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225819

Sigma-Aldrich

Hydrazine hydrate

reagent grade, N2H4 50-60 %

Synonym(s):

Hydrazinium hydroxide

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About This Item

Linear Formula:
NH2NH2 · xH2O
CAS Number:
10217-52-4
Molecular Weight:
32.05 (anhydrous basis)
EC Number:
206-114-9
MDL number:
MFCD00149931
UNSPSC Code:
12352302
PubChem Substance ID:
57647990
NACRES:
NA.21

grade

reagent grade

Quality Level

200

vapor density

>1 (vs air)

vapor pressure

5 mmHg ( 25 °C)

form

liquid

composition

Degree of hydration, ~1.5
N2H4, 50-60%

expl. lim.

99.99 %

concentration

50.0-60.0% (%H4N2 by Na2S2O3 basis, titration)

density

1.029 g/mL at 25 °C (lit.)

SMILES string

NN.[H]O[H]

InChI

1S/H4N2.H2O/c1-2;/h1-2H2;1H2

InChI key

IKDUDTNKRLTJSI-UHFFFAOYSA-N

Related Categories

General description

The addition of hydrazine hydrate to reduced graphene oxide (RGO) counter electrode improves its performance in dye-sensitized solar cells (DSSC).

Application

Hydrazine hydrate has been used for the deproteination of the enamel samples in a study. It may be used as a reducing agent in the following:
  • Preparation of silver nanoparticles.
  • Transformation of monosubstituted nitrobenzene derivatives to the corresponding anilines.
  • Along with graphite for the conversion of nitro compounds (aromatic and aliphatic) to the amino compounds.
Hydrazine hydrate may be used to prepare:
  • 3-(2-Benzyloxy-6-hydroxyphenyl)-5-styrylpyrazoles by reacting with 5-benzyloxy-2-styrylchromones.
  • 3,5-Diphenyl-2-pyrazoline derivatives by reacting with 1,3-diphenyl-2-propen-1-one.
  • 3′-Aryl-1,2,3,4,4′,5′-hexahydrospiro[quinoxalin-2,5′-pyrazol]-3-ones by reacting with 3-arylacylidene-3,4-dihydroquinoxalin-2(1H)-ones.
  • It may also be used in the catalytic reduction of nitroarenes to aromatic amines.

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Danger

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

wgk_germany

WGK 3

flash_point_f

204.8 °F

flash_point_c

96 °C

ppe

Faceshields, Gloves, Goggles, type ABEK (EN14387) respirator filter

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Hydrazine acetate 97%

Sigma-Aldrich

259748

Hydrazine acetate

Hydrazine dihydrochloride ≥98%

Sigma-Aldrich

216208

Hydrazine dihydrochloride

Synthesis and molecular structure of 3-(2-benzyloxy-6-hydroxyphenyl)-5-styrylpyrazoles. Reaction of 2-styrylchromones and hydrazine hydrate.
Pinto DC, et al.
Tetrahedron, 55(33), 10187-10200 (1999)
Effects of hydrazine hydrate treatment on the performance of reduced graphene oxide film as counter electrode in dye-sensitized solar cells.
Qiu L, et al.
Applied Surface Science, 319, 339-343 (2014)
T Baumann et al.
Scientific reports, 5, 15194-15194 (2015-10-16)
Enamel proteins form a scaffold for growing hydroxyapatite crystals during enamel formation. They are then almost completely degraded during enamel maturation, resulting in a protein content of only 1% (w/v) in mature enamel. Nevertheless, this small amount of remaining proteins
Graphite catalyzed reduction of aromatic and aliphatic nitro compounds with hydrazine hydrate.
Byung HH, et al.
Tetrahedron Letters, 26(50), 6233-6234 (1985)
Synthesis and antidepressant activities of some 3, 5-diphenyl-2-pyrazolines.
Palaska E, et al.
The Journal of Organic Chemistry, 36(6), 539-543 (2001)
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