H

Hydrazine

IUPAC: hydrazine

H4N2 Bases & Alkalis CAS 302-01-2
AllChemicals — The Online Chemical Glossary | https://allchemicals.info/chemical/hydrazine
Expert Written | Fact Checked | Sources Cited | AllChemicals Editorial Team
Quick Reference
Formula / NotationH4N2
CAS Number302-01-2
Molecular Weight32.046
Melting Point36 °F (EPA, 1998)
Boiling Point236.3 °F at 760 mmHg (EPA, 1998)
Density1.011 at 59 °F (EPA, 1998) - Denser than water; will sink
SolubilityMiscible (NIOSH, 2024)
AppearanceHydrazine, anhydrous appears as a colorless, fuming oily liquid with an ammonia-like odor. Flash point 99 °F. Explodes during distillation if traces of air are present. Toxic by inhalation and by ...
Also Known As302-01-2; Levoxine; Hydrazine base; Oxytreat 35; Nitrogen hydride; Hydrazin; Hydrazyna; Hydrazine, anhydrous; Hydrazine (anhydrous); RCRA waste number U133
CategoryBases & Alkalis

What is Hydrazine?

Hydrazine can cause cancer according to an independent committee of scientific and health experts.

Formula & Notation

H4N2

IUPAC Name: hydrazine

Other Names / Synonyms: 302-01-2; Levoxine; Hydrazine base; Oxytreat 35; Nitrogen hydride; Hydrazin; Hydrazyna; Hydrazine, anhydrous; Hydrazine (anhydrous); RCRA waste number U133

Properties & Characteristics

Appearance: Hydrazine, anhydrous appears as a colorless, fuming oily liquid with an ammonia-like odor. Flash point 99 °F. Explodes during distillation if traces of air are present. Toxic by inhalation and by .... Molecular formula: H4N2. Molecular weight: 32.046 g/mol. Boiling point: 236.3 °F at 760 mmHg (EPA, 1998). Melting point: 36 °F (EPA, 1998). Density: 1.011 at 59 °F (EPA, 1998) - Denser than water; will sink. Solubility: Miscible (NIOSH, 2024). Vapor pressure: 14.4 mmHg at 77 °F (EPA, 1998). LogP: -1.5.

Physical Data

PropertyValue
Melting Point36 °F (EPA, 1998)
Boiling Point236.3 °F at 760 mmHg (EPA, 1998)
Density1.011 at 59 °F (EPA, 1998) - Denser than water; will sink
Molecular Weight32.046
SolubilityMiscible (NIOSH, 2024)
AppearanceHydrazine, anhydrous appears as a colorless, fuming oily liquid with an ammonia-like odor. Flash point 99 °F. Explodes during distillation if traces of air are present. Toxic by inhalation and by ...

Uses & Applications

Used in chemical manufacturing, pH adjustment, saponification, water treatment, and as a laboratory reagent.

Safety Information

Corrosive or irritant. Causes burns to skin and eyes. Store away from acids. Wear protective gloves and goggles. Consult SDS before use.

Always consult the SDS/MSDS before handling any chemical. This information is for educational purposes only.

Key Facts

Term Hydrazine
Formula H4N2
CAS Number 302-01-2
Molecular Weight 32.046
Category Bases & Alkalis
Index All "H" terms
Synonyms 302-01-2; Levoxine; Hydrazine base; Oxytreat 35; Nitrogen hydride; Hydrazin; Hydrazyna; Hydrazine, anhydrous; Hydrazine (anhydrous); RCRA waste number U133

Frequently Asked Questions

Hydrazine can cause cancer according to an independent committee of scientific and health experts.

More "H" Terms

1-Hexanol C6H14O 2-Hydroxyethyl methacrylate C6H10O3 4-Hydroxybenzaldehyde C7H6O2 Haber Process N₂ + 3H₂ ⇌ 2NH₃ | ΔH = −92 kJ/mol Hafnium Hf Half Cell Half Life Half-Cell E = E° − (RT/nF)lnQ Half-Life A(t) = A₀e^(−λt); t½ = ln2/λ Half-Reaction Halide X⁻ (e.g., F⁻, Cl⁻, Br⁻, I⁻) Halogen F₂, Cl₂, Br₂, I₂, At; Group 17; ns²np⁵ valence configuration
View all "H" terms →
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
Editorial standards: Chemical data is sourced from peer-reviewed literature, CAS Registry, NIST WebBook, and PubChem. Safety information reflects guidance from OSHA, ECHA, and IAEA. For educational purposes only — always consult official SDS documentation and qualified professionals before handling chemicals.

AllChemicals.info — The Online Chemical Glossary | https://allchemicals.info/chemical/hydrazine

For educational purposes only. Verify all information before use.