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Sigma-Aldrich

Hydroxylamine sulfate

99%

Synonym(s):

Hydroxylammonium sulfate

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About This Item

Linear Formula:
(NH2OH)2 · H2SO4
CAS Number:
10039-54-0
Molecular Weight:
164.14
EC Number:
233-118-8
MDL number:
MFCD00044869
UNSPSC Code:
12352100
PubChem Substance ID:
329751902
NACRES:
NA.21

Assay

99%

form

crystals

mp

170 °C (dec.) (lit.)

SMILES string

NO.NO.OS(O)(=O)=O

InChI

1S/2H3NO.H2O4S/c2*1-2;1-5(2,3)4/h2*2H,1H2;(H2,1,2,3,4)

InChI key

VRXOQUOGDYKXFA-UHFFFAOYSA-N

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General description

Cyclohexanone oxime undergoes hydrolytic reaction with sulfuric acid to yield hydroxylamine sulfate. It reacts with sulfur dioxide to afford sulfamic acid.

Application

Hydroxylamine sulfate may be used in the following:
  • Along with NaCl for reduction during the atomic absorption spectrophotometric quantification of mercury at ppb (parts-per-billion) levels in solution.
  • As one of the constituents during the preparation of a coloring solution, impregnated in a cellulose based monitoring tape for the sensitive detection of formaldehyde gas.
  • Simultaneous estimation of hydrarine and hydroxylamine in mixtures by titration with alkaline ferricyanide in presence of zinc sulfate.
Powerful reducing agent. Converts aldehydes and ketones to oximes, and acid chlorides to hydroxamic acids. Used as catalyst, swelling agent, and copolymerization inhibitor in polymerization processes.

Signal Word

Warning

Hazard Classifications

Acute Tox. 4 Dermal - Acute Tox. 4 Oral - Aquatic Acute 1 - Carc. 2 - Eye Irrit. 2 - Met. Corr. 1 - Skin Irrit. 2 - Skin Sens. 1 - STOT RE 2 Oral

Target Organs

Blood

Storage Class Code

4.1A - Other explosive hazardous materials

WGK

WGK 3

Certificates of Analysis (COA)

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A simple and efficient approach for preparation of hydroxylamine sulfate from the acid-catalyzed hydrolysis reaction of cyclohexanone oxime.
Zhao, Fangfang, et al.
Chemical Engineering Journal, 272, 102-107 (2015)
Determination of submicrogram quantities of mercury by atomic absorption spectrophotometry.
Hatch WR and Ott WL.
Analytical Chemistry, 40(14), 2085-2087 (1968)
The Preparation of Sulfamic Acid by the Hydroxylamine--Sulfur Dioxide Reaction.
Sisler HH and Audrieth LF.
Journal of the American Chemical Society, 61(12), 3389-3391 (1939)
Oxidation of hydroxylamine by ferricyanide in presence of zinc sulfate: A rapid method for estimating hydroxylamine and hydrazine in a mixture.
Sant BR.
Analytica Chimica Acta, 20, 371-375 (1959)
Development of a monitoring tape for formaldehyde using hydroxylamine sulfate and methyl yellow.
NAKANO N, et al.
Analytical Sciences, 10(4), 641-645 (1994)

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