BASIC GREEN 4

BASIC GREEN 4 (CI 42000, CAS 569-64-2) is a triarylmethane basic dye with molecular formula C23H25ClN2 and molecular weight 364.91 g/mol, supplied by Hanghzou Emperor Chemical Co., Ltd from Hangzhou, Zhejiang Province, China. This dye presents as green belt flash crystallisation with a bright blue light green shade, soluble in both cold and hot water to give a blue-green solution, and readily soluble in ethanol. The supplier packages this material in 25 kg drums, carton boxes, or bags for industrial shipment.

The dye exhibits specific fastness properties: light fastness of grade 3, perspiration fastness (fading) of 4-5, perspiration fastness (stain) of 4-5, soaping fastness (fading) of 4-5, and soaping fastness (stain) of 4-5 on standard substrates. In concentrated sulfuric acid it appears yellow, diluting to dark orange; in nitric acid it shows orange, diluting to orange-brown. Sodium hydroxide addition to the dye solution produces a slightly greenish-white precipitate, while hydrochloric acid addition yields a red-shade colour change.

This product serves acrylic fibre, silk, wool, and acetate fibre dyeing applications, with additional use in leather, hemp, bamboo, wood, and paper shading. It also finds application in colour starch manufacture and as a solvent dye. Industrial buyers include textile mills, leather tanneries, paper processors, and specialty chemical manufacturers. The supplier operates from a harbor trust tier with listed address in Hangzhou Xiaoshan district (postal code 311200). Buyers should note the supplier's response rate is currently zero and direct contact is needed to confirm current availability, minimum order quantities, and exact Incoterms for international shipment.

Hanghzou Emperor Chemical Co., Ltd is located in Hangzhou Xiaoshan, Zhejiang Province, China, with postal address 311200. The supplier holds a harbor trust tier classification on this marketplace, with a response rate of 0.00% and zero average response hours recorded. The listing provides full contact address details including district, city, province and country, though no telephone, email, or website contact is stated in the extracted data.

The company's listed product focus is BASIC GREEN 4, a basic dye for industrial colouration applications. No manufacturing capacity, year of establishment, employee count, revenue figures, or client references are present in the source data. Buyers should independently verify the supplier's production capabilities, quality management systems, and export licence status before committing to orders. The zero response metric suggests potential communication delays; buyers may need to follow up persistently or use alternative channels to reach this Hangzhou-based chemical supplier.