Nitrogen Building Blocks Dye Pharma
Sodium 2,4-diaminobenzenesulfonate is a grey-white powder, the monosodium salt of 2,4-diaminobenzenesulfonic acid. The bis-amino and sodium sulfonate groups in its structure confer high reactivity and water solubility, making it an indispensable key raw material in fine chemicals. Amid the trend toward environmental upgrading, it can serve as an internal emulsifying chain extender in waterborne polyurethane (WPU) synthesis, effectively replacing traditional organic solvents and helping downstream manufacturers achieve “near-zero VOC emission” green production processes.
Applications: Key intermediate for direct, acid and reactive dyes (e.g. Direct Fast Black, acid mordant black); sulfonamide drug intermediates; waterborne polyurethane chain extender.
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Appearance |
Grayish-white powder |
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Molecular Formula |
C6H7N2NaO3S |
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Molecular Weight |
210.19 g/mol |
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Purity |
≥ 80.0% (99.0% by GC) |
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Packaging |
25 kg bag |
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COA |
Available on request |
MOQ varies by product. For most intermediates our MOQ starts from 25 kg (one bag/drum). Sample quantities are also available for quality evaluation. Bulk Wholesale Sodium 2,4-diaminobenzenesulfonate CAS 3177-22-8.
Yes, small samples (50–100 g) are generally free of charge; the courier freight is collect or paid by the buyer. For some high-value products a sample fee may apply, which is refundable upon bulk order.
Yes. Every batch is tested in our QC laboratory and a COA is provided with each shipment. Third-party inspection (SGS etc.) is also welcome before loading.
For ready-stock items, 3–7 working days after payment. For large or custom-synthesis orders, typically 15–30 days depending on quantity and process.
Standard export packaging: 25 kg fiber drums / bags, 200 kg HDPE or iron drums. Customized packaging and labeling are available on request. Sodium 2,4-diaminobenzenesulfonate Factory Direct
We support FOB, CFR, CIF, DAP and EXW. We have stable partnerships with freight forwarders for sea, air and express delivery.
Yes. With four production bases and 26 years of process experience, we offer custom synthesis from gram scale to ton scale, supported by our R&D technical center. Sodium 2,4-diaminobenzenesulfonate Manufacturers in China.
T/T (bank transfer), L/C at sight, and other terms negotiable for long-term partners.