My watch list

Copper benzoate

Copper benzoate


IUPAC name	copper dibenzoate
Identifiers
CAS number	533-01-7
PubChem	164650
SMILES	C1=CC=C(C=C1)C(=O)[O-].C1=CC =C(C=C1)C(=O)[O-].[Cu+2]
InChI	InChI=1/2C7H6O2.Cu/c28-7(9)6-4-2-1 -3-5-6;/h21-5H,(H,8,9);/q;;+2/p-2/f2 C7H5O2.Cu/q2*-1;m
Properties
Molecular formula	C₁₄H₁₀CuO₄
Molar mass	305.7728 g/mol
Appearance	blue solid
Related Compounds
Other cations	sodium benzoate
Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa) Infobox disclaimer and references

Copper benzoate is the chemical compound with the formula Cu(C₆H₅CO₂)₂. This coordination complex derived from the cupric ion and the conjugate base of benzoic acid. Because copper emits blue when heated in a flame, this salt has found some use as a source of blue light in fireworks.^[1]

Additional recommended knowledge

Correct Test Weight Handling Guide: 12 Practical Tips

How to ensure accurate weighing results every day?

Daily Visual Balance Check

Preparation

Preparation is easily done by mixing aqueous solutions of sodium benzoate or potassium benzoate and copper sulfate. Solid copper benzoate forms as a bluish-green precipitate and can be collected by filtration. The equations for these reactions are: