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 · Wool Dyeing · United States
Acid dyes for wool, from bright yellows to deep blacks.
Dragonacid acid dyes for wool in two ranges, acid and weak acid, more than 90 shades on wool, each with its C.I. Acid number and fastness data.
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 dyes for wool that level and still hold in the wash.
Wool mills ask two things of acid dyes for wool: an even shade across the lot and wet fastness that survives the customer's washing machine. Few dye classes deliver both.
Dragonacid splits the job. The acid range levels well in a strong acid bath, while the weak acid range dyes closer to neutral and holds washing fastness mostly at 4 to 5.
Both ranges run from yellow to black, Nigrosine and Black NB-G included, with dyeing depth in % owf for every shade. A distributor can stock the two cards and cover sweaters, carpets and yarn.
The partnership
What a Hongda partnership gives you.
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.
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.
Questions
What buyers ask before the first order.
01Which acid dyes for wool give the best wash fastness?
Within Dragonacid, the weak acid range: most of its washing figures sit at 4 to 5. For the top of the scale on wool, Hongda also sells Dragonneutral and Dragonmordant dyes.
02What blacks are available for wool?
Nigrosine in the acid range and Black NB-G in the weak acid range, with dyeing depth up to 4.0% owf on the acid range blacks.
03Are Dragonacid dyes suited to wool carpets?
Wool sweaters and carpets are the main end uses listed for the range. Choose acid or weak acid by the fastness target and the bath your plant runs.
04How are acid dyes for wool shipped to the United States?
In container loads from Ningbo, with the export documents Hongda has handled for more than 30 countries.
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