperidinyloxy free radical at -10 - 25℃; for 1.25h;85.32%
trichloroisocyanuric acid
87-90-1

trichloroisocyanuric acid

7-fluoro-4-((trans-3-methoxycyclobutyl)amino)-6-(6-(methoxymethyl)pyridin-3-yl)quinoline-3-carboxamide

7-fluoro-4-((trans-3-methoxycyclobutyl)amino)-6-(6-(methoxymethyl)pyridin-3-yl)quinoline-3-carboxamide

7-fluoro-1-(trans-3-methoxycyclobutyl)-8-(6-(methoxymethyl)pyridin-3-yl)-1H-imidazo[4,5-c]quinolin-2(3H)-one

7-fluoro-1-(trans-3-methoxycyclobutyl)-8-(6-(methoxymethyl)pyridin-3-yl)-1H-imidazo[4,5-c]quinolin-2(3H)-one

Conditions
ConditionsYield
With 1,8-diazabicyclo[5.4.0]undec-7-ene In methanol at 0 - 20℃; Inert atmosphere;85%
trichloroisocyanuric acid
87-90-1

trichloroisocyanuric acid

dibutylgermane
29823-30-1

dibutylgermane

di-n-butylchlorogermane
14275-42-4

di-n-butylchlorogermane

Conditions
ConditionsYield
In tetrahydrofuran at -80 - 20℃; Inert atmosphere; Schlenk technique;85%
4-Methoxybenzenethiol
696-63-9

4-Methoxybenzenethiol

trichloroisocyanuric acid
87-90-1

trichloroisocyanuric acid

A

4,4'-dimethoxyphenyl disulfide
5335-87-5

4,4'-dimethoxyphenyl disulfide

B

isocyanuric acid
108-80-5

isocyanuric acid

Conditions
ConditionsYield
With pyridine; water; benzoic acid In dichloromethane; acetonitrile at 40℃;A 83%
B n/a
trichloroisocyanuric acid
87-90-1

trichloroisocyanuric acid

benzamide
55-21-0

benzamide

4-chloro-2,3,5-trimethylpyridine 1-oxide
109371-20-2

4-chloro-2,3,5-trimethylpyridine 1-oxide

4-chloro-2-chloromethyl-3,5-dimethylpyridine N-oxide

4-chloro-2-chloromethyl-3,5-dimethylpyridine N-oxide

Conditions
ConditionsYield
In dichloromethane; chloroform; water83%
trichloroisocyanuric acid
87-90-1

trichloroisocyanuric acid

triethyl phosphite
122-52-1

triethyl phosphite

hexahydro-1,3,5-tris(diethoxyphosphoryl)-1,3,5-triazine-2,4,6-trione

hexahydro-1,3,5-tris(diethoxyphosphoryl)-1,3,5-triazine-2,4,6-trione

Conditions
ConditionsYield
at 100 - 110℃; for 12h;82%
at 90℃;78%
In benzene72%
trichloroisocyanuric acid
87-90-1

trichloroisocyanuric acid

((2S,3R)-2,2-dimethyl-5-((4'R,5'S)-2',2',5'-trimethyl-1',3'-dioxolan-4'-yl)-1,3-dioxolan-4-yl)methanol
42927-35-5

((2S,3R)-2,2-dimethyl-5-((4'R,5'S)-2',2',5'-trimethyl-1',3'-dioxolan-4'-yl)-1,3-dioxolan-4-yl)methanol

(2S,3R)-2,2-dimethyl-5-((4'R,5'S)-2',2',5'-trimethyl-1',3'-dioxolan-4'-yl)-1,3-dioxolane-4-carbaldehyde
212065-83-3

(2S,3R)-2,2-dimethyl-5-((4'R,5'S)-2',2',5'-trimethyl-1',3'-dioxolan-4'-yl)-1,3-dioxolane-4-carbaldehyde

Conditions
ConditionsYield
With 2,2,6,6-Tetramethyl-1-piperidinyloxy free radical In dichloromethane at 0 - 20℃;82%

87-90-1Relevant articles and documents

Preparation method of omeprazole midbody

-

Paragraph 0069-0075, (2019/10/22)

The invention relates to a preparation method of 2-chloromethyl-3,5-dimethyl-4-methoxypyridine shown in a chemical structural formula I. The method is characterized by comprising the steps of a catalytic hydrogenation reaction, wherein Raney nickel or Pd/C is selected as a catalyst; a chlorination reaction, wherein YCln is selected from N-chloroacetamides or N-chlorosuccinimide or 1,3-dichloro-5,5-dimethylhydantoin or dichlord isocyanurice acid or symclosene; n is selected from 3 or 2 or 1; m is selected from 0 or 1 or 2.

Preparation method of 2-chloro-5-chloromethylpyridine

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Paragraph 0097-0117, (2017/07/19)

The invention relates to the field of chemical synthesis, particularly a preparation method of 2-chloro-5-chloromethylpyridine. The preparation method comprises the following step: carrying out cyclization reaction on 2-chloro-2-chloromethyl-4-cyanobutyraldehyde and cyanuric chloride to obtain the 2-chloro-5-chloromethylpyridine. The preparation method provided by the invention has the advantages of low production cost, high product quality, high yield and the like. Besides, the byproduct sodium cyanurate of the preparation method can be treated to prepare thetrichloroisocyanuric acid superior product, thereby further enhancing the economic benefits.

A two-stage continuous chlorination method for production of trichloro isocyanuric acid

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Paragraph 0027-0034, (2017/03/28)

The invention discloses a method for producing trichloro-isocyanuric acid by virtue of two-stage continuous chlorination. A production process of the method comprises first-stage chlorination reaction and second-stage chlorination reaction; an excessive amount of chlorine is fed into a second-stage reaction kettle, a cyanuric acid trisodium salt solution is continuously added into a first-stage reactor, the excessive amount of chlorine in the second-stage reaction kettle is sucked into the first-stage reactor for chlorination reaction by virtue of an ejection pump of a first-stage reaction system, and a reaction liquid overflows into the second-stage reaction kettle to continuously react to generate trichloro-isocyanuric acid. The chlorination reaction degree of materials inside the one-stage reactor and the chlorine feeding amount of the second-stage reaction kettle are controlled by virtue of the reaction temperature of the first-stage reactor. The method is small in amount of chlorination mother liquid and high in reaction efficiency, and a gas discharged from the first-stage reactor is free of chlorine. The time that the material is retained in the chlorination reaction system is short, so that side reaction can be reduced, the effective chlorine of a product is kept greater than 90%, and the yield is more than 86%.

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