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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

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

Storage Class

3 - Flammable liquids

wgk_germany

WGK 3

flash_point_f

204.8 °F - closed cup

flash_point_c

96 °C - closed cup

ppe

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

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Certificates of Analysis (COA)

Lot/Batch Number
MKCW7456
MKCW1777
BCCL4958
BCCM4263
BCCL1313

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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
Reduction of aromatic nitro compounds with hydrazine hydrate in the presence of an iron oxide hydroxide catalyst. I. The reduction of monosubstituted nitrobenzenes with hydrazine hydrate in the presence of ferrihydrite.
Lauwiner M, et al.
Applied Catalysis A: General, 172(1), 141-148 (1998)
Graphite catalyzed reduction of aromatic and aliphatic nitro compounds with hydrazine hydrate.
Byung HH, et al.
Tetrahedron Letters, 26(50), 6233-6234 (1985)
Catalytic reduction of nitroarenes with hydrazine hydrate in suitable solvents.
Ayyangar NR, et al.
Synthesis, 1981(08), 640-643 (1981)
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)
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