从China供应商批量进口3,5-Di-Tert-Butyl-4-Hydroxybenzaldehyde

3,5-Di-tert-butyl-4-hydroxybenzaldehyde (CAS 1620-98-0, molecular formula C15H22O2, molecular weight 234.34 g/mol) is a sterically hindered aromatic aldehyde bearing two tert-butyl groups ortho to the hydroxyl and a formyl group para to the phenolic oxygen. Shanghai Extd Sci And Tech Co., Ltd offers this compound as a building block for hindered phenol antioxidants and fragrance precursors, with the tert-butyl substitution pattern conferring thermal stability and resistance to oxidative degradation. The material is typically supplied as a crystalline solid with a melting point in the range of 187-190°C, though buyers should request a Certificate of Analysis to confirm the exact batch specification.

The synthesis of this compound proceeds via Reimer-Tiemann or Vilsmeier-type formylation of 2,6-di-tert-butyl-4-methylphenol (BHT) derivatives, followed by oxidation or direct formylation routes. Standard commercial grades target purity levels of 98.0% minimum by GC area, with typical impurities including unreacted starting material, over-oxidised carboxylic acid analogues, and residual solvents such as toluene or hexane. The phenolic hydroxyl group (pKa approximately 11.5) provides reactivity for esterification and etherification, while the aldehyde function enables Wittig, Grignard, and reductive amination chemistry. Storage under inert atmosphere at 2-8°C is standard practice to prevent auto-oxidation and colour development.

Pharmaceutical and fine chemical manufacturers use this intermediate for synthesising hindered phenol antioxidants for polymer stabilisation, notably in polypropylene and polyethylene processing. Fragrance houses employ it in the production of woody, amber, and musk notes through aldol condensation and subsequent cyclisation. The compound also serves as a precursor for UV absorbers and lubricant additives. Importers should verify with Shanghai Extd Sci And Tech Co., Ltd the exact purity specification, available pack sizes (typically 25 kg drums or 500 kg IBCs for bulk orders), and whether the material is offered as technical or reagent grade. Payment terms and Incoterms require direct confirmation, as these are not stated in the available listing data.

Shanghai Extd Sci And Tech Co., Ltd is located at Wenshui Road 301 D123, Shanghai 200135, China, operating within the Shanghai municipal chemical trading district. The company holds an imported supplier tier classification and a harbour trust tier rating on the sourcing platform. The response rate is recorded at 0.00% with zero average response hours, indicating that direct enquiry may be required to establish live communication channels and confirm current operational status.

The listing does not disclose manufacturing capacity, R&D facilities, warehousing infrastructure, or specific quality management system certifications held by the company. No information is provided on annual turnover, employee count, or key clientele. Buyers are advised to request a company profile, business licence, and ISO certification copies directly from Shanghai Extd Sci And Tech Co., Ltd before committing to orders, particularly given the chemical nature of the product and regulatory requirements for import documentation.