About Viana Chemicals - Acid Dyes Supplier in India

India, Ahmedabad (Gujarat) hosts Viana Chemicals, which lists 29 active products in its catalogue. The portfolio is centred on synthetic acid dyes used for digital textile printing inks and pigments, all classified under HS chapter 32 heading 3204.12. Specific items include ACID BLACK 84 (an azo‑based powder), a series of ACID BLACK 172, 194, 210 and 234, multiple ACID BROWN shades (e.g., 75, 97, 98, 165), and a range of acid yellows, oranges, reds, blues and greens such as Acid Yellow 23, Acid Orange 61 and Acid Green 68. Each product is presented as a powder form, which is the common industrial grade for bulk dye shipments. The catalogue also mentions a few products without HS codes, indicating they belong to the same acid‑dye family but lack detailed customs data in the source. Viana Chemicals therefore positions itself as an exporter of a broad spectrum of acid colourants covering dark, medium and bright shades, suitable for wool, silk, nylon, cotton, rayon and viscose substrates. The company’s stated focus on acid dyes aligns with the HS‑code 3204.12 grouping that covers synthetic organic dyes and pigments.

Product Range and Specialties of Viana Chemicals

The listed acid dyes fall into typical industry grades defined by colour index (C.I.) numbers, purity levels above 95 %, and standardised shade indices used by textile manufacturers. Powder acid dyes are normally supplied in 25 kg fiber drums or bulk 1 ton bags, with particle size distribution controlled to ensure consistent dispersion. Buyers commonly request specifications such as wash fastness (ISO 105‑C06 ≥ 4), light fastness (ISO 105‑B02 ≥ 4), and pH stability for digital printing inks. In the broader market, acid dyes are also produced in liquid concentrate form for high‑speed printing, but Viana’s catalogue focuses on the powder grade, which is preferred for batch dyeing and pigment formulation. Industry standards for acid dyes include compliance with ISO 9001 quality management, ISO 14001 environmental management, and REACH registration for chemicals sold in the EU. Typical certifications sought by importers are Oeko‑Tex Standard 100 for textile safety and the International Dye Association’s (IDA) guidelines on colourant safety. These benchmarks help buyers assess colour consistency, impurity limits (e.g., heavy‑metal content < 10 ppm), and overall product reliability.

Trade and Export Information - Viana Chemicals

India ranks among the top global exporters of synthetic organic dyes, with HS code 3204.12 accounting for a substantial share of the country’s chemical export volume. Export destinations for Indian acid dyes commonly include the European Union, United States, Turkey, Bangladesh and Vietnam, where the textile and apparel sectors demand high‑performance colourants. Buyers typically require full customs documentation: commercial invoice, packing list, certificate of origin, and a safety data sheet (SDS) that meets the Globally Harmonised System (GHS). Standard packaging for powder acid dyes is 25 kg fiber drums placed in 20 ft containers, allowing roughly 20‑22 drums per container, or 40 ft containers for larger volumes. Regulatory expectations for acid dyes involve REACH registration for the EU market, and compliance with the US Toxic Substances Control Act (TSCA) for North America. Importers often request ISO 9001 certification to verify the supplier’s quality management system, and may ask for independent laboratory test reports confirming colour index, impurity profile and fastness ratings. Common Incoterms used in the trade of these dyes are FOB Ahmedabad or CIF major European ports, reflecting the bulk nature of the shipments and the need for controlled logistics handling.

Sourcing from Viana Chemicals - Buyer Guidance

When sourcing acid dyes from Viana Chemicals, buyers should request the latest SDS, a certificate of analysis (CoA) for each shade, and REACH registration documentation if the shipment is destined for the EU. Sample orders of 250 g to 1 kg are standard practice to verify colour matching and fastness performance before committing to bulk purchases. Verify that the powder meets the typical purity threshold of ≥ 95 % and that heavy‑metal limits comply with ISO 17025 laboratory testing results. Typical minimum order quantities (MOQ) for powder acid dyes range from 500 kg to 1 ton per colour, with lead times of 30‑45 days after order confirmation, depending on production scheduling and customs clearance. Buyers should also confirm packaging details (25 kg fiber drums, inner liners, moisture barrier) and request a pre‑shipment inspection report from an accredited third‑party agency to ensure compliance with the agreed specifications.

What HS code is used for the acid dyes listed by Viana Chemicals?

All listed acid dyes fall under HS heading 3204.12, which covers synthetic organic dyes, pigments and natural organic dyes.

Which forms of acid dye does Viana Chemicals supply?

The catalogue specifies powder form for each shade, which is the standard bulk grade for textile dyeing and pigment applications.

What certifications should a buyer request before purchasing?

Buyers should request the supplier’s ISO 9001 quality‑management certificate, REACH registration (for EU shipments), and a recent safety data sheet (SDS) for each colour.

What are the typical packaging and container sizes for these dyes?

Powder acid dyes are typically packed in 25 kg fiber drums; a 20 ft container can hold about 20‑22 drums, while a 40 ft container accommodates roughly 40‑44 drums.

What sample size is appropriate for colour matching?

A sample of 250 g to 1 kg per shade is commonly used for lab colour matching and fastness testing before full‑scale orders.

What are the usual minimum order quantities and lead times?

MOQ generally ranges from 500 kg to 1 ton per colour, with lead times of 30‑45 days after order confirmation, subject to production scheduling.

Which fastness tests are relevant for acid dyes?

Importers typically require wash fastness (ISO 105‑C06 ≥ 4) and light fastness (ISO 105‑B02 ≥ 4) test results as part of the CoA.

Which Incoterms are commonly used for shipping these dyes?

FOB Ahmedabad and CIF to major European ports are the most frequently used Incoterms for bulk acid‑dye shipments.