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Related Concept Videos

Weak Base Solutions03:21

Weak Base Solutions

Some compounds produce hydroxide ions when dissolved by chemically reacting with water molecules. In all cases, these compounds react only partially and so are classified as weak bases. These types of compounds are also abundant in nature and important commodities in various technologies. For example, global production of the weak base ammonia is typically well over 100 metric tons annually, being widely used as an agricultural fertilizer, a raw material for chemical synthesis of other...
Amines to Sulfonamides: The Hinsberg Test01:23

Amines to Sulfonamides: The Hinsberg Test

The Hinsberg test is a method to identify primary, secondary and tertiary amines, named after its pioneer, Oscar Hinsberg. Here, amines are treated with benzenesulfonyl chloride, also known as the Hinsberg reagent, in the presence of an excess of aqueous base, followed by acidification. Based on the nature of the amines, different changes are observed.
Generally, a primary amine reacts with the Hinsberg reagent to produce an N-substituted benzenesulfonamide. The electron-withdrawing sulfonyl...
Titration of a Weak Base with a Strong Acid01:20

Titration of a Weak Base with a Strong Acid

The titration curve of a weak base like ammonia with a strong acid like hydrochloric acid is the mirror image of the titration curve of a weak acid with a strong base.
Using the ICE table and substituting the Kb value, we calculate the initial pH of 50 mL of 0.1 M ammonia to be 11.11. Addition of 25 mL of 0.1 M hydrochloric acid to this solution of ammonia results in a buffer with an equal concentration of ammonia and ammonium ions. The pH of this buffer can be calculated by substituting these...
Basicity of Heterocyclic Aromatic Amines01:25

Basicity of Heterocyclic Aromatic Amines

Heterocyclic amines, where the N atom is a part of an alicyclic system, are similar in basicity to alkylamines. Interestingly, the heterocyclic amine having a nitrogen atom as part of an aromatic ring has much less basicity than its corresponding alicyclic counterpart. For this reason, as presented in Figure 1, piperidine (pKb = 2.8) is significantly more basic than pyridine (pKb = 8.8).
NMR Spectroscopy Of Amines01:19

NMR Spectroscopy Of Amines

In proton NMR spectroscopy, primary amines and secondary amines showcase their N–H protons as a broad signal in the chemical shift range between δ 0.5 and 5 ppm. The exact position in this range depends on several factors, including sample concentration, hydrogen bonding, and the type of solvent used. Since amine protons undergo fast proton exchange in solution, the protons are labile and therefore do not participate in any splitting with adjacent protons. Thus, the observed peak is broad and...
Preparation of Amines: Alkylation of Ammonia and Amines01:30

Preparation of Amines: Alkylation of Ammonia and Amines

Alkylation is one of the methods used to prepare amines. Direct alkylation of ammonia or a primary amine with an alkyl halide gives polyalkylated amines along with a quaternary ammonium salt through successive SN2 reactions. This process of making the quaternary salt through the direct alkylation method is called exhaustive alkylation.
Each alkylation step makes the nitrogen center more nucleophilic, which triggers successive alkylations until a quaternary ammonium salt is formed. Considering...

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Related Experiment Video

Updated: Jun 28, 2026

An Efficient and Rapid HPLC-QQQ-MS Method for the Quantitation of Tropane Alkaloids in Medicinal Plants
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An Efficient and Rapid HPLC-QQQ-MS Method for the Quantitation of Tropane Alkaloids in Medicinal Plants

Published on: June 12, 2026

Quantitative determination of hydroxylamine.

T Kolasa1, W Wardencki

  • 1Faculty of Chemistry, Technical University of Gdańsk, Gdańsk, Poland.

Talanta
|August 1, 1974
PubMed
Summary
This summary is machine-generated.

This review surveys 66 studies on quantitative methods for determining hydroxylamine and its salts. It compares and evaluates volumetric, electrochemical, and spectrophotometric techniques for accuracy and application.

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Area of Science:

  • Analytical Chemistry
  • Inorganic Chemistry

Background:

  • Hydroxylamine and its salts are important industrial chemicals.
  • Accurate determination of hydroxylamine is crucial for quality control and safety.

Purpose of the Study:

  • To provide a comprehensive review of quantitative methods for hydroxylamine determination.
  • To compare and evaluate the most widely used analytical techniques.

Main Methods:

  • Literature survey of 66 studies.
  • Analysis of volumetric methods.
  • Analysis of electrochemical methods.
  • Analysis of spectrophotometric methods.

Main Results:

  • Identified and discussed common quantitative methods.
  • Compared the advantages and disadvantages of each method.
  • Evaluated the applicability and limitations of different techniques.

Conclusions:

  • Volumetric, electrochemical, and spectrophotometric methods are suitable for hydroxylamine determination.
  • The choice of method depends on specific analytical requirements.
  • Further research may refine existing methods or introduce novel approaches.