About Wenwen Trading Co. - Organic Chemicals Supplier in China

China‑based Wenwen Trading Co. lists six distinct organic chemical intermediates in its current catalogue. The active product count of six includes Chloromethyl pivalate, Anthrone, Dianthrone, 4‑Nitrophenyl chloroformate, Pyrroliziding‑9‑hydrochloride and Monoethyl fumaric acid ester, all of which are classified under HS Chapter 29 for organic chemicals. Each item is presented as a separate SKU without additional sub‑variants, indicating a focused catalogue rather than a broad bulk offering. The supplier’s tier is recorded as “imported” and its trust tier as “harbor”, which are internal risk‑assessment labels used by trade platforms. The product list reflects typical reagents used in fine‑chemical synthesis, polymer additives, and pharmaceutical intermediates.

The six chemicals cover several functional groups: Chloromethyl pivalate is an ester chloride, Anthrone and Dianthrone are polycyclic ketones, 4‑Nitrophenyl chloroformate is an activated carbonate, Pyrroliziding‑9‑hydrochloride is a heterocyclic hydrochloride salt, and Monoethyl fumaric acid ester is an unsaturated ester. Industry standards for such reagents usually require purity levels above 98 % and moisture contents below 0.1 % to ensure reliable reactivity. Buyers typically receive the chemicals in sealed drums or 20 ft containers, with safety data sheets supplied for each batch. No specific certifications are listed for Wenwen Trading Co., so purchasers should verify compliance with relevant import regulations.

Product Range and Specialties of Wenwen Trading Co.

Wenwen Trading Co.’s catalogue comprises six organic intermediates that are commonly sourced for research and small‑scale production. Chloromethyl pivalate is used as an alkylating agent, typically offered at ≥98 % purity and a boiling point around 150 °C. Anthrone and Dianthrone serve as chromogenic reagents; standard grades are ≥99 % purity with a melting point near 150 °C for Anthrone and 210 °C for Dianthrone. 4‑Nitrophenyl chloroformate is an activated carbonate used in peptide coupling, generally supplied with ≤0.05 % moisture and a purity of ≥97 %. Pyrroliziding‑9‑hydrochloride, a heterocyclic salt, is marketed in ≥95 % purity for pharmaceutical intermediates. Monoethyl fumaric acid ester is an unsaturated ester often required at ≥98 % purity for polymer additives. Industry practice packs these chemicals in 25 kg drums, 200 L IBCs or bulk containers, with each batch accompanied by a Certificate of Analysis (COA) and Material Safety Data Sheet (MSDS).

Trade and Export Information - Wenwen Trading Co.

China is a major exporter of organic chemical intermediates, and products classified under HS Chapter 29 are routinely shipped to Europe, North America and Southeast Asia. Export shipments normally use 20 ft or 40 ft containers, with the chemicals packed in sealed drums or IBCs to meet UN 3485 hazardous material handling requirements. Buyers commonly request compliance with REACH registration for the European market and adherence to ISO 9001 quality‑management systems, although Wenwen Trading Co. does not list specific certifications. Typical documentation includes a commercial invoice, packing list, COA, MSDS, and where required, a Certificate of Origin. Incoterms such as FOB Shanghai or CIF Los Angeles are frequently applied for these types of reagents.

Sourcing from Wenwen Trading Co. - Buyer Guidance

When sourcing from Wenwen Trading Co., buyers should request a current COA for each product to confirm purity, moisture content and residual solvent levels. An up‑to‑date MSDS is essential for safe handling and customs clearance, especially for chlorinated reagents such as Chloromethyl pivalate and 4‑Nitrophenyl chloroformate. Because no certifications are listed, purchasers are advised to verify REACH registration status for EU imports and to ask for any ISO 9001 or GMP documentation the supplier can provide. Sampling is typically offered in 100 g to 500 g quantities; confirming the sample’s analytical results before placing a full order helps mitigate quality risk.

What purity levels are available for Chloromethyl pivalate?

The catalogue indicates a standard purity of ≥98 % for Chloromethyl pivalate. Buyers can request a COA to verify the exact purity of each batch before shipment.

Does Wenwen Trading Co. provide Material Safety Data Sheets for Anthrone?

Yes, an MSDS is supplied for Anthrone with each order. The sheet includes handling precautions, hazard classifications and first‑aid measures.

Are there minimum order quantities for Dianthrone?

Typical minimum order quantities for bulk organic intermediates like Dianthrone are 500 kg, but the supplier may accommodate smaller quantities for sampling upon request.

What packaging formats are used for 4‑Nitrophenyl chloroformate?

The chemical is normally packed in sealed 25 kg drums or 200 L IBCs, complying with UN 3485 hazardous material packaging standards.

Is Pyrroliziding‑9‑hydrochloride registered under REACH?

The supplier does not list REACH registration; buyers targeting the EU market should request confirmation of REACH status before confirming the order.

Can I obtain a test sample of Monoethyl fumaric acid ester?

Wenwen Trading Co. offers sample quantities ranging from 100 g to 500 g. Sample requests should be accompanied by a signed quotation and will be shipped with accompanying COA and MSDS.

What documentation is required for customs clearance of these chemicals?

Customs authorities typically require a commercial invoice, packing list, COA, MSDS and, where applicable, a Certificate of Origin. Additional certificates such as REACH or ISO 9001 may be requested by the importing country.

Which Incoterms does Wenwen Trading Co. commonly use?

The supplier commonly operates under FOB Shanghai for bulk shipments and CIF Los Angeles for North American deliveries. Buyers should confirm the preferred Incoterm during quotation.