Strong acid bath · full shades
Acid range
Yellow to black across Brill. Yellow 2G, Scarlet B, Violet 4BNS and Nigrosine. Levels well under a strong acid bath, dyeing depth up to 4.0% owf on the blacks.
Dragonacid · Nylon · United States
Acid dye for nylon, indexed by C.I. Acid number.
Acid dye for nylon from Dragonacid, weak acid and acid ranges for polyamide yarn and fabric, with fastness data per shade.
Samples and data sheets come straight from the team that makes the product.
90+ shadesyellow to black on wool
2 acid strengthsacid · weak acid
ISO 9001 · 14001certified group
30+ countriesserved since 1992
Product brochure
Two acid strengths, one wool shade card.
The Dragonacid brochure lists every shade at 100 to 400% strength on wool, with C.I. Acid number where it applies, dyeing depth in % owf, fastness to light (xenon), washing at 40°C, perspiration and hot pressing.
Mild bath · steadier wet fastness
Weak acid range
A parallel yellow-to-black card, from Yellow TB to Black NB-G, dyed closer to neutral pH. Trades some levelling power for steadier wet fastness, most washing figures 4 to 5.
Buying it right
Acid dye for nylon matched to the end use.
Nylon hosiery, yarn and carpet fiber all take acid dyes, but each end use stresses a different fastness. Choosing an acid dye for nylon by shade alone leads to returns.
Dragonacid lets you pick the range first. Either range dyes nylon, and the brochure shows which one trades leveling for wet fastness, so the choice follows the article.
Shades are indexed by C.I. Acid number. A plant that already buys by C.I. number can map its recipe to Dragonacid line by line.
The partnership
What a Hongda partnership gives you.
Supply
You buy at origin, in the quantities a distributor needs to stay competitive in its market. Volume pricing, consolidated shipments and production planned around your forecast give you the economics to defend margin against any local reseller.
Support
Samples, datasheets and technical answers come straight from the team that makes the product. Formulation advice, matching against your current reference and follow-up after delivery are part of the partnership, included from the first order.
Experience
Documentation, logistics and compliance are routine here after three decades of cross-border trade. Hongda exports to more than 30 countries and works with over 500 distributors worldwide, so the paperwork your market requires has most likely been solved here before.
Product
Seven registered brands, from Dragon Dyes to Chemtech, all backed by Hongda's in-house R&D teams. Dyes, pigments, additives and functional chemicals come from the same group, so you can widen your catalogue while keeping a single supplier.
Questions
What buyers ask before the first order.
01Which Dragonacid range should I use for nylon?
Either one dyes nylon. Pick the weak acid range when washing fastness leads, the acid range when leveling leads.
02Can acid dye for nylon also dye wool in a blend?
Yes. The same Dragonacid shades dye wool and silk, which helps on nylon and wool blends.
03What fastness tests are listed for each shade?
Light (xenon), washing at 40°C, perspiration and hot pressing.
04How do I convert my nylon recipe to Dragonacid?
Send the C.I. Acid numbers you use. The textile team maps each one to the Dragonacid shade and depth.
Where it ships from
Made in Ningbo, shipped to the United States.
Hongda ships from Ningbo, China, to distributors in more than 30 countries, North America included. Samples, data sheets and documents for each order come from the team in Ningbo.
- Office
- 11th Floor, Office Park Building, 535 Qingshuiqiao Road, Ningbo Hi-Tech Park, Ningbo, Zhejiang Province 315040, China
- Plant
- 365 Beihai Road, Ningbo Petrochemical Economic and Technological Development Zone, Ningbo, Zhejiang Province, China
Strategic partners
Ready to represent Hongda in your market?
Write directly to the partner team, or send the short application. It reaches Hongda's partner team by email.
Textile Chemistry
Pigments & Colorants
Performance Additives
Functional Chemicals
info@hongda-chem.comOr call the group directly: +86 574 87907888