Table: 2.

Degrading behaviour of madder dye at different heat rate.

S. No	Heating rate (°C)	Weight loss (%)			Residue (%)
		Temperature (°C)
		30–100 °C	100–400 °C	400–800 °C
1	10	6.51	67.37	26.04 (725 °C)	0.08
2	20	3.48	56.57	31.37	8.58
3	30	7.53	55.49	28.33	8.65
4	40	4.45	48.15	46.95 (770 °C)	0.45
5	50	3.75	49.66	28.42	18.17