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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HCID 33515Generated: October 23, 2026

2,4-Dichloropyridine

2,4-Dichlorpyridine · IFLAB-BB F2108-0071 · 2,4-DICHLOROPYRIDINE · Pyridine, 2,4-dichloro- · 2,4-Dichloropyridine>2,4 dicloropyridine 98% · 2,4-Dichloropyridine,97% · 2,4-Dichloropyridine 97% · 2,4-Dichloropyridine ,98%

https://huagongshe.com/en/chemical/33515

2,4-Dichloropyridine molecular structure

Identifiers & Physical Properties

CAS No.26452-80-2
Molecular formulaC5H3Cl2N
Average molar mass147.99 g/mol
Monoisotopic mass146.96425446 g/mol
SMILESClc1ccnc(Cl)c1
InChIKeyTYPVHTOETJVYIV-UHFFFAOYSA-N
PubChem CID33515
EC No.247-717-7
DTXSIDDTXSID20181047

Chemical & Physical Properties

XLogP2.4
Topological polar surface area12.9
Hydrogen bond donors0
Hydrogen bond acceptors1
Rotatable bonds0
Heavy atoms8
Formal charge0
Complexity76.8
Melting point-1 °C
Boiling point189-190 °C (lit.) 76-78 °C/23 mmHg (lit.)
Density1.37
Refractive index1.55-1.554
Flash point189-190°C
Storage conditionsInert atmosphere,2-8°C
SolubilityChloroform
Physical stateYellow to Pale Orange Liquid
pKa (acidity coefficient)0.12±0.10(Predicted)
ColorColorless to Red to Green
BRN108666
InChIInChI=1S/C5H3Cl2N/c6-4-1-2-8-5(7)3-4/h1-3H
InChIKeyTYPVHTOETJVYIV-UHFFFAOYSA-N
SMILESC1(Cl)=NC=CC(Cl)=C1
CAS DataBase Reference26452-80-2(CAS DataBase Reference)
UNSPSC Code12352100
NACRESNA.22
GHS pictogramGHS05,GHS07
Signal wordDanger
GHS hazard statementsH302-H315-H317-H318
GHS precautionary statementsP261-P264-P280-P301+P312-P302+P352-P305+P351+P338
Personal protective equipment (PPE)Eyeshields, Faceshields, Gloves, type ABEK (EN14387) respirator filter
Hazard symbolsT,Xi,Xn
Risk statements (R)25-38-41-43-36/37/38-20/22
Safety statements (S)26-36/37/39-45-36
UN transport number2810
Water hazard class (WGK)3
RTECS numberNC3410400
Hazard NoteHarmful/Irritant
Hazard class6.1Acute Tox. 4 OralEye Dam. 1Skin Irrit. 2Skin Sens. 1
Packing groupIII
Customs code29333990
Storage class10 - Combustible liquids

Safety & Regulations

GHS classificationDangerH302 (93.8%): Harmful if swallowed [Warning Acute toxicity, oral]P261, P262, P264, P264+P265, P270, P271, P272, P280, P301+P317, P302+P352, P304+P340, P305+P351+P338, P305+P354+P338, P316, P317, P319, P321, P330, P332+P317, P333+P317, P337+P317, P361+P364, P362+P364, P403+P233, P405, and P501 (click each P-code to see the statement)Aggregated GHS information provided per 48 reports by companies from 7 notifications to the ECHA C&L Inventory. Each notification may be associated with multiple companies.
Hazard Classes and CategoriesAcute Tox. 4 (93.8%)
Personal protective equipment (PPE)Eyeshields, Faceshields, Gloves, type ABEK (EN14387) respirator filter
Water hazard class (WGK)3
RTECS numberNC3410400
UN transport number2810
Customs code29333990
Risk statements (R)25-38-41-43-36/37/38-20/22
Signal wordDanger
GHS pictogramGHS05,GHS07
Hazard symbolsT,Xi,Xn
hazard_noteHarmful/Irritant
Safety statements (S)26-36/37/39-45-36
Hazard class6.1Acute Tox. 4 OralEye Dam. 1Skin Irrit. 2Skin Sens. 1
Storage class10 - Combustible liquids
Packing groupIII
GHS hazard statementsH302-H315-H317-H318
GHS precautionary statementsP261-P264-P280-P301+P312-P302+P352-P305+P351+P338

Applications & Uses

Uses

2,4-Dichloropyridine is a versatile reactant used in the preparation of host materials for light-emitting diodes with heterocyclic cores. Also used in the preparation of sulfonylated pyridines, pyrazine and quinoline via aromatic nucleophilic substitution of azines with sodium sulfinates.