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File:Hydrazin.svg · Wikimedia Commons · See Wikimedia Commons

EntityQ58447· pop 63· linked from 1,200 articles

هیدرازین

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Also known as diazane, tetrahydridodinitrogen, H2NNH2, N2H4, nitrogen hydride, diamine, hydrazin, inorganic hydrazine

OverviewAI-generated

Hydrazine is a chemical compound with the formula N₂H₄, also written as H₄N₂. It has a molecular mass of 32.05 and a density of 1.01. The substance melts at 36 and boils at 236. Its vapor pressure is 10, and it has an electric dipole moment of 1.75. The pKa of hydrazine is 8.10, while its ionization energy is 8.93.

Safety data indicates that hydrazine has a flash point of 99. The lower flammable limit is 2.9, and the upper flammable limit is 98. The immediately dangerous to life or health concentration is 65.5. Exposure limits include a time-weighted average of 1.3 and a ceiling of 0.04. The compound has two hydrogen bond donors and two hydrogen bond acceptors, with a topological polar surface area of 52.

Synthesized by Vinony from 32 facts across 4 sources: Wikidata, PubChem, PubMed, Vinony graph. Generated from structured data (not the Wikipedia text) and checked against those facts — may still contain errors.

Chemical data

Formula: H4N2
Molecular weight: 32.046 g/mol
IUPAC name: hydrazine
SMILES: NN
InChIKey: OAKJQQAXSVQMHS-UHFFFAOYSA-N
XLogP: -1.5
Polar surface area: 52 Å²
H-bond donors: 2
H-bond acceptors: 2
Formal charge: 0

via PubChem

Drug data · ChEMBL

Molecule type: Small molecule
Indications: dental caries

via ChEMBL · EBI

Research

61,119 papers

Bacterial Hydrazine Biosynthetic Pathways Featuring Cupin/Methionyl tRNA Synthetase-like Enzymes.ReviewChembiochem : a European journal of chemical biology · 2024Matsuda K, Wakimoto TDOI: 10.1002/cbic.202300874
Hydrazine.ReviewIARC monographs on the evaluation of carcinogenic risks to humans · 1999
The Hydrazine Moiety in the Synthesis of Modified Nucleosides and Nucleotides.ReviewChemMedChem · 2024Guillou A, Peyrottes S, Vasseur JJ et al.DOI: 10.1002/cmdc.202400234
Hydrazine Exposé: The Next-Generation Fluorescent Probe.ACS sensors · 2019Jung Y, Ju IG, Choe YH et al.DOI: 10.1021/acssensors.8b01429
Hydrazine reagents as derivatizing agents in environmental analysis--a critical review.ReviewFresenius' journal of analytical chemistry · 2000Vogel M, Büldt A, Karst UDOI: 10.1007/s002160051572
Natural hydrazine-containing compounds: Biosynthesis, isolation, biological activities and synthesis.ReviewBioorganic & medicinal chemistry · 2014Le Goff G, Ouazzani JDOI: 10.1016/j.bmc.2014.10.011
Risk assessment of trace hydrazine in a 2020 bottled water-associated nonviral hepatitis outbreak.ReviewCritical reviews in toxicology · 2025Deckard BM, McCauley KM, Stevens ME et al.DOI: 10.1080/10408444.2025.2600331
The Toxicity, Pathophysiology, and Treatment of Acute Hydrazine Propellant Exposure: A Systematic Review.Military medicine · 2021Nguyen HN, Chenoweth JA, Bebarta VS et al.DOI: 10.1093/milmed/usaa429

Wikidata facts

Subclass of: azane
Has part: hydrogen
Mass: 32.05
Has use: monopropellant

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Commons category: Hydrazine
canonical SMILES: NN
NIOSH Pocket Guide ID: 0329
density: 1.01
immediately dangerous to life or health: 65.5
vapor pressure: 10
lower flammable limit: 2.9
upper flammable limit: 98
ionization energy: 8.10
time-weighted average exposure limit: 1.3
ceiling exposure limit: 0.04
pKa: 8.10
chemical formula: H₄N₂
conjugate acid: hydrazinium
electric dipole moment: 1.75
melting point: 1.4
boiling point: 113.55
flash point: 99
different from: hydrazine
discoverer or inventor: Cornelis Adriaan Lobry van Troostenburg de Bruyn

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