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Orange II sodium salt CAS:633-96-5 yellow powder

Short Description:

Catalog Number: XD90466
CAS: 633-96-5
Molecular Formula: C16H11N2NaO4S
Molecular Weight: 350.324
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Product Detail

Product Tags

Catalog Number XD90466
Product Name Orange II sodium salt
CAS 633-96-5
Molecular Formula C16H11N2NaO4S
Molecular Weight 350.324
Storage Details 2 to 8 °C
Harmonized Tariff Code 3204120000

 

Product Specification

Melting Point 164 °C
Appearance yellow powder
Assay 99%

 

The effect of Cl(-) on the oxidative degradation of Acid Orange 7 (AO7) was investigated in UV/S2O8(2-) system to elucidate the chlorination pathways in saline wastewaters. Lower amount of Cl(-) as well as Br(-) enhanced the decoloration of AO7, but such promotion effect reduced gradually with the increasing halide ion dosage. The dye mineralization was found to be inhibited by Cl(-), especially under acidic conditions. Results of kinetics modeling demonstrated that the fraction of different oxidizing radicals largely depended on the content of Cl(-). At the initial pH of 6.5, Cl2(-) was much more abundant than SO4(-). The significance of Cl2(-) for AO7 degradation increased with the increasing Cl(-) concentration and overwhelmed that of SO4(-) at [Cl(-)]>1mM. Without Cl(-), SO4(-) was the predominant radical for AO7 degradation under acidic conditions, while OH prevailed gradually at higher pH. Under high salinity conditions, more OH can be formed and contributed to the dye degradatio n especially in alkaline medium, leading to higher destruction efficiency of AO7. Several chlorinated byproducts were detected in the presence of chloride ions, and SO4(-)/Cl2(-)-based degradation pathways of AO7 were proposed. This work provides further understanding of the complex reaction mechanisms for SO4(-)-based advanced oxidation processes in chloride-rich environments.


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    Orange II sodium salt CAS:633-96-5 yellow powder