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216194

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
Pricing and availability is not currently available.

Assay

97%

form

solid

mp

89 °C (lit.)

functional group

hydrazine

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.[1]

Application

Hydrazine monohydrochloride has been used:
  • as catalyst in the synthesis of titanium oxide polymers via catalytic sol-gel process[2]
  • in fabrication of amorphous titanium dioxide (TiO2) thin films exhibiting high refractive indices and high transparency[3]
  • in preparation of ethyl 3-ethoxy-1H-pyrazole-4-carboxylate[4]

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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

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Certificates of Analysis (COA)

Lot/Batch Number
WXBF4988V
WXBF2224V
WXBD8386V
MKCQ5808
MKCM1850

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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
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
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
Wataru Shimizu et al.
Langmuir : the ACS journal of surfaces and colloids, 28(33), 12245-12255 (2012-07-24)
Amorphous titanium dioxide (TiO(2)) thin films exhibiting high refractive indices (n ≈ 2.1) and high transparency were fabricated by spin-coating titanium oxide liquid precursors having a weakly branched polymeric structure. The precursor solution was prepared from titanium tetra-n-butoxide (TTBO) via
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
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Questions

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  1. How can I determine the shelf life / expiration / retest date of this product?

    1 answer

    1. If this product has an expiration or retest date, it will be shown on the Certificate of Analysis (COA, CofA). If there is no retest or expiration date listed on the product's COA, we do not have suitable stability data to determine a shelf life. For these products, the only date on the COA will be the release date; a retest, expiration, or use-by-date will not be displayed.
      For all products, we recommend handling per defined conditions as printed in our product literature and website product descriptions. We recommend that products should be routinely inspected by customers to ensure they perform as expected.
      For products without retest or expiration dates, our standard warranty of 1 year from the date of shipment is applicable.
      For more information, please refer to the Product Dating Information document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/449/386/product-dating-information-mk.pdf

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  2. How is shipping temperature determined? And how is it related to the product storage temperature?

    1 answer

    1. Products may be shipped at a different temperature than the recommended long-term storage temperature. If the product quality is sensitive to short-term exposure to conditions other than the recommended long-term storage, it will be shipped on wet or dry-ice. If the product quality is NOT affected by short-term exposure to conditions other than the recommended long-term storage, it will be shipped at ambient temperature. As shipping routes are configured for minimum transit times, shipping at ambient temperature helps control shipping costs for our customers. For more information, please refer to the Storage and Transport Conditions document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/316/622/storage-transport-conditions-mk.pdf

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