8.04608

Hydrazinium hydroxide

(about 100% N₂H₅OH) for synthesis

• Synonym(s): Hydrazinium hydroxide, Hydrazine hydrate
• Empirical Formula (Hill Notation): H₄N₂ · xH₂O
• CAS Number: 7803-57-8
• Molecular Weight: 32.05 (anhydrous basis)
• MDL number: MFCD00149931
• UNSPSC Code: 12352305
• EC Index Number: 206-114-9
• NACRES: NA.22

Properties

• vapor pressure: 20 hPa ( 20 °C)
• Quality Level: 200
• form: liquid
• autoignition temp.: 280 °C
• potency: 169 mg/kg LD₅₀, oral (Rat)
• expl. lim.: 3.4-99 % (v/v)
• pH: 10-11 (20 °C, 10 g/L in H₂O)
• bp: 120.5 °C/1013 hPa
• mp: -51.7 °C
• density: 1.03 g/cm³ at 20 °C
• storage temp.: 15-25°C
• InChI: 1S/H4N2.H2O/c1-2;/h1-2H2;1H2
• InChI key: IKDUDTNKRLTJSI-UHFFFAOYSA-N

Description

Application

Hydrazinium hydroxide (N₂H₄.H₂O) can be used as a reducing agent to synthesize:

• Magnetic nickel nanoparticles by polyol process using nickel acetate as a precursor.
• Cu@Cu₂O core-shell nanoparticles via a chemical reduction method using CuSO₄.5H₂O as a precursor.

It can also be used as a reactant to prepare:
2H-indazolo[2,1-b]phthalazine-1,6,11(13H)-trione derivatives by Ce(SO₄)₂·4H₂O catalyzed condensation reaction with phthalic anhydride, aromatic aldehydes, and dimedone.

Safety Information

• pictograms: GHS02,GHS06,GHS08,GHS05,GHS09
• signalword: Danger
• hcodes: H226,H301 + H311,H314,H317,H330,H350,H410
• pcodes: P210 - P273 - P280 - P303 + P361 + P353 - P304 + P340 + P310 - P305 + P351 + P338
• Hazard Classifications: Acute Tox. 2 Inhalation - Acute Tox. 3 Dermal - Acute Tox. 3 Oral - Aquatic Acute 1 - Aquatic Chronic 1 - Carc. 1B - Eye Dam. 1 - Flam. Liq. 3 - Skin Corr. 1B - Skin Sens. 1
• Storage Class: 3 - Flammable liquids
• wgk_germany: WGK 3
• flash_point_f: 100.4 °F - closed cup - (anhydrous substance)
• flash_point_c: 38 °C - closed cup - (anhydrous substance)