Import 3, 4-Dihydroxybenzaldehyde — Buy in Bulk from Supplier in China

3,4-Dihydroxybenzaldehyde (CAS 139-85-5, also known as protocatechuic aldehyde) is a dihydroxy aromatic aldehyde supplied by Linhai Xinghua Chemical Factory from Taizhou, Zhejiang Province, China. The compound features two hydroxyl groups at the 3 and 4 positions on a benzaldehyde scaffold, with a molecular formula of C7H6O3 and molecular weight of 138.12 g/mol. The supplier describes the material as available in high-purity grades in crystalline form, suitable for pharmaceutical, agrochemical, and specialty chemical synthesis. The catechol-aldehyde structure confers both reducing activity and versatile reactivity for further functionalisation.

The crystalline form described by the supplier is typical for this compound, which melts at approximately 153-157 °C with decomposition. The material exhibits good stability under normal storage conditions, though the catechol moiety is susceptible to air oxidation, particularly in alkaline conditions, forming coloured quinone oligomers. Standard industry practice stores this material under inert atmosphere or with antioxidant stabilisers for long-term retention. The high solubility in organic solvents such as ethanol, methanol, acetone, and dimethylformamide, combined with moderate water solubility, supports its use in diverse reaction media. Typical packaging for this grade of material ranges from 1 kg to 25 kg containers with inner polyethylene liners, though the buyer should confirm exact specifications with Linhai Xinghua Chemical Factory.

Primary applications span pharmaceutical intermediate manufacture (notably for cardiovascular and neuroactive agent synthesis), antioxidant formulations in cosmetics and food contact materials, and as a precursor for vanillin and related flavour compounds. The catechol-aldehyde core is also valuable in materials science for polymer cross-linking and metal chelation chemistry. Buyers are typically API manufacturers, contract synthesis providers, and fine chemical distributors in Europe, North America, and India. The Zhejiang location offers access to Ningbo-Zhoushan Port, one of China's largest deepwater ports. Importers should confirm whether Linhai Xinghua Chemical Factory manufactures this material directly or sources from a contracted facility, and verify GMP or ISO compliance status for pharmaceutical-grade requirements.

Linhai Xinghua Chemical Factory is located in the Chemical Industry Zone, Yanjiang Town, Linhai City, Taizhou, Zhejiang Province, 317022, China. The supplier holds an Imported tier classification and a Harbor trust tier on the platform. The response rate is recorded at 0.00% with zero average response hours, indicating no active inquiry response data is currently captured. The factory name suggests production facility status rather than pure trading, though buyers should independently verify manufacturing scope and whether the site operates under environmental compliance permits for phenolic aldehyde production.

The supplier's listing emphasises pharmaceutical and agrochemical applications without specifying GMP certification, ISO 9001, or other quality management systems. No stated employee count, annual revenue, or major client references appear in the profile. The address in a designated chemical industry zone indicates some level of regulatory zoning compliance for chemical manufacture. Buyers should request the business licence,安全生产许可证 (safety production licence), and environmental compliance documentation specific to 3,4-dihydroxybenzaldehyde production before committing to volume orders. The Taizhou location in Zhejiang Province places this supplier within one of China's densest chemical manufacturing clusters, with established logistics to Ningbo Port.