He Dyes are Reactive Dyes for Cellulosic material and designed to give high fixation by exhaust dyeing method when applied at the temperature 75ºC-95ºC.

METHOD OF DYEING: By Exhaust Dyeing:

Take well prescoured fabric and ensure that the pH of the fabric is 7, if require adjust pH by adding Acetic Acid. Take soft water for dyeing, if the water is hard, add sequestering agent to achieve best result.

Set the dye bath at 50ºC and add predissolve dye in two portion and run for 10 min.

Add 5 gms./lit. common salt for deep shade (2.5 gms./lit. for pale shade) and run for 10 min. start raising temperature to 80ºC - 85ºC in 30 min.

During raising temperature, 20 gms./lit. common salt (10 gms./lit. for pale shade) after first 10 min. and add 25 gms./lit. common salt (8 - 10 gms./lit. for pale shade) after another 10 min. and continue dye for 15 min. after reaching the temperature to 80ºC - 85ºC.

Add Alkali slowly in 15 min. and continue dyeing for further 45 - 75 min.

SALT AND ALKALI REQUIREMENTS FOR REACTIVE HE DYES

Depth of Shade (% on wt. of goods)	Salt (g/l)	Soda Ash (g/l)
upto 0.5	30	10
0.51 to 1.0	45	15
1.01 to 2.0	60	15
2.01 to 4.0	70	20
Above 4.0	90	20

PRODUCT Reactive HE Dyes	FASTNESS TO
	Light	Solubility at 30º C	Washing	Hypochlorite Bleaching	Perspiration	Dischargebility
YELLOW HE6G *Yellow 135	4-5	45	4	1	4	-
YELLOW HE4G *Yellow 81	5-6	200	5	2	4	-
ORANGE HER *Orange 84	3-4	80	5	3	3	-
ORANGE HE2R *Orange 94		50	5	3	3	-
RED HE3B *Red 120	5	140	5	1	5	-
RED HE7B *Red 141	4-5	80	5	4	4	-
RED HE8B *Red 152	4-5	160	3	4	4	-
GREEN HE4B *Green 19/A		130	4-5	1	4	-
GREEN HE4BD *Green 44		120	5	1	4-5	-
NAVY BLUE HER *Blue 171	4	125	5	3	5	-
NAVY BLUE HE2R *Blue 172	4	140	4-5	3	5	-
BLACK HEBL *Black 160		200	4-5	4	4	-
RED HE3B *Red 120	5	-	5	1	4-5	P
RED HE7B *Red 141	4-5	-	5	3	5	P
RED HE8B *Red 152	4-5	-	5	3-4	5	P
BLACK HEBL	4	-	5	3	4	P
NAVY BLUE HER *Blue 171	4	-	5	1-2	4	F
NAVY BLUE HE2R *Blue 172	4	-	4-5	2	4	F
BLUE HERD *Blue 160	6	-	5	3	4	F