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Direct Blue 71 is a synthetic direct dye with the CAS number 4399-55-7 and molecular formula C40H23N7Na4O13S4. It appears as a fine powder and is classified under EINECS 224-531-4. This dye is specifically formulated for applications requiring strong affinity to cellulosic substrates and protein-based materials, such as leather, paper, and textile fibers. Its solubility in water enables consistent application in aqueous dye baths without requiring additional mordants.
The dye belongs to the anthraquinone class of direct dyes and exhibits moderate lightfastness and good washfastness on wool and paper. Typical industry standards for this compound include a moisture content below 5% and a purity level of at least 90% by HPLC. Grain size is generally under 100 microns to ensure even dispersion. While Sparrowings International does not specify its own batch tolerances, standard commercial grades in the Indian dye market typically maintain a pH range of 6.5 to 8.0 in solution.
Buyers in the leather finishing, specialty paper printing, and medium-grade textile dyeing sectors commonly source this material. It is typically packed in 25 kg multi-wall paper bags with inner polyethylene lining. Trade terms are usually FOB Ahmedabad Port, with minimum order quantities often starting at 100 kg. Buyers should confirm compatibility with their existing dyeing processes and verify batch consistency through lab testing before bulk procurement.
| CAS Number | 4399-55-7 |
| Molecular Formula | C40H23N7Na4O13S4 |
| EINECS Number | 224-531-4 |
| Appearance | Powder |
| Solubility | Water-soluble |
| Typical Moisture Content | Below 5% |
| Typical Purity | 90% minimum by HPLC |
| Typical Particle Size | Under 100 microns |
| Typical pH Range in Solution | 6.5 to 8.0 |
| Primary Applications | Leather, paper, textile dyeing |
Sparrowings International operates from Ahmedabad, Gujarat, and is registered as a supplier of direct dyes for industrial applications. The company is listed with a harbor trust tier, indicating basic verification of legal registration and physical address. There is no public information on production capacity, years in operation, or client list. The listing confirms no response activity, suggesting the company may operate as a trading entity rather than a manufacturer.
The supplier does not claim certifications such as ISO, REACH, or OEKO-TEX. No laboratory test reports or batch-specific data sheets are referenced in the listing. Buyers should treat this as a sourcing point for raw material, not a certified producer. All technical claims must be validated through independent sample testing before large-scale orders.
| Business Type | Supplier |
| Year Established | Recently Joined |
| Employees | Contact Supplier |
| Annual Revenue | Contact Supplier |
| Main Products | View Products Tab |
| Major Markets | Global |
| Response Time | <4h |
| Response Rate | New Supplier |
Before ordering Direct Blue 71 from Sparrowings International, verify the exact CAS and EINECS numbers match your requirements. Request a sample batch and test its solubility, color strength, and washfastness against your standard substrates. Confirm the moisture content and particle size distribution with lab reports, as these directly affect dyeing performance. Do not rely on supplier claims without independent verification.
Logistics for this product are typically handled via FOB Ahmedabad Port. Lead time is often 15 to 25 days after order confirmation, but this is unconfirmed by the supplier. Payment terms are commonly T/T in advance or LC at sight. Buyers should clarify Incoterms, container type (20ft or 40ft), and insurance coverage. Confirm that packaging meets your storage and handling conditions, especially in humid climates.
Quality checks should include spectrophotometric analysis of dye strength, moisture content via Karl Fischer, and particle size distribution by sieve analysis. Request a certificate of analysis for each batch. Ensure documentation includes the supplier’s batch number, production date, and test results. For import into the EU or US, verify compliance with REACH or TSCA regulations, even if not certified by the supplier.
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When sourcing Direct Blue 71 for your business, securing the right balance of quality and cost is essential. Sparrowings International, a verified supplier based in India, offers this product for international export. By purchasing directly from the manufacturer or authorized exporter, buyers can negotiate favorable FOB prices starting at $510/Bags and manage bulk orders with a minimum order quantity (MOQ) of 1 Bags. This product is a staple in the Products sector with strong demand from importing countries worldwide.
Importing Direct Blue 71 requires careful attention to shipping logistics, customs compliance, and secure payment terms. Sparrowings International offers flexible shipping options such as Full Container Load (FCL) or Less than Container Load (LCL) via sea freight. Common payment methods for international B2B transactions include Letter of Credit (L/C), Telegraphic Transfer (T/T), and Documents against Payment (D/P). All transactions and RFQs are facilitated through EximNext, a leading global B2B marketplace designed to make cross-border trade secure and efficient.
Finding trustworthy partners is the foundation of successful importing. The supplier of this Direct Blue 71 has been verified on our platform. Whether you are a distributor, wholesaler, or procurement manager, you can request a free quotation, ask for product samples, and finalize your bulk purchase with confidence. EximNext hosts thousands of verified manufacturers and exporters across 200+ countries. Explore similar products in the Products category and connect with top-tier exporters on our comprehensive import export marketplace. Start your sourcing journey today.
Importing Direct Blue 71 requires careful attention to shipping logistics, customs compliance, and secure payment terms. Common shipping options include Full Container Load (FCL) or Less than Container Load (LCL) via sea freight. Buyers should verify import duties in their destination country. Common payment methods include Letter of Credit (L/C), Telegraphic Transfer (T/T), and Documents against Payment (D/P).
The current listed wholesale price for Direct Blue 71 from Sparrowings International is $510/Bags on FOB terms from India. Prices may vary depending on order volume, packaging, and destination. For the most accurate bulk quote, send a direct RFQ to Sparrowings International through EximNext.
The supplier, Sparrowings International, has set a Minimum Order Quantity (MOQ) of 1 Bags for Direct Blue 71. For sample requests or smaller trial orders, contact the supplier directly through our platform's inquiry system.
The HS Code classification for Direct Blue 71 depends on the specific grade and form. Contact Sparrowings International through EximNext for the exact HS Code and customs documentation required for your destination country.
To import Direct Blue 71 from India, negotiate shipping terms (FOB, CIF, or EXW) directly with Sparrowings International. Ensure you have the necessary import licenses for Products products in your destination country.
Yes, Sparrowings International is a verified supplier on EximNext. You can view their complete company profile, business registration details, certifications, and export history before placing a bulk order.
For a complete technical data sheet or Certificate of Analysis (COA), send an inquiry directly to Sparrowings International through EximNext.
Sparrowings International offers Direct Blue 71 with standard export packaging. Custom packaging, private labeling, and OEM/ODM options may also be available for large wholesale orders.
Direct Blue 71 is actively imported by buyers worldwide. Request a destination-specific CIF or CFR quote from Sparrowings International through our platform.
Sparrowings International maintains international quality certifications. These ensure that the Direct Blue 71 meets international quality, safety, and regulatory standards required for cross-border trade.
Click "Request Quotation" on this product page, specify your required quantity, preferred shipping terms, and destination country. Sparrowings International will respond with a detailed wholesale quote including FOB pricing, lead time, and payment options.
Common payment methods include Letter of Credit (L/C), Telegraphic Transfer (T/T), Documents against Payment (D/P), and Escrow services. Confirm accepted terms directly with Sparrowings International.
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