Thorin
90%
Reagent
Code: #51537
Alias
Thorium reagent; 1-(2-Arsenoic acid phenylazo)-2-naphthol-3,6-disulfonic acid disodium salt, 2-(2-hydroxy-3,6-disulfonic acid-1-naphthyl Azo) Benzene Arsenic 2-[(2-Hydroxy-3,6-disulfo-1-naphthyl)azo]benzenearsonic Acid Disodium Salt Aspan Disodium 1-(2-Arsonophenylazo)-2-naphthol-3,6-disulfonate Thoron 1 -(2-Arsonophenylazo)-2-naphthol-3,6-disulfonic
CAS Number
3688-92-4
science Other reagents with same CAS 3688-92-4
blur_circular Chemical Specifications
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Molecular Information
Weight
576.3 g/mol
Formula
C₁₆H₁₁AsN₂Na₂O₁₀S₂
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Registry Numbers
EC Number
222-993-1
MDL Number
MFCD00003888
thermostat
Physical Properties
Melting Point
>300°C
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Storage & Handling
Storage
room temperature
description Product Description
Thorin is primarily used as an indicator in analytical chemistry, particularly in complexometric titrations. It is employed to detect the presence of metal ions, such as thorium, uranium, and zirconium, due to its ability to form colored complexes with these metals. In water analysis, Thorin is utilized to determine sulfate concentrations by forming a reddish-pink complex with barium ions. Additionally, it is applied in spectrophotometric methods for the quantitative analysis of various metal ions in environmental and industrial samples. Its sensitivity and specificity make it a valuable tool in laboratory settings for precise metal ion detection and measurement.
format_list_bulleted Product Specification
| Test Parameter | Specification |
|---|---|
| Loss on Drying | 20 |
| Purity (on the dry weight) | 90-110 |
| Appearance | red to red-brown powder |
| Infrared Spectrometry | authentic |
| Specific Ext. E (1 1cm) | 200 (485 nm, water) |
| Sensitiveness | Pass |
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