Acid Milling Yellow R,Vicoacid Yellow 42,Weak Acid Yellow C-R,Weak Acid Yellow R,Weak Acid Yellow MR,Acid Yellow N-CRS,Acid Yellow R,Acid Yellow MR,Aminyl Yellow F-MR,Apollo Nylon Fast Yellow M-R,Doracid Yellow R,Durapel Yellow R,Evron Yellow R,Dycroacid Milling Yellow MG,Dycroacid Yellow FG,Orco Milling Yellow RS,Rybacid Yelow 2R,Sandolan Milling Yellow N-SH,Selmacid Yellow N-2R,Suminol Milling Yellow MR
| Standard | Fiber | Soaping | Persperation Fastness | Oxygen bleaching | Light Fastness | |
| Fading | Stain | |||||
| AATCC | Wool | 4-5 | 4-5 | 4-5 | 1 | 4 |
| ISO | Wool | 4-5 | 5 | 4-5 | 4 | 4-5 |
Acid Yellow 42 shows highest affinity for protein fibers (wool, silk) and polyamide (nylon) because its anionic sulfonate groups bind electrostatically to cationic sites on these fibers under acidic conditions. This makes it ideal for apparel wool & silk dyeing and nylon hosiery or technical nylon parts. For confirmation of fiber compatibility, check small lab trials at production liquor ratios.
Yes — Acid Yellow 42 mixes well with other acid dyes to produce varied yellows and greens. For reproducible mixes, create master recipes (grams per kg fiber at a fixed % owf), perform stepwise dosing in lab dyebaths, and adjust pH/temperature ramp to avoid differential exhaustion. Avoid mixing with dyes that require drastically different pH or fixative chemistry without re-testing.
Acid Yellow 42 can be removed efficiently by adsorption onto clays/bentonite or by coagulation/advanced oxidation depending on plant setup. Precipitation/coagulation followed by adsorption and biological treatment is common; consult your effluent specialist and SDS for safe handling and local discharge limits before selecting a treatment train.
