Skip to main content

Table 1 Chemical sample data for the chemical compounds used

From: Physico-analytical studies on some heterocyclic azo dyes and their metal complexes with some transition metals

Compound

Reg. CAS Number

suppliers

%Purity

before purification

Purification method

%Purity

before purification

Co(NO3)2

7791-13-1

Merck Darmstadt

(99.0%)

The compounds were used without further purification

(99.0%)

Ni (NO3)2

7718-54-9

Merck Darmstadt

(98.0%)

(98.0%)

Cu (NO3)2

744-39-4

Merck Darmstadt

(97.8%)

(97.8%)

Zn(NO3)2

7646-85-7

Merck Darmstadt

(97.0%)

(97.0%)

Methanol

64-17-6

Sigma Aldrich

(97.8%)

(97.8%)

Ethanol

64-17-5

(97.8%)

(97.8%)

Isopropanol

178-18-7

(97.9%)

(97.9%)

DMSO

232-11-1

(≥ 97.8%)

(≥ 97.8%)

DMF

211-12-7

(98.7%)

(98.7%)

CHCl3

89-15-3

(98.2%)

(98.2%)

Acetone

77-22-6

(97.9%)

(97.9%)