Extraction and Optimization of Natural Dye from Hambo Hambo (Cassia singueana) Plant Used for Coloration of Tanned Leather Materials

Table 1

Different parameters combinations used to dye leather.

Sample number	pH	Temperature (°C)	Time
1	5.5	25	20
2	5	40	30
3	4.5	55	45
4	4	70	60