2,5-Dichloropyrazine

Modify Date: 2025-08-22 16:55:52

2,5-Dichloropyrazine Structure
2,5-Dichloropyrazine structure
 Common Name 2,5-Dichloropyrazine
CAS Number 19745-07-4 Molecular Weight 148.978
Density 1.5±0.1 g/cm3 Boiling Point 184.4±35.0 °C at 760 mmHg
Molecular Formula C4H2Cl2N2 Melting Point 52-54ºC
MSDS N/A Flash Point 81.5±11.5 °C

 Names

Name 2,5-dichloropyrazine
Synonym More Synonyms

 Chemical & Physical Properties

Density 1.5±0.1 g/cm3
Boiling Point 184.4±35.0 °C at 760 mmHg
Melting Point 52-54ºC
Molecular Formula C4H2Cl2N2
Molecular Weight 148.978
Flash Point 81.5±11.5 °C
Exact Mass 147.959503
PSA 25.78000
LogP 1.49
Vapour Pressure 1.0±0.3 mmHg at 25°C
Index of Refraction 1.559

 Safety Information

Hazard Codes Xn
Risk Phrases 22-41
Safety Phrases 26-39
HS Code 2933990090

 Synthetic Route

2-Amino-5-chloropyrazine structure

2-Amino-5-chlor...

CAS#:33332-29-5

~%

2,5-Dichloropyrazine Structure

2,5-Dichloropyrazine

CAS#:19745-07-4

Literature: WO2008/85316 A1, ; Page/Page column 53-54 ; WO 2008/085316 A1
Pyrazine, 2-chloro-,4-oxide structure

Pyrazine, 2-chl...

CAS#:6863-76-9

~35%

2,5-Dichloropyrazine Structure

2,5-Dichloropyrazine

CAS#:19745-07-4

Literature: US2005/234046 A1, ; Page/Page column 70 ; US 20050234046 A1
5-Chloro-2-hydroxypyrazine structure

5-Chloro-2-hydr...

CAS#:89180-45-0

~%

2,5-Dichloropyrazine Structure

2,5-Dichloropyrazine

CAS#:19745-07-4

Literature: WO2008/46226 A1, ; Page/Page column 60 ; WO 2008/046226 A1
Pyrazine structure

Pyrazine

CAS#:290-37-9

~%

2,5-Dichloropyrazine Structure

2,5-Dichloropyrazine

CAS#:19745-07-4

Literature: US2524431 , ; US2475673 , ; GB612385 , ;
2-Chloropyrazine structure

2-Chloropyrazine

CAS#:14508-49-7

~%

2,5-Dichloropyrazine Structure

2,5-Dichloropyrazine

CAS#:19745-07-4

Literature: US2573268 , ;
Pyrazine, 2-chloro-,4-oxide structure

Pyrazine, 2-chl...

CAS#:6863-76-9

~%

2,5-Dichloropyrazine Structure

2,5-Dichloropyrazine

CAS#:19745-07-4

2,3-Dichloropyrazine structure

2,3-Dichloropyrazine

CAS#:4858-85-9

2,6-Dichloropyrazine structure

2,6-Dichloropyrazine

CAS#:4774-14-5

Literature: Journal of Heterocyclic Chemistry, , vol. 31, # 5 p. 1177 - 1180
Pyrazine, 2-chloro-,4-oxide structure

Pyrazine, 2-chl...

CAS#:6863-76-9

~%

2-Chloropyrazine structure

2-Chloropyrazine

CAS#:14508-49-7

2,5-Dichloropyrazine Structure

2,5-Dichloropyrazine

CAS#:19745-07-4

2,3-Dichloropyrazine structure

2,3-Dichloropyrazine

CAS#:4858-85-9

Detail
Literature: Journal of Chemical Research, Miniprint, , # 10 p. 2860 - 2875
Pyrazine structure

Pyrazine

CAS#:290-37-9

Water structure

Water

CAS#:7732-18-5

Chlorine structure

Chlorine

CAS#:7782-50-5

~%

2-Chloropyrazine structure

2-Chloropyrazine

CAS#:14508-49-7

Detail
Literature: US2540476 , ;

 Customs

HS Code 2933990090
Summary 2933990090. heterocyclic compounds with nitrogen hetero-atom(s) only. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:20.0%

 Synonyms

2,5-Dichloropyrazine
2,5-Dichlor-pyrazin
Pyrazine, 2,5-dichloro-
2,5-Dichloro-pyrazine
pyrazine,2,5-dichloro
3,6-DICHLOROPYRAZINE
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