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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HCID 230373Generated: October 23, 2026

Aminopyridazine

3-AMINOPYRIDAZINE · aminopyridazine · Pyridazine-3-amine · Pyridazin-3-ylamine · 3-PYRIDAZINAMINE · 2-AMINOPYRIDAZINE · Pyridazin-2-amine · PYRIDAZIN-3-AMINE

https://huagongshe.com/en/chemical/230373

Aminopyridazine molecular structure

Identifiers & Physical Properties

CAS No.5469-70-5
Molecular formulaC4H5N3
Average molar mass95.1 g/mol
Monoisotopic mass95.04834717 g/mol
SMILESNc1cccnn1
InChIKeyLETVJWLLIMJADE-UHFFFAOYSA-N
PubChem CID230373
ChEMBLCHEMBL5170155
EC No.639-365-1
DTXSIDDTXSID30282256

Chemical & Physical Properties

XLogP-1.2
Topological polar surface area51.8
Hydrogen bond donors1
Hydrogen bond acceptors3
Rotatable bonds0
Heavy atoms7
Formal charge0
Complexity54
Melting point171 °C
Boiling point326.2±15.0 °C(Predicted)
Density1.216±0.06 g/cm3(Predicted)
Storage conditionsKeep in dark place,Sealed in dry,Room Temperature
Solubilitysoluble in Methanol
pKa (acidity coefficient)4.88±0.10(Predicted)
Physical stateSolid
ColorWhite to pale yellow
InChIInChI=1S/C4H5N3/c5-4-2-1-3-6-7-4/h1-3H,(H2,5,7)
InChIKeyLETVJWLLIMJADE-UHFFFAOYSA-N
SMILESC1(N)=NN=CC=C1
CAS DataBase Reference5469-70-5(CAS DataBase Reference)
UNSPSC Code12352100
NACRESNA.22
GHS pictogramGHS07
Signal wordWarning
GHS hazard statementsH302-H319
GHS precautionary statementsP264-P270-P280-P301+P312-P305+P351+P338-P337+P313
Hazard symbolsXi,Xn
Risk statements (R)22-36
Safety statements (S)26-24/25
Water hazard class (WGK)3
Hazard classIRRITANTAcute Tox. 4 OralEye Irrit. 2
Customs code29339900
Storage class11 - Combustible Solids

Safety & Regulations

GHS classificationWarningH302 (91.3%): Harmful if swallowed [Warning Acute toxicity, oral]H319 (100%): Causes serious eye irritation [Warning Serious eye damage/eye irritation]P264, P264+P265, P270, P280, P301+P317, P305+P351+P338, P330, P337+P317, and P501 (click each P-code to see the statement)Aggregated GHS information provided per 46 reports by companies from 5 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. 4 (91.3%)Eye Irrit. 2A (100%)
Water hazard class (WGK)3
Customs code29339900
Risk statements (R)22-36
Signal wordWarning
GHS pictogramGHS07
Hazard symbolsXi,Xn
Safety statements (S)26-24/25
Hazard classIRRITANTAcute Tox. 4 OralEye Irrit. 2
Storage class11 - Combustible Solids
GHS hazard statementsH302-H319
GHS precautionary statementsP264-P270-P280-P301+P312-P305+P351+P338-P337+P313

Applications & Uses

Uses

It is an important raw material and intermediate used in organic synthesis, pharmaceuticals, agrochemicals and dyestuffs.