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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HCID 285736Generated: October 23, 2026

2-Chloropyridine-3,4-diamine

NSC 143160 · oropyridine-3,4-diamine · 2-Chloropyridin-3,4-diamine · 2-Chloro-3,4-pyridinediamine · 2-Chloro-3,4-diaminopyridine · 3,4-Diamino-2-chloropyridine · 2-Chloro-3,4-pyridinediam... · 3,4-Pyridinediamine, 2-chloro-

https://huagongshe.com/en/chemical/285736

2-Chloropyridine-3,4-diamine molecular structure

Identifiers & Physical Properties

CAS No.39217-08-8
Molecular formulaC5H6ClN3
Average molar mass143.57 g/mol
Monoisotopic mass143.0250249 g/mol
SMILESNc1ccnc(Cl)c1N
InChIKeyPWOIYBVEDIFBEO-UHFFFAOYSA-N
PubChem CID285736
EC No.686-011-7
DTXSIDDTXSID90301412

Chemical & Physical Properties

XLogP0.5
Topological polar surface area64.9
Hydrogen bond donors2
Hydrogen bond acceptors3
Rotatable bonds0
Heavy atoms9
Formal charge0
Complexity98
Melting point158-163℃
Boiling point381.3±37.0 °C(Predicted)
Density1.447±0.06 g/cm3(Predicted)
Storage conditionsunder inert gas (nitrogen or Argon) at 2–8 °C
Solubilitysoluble in Methanol
Physical statepowder to crystal
pKa (acidity coefficient)4.79±0.42(Predicted)
ColorLight yellow to Brown to Dark green
InChI1S/C5H6ClN3/c6-5-4(8)3(7)1-2-9-5/h1-2H,8H2,(H2,7,9)
InChIKeyPWOIYBVEDIFBEO-UHFFFAOYSA-N
SMILESNc1ccnc(Cl)c1N
UNSPSC Code12352100
NACRESNA.22
GHS pictogramGHS06
Signal wordDanger
GHS hazard statementsH301-H317-H319
GHS precautionary statementsP280-P301+P310+P330-P302+P352-P305+P351+P338
Hazard symbolsXi,Xn
Risk statements (R)36/37/38-43-36-22
Safety statements (S)26-37-36/37-24/25-36/37/39
UN transport number2811
Water hazard class (WGK)3
Hazard class6.1Acute Tox. 3 OralEye Irrit. 2Skin Sens. 1
Packing groupⅢ
Customs code29333990
Storage class6.1C - Combustible acute toxic Cat.3toxic compounds or compounds which causing chronic effects

Safety & Regulations

GHS classificationDangerH301 (97.7%): Toxic if swallowed [Danger Acute toxicity, oral]H317 (97.7%): May cause an allergic skin reaction [Warning Sensitization, Skin]H319 (100%): Causes serious eye irritation [Warning Serious eye damage/eye irritation]P261, P264, P264+P265, P270, P272, P280, P301+P316, P302+P352, P305+P351+P338, P321, P330, P333+P317, P337+P317, P362+P364, P405, and P501 (click each P-code to see the statement)Aggregated GHS information provided per 43 reports by companies from 4 notifications to the ECHA C&L Inventory. Each notification may be associated with multiple companies.Information may vary between notifications depending on impurities, additives, and other factors. The percentage value in parenthesis indicates the notified classification ratio from companies that provide hazard codes. Only hazard codes with percentage values above 10% are shown. For more detailed information, please visit ECHA C&L website.
Hazard Classes and CategoriesAcute Tox. 3 (97.7%)Skin Sens. 1 (97.7%)Eye Irrit. 2A (100%)
Water hazard class (WGK)3
UN transport number2811
Customs code29333990
Risk statements (R)36/37/38-43-36-22
Signal wordDanger
GHS pictogramGHS06
Hazard symbolsXi,Xn
Safety statements (S)26-37-36/37-24/25-36/37/39
Hazard class6.1Acute Tox. 3 OralEye Irrit. 2Skin Sens. 1
Storage class6.1C - Combustible acute toxic Cat.3toxic compounds or compounds which causing chronic effects
Packing groupⅢ
GHS hazard statementsH301-H317-H319
GHS precautionary statementsP280-P301+P310+P330-P302+P352-P305+P351+P338

Applications & Uses

Uses

2-Chloropyridine-3,4-diamine