disodium [4-hydroxy-3-[(2-hydroxy-4-nitrophenyl)azo]naphthalene-1-sulphonato(3-)][1-[(2-hydroxy-4-nitrophenyl)azo]-2-naphtholato(2-)]chromate(2-) - Names and Identifiers
disodium [4-hydroxy-3-[(2-hydroxy-4-nitrophenyl)azo]naphthalene-1-sulphonato(3-)][1-[(2-hydroxy-4-nitrophenyl)azo]-2-naphtholato(2-)]chromate(2-) - Physico-chemical Properties
disodium [4-hydroxy-3-[(2-hydroxy-4-nitrophenyl)azo]naphthalene-1-sulphonato(3-)][1-[(2-hydroxy-4-nitrophenyl)azo]-2-naphtholato(2-)]chromate(2-) - Introduction
Diodium [4-hydroxy-3-[(2-hydroxy-4-nitrophenyl)azo]naphthalene-1-sulphonato(3-)][1-[(2-hydroxy-4-nitrophenyl)azo]-2-naptholato (2-)] Chrome (2-), often referred to simply as sodium dichromate.
Nature:
Sodium dichromate is an orange-red solid with good solubility in water. It is an organometallic complex containing chromium ions. Its chemical formula is Na2[Cr(III)(O2NN4-(C10H6OH-4-OH)C6H4N2-2-O)SO3]· Na[Cr(III)(O2NN4-(C10H6OH-4-NO2)C6H4N2-2-O)](Where SO3 is sulfonate), its molecular structure has a complex ligand environment.
Use:
Sodium dichromate is mainly used for Complexometric titration in the field of organic analysis. It can be used as an indicator to determine heavy metal ions in organic matter, such as copper, palladium, iron, etc. The presence and concentration of metal ions in the solution can be judged by the change of the color of the indicator. In addition, it can also be used in the preparation of dyes and pigments.
Preparation Method:
The method of preparing sodium dichromate is relatively complex and is generally obtained by reacting dichromic acid with an organic solution containing a suitable ligand. The specific preparation method will vary depending on the conditions and requirements of the chemical laboratory.
Safety Information:
Sodium dichromate has certain toxicity, so safety should be paid attention to during operation. Avoid inhaling dust and avoid contact with skin and eyes. When using, it is best to wear protective glasses and gloves, and ensure good ventilation. If contact with skin or eyes occurs, rinse immediately with plenty of water and seek medical help. Appropriate laboratory safety practices must be followed when handling this compound.
Last Update:2024-04-10 22:29:15