Import O/P-Toluene Sulfonamide (Optsa) — Buy in wholesale FOB from Supplier in China
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O/p-toluene Sulfonamide (optsa)
O/P‑Toluene Sulfonamide (OPTSA) is supplied by Heze Kingvolt Chemical Co., Ltd. in technical grade. The chemical has the formula C7H9NO2S and is presented as a white crystalline powder. Purity is reported as exceeding 99 % and the product is packed in either 25 kg paper bags or 200 kg steel drums for bulk handling. The supplier is based in Heze, Shandong Province, China, operating from Juancheng Industry Park.
Technical grade sulfonamides such as OPTSA typically meet purity levels between 98 % and 99.5 % and are offered in bulk packaging to suit large‑scale formulators. Standard industry practice limits moisture content to 0.5 % or less and expects a bulk density around 1.3 g cm⁻³. These parameters ensure consistent reactivity when the compound is used as a curing agent in epoxy or phenolic resin systems, or as an intermediate for plasticisers, dyes and pigments.
End users include manufacturers of coatings, adhesives and engineering plastics that require reliable epoxy curing performance. Buyers should discuss minimum order quantities, lead‑time expectations and preferred Incoterms such as FOB or CIF directly with the supplier, as these details are not disclosed in the listing. Payment terms and any required certifications should also be confirmed before contract finalisation.
| Chemical Name | O/P‑Toluene Sulfonamide (OPTSA) |
| Molecular Formula | C7H9NO2S |
| Grade | Technical grade |
| Purity | ≥99 % (typical purity for technical grade is 98‑99.5 %) |
| Packaging | 25 kg paper bags or 200 kg steel drums (typical bulk packaging options) |
| Physical State | Solid powder |
| Appearance | White crystalline powder |
| Typical Moisture Content | ≤0.5 % (standard for sulfonamide intermediates) |
| Typical Bulk Density | ≈1.3 g cm⁻³ (standard for solid organic powders) |
| Standard Test Method | ISO 9001 compliance for manufacturing process (typical industry quality system) |
Heze Kingvolt Chemical Co., Ltd. operates from Juancheng Industry Park, Heze, Shandong, China (postal code 274600). The supplier holds a harbour‑tier verification, indicating that it has passed the platform's basic compliance checks. Current response metrics show a 0 % response rate and no recorded response time, so buyers should allow additional time for communication.
The company lists O/P‑Toluene Sulfonamide (OPTSA) as its primary offering, describing it as a technical‑grade sulfonamide compound used in epoxy curing, plasticiser production and pigment manufacturing. The supplier states that the product is supplied in 25 kg bags or 200 kg drums but does not provide details on minimum order quantities, lead times, or specific certifications, which must be obtained through direct enquiry.
O/P-Toluene Sulfonamide (OPTSA) is a high-performance sulfonamide compound widely utilized as a curing agent in epoxy and phenolic resin systems, and as a chemical intermediate in the manufacture of plasticizers, dyes, and pigments. Supplied in technical grade with purity typically exceeding 99%, it is packaged in 25kg bags or 200kg steel drums for convenient handling and logistics. This commodity is in steady demand across the coatings, adhesives, and plastics industries globally, making it a relevant product for international chemical traders and distributors.
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Sourcing O/p-toluene Sulfonamide (optsa) from Heze Kingvolt Chemical Co., Ltd. - China Import Guide
Before placing an order, verify the batch purity by requesting a recent Certificate of Analysis and confirm the exact packaging size that will be delivered. Ask the supplier to provide any existing safety data sheets and to clarify whether the product complies with relevant ISO standards or other regulatory requirements applicable to your market.
Discuss logistics early: determine whether the shipment will be under FOB, CIF or another Incoterm, and agree on the port of loading in China. Because the supplier’s response rate is currently low, allow extra time for negotiations and confirm the expected lead time for production and dispatch. Clarify acceptable payment methods, such as T/T against LC, and any required advance payment percentages.
Plan for quality assurance by arranging an independent third‑party inspection prior to loading, focusing on purity, moisture content and packaging integrity. Obtain the full set of documents - including the COA, MSDS, and packing list - before shipment to streamline customs clearance. Establish a clear protocol for handling any non‑conformities that may arise during inspection.
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30 suppliersBuy O/P-Toluene Sulfonamide ( in Bulk — Verified Supplier in China
When sourcing O/P-Toluene Sulfonamide (Optsa) for your business, securing the right balance of quality and cost is essential. Heze Kingvolt Chemical Co., Ltd., a verified supplier based in China, offers this product with key specifications including Technical Grade, Industrial Use, Min 99.0% (O/P-Isomer Mix), and Crystalline Powder / Flakes. By purchasing directly from the manufacturer or authorized exporter, buyers can negotiate favorable FOB prices starting at $20/Bags and manage bulk orders with a minimum order quantity (MOQ) of 1 Bags. This product is actively traded under HS Code 2935.00, making it a staple in the Industrial Chemicals sector with strong demand from importing countries worldwide.
O/P-Toluene Sulfonamide ( Specifications, Trade Terms & Pricing
Importing O/P-Toluene Sulfonamide ( requires careful attention to shipping logistics, customs compliance, and secure payment terms. Heze Kingvolt 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 2935.00 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 Heze Kingvolt Chemical Co., Ltd. — Supplier in China
Finding trustworthy partners is the foundation of successful importing. The supplier of this O/P-Toluene Sulfonamide ( 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 O/P-Toluene Sulfonamide ( — Shipping, Logistics & Customs
Importing O/P-Toluene Sulfonamide ( 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 2935.00 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 O/P-Toluene Sulfonamide (
What is the wholesale price of O/P-Toluene Sulfonamide (Optsa)?
The current listed wholesale price for O/P-Toluene Sulfonamide (Optsa) from Heze Kingvolt Chemical Co., Ltd. is $20/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 Heze Kingvolt Chemical Co., Ltd. through EximNext.
What is the Minimum Order Quantity (MOQ) for O/P-Toluene Sulfonamide (?
The supplier, Heze Kingvolt Chemical Co., Ltd., has set a Minimum Order Quantity (MOQ) of 1 Bags for O/P-Toluene Sulfonamide (. For sample requests or smaller trial orders, contact the supplier directly through our platform's inquiry system.
What is the HS Code for O/P-Toluene Sulfonamide (Optsa)?
For international shipping and customs clearance, O/P-Toluene Sulfonamide (Optsa) is classified under HS Code 2935.00. Buyers should verify their local customs regulations to determine applicable import duties and taxes for this classification.
How can I import O/P-Toluene Sulfonamide ( from China?
To import O/P-Toluene Sulfonamide ( from China, negotiate shipping terms (FOB, CIF, or EXW) directly with Heze Kingvolt Chemical Co., Ltd.. Ensure you have the necessary import licenses for Industrial Chemicals products in your destination country.
Is Heze Kingvolt Chemical Co., Ltd. a verified supplier?
Yes, Heze Kingvolt 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 O/P-Toluene Sulfonamide (Optsa)?
The key specifications for O/P-Toluene Sulfonamide (Optsa) supplied by Heze Kingvolt Chemical Co., Ltd. include Technical Grade, Industrial Use, Min 99.0% (O/P-Isomer Mix), and Crystalline Powder / Flakes. 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 O/P-Toluene Sulfonamide (?
Heze Kingvolt Chemical Co., Ltd. offers O/P-Toluene Sulfonamide ( with standard export packaging. Custom packaging, private labeling, and OEM/ODM options may also be available for large wholesale orders.
Which countries import O/P-Toluene Sulfonamide ( the most?
O/P-Toluene Sulfonamide ( is actively imported by buyers worldwide. Request a destination-specific CIF or CFR quote from Heze Kingvolt Chemical Co., Ltd. through our platform.
What certifications does this O/P-Toluene Sulfonamide ( supplier hold?
Heze Kingvolt Chemical Co., Ltd. maintains international quality certifications. These ensure that the O/P-Toluene Sulfonamide ( meets international quality, safety, and regulatory standards required for cross-border trade.
How do I place a bulk order for O/P-Toluene Sulfonamide (Optsa) on EximNext?
Click "Request Quotation" on this product page, specify your required quantity, preferred shipping terms, and destination country. Heze Kingvolt 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 Heze Kingvolt Chemical Co., Ltd..
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