119775-10-9 - ChemicalBook India

CHEMICAL AND PHYSICAL PROPERTIES

Physical Description	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 skin absorption. Corrosive to tissue. Produces toxic oxides of nitrogen during combustion. Used as a rocket propellant and in fuel cells.
Color/Form	Colorless oily liquid
Odor	Penetrating odor resembling ammonia.
Boiling Point	236.3 °F at 760 mmHg (EPA, 1998)
Melting Point	36 °F (EPA, 1998)
Flash Point	125.6 °F (EPA, 1998)
Solubility	Miscible (NIOSH, 2023)
Density	1.011 at 59 °F (EPA, 1998) - Denser than water; will sink
Vapor Density	Relative vapor density (air = 1): 1.1
Vapor Pressure	14.4 mmHg at 77 °F (EPA, 1998)
LogP	log Kow = -2.07
Stability/Shelf Life	Stable under recommended storage conditions.
Autoignition Temperature	518 °F (USCG, 1999)
Decomposition	Hazardous decomposition products formed under fire conditions - Nitrogen oxides (NOx).
Viscosity	0.974 uPa-sec at 20 °C
Heat of Combustion	-8345 btu/Lb = -4636 cal/g = -194.1X10+5 J/kg
Heat of Vaporization	44.7 kJ/mol at 25 °C
pH	Aqueous solutions of hydrazine are highly alkaline. pH of a 64 wt% aqueous solution of hydrazine is 12.75.
Surface Tension	66.7 mN/m at 25 °C
Ionization Potential	8.93 eV
Odor Threshold	Odor Threshold Low: 3.0 [mmHg] Odor Threshold High: 4.0 [mmHg] AIHA detection odor threshold AIHA (mean = 3.7 ppm)
Refractive Index	Surface tension 74.3 mN/m at 25 °C: Viscosity: 1.5 mPa.s at 25 °C: Index of refraction: 1.4644 at 25 °C/D; Heat of formation -242.71 kJ/mol /Hydrazine hydrate/
Dissociation Constants	pKa = 7.96
Other Experimental Properties	Forms salts with inorganic acids. Highly polar solvent. Powerful reducing agent.
Chemical Classes	Nitrogen Compounds -> Hydrazines

COMPUTED DESCRIPTORS

Molecular Weight	32.046 g/mol
XLogP3	-1.5
Hydrogen Bond Donor Count	2
Hydrogen Bond Acceptor Count	2
Rotatable Bond Count	0
Exact Mass	32.037448136 g/mol
Monoisotopic Mass	32.037448136 g/mol
Topological Polar Surface Area	52 Å²
Heavy Atom Count	2
Formal Charge	0
Complexity	0
Isotope Atom Count	0
Defined Atom Stereocenter Count	0
Undefined Atom Stereocenter Count	0
Defined Bond Stereocenter Count	0
Undefined Bond Stereocenter Count	0
Covalently-Bonded Unit Count	1
Compound Is Canonicalized	Yes

PRODUCT INTRODUCTION

description

Hydrazines are clear, colorless liquids with an ammonia-like odor. There are many kinds of hydrazine compounds, including hydrazine, 1,1-dimethylhydrazine, and 1,2-dimethylhydrazine. Small amounts of hydrazine occur naturally in plants. Most hydrazines are manufactured for use as rocket propellants and fuels, boiler water treatments, chemical reactants, medicines, and in cancer research. Hydrazines are highly reactive and easily catch fire.