Import Phosphorous Acid — Buy in wholesale FOB from Supplier in China
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Phosphorous Acid
Yichang Kaixiang Chemical Co., Ltd. supplies phosphorous acid (H3PO3), a high-purity industrial chemical with the CAS number 13598-36-2, from its facility in Xiaoting District, Yichang, Hubei, China. This compound is a key intermediate in the production of phosphite salts and is widely used in fertilizer manufacturing, water treatment, and metal surface treatment. Its reducing properties make it valuable in chemical synthesis, particularly for applications requiring controlled oxidation states.
Phosphorous acid is a diprotic acid with a typical molecular weight of 82.00 g per mol and a melting point of 73.6 degrees Celsius. It is highly soluble in water, forming a colorless solution, and has a pKa of approximately 1.3 for its first dissociation. The acid is usually supplied as a clear, colorless liquid or as crystalline flakes, with a standard purity of 99 percent for industrial-grade use. Its ability to act as a reducing agent is a defining characteristic, particularly in reactions where it donates hydrogen atoms.
Primary buyers include agrochemical manufacturers, water treatment plants, and metal processing industries. In agriculture, phosphorous acid is used as a fungicide and to produce phosphite-based fertilizers, which help plants resist fungal diseases. For water treatment, it is employed to control scale and corrosion in industrial systems. Importers should confirm the packaging type (e.g., IBC totes, drums) and whether the supplier provides the necessary documentation for chemical imports, such as MSDS and compliance certificates.
| Chemical Name | Phosphorous Acid |
| Chemical Formula | H3PO3 |
| CAS Number | 13598-36-2 |
| Molecular Weight | 82.00 g/mol typical |
| Physical Form | Clear colorless liquid or crystalline flakes |
| Purity | 99% minimum typical |
| Melting Point | 73.6 °C typical |
| Solubility in Water | Highly soluble typical |
| pKa (First Dissociation) | 1.3 typical |
| Packaging | IBC totes, drums typical |
| Industry Standard | ISO 9001 typical for industrial-grade phosphorous acid |
Yichang Kaixiang Chemical Co., Ltd. is based at No. 6 Jinling Road, Xiaoting District, Yichang, Hubei, China. The company is classified as an imported-tier supplier, indicating it has experience in international trade. Its location in Hubei, a major chemical production hub, supports efficient logistics for exporting phosphorous acid. The supplier’s profile does not provide a response rate or average response time, so direct contact is recommended for inquiries.
The company specializes in industrial chemicals, with phosphorous acid as a core product. Its focus on high-purity chemicals for agricultural and industrial applications suggests a commitment to quality and consistency. Yichang Kaixiang Chemical does not disclose additional details about its production capacity, certifications, or history beyond the product listing. Buyers should request documentation such as MSDS, certificates of analysis, and compliance with international standards (e.g., ISO, SGS) to verify the product’s suitability for their needs.
Phosphorous Acid is a high-purity industrial chemical (CAS 13598-36-2) widely used as a reducing agent and intermediate in fertilizer production, water treatment, and metal surface treatment applications. This versatile phosphorus compound serves as a key raw material for producing phosphite salts and is essential in various chemical synthesis processes. Exported globally in industrial-grade form, this chemical plays a critical role in agricultural and industrial supply chains.
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Sourcing Phosphorous Acid from Yichang Kaixiang Chemical Co., Ltd. - China Import Guide
Before ordering phosphorous acid from Yichang Kaixiang Chemical Co., Ltd., verify the product’s purity and its suitability for your intended application. Industrial-grade phosphorous acid typically meets a minimum purity of 99 percent, but batch-specific certificates should be requested. Confirm the CAS number (13598-36-2) and the physical form (liquid or crystalline) to ensure it aligns with your processing requirements. Additionally, request the MSDS and any compliance certificates to meet your local regulatory standards.
Clarify logistics details such as packaging, lead time, and Incoterms with Yichang Kaixiang Chemical. IBC totes are standard for bulk shipments, while drums may be available for smaller orders. Lead times can vary depending on the order size and the supplier’s production schedule, so request a timeline upfront. Incoterms such as FOB or CIF should be confirmed, along with payment terms like L/C or T/T. Given the chemical nature of the product, ensure the supplier has experience with international chemical shipping to your destination port.
Quality checks for phosphorous acid should include testing for purity, pH, and the presence of any impurities or by-products. The typical pKa of 1.3 for the first dissociation is a key parameter for its performance in applications like water treatment. Inspection at the port of loading is advisable to confirm the condition of the packaging and the accuracy of the documentation. Yichang Kaixiang Chemical should provide all necessary MSDS and compliance certificates to facilitate smooth customs clearance and safe handling. For applications requiring specific purity levels, request a pre-shipment inspection or third-party testing.
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30 suppliersBuy Phosphorous Acid in Bulk — Verified Supplier in China
When sourcing Phosphorous Acid for your business, securing the right balance of quality and cost is essential. Yichang Kaixiang Chemical Co., Ltd., a verified supplier based in China, offers this product with key specifications including Industrial Grade, Technical Grade available, 98% - 99% min, and H3PO3. By purchasing directly from the manufacturer or authorized exporter, buyers can negotiate favorable FOB prices starting at $900/Bags and manage bulk orders with a minimum order quantity (MOQ) of 1 Bags. This product is actively traded under HS Code 2809.20, making it a staple in the Chemicals & Allied Products sector with strong demand from importing countries worldwide.
Phosphorous Acid Specifications, Trade Terms & Pricing
Importing Phosphorous Acid requires careful attention to shipping logistics, customs compliance, and secure payment terms. Yichang Kaixiang 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 2809.20 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 import export marketplace designed to make cross-border trade secure and efficient.
About Yichang Kaixiang Chemical Co., Ltd. — Supplier in China
Finding trustworthy partners is the foundation of successful importing. The supplier of this Phosphorous Acid 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 Chemicals & Allied Products category and connect with top-tier exporters on our comprehensive online B2B marketplace. Start your sourcing journey today.
Import Phosphorous Acid — Shipping, Logistics & Customs
Importing Phosphorous Acid 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 2809.20 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 Phosphorous Acid
What is the wholesale price of Phosphorous Acid?
The current listed wholesale price for Phosphorous Acid from Yichang Kaixiang Chemical Co., Ltd. is $900/Bags on FOB terms from China. Prices may vary depending on order volume, packaging, and destination. For the most accurate bulk quote, send a direct RFQ to Yichang Kaixiang Chemical Co., Ltd. through EximNext.
What is the Minimum Order Quantity (MOQ) for Phosphorous Acid?
The supplier, Yichang Kaixiang Chemical Co., Ltd., has set a Minimum Order Quantity (MOQ) of 1 Bags for Phosphorous Acid. For sample requests or smaller trial orders, contact the supplier directly through our platform's inquiry system.
What is the HS Code for Phosphorous Acid?
For international shipping and customs clearance, Phosphorous Acid is classified under HS Code 2809.20. Buyers should verify their local customs regulations to determine applicable import duties and taxes for this classification.
How can I import Phosphorous Acid from China?
To import Phosphorous Acid from China, negotiate shipping terms (FOB, CIF, or EXW) directly with Yichang Kaixiang Chemical Co., Ltd.. Ensure you have the necessary import licenses for Chemicals & Allied Products products in your destination country.
Is Yichang Kaixiang Chemical Co., Ltd. a verified supplier?
Yes, Yichang Kaixiang 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 Phosphorous Acid?
The key specifications for Phosphorous Acid supplied by Yichang Kaixiang Chemical Co., Ltd. include Industrial Grade, Technical Grade available, 98% - 99% min, and H3PO3. 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 Phosphorous Acid?
Yichang Kaixiang Chemical Co., Ltd. offers Phosphorous Acid with standard export packaging. Custom packaging, private labeling, and OEM/ODM options may also be available for large wholesale orders.
Which countries import Phosphorous Acid the most?
Phosphorous Acid is actively imported by buyers worldwide. Request a destination-specific CIF or CFR quote from Yichang Kaixiang Chemical Co., Ltd. through our platform.
What certifications does this Phosphorous Acid supplier hold?
Yichang Kaixiang Chemical Co., Ltd. maintains international quality certifications. These ensure that the Phosphorous Acid meets international quality, safety, and regulatory standards required for cross-border trade.
How do I place a bulk order for Phosphorous Acid on EximNext?
Click "Request Quotation" on this product page, specify your required quantity, preferred shipping terms, and destination country. Yichang Kaixiang 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 Yichang Kaixiang Chemical Co., Ltd..
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