Vat Brown 3GR - Names and Identifiers
Vat Brown 3GR - Physico-chemical Properties
| Molecular Formula | C28H13ClN2O4
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| Physical and Chemical Properties | Dark brown powder. Insoluble in water, slightly soluble in xylene. It is gray-black in concentrated sulfuric acid and yellow-brown after dilution. It is light brown in concentrated nitric acid and light yellow brown after dilution. It is reddish brown in alkaline solution of hydrosulfite. |
Vat Brown 3GR - Introduction
Shilin Brown 3GR, also known as Tan GR or 3-hydroxy-4-nitrobenzene sulfonate, is a commonly used organic synthesis reagent.
Nature:
Shilin Brown 3GR is a tan crystal powder with good water solubility. It may present a yellow-brown solution in water. Under acidic conditions, its color changes.
Use:
Shilin Brown 3GR has color rendering and is often used as an indicator in chemical analysis. It can be used to detect the presence and concentration of metal ions, such as iron ions, cobalt ions, and nickel ions. In addition, Shilin Brown 3GR is also commonly used in dyeing and pigment preparation.
Preparation Method:
The preparation method of Shilin Brown 3GR is generally obtained by the reaction of p-nitrophenol and benzene sulfonic acid. First, under appropriate reaction conditions, P-nitrophenol reacts with benzenesulfonic acid to generate Thelin Brown 3. Then, the THRIN Brown 3 is reacted with a base to obtain THRIN Brown 3GR.
Safety Information:
Shilin Brown 3GR belongs to a class of relatively safe compounds, but still need to pay attention to protective measures. Avoid contact with skin and eyes, such as accidental contact, should immediately rinse with plenty of water. During use, maintain well-ventilated laboratory conditions and follow laboratory safety guidelines.
Last Update：2024-04-09 21:01:54