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Basic Brown 4, also known as Bismark Brown R, is a synthetic basic dye with the molecular formula C21H24N8 and a molecular weight of 388.47 g/mol. This brownish-black powder is soluble in water and organic solvents, making it suitable for a range of industrial dyeing processes. Shramik Chemicals supplies this product from its facility in Ankleshwar, Gujarat, where it is processed for consistent stability and colorfastness across substrates like textiles, leather, and paper.
The dye is valued for its versatility in application, including dyeing chemical fibres, silk, wool, and cotton, though its fastness is typically lower than that of basic green dyes. Industry standards for such dyes often include tests for solubility, pH stability, and lightfastness, with typical values for Basic Brown 4 falling within standard ranges for basic dyes. Its brown hue is achieved through the reaction of nitrous acid with 4-methyl-1,3-benzenediamine hydrochloride, a process that defines its chemical identity as C.I. Basic Brown 4.
Textile manufacturers use Basic Brown 4 for fabrics and yarns, while leather processors rely on it for deep, uniform colouring. Paper producers also employ it to enhance visual appeal in coated and uncoated stocks. Buyers sourcing from Shramik Chemicals should confirm packaging options, as bulk shipments often use 25 kg or 50 kg bags, with lead times and incoterms negotiable based on order volume. The product is compatible with standard dyeing equipment, but users should verify compatibility with their specific substrates and processes.
| Chemical Name | Bismark Brown R |
| C.I. Number | 21010 |
| CAS Number | 5421-66-9 |
| Molecular Formula | C21H24N8 |
| Molecular Weight | 388.47 g/mol |
| Appearance | Brownish Black Powder |
| Solubility | Highly soluble in water and organic solvents |
| Application Substrates | Textiles, leather, paper, silk, wool, cotton, chemical fibres |
| Typical Lightfastness | Standard for basic dyes (moderate to low) |
| Typical pH Stability Range | Standard for basic dyes (pH 4-9) |
| Packaging | Typical 25 kg or 50 kg bags |
Shramik Chemicals operates from Plot No. 6904 in the GIDC Industrial Estate, Ankleshwar, Gujarat, a hub for chemical manufacturing in India. The company’s address places it near the Gujarat Gas R&D Centre, indicating proximity to industrial infrastructure and logistics networks. As a supplier of basic dyes, Shramik Chemicals focuses on products like Basic Brown 4, catering to textile, leather, and paper industries.
The supplier’s profile does not state a response rate or average response time, and no verification signals such as certifications or trade history are provided in the listing. Buyers should directly contact Shramik Chemicals to confirm production capacity, quality control measures, and compliance with industry standards like ISO for dyes. The company’s location in Gujarat positions it well for exports, with access to major ports such as Mundra and Nhava Sheva.
| Business Type | Supplier |
| Year Established | Recently Joined |
| Employees | Contact Supplier |
| Annual Revenue | Contact Supplier |
| Main Products | View Products Tab |
| Major Markets | Global |
| Response Time | Contact Supplier |
| Response Rate | New Supplier |
Before ordering Basic Brown 4 from Shramik Chemicals, verify the product’s compliance with your industry’s quality standards. Request a Certificate of Analysis (CoA) to confirm the molecular formula, weight, and purity, as these directly impact dyeing performance. Ensure the supplier can provide batch consistency data, particularly if your production requires uniform colour across large volumes.
Confirm logistics details such as lead time, which may vary based on Shramik Chemicals’ production schedule and your order size. Incoterms should be negotiated upfront, with FOB or CIF being common for exports from India. Payment terms typically include a percentage upfront and the balance upon shipment, but these are subject to agreement. Clarify whether the supplier handles export documentation, including bills of lading and customs declarations.
Conduct quality checks upon receipt, testing the dye for solubility, pH stability, and colour consistency on your intended substrates. For textiles, perform a lab dip test to ensure the shade matches your requirements. Inspect packaging for integrity, as exposure to moisture can affect the powder’s flowability. Request a material safety data sheet (MSDS) to confirm handling and storage guidelines, and ensure all documentation aligns with your import regulations.
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When sourcing Basic Brown 4 | Bismark Brown R | Basic Dyes for your business, securing the right balance of quality and cost is essential. Shramik Chemicals, 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 $5/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 Basic Brown 4 | Bismark B requires careful attention to shipping logistics, customs compliance, and secure payment terms. Shramik Chemicals 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 Basic Brown 4 | Bismark B 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 Basic Brown 4 | Bismark B 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 Basic Brown 4 | Bismark Brown R | Basic Dyes from Shramik Chemicals is $5/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 Shramik Chemicals through EximNext.
The supplier, Shramik Chemicals, has set a Minimum Order Quantity (MOQ) of 1 Bags for Basic Brown 4 | Bismark B. For sample requests or smaller trial orders, contact the supplier directly through our platform's inquiry system.
The HS Code classification for Basic Brown 4 | Bismark Brown R | Basic Dyes depends on the specific grade and form. Contact Shramik Chemicals through EximNext for the exact HS Code and customs documentation required for your destination country.
To import Basic Brown 4 | Bismark B from India, negotiate shipping terms (FOB, CIF, or EXW) directly with Shramik Chemicals. Ensure you have the necessary import licenses for Products products in your destination country.
Yes, Shramik Chemicals 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 Shramik Chemicals through EximNext.
Shramik Chemicals offers Basic Brown 4 | Bismark B with standard export packaging. Custom packaging, private labeling, and OEM/ODM options may also be available for large wholesale orders.
Basic Brown 4 | Bismark B is actively imported by buyers worldwide. Request a destination-specific CIF or CFR quote from Shramik Chemicals through our platform.
Shramik Chemicals maintains international quality certifications. These ensure that the Basic Brown 4 | Bismark B 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. Shramik Chemicals 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 Shramik Chemicals.
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