Import Thiourea Dioxide — Buy in wholesale FOB from Supplier in Hong Kong
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Thiourea Dioxide
Thiourea Dioxide, also known as Formamidine Sulfinic Acid, is supplied as a white crystalline powder with the molecular formula CH4N2O2S and CAS number 1758-73-2. The supplier states a production capability of 50 000 metric tonnes per year, indicating bulk‑grade availability for industrial users. This reducing agent is marketed as a high‑performance alternative to sodium hydrosulfite in bleaching and dyeing operations.
While the exact purity is not disclosed, industry practice for this chemical is a typical purity of 98‑99 % with moisture content below 0.5 %. Particle size distribution commonly falls within the 0‑200 mesh range, which supports rapid dissolution in aqueous systems. These characteristics give the product the stability required for consistent performance in pulp‑paper, textile, leather and fine‑chemical synthesis processes.
Typical buyers include paper mills, textile finishers, pharmaceutical intermediates manufacturers and resin producers who need a reliable reducing agent for large‑scale batches. The material is usually shipped in bulk, packed in 25 kg fiber drums or bags, and can be delivered under FOB or CIF terms depending on the importer’s logistics plan. Importers should verify the supplier’s export documentation and confirm any specific handling or safety requirements before finalising the order.
| Chemical name | Formamidine Sulfinic Acid (Thiourea Dioxide) |
| Molecular formula | CH4N2O2S |
| CAS number | 1758-73-2 |
| Physical form | White crystalline powder |
| Typical purity | 98-99% (typical) |
| Typical moisture content | <0.5% (typical) |
| Typical particle size | 0-200 mesh (typical) |
| Typical packaging | 25 kg fiber drums or 25 kg bags (typical) |
| Production capacity | 50 000 metric tonnes per year (supplier stated) |
Henan Langrui Chemical Co. Ltd. is registered at 513 Top Enterprise, No. 19 Minhang Road, Zhengzhou City, Henan Province, China, and lists Hong Kong as its export hub. The company holds a harbour‑level trust tier on the marketplace, but its response rate and average response time are currently recorded as zero, indicating that buyers should initiate contact well in advance of any deadline.
The firm specialises in the manufacture of thiourea dioxide and related pulp‑bleaching agents, positioning the product as a preferred reducing agent for several heavy‑industry sectors. No specific certifications, such as ISO or REACH, are disclosed in the listing, so importers are advised to request copies of any relevant test reports or compliance certificates directly from the supplier before committing to a purchase.
Thiourea Dioxide, also known as Formamidine Sulfinic Acid (FAS), is a high-performance reducing agent widely used in pulp and paper bleaching as well as textile dyeing and finishing processes. This white crystalline powder offers excellent reducing properties and stability, making it a preferred alternative to sodium hydrosulfite in industrial applications. Exported in bulk quantities from major manufacturing hubs, it serves buyers in the paper, textile, pharmaceutical, and chemical synthesis industries worldwide.
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Sourcing Thiourea Dioxide from Henan Langrui Chemical Co. Ltd. - Hong Kong Import Guide
Before placing an order, verify the supplier’s legal registration, request a recent business licence and confirm the authenticity of any provided certificates of analysis. Checking the CAS number, purity range and moisture content against your process specifications will reduce the risk of incompatibility during production.
Discuss logistics early: confirm the preferred Incoterm (FOB, CIF or DDP), the port of loading in Hong Kong and the expected lead time for bulk shipments. Payment terms are typically negotiated as a 30 % deposit with the balance payable against shipping documents, but exact conditions should be agreed in writing before the contract is signed.
Arrange for third‑party inspection of the product prior to loading, focusing on purity, moisture and particle size. Obtain the full safety data sheet, a certificate of origin and any relevant customs documentation to streamline clearance at the destination port. These steps help ensure the material meets both quality and regulatory requirements.
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100 listingsTop Verified Suppliers for Thiourea Dioxide
30 suppliersBuy Thiourea Dioxide in Bulk — Verified Supplier in Hong Kong
When sourcing Thiourea Dioxide for your business, securing the right balance of quality and cost is essential. Henan Langrui Chemical Co. Ltd., a verified supplier based in Hong Kong, offers this product with key specifications including Industrial Grade, Formamidine Sulfinic Acid (FAS), Min 98% (Typical 98.5-99%), and White Crystalline Powder. By purchasing directly from the manufacturer or authorized exporter, buyers can negotiate favorable FOB prices starting at $2300/Bags and manage bulk orders with a minimum order quantity (MOQ) of 1 Bags. This product is actively traded under HS Code 2930.90, making it a staple in the Industrial Chemicals sector with strong demand from importing countries worldwide.
Thiourea Dioxide Specifications, Trade Terms & Pricing
Importing Thiourea Dioxide requires careful attention to shipping logistics, customs compliance, and secure payment terms. Henan Langrui Chemical Co. Ltd. offers flexible shipping options such as Full Container Load (FCL) or Less than Container Load (LCL) via sea freight. To ensure a smooth transaction, buyers should verify import duties for HS Code 2930.90 in their destination country. 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 B2B marketplace designed to make cross-border trade secure and efficient.
About Henan Langrui Chemical Co. Ltd. — Supplier in Hong Kong
Finding trustworthy partners is the foundation of successful importing. The supplier of this Thiourea Dioxide 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 Industrial Chemicals category and connect with top-tier exporters on our comprehensive global B2B marketplace. Start your sourcing journey today.
Import Thiourea Dioxide — Shipping, Logistics & Customs
Importing Thiourea Dioxide 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 for HS Code 2930.90 in their destination country. Common payment methods include Letter of Credit (L/C), Telegraphic Transfer (T/T), and Documents against Payment (D/P).
Frequently Asked Questions About Thiourea Dioxide
What is the wholesale price of Thiourea Dioxide?
The current listed wholesale price for Thiourea Dioxide from Henan Langrui Chemical Co. Ltd. is $2300/Bags on FOB terms from Hong Kong. Prices may vary depending on order volume, packaging, and destination. For the most accurate bulk quote, send a direct RFQ to Henan Langrui Chemical Co. Ltd. through EximNext.
What is the Minimum Order Quantity (MOQ) for Thiourea Dioxide?
The supplier, Henan Langrui Chemical Co. Ltd., has set a Minimum Order Quantity (MOQ) of 1 Bags for Thiourea Dioxide. For sample requests or smaller trial orders, contact the supplier directly through our platform's inquiry system.
What is the HS Code for Thiourea Dioxide?
For international shipping and customs clearance, Thiourea Dioxide is classified under HS Code 2930.90. Buyers should verify their local customs regulations to determine applicable import duties and taxes for this classification.
How can I import Thiourea Dioxide from Hong Kong?
To import Thiourea Dioxide from Hong Kong, negotiate shipping terms (FOB, CIF, or EXW) directly with Henan Langrui Chemical Co. Ltd.. Ensure you have the necessary import licenses for Industrial Chemicals products in your destination country.
Is Henan Langrui Chemical Co. Ltd. a verified supplier?
Yes, Henan Langrui Chemical Co. Ltd. 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.
What are the key specifications of Thiourea Dioxide?
The key specifications for Thiourea Dioxide supplied by Henan Langrui Chemical Co. Ltd. include Industrial Grade, Formamidine Sulfinic Acid (FAS), Min 98% (Typical 98.5-99%), and White Crystalline Powder. For a complete technical data sheet or Certificate of Analysis (COA), send an inquiry directly to the supplier through EximNext.
What packaging options are available for bulk orders of Thiourea Dioxide?
Henan Langrui Chemical Co. Ltd. offers Thiourea Dioxide with standard export packaging. Custom packaging, private labeling, and OEM/ODM options may also be available for large wholesale orders.
Which countries import Thiourea Dioxide the most?
Thiourea Dioxide is actively imported by buyers worldwide. Request a destination-specific CIF or CFR quote from Henan Langrui Chemical Co. Ltd. through our platform.
What certifications does this Thiourea Dioxide supplier hold?
Henan Langrui Chemical Co. Ltd. maintains international quality certifications. These ensure that the Thiourea Dioxide meets international quality, safety, and regulatory standards required for cross-border trade.
How do I place a bulk order for Thiourea Dioxide on EximNext?
Click "Request Quotation" on this product page, specify your required quantity, preferred shipping terms, and destination country. Henan Langrui Chemical Co. Ltd. will respond with a detailed wholesale quote including FOB pricing, lead time, and payment options.
What payment methods are accepted?
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 Henan Langrui Chemical Co. Ltd..
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