Dynachrome is Mordant Dyes with good levelling, outstanding fastness to light and washing.
Yellow-brown powder. The solubility in water is 100 g/l (80°C), soluble in water and ethanol, yellow-brown, soluble in Cellosolve, slightly soluble in acetone, insoluble in other organic solvents. Mainly used for the dyeing of wool fabrics, especially for the dyeing of carpets, wool and tops, and also for the dyeing of silk, nylon and leather. It can also be used for blended bath dyeing of wool and various fibers. It can also be used as a chrome acetate pretreatment for direct printing on wool and silk fabrics.
| Dynachrome | C.I. Mordant | CAS No. | Characteristics | |
| Brown RH | Brown 33 | 3618-62-0 | Yellowish Brown |
Properties and Applications:
yellow brown. Yellow brown powder. In the water solubility for 100 g/l (80 ℃), soluble in water and ethanol for yellow brown, and soluble in Cellosolve, slightly soluble in Acetone, insoluble in other organic solvent. Dye in concentrated sulfuric acid to red to red light brown, dilution have orange precipitation; In concentrated nitric acid for red solution, and then to yellow brown. Its aqueous solution for yellow light brown, add concentrated hydrochloric acid to brown light orange, Add sodium hydroxide solution to orange. Dyeing encounter copper ion color darker, iron ion is yellow. Mainly used for wool fabric dyeing, especially suitable for carpet, wool and wool top dyeing, also used for silk, nylon and leather dyeing. Also can be used for wool and a variety of fibre blended with bath dyeing. Can also be used for acetic acid chromium pretreatment of wool and silk fabric direct printing.
| Standard | Ironing Fastness | Light Fastness | Fulling | Persperation Fastness | Soaping | Water |
| Alkali | Acid |
| ISO | 4 | 5 | 4 | 1-2 | 4-5 | 4-5 | 5 |
| AATCC | 5 | 6 | 4-5 | | 5 | 4-5 | 5 |
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