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225819

Sigma-Aldrich

Hydrazine hydrate

reagent grade, N2H4 50-60 %

Synonyme(s) :

Hydrazinium hydroxide

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About This Item

Formule linéaire :
NH2NH2 · xH2O
Numéro CAS:
10217-52-4
Poids moléculaire :
32.05 (anhydrous basis)
Numéro CE :
206-114-9
Numéro MDL:
MFCD00149931
Code UNSPSC :
12352302
ID de substance PubChem :
57647990
Nomenclature NACRES :
NA.21

Qualité

reagent grade

Niveau de qualité

200

Densité de vapeur

>1 (vs air)

Pression de vapeur

5 mmHg ( 25 °C)

Forme

liquid

Composition

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

Limite d'explosivité

99.99 %

Concentration

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

Densité

1.029 g/mL at 25 °C (lit.)

Chaîne SMILES 

NN.[H]O[H]

InChI

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

Clé InChI

IKDUDTNKRLTJSI-UHFFFAOYSA-N

Description générale

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.

Produit(s) apparenté(s)

Réf. du produit
Description
Tarif

Mention d'avertissement

Danger

Classification des risques

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

Code de la classe de stockage

3 - Flammable liquids

Classe de danger pour l'eau (WGK)

WGK 3

Point d'éclair (°F)

204.8 °F - closed cup

Point d'éclair (°C)

96 °C - closed cup

Équipement de protection individuelle

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

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Certificats d'analyse (COA)

Lot/Batch Number
MKCW7456
MKCW1777
BCCL4958
BCCM5374
BCCM4263

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Graphite catalyzed reduction of aromatic and aliphatic nitro compounds with hydrazine hydrate.
Byung HH, et al.
Tetrahedron Letters, 26(50), 6233-6234 (1985)
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)
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)
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
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