About Wuhan Kemi-Works Chemical Co., Ltd. - Chemicals & Allied Products Supplier in China

Wuhan Kemi-Works Chemical Co., Ltd. is based in China and currently lists five active chemical products. The catalogue includes Bis(4-biphenyl)amine, N,N-Diphenylbenzidine, N,N,N',N'-Tetraphenylbenzidine, 4‑Iodobiphenyl and 4,4‑Diiodobiphenyl. These compounds belong to the aromatic amine and halogenated biphenyl families, which fall under HS Chapter 29 for organic chemicals. The supplier is recorded as an imported supplier with a harbor trust tier, indicating that the company primarily sells to overseas buyers. The product set represents specialty intermediates commonly used in polymer, pigment and electronic material formulations.

The five listed chemicals are described by their systematic names only; no additional grades or purity levels are provided in the source data. In the broader market, such aromatic amines are typically offered in analytical‑grade (≥99 % purity) or industrial‑grade (≥95 % purity) forms, and are supplied in sealed drums or IBCs. Buyers usually require a Certificate of Analysis and a Material Safety Data Sheet for each batch. The supplier’s catalogue does not mention any proprietary processes or exclusive certifications. All information presented follows the supplied facts and standard industry expectations for these chemical categories.

Product Range and Specialties of Wuhan Kemi-Works Chemical Co., Ltd.

The catalogue enumerates five distinct aromatic compounds: Bis(4‑biphenyl)amine, N,N‑Diphenylbenzidine, N,N,N',N'‑Tetraphenylbenzidine, 4‑Iodobiphenyl and 4,4‑Diiodobiphenyl. In the chemicals trade, these molecules are classified as high‑performance intermediates for the production of polyimides, conductive polymers and specialty pigments. Typical industry grades for such intermediates include ‘analytical grade’ with purity specifications of 99 % - 99.9 % and ‘technical grade’ with purity around 95 % - 98 %. Common specifications also cover moisture content (<0.1 %), residual solvents (<0.05 % by weight) and heavy‑metal limits (often <10 ppm). Packaging is usually in 200 L steel drums or 1 000 L IBCs, with nitrogen blanketing to prevent oxidation. Buyers often request a detailed batch COA that lists assay, impurity profile, water content and UV‑Vis absorbance data.

The listed halogenated biphenyls (4‑Iodobiphenyl, 4,4‑Diiodobiphenyl) are frequently used as precursors for cross‑linking agents and organometallic catalysts. Industry standards for these compounds often require verification of iodine content (typically >98 % by elemental analysis) and low levels of brominated or chlorinated by‑products. Suppliers may also provide data on crystallinity and particle size when the product is supplied as a solid powder, as these parameters affect downstream processing. The product range, while limited in number, covers a niche segment where precise molecular structure is critical for performance.

Trade and Export Information - Wuhan Kemi-Works Chemical Co., Ltd.

China remains one of the largest exporters of aromatic amines and halogenated biphenyls, with shipments primarily destined for manufacturers in the European Union, the United States, Japan and South Korea. Under HS Chapter 29, these chemicals are usually classified under headings 2905‑29 (heterocyclic compounds) or 2909‑29 (aryl‑substituted compounds), and customs authorities often request a full material safety data sheet and REACH registration evidence for EU imports. Commonly required certifications include ISO 9001 quality management, REACH registration numbers for the specific substance, and, where applicable, the EU’s Classification, Labelling and Packaging (CLP) compliance. Export logistics typically involve 20‑ft or 40‑ft containers loaded with drums, with Incoterms such as FOB Shanghai or CIF Los Angeles frequently used. Chinese exporters often employ double‑wall drums with inner liners to meet UN 3373 (dangerous goods) packaging standards for aromatic amines.

The regulatory environment for these chemicals emphasizes strict control of hazardous substances. Importing countries may request additional documentation such as a pre‑export verification document (PEVD) for REACH‑registered substances, as well as a declaration of compliance with the Globally Harmonized System (GHS). Freight forwarders handling these goods must ensure that the drums are properly marked with the UN number for toxic substances (UN 1760 for aromatic amines) and that the container is sealed in accordance with IMDG Code requirements when shipped by sea. Buyers should verify that the supplier can provide the necessary export licenses and that the shipment complies with any bilateral trade agreements affecting tariff rates.

Sourcing from Wuhan Kemi-Works Chemical Co., Ltd. - Buyer Guidance

When sourcing from Wuhan Kemi-Works, buyers should request a recent Certificate of Analysis that details assay, impurity limits, moisture and iodine content for the halogenated products. A current Material Safety Data Sheet, REACH registration number (if the buyer is in the EU) and any applicable ISO 9001 certification should also be obtained before confirming an order. Samples are typically supplied in 100 g quantities packaged in sealed glass vials, allowing the buyer to run independent purity and stability tests.

Buyers should verify the supplier’s capacity to meet standard packaging requirements - 200 L steel drums with nitrogen purge are common - and confirm the agreed Incoterm. Minimum order quantities for specialty aromatic amines often start at 1 kg per compound, but the exact MOQ can vary based on purity grade and packaging. Lead times from order confirmation to shipment usually range from 30 to 45 days, depending on batch size and any required regulatory documentation. Ensuring that all test reports and certificates are dated within the last six months helps mitigate the risk of non‑compliance during customs clearance.

What purity levels are typical for the listed aromatic amines?

Industry practice distinguishes analytical grade (≥99 % purity) from technical grade (≥95 % purity). Buyers should request a Certificate of Analysis that specifies the exact assay for each batch.

Which HS codes are normally applied to these chemicals?

Aromatic amines and halogenated biphenyls are generally classified under HS Chapter 29, often under headings 2905‑29 or 2909‑29, depending on the specific molecular structure.

What documentation should be requested before purchase?

A recent COA, Material Safety Data Sheet, REACH registration number (for EU buyers), and any ISO 9001 quality management certificate the supplier holds should be obtained.

Are samples available for testing?

Suppliers of specialty intermediates typically provide 100 g samples sealed in glass vials; the buyer can request these to verify purity and performance.

What are the typical packaging formats for bulk shipments?

Bulk shipments are usually packed in 200 L steel drums or 1 000 L IBCs, nitrogen‑purged, and marked according to UN hazardous‑goods regulations.

What Incoterms are commonly used for export from China?

FOB Shanghai and CIF Los Angeles are common Incoterms for chemical exports; the buyer should confirm the preferred term during negotiation.

What are the usual lead times and minimum order quantities?

Lead times range from 30 to 45 days after order confirmation, and minimum order quantities generally start at 1 kg per product, subject to grade and packaging.

Which regions are the main importers of these chemicals?

The European Union, the United States, Japan and South Korea are the primary markets for aromatic amines and halogenated biphenyls originating from China.