N,N-Diethyl-p-phenylenediamine sulfate

• CAS: 6283-63-2
• Catalog Number: ACM6283632
• Category: Main Products
• Molecular Weight: 262.33
• Molecular Formula: C10H18N2O4S
• Synonyms: N.N-Diethyl-p-;p-Amino-N,N-diethylaniline sulfate salt
• Melting Point: 184-186 °C
• Appearance: White solid

Case Study

High-Performance Spectrophotometric Detection of Cr(VI) in Water Using N,N-Diethyl-p-phenylenediamine Sulfate

Li, Tao, et al. Journal of environmental chemical engineering 9.5 (2021): 105517.

N,N-diethyl-p-phenylenediamine sulfate (DPD) is a widely known sensitive reagent for colorimetric reactions. This work showed its application for accurate, rapid, and interference-free determination of hexavalent chromium [Cr(VI)] in water. DPD was used to develop a method for Cr(VI) detection, as a more convenient alternative to existing ones with numerous disadvantages and restrictions (pH dependence, interference from metal ions, complex reaction setup, long development time).
Methodology
DPD offers a robust alternative by forming a stable pink-colored radical (DPD·+) upon oxidation by Cr(VI). The DPD-based method involves the reaction between DPD and Cr(VI), producing DPD·+ radicals measurable at 551 nm. Key reaction parameters-including coloration time, DPD concentration, pH, buffer selection, temperature, and potential interferents-were systematically optimized. This property enables highly sensitive and selective quantification of Cr(VI), even in complex water matrices.
Key Results:
· The linear range is 0.85-60 µM and the sensitivity is (3.05 ± 0.02) × 10⁴ M^-1cm^-1. The limits of detection (LOD) and quantification (LOQ) were calculated to be 0.26 µM and 0.85 µM, respectively. The stoichiometric ratio was close to 1:3 (1:2.78).
· Application Success: Cr(VI) was successfully detected in natural waters and in systems with reducing agents (sulfite, hydroxylamine, etc.).

Highly Sensitive Detection of Trace Permanganate in Water Using N,N-Diethyl-p-Phenylenediamine Sulfate

Liu, Xin, et al. Chemosphere 212 (2018): 604-610.

N,N-Diethyl-p-phenylenediamine sulfate (DPD) is widely recognized as a reliable and sensitive colorimetric reagent for oxidizing agents in water analysis. This study demonstrated its application in the accurate and efficient spectrophotometric determination of trace permanganate (MnO₄^-) in various water matrices by leveraging the rapid and specific oxidative coloration reaction between permanganate and DPD.
Methodology
The DPD method is based on the oxidation of DPD by permanganate in a 50 mM phosphate buffer (pH 6.0), producing DPD·+ which is quantitatively measured at 551 nm using a UV-Vis spectrophotometer. The method was validated across a permanganate concentration range of 0-10 μM.
Key Results
· The developed DPD method had a molar absorptivity of 5.70 × 10⁴ cm^-1 M^-1 and a linear calibration range (R² = 0.999) over the concentration range studied. Detection limits were remarkably low-0.010 μM in ultrapure water and 0.017 μM in natural waters-with a consistent stoichiometry of approximately 1:2.71 (MnO₄^-:DPD) between pH 4.0-8.0. The DPD·+ signal remained stable for over 30 minutes, facilitating reliable measurement.
· The method was successfully applied to detect permanganate at levels as low as 0.04-0.10 μM in real water samples and was further utilized to determine reaction kinetics with phenol.

Custom Q&A

What is the molecular formula of N,N-Diethyl-p-phenylenediamine sulfate?

The molecular formula of N,N-Diethyl-p-phenylenediamine sulfate is C10H18N2O4S.

What is the molecular weight of N,N-Diethyl-p-phenylenediamine sulfate?

The molecular weight of N,N-Diethyl-p-phenylenediamine sulfate is 262.33 g/mol.

What is the IUPAC name of N,N-Diethyl-p-phenylenediamine sulfate?

The IUPAC name of N,N-Diethyl-p-phenylenediamine sulfate is 4-N,4-N-diethylbenzene-1,4-diamine;sulfuric acid.

What is the InChI of N,N-Diethyl-p-phenylenediamine sulfate?

The InChI of N,N-Diethyl-p-phenylenediamine sulfate is InChI=1S/C10H16N2.H2O4S/c1-3-12(4-2)10-7-5-9(11)6-8-10;1-5(2,3)4/h5-8H,3-4,11H2,1-2H3;(H2,1,2,3,4).

What is the InChIKey of N,N-Diethyl-p-phenylenediamine sulfate?

The InChIKey of N,N-Diethyl-p-phenylenediamine sulfate is AYLDJQABCMPYEN-UHFFFAOYSA-N.

What is the canonical SMILES of N,N-Diethyl-p-phenylenediamine sulfate?

The canonical SMILES of N,N-Diethyl-p-phenylenediamine sulfate is CCN(CC)C1=CC=C(C=C1)N.OS(=O)(=O)O.

What is the CAS number of N,N-Diethyl-p-phenylenediamine sulfate?

The CAS number of N,N-Diethyl-p-phenylenediamine sulfate is 6283-63-2.

How many hydrogen bond donor count does N,N-Diethyl-p-phenylenediamine sulfate have?

N,N-Diethyl-p-phenylenediamine sulfate has 3 hydrogen bond donor count.

How many hydrogen bond acceptor count does N,N-Diethyl-p-phenylenediamine sulfate have?

N,N-Diethyl-p-phenylenediamine sulfate has 6 hydrogen bond acceptor count.

How many rotatable bond count does N,N-Diethyl-p-phenylenediamine sulfate have?

N,N-Diethyl-p-phenylenediamine sulfate has 3 rotatable bond count.