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Sigma-Aldrich

Hydrazine monohydrochloride

97%

Synonym(s):

Hydrazinium chloride, Hydrazinium monochloride

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About This Item

Linear Formula:
NH2NH2 · HCl
CAS Number:
2644-70-4
Molecular Weight:
68.51
EC Number:
220-154-4
MDL number:
MFCD00044368
UNSPSC Code:
12352100
PubChem Substance ID:
24852940
NACRES:
NA.22

Assay

97%

form

solid

mp

89 °C (lit.)

SMILES string

Cl[H].NN

InChI

1S/ClH.H4N2/c;1-2/h1H;1-2H2

InChI key

BIVUUOPIAYRCAP-UHFFFAOYSA-N

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General description

Hydrazine monohydrochloride is commonly used as a reagent in the synthesis of pyrazoles.

Application

Hydrazine monohydrochloride has been used:
  • as catalyst in the synthesis of titanium oxide polymers via catalytic sol-gel process
  • in fabrication of amorphous titanium dioxide (TiO2) thin films exhibiting high refractive indices and high transparency
  • in preparation of ethyl 3-ethoxy-1H-pyrazole-4-carboxylate

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Signal Word

Danger

Hazard Classifications

Acute Tox. 3 Dermal - Acute Tox. 3 Inhalation - Acute Tox. 3 Oral - Aquatic Acute 1 - Aquatic Chronic 1 - Carc. 1B - Skin Sens. 1

Storage Class Code

6.1C - Combustible acute toxic Cat.3 / toxic compounds or compounds which causing chronic effects

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Certificates of Analysis (COA)

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Sandrine Guillou et al.
Chemistry (Weinheim an der Bergstrasse, Germany), 16(15), 4669-4677 (2010-03-25)
Our program, which has focused on the preparation of new pyrazole derivatives, has led us to report here an original and simplified preparation of ethyl 3-ethoxy-1H-pyrazole-4-carboxylate. This is based on the reaction of hydrazine monohydrochloride and diethyl 2-(ethoxymethylene)malonate. Further transformations
Tomáš Taubner et al.
International journal of biological macromolecules, 103, 202-207 (2017-05-21)
Alginic acid is a suitable material for modification to prepare new derivatives because of presence of its carboxyl groups. The high content of carboxyl groups over the entire length of its chain renders it an easily modifiable material with a
Ahmed M Elbedwehy et al.
Polymers, 11(12) (2019-11-30)
Super adsorbent polymers can be considered to be a very efficient solution for wastewater treatment. In general, their adsorption capacities depend on the type and amount of the functional groups present on the surface of the polymers, while their economic
Wataru Shimizu et al.
Journal of nanoscience and nanotechnology, 12(5), 3732-3738 (2012-08-03)
Titanium oxide polymers having a low-fractal dimension (d(f) < 2) were rapidly synthesized from titanium tetra-n-butoxide via a catalytic sol-gel process with a hydrazine monohydrochloride catalyst. Different from conventional sol-gel processes aimed at producing low-fractal dimension titanium oxide polymers, the
An efficient synthesis of substituted pyrazoles from one-pot reaction of ketones, aldehydes, and hydrazine monohydrochloride
V Lellek, et al.
Synlett, 29, 1071-1075 (2018)
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