Skip to Content
Merck
CN

480975

Hydroxylamine-O-sulfonic acid

99.998%

Synonym(s):

(Aminooxy)(hydroxy)sulfane dioxide, (Aminooxy)sulfonic acid, Amidoperoxymonosulfuric acid, Amidosulfonic peracid, Aminomonopersulfuric acid, Ammonia-N-oxide-O-sulfonic acid betaine, Permonosulfamic acid, Sulfoperamidic acid

Sign In to View Organizational & Contract Pricing

Select a Size

About This Item

Linear Formula:
H2NOSO3H
CAS Number:
2950-43-8
Molecular Weight:
113.09
EC Number:
220-971-6
MDL number:
MFCD00011604
UNSPSC Code:
12352100
PubChem Substance ID:
24871729
NACRES:
NA.22

Key Documents

View All Documentation
Technical Service
Need help? Our team of experienced scientists is here for you.
Let Us Assist
Technical Service
Need help? Our team of experienced scientists is here for you.
Let Us Assist

Quality Level

200

Assay

99.998%

mp

210 °C (dec.) (lit.)

storage temp.

2-8°C

SMILES string

NOS(O)(=O)=O

InChI

1S/H3NO4S/c1-5-6(2,3)4/h1H2,(H,2,3,4)

InChI key

DQPBABKTKYNPMH-UHFFFAOYSA-N

Looking for similar products? Visit Product Comparison Guide

Related Categories

General description

Hydroxylamine-O-sulfonic acid (HOSA), an O-substituted hydroxylamine, is a widely used aminating agent. It can behave as a nucleophile as well as an electrophile. The conversion of organoboranes obtained from hydroboration of olefins to amines using HOSA has been reported.

Application

Hydroxylamine-O-sulfonic acid (HOSA) may be used to synthesize (Z)-1H-purin-6(7H)-ylideneaminooxysulfonic acid.
HOSA may be used as an aminating reagent in the synthesis of:
  • 1-aminotetrazoles and 2-aminotetrazoles
  • N-aminopiperidine (NAPP)
  • 1H,1′ H-2,2′-biimidazole-1,1′-diamine

Signal Word

Danger

Hazard Statements

H302,H314,H410

Hazard Classifications

Acute Tox. 4 Oral - Aquatic Acute 1 - Aquatic Chronic 3 - Eye Dam. 1 - Skin Corr. 1B

Storage Class Code

8A - Combustible corrosive hazardous materials

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Choose from one of the most recent versions:

Certificates of Analysis (COA)

Lot/Batch Number
BCCM4592
BCCK8636
BCCG8992
BCCG6881
BCBZ5283

Don't see the Right Version?

If you require a particular version, you can look up a specific certificate by the Lot or Batch number.

Search for a COA

Already Own This Product?

Find documentation for the products that you have recently purchased in the Document Library.

Visit the Document Library

A New Strategy for the Preparation of N-Aminopiperidine Using Hydroxylamine-O-Sulfonic Acid: Synthesis, Kinetic Modelling, Phase Equilibria, Extraction and Processes.
Labarthe E, et al.
Advances in Chemical Engineering and Science, 3(2) (2013)
Hydroxylamine-O-sulfonic Acid.
Erdik E and Saczewski J.
e-EROS Encyclopedia of Reagents for Organic Synthesis. (2013)
Synthesis and molecular structure of (Z)-1H-purin-6-ylideneaminooxysulfonic acid: a possible secondary metabolite of adenine.
Saczewski J and Gdaniec M.
Heterocyclic Communications, 18(3), 109-112 (2012)
Amination of tetrazoles with hydroxylamine-O-sulfonic acid: 1-and 2-aminotetrazoles.
Raap R.
Canadian Journal of Chemistry, 47(19), 3677-3681 (1969)
N-Trinitroethylamino functionalization of nitroimidazoles: a new strategy for high performance energetic materials.
Yin P, et al.
Journal of Material Chemistry A, 1(25), 7500-7510 (2013)
View All Related Papers

Our team of scientists has experience in all areas of research including Life Science, Material Science, Chemical Synthesis, Chromatography, Analytical and many others.

Contact Technical Service