508-02-1 in stock Hot Sale Oleanic acid CAS NO.508-02-1

508-02-1 in stock Hot Sale Oleanic acid

 Paula Chem is affiliated to Zhejiang Paula Industry Co., Ltd. The registered capital of parent company is ¥50 million. The company has self-managerial import and export rights and dangerous goods business license. Paula was founded in 2008, and it is a professional chemical company that engages in R&D, production, and sales. Product scope covers medicines, food and feed additives, pesticides, dyes, intermediates, and fine chemicals. Marketing network covers the whole country and international market. In recent years, the company strives to improve product and service quality. Our products are sold well in Europe, America, Middle East, Asia, and other regions. Paula is a stable supplier for global 500 companies. The company has established R&D centers separately in Suzhou and Xi’an, and it has professional technical team, advanced inspection, experimental and pilot equipment such as high performance liquid chromatography, gas chromatography, magnetic high pressure kettle, and strong technical force. Moreover, the company has established favorable cooperation relations with several national research institutes. Our advantages: laboratory: the company has R&D center in several regions; production base: the company has production bases in Zhejiang, Jiangsu, and Shaanxi; favorable business relation: favorable cooperation relations with hundreds of qualified manufacturers; transportation: our international freight forwarder company has branches in Shanghai, Tianjin, Ningbo, Guangzhou, and other regions.

    Some of the products of paula chem are produced by our group subsidiaries: Zhejiang Haiqiang Chemical Co., Ltd. and Shaanxi Haiqiang phytochemistry Co., Ltd

    Quality control: implements ISO standard, and ISO9001:2000 Certification. Our quality control department is formed more than by 10 people, and it is divided into quality assure section and quality inspection section, the former is responsible for guiding and managing quality assure activities of the whole company, and making the activities comply with relevant laws, regulations and ISO 9001:2000 standards; the latter is in charge of analyzing and testing all production process from raw material to finished product. 

    In China, Paula Chem, as a leading good producer in chemical foreign superior manufacturer, has strict requirements on all employees. Our products are CAS-certified, high-standard and high-quality products. In addition, we have our own factory to provide stable supply, which means high-quality and stable supply and with best price. In fact, even now, there are a large number of high-quality products for sale in stock.      As an intermediates of Oleanic acid, the company has been strictly controlling product quality and striving to achieve high standards and strict requirements.As one of our Hot Salling products, we already have rich experience and understanding of 508-02-1 , and I believe we will definitely give you a satisfying shopping experience. Please contact us and look forward to cooperating with you.

508-02-1 in stock Hot Sale Oleanic acid

production method

1 Alcohol extraction method Cut 100g of wood root bark into small pieces or filaments, add 500ml 70% ethanol and reflux for 3 times, each time about 3h, and the alcohol extracts are combined; then most of the ethanol is recovered by distillation, and then sulfuric acid is added to make the concentration15%, reflux for 2h, filter after cooling, wash the filter cake 3 times with water, then boil 2 times with 3% NaOH solution, boil 1 time with water, and filter after each boiling to obtain the off-white crude sodium salt. Add about 8 times the amount of 85% or more ethanol to the crude product, 0.5% activated carbon, reflux for 40min, filter, adjust the filtrate to pH=3~4 with HCl, let it stand overnight, filter, wash the filter cake with distilled water until there is no chloride ion, and dry it. Oleanolic acid boutique.

2 Water extraction method After crushing the wood root bark block, decocting in water for 3 times, about 1 hour each time, combine the water decoction and concentrate it into a thin paste. Then add concentrated sulfuric acid and stir continuously to make the concentration reach 20%, heat for about 1h, let it cool and dilute with water, filter, after the filter cake is washed with water, boil 2 times with 3% NaOH solution, boil water once, and filter after each boiling , Get crude sodium salt. Add about 8 times the amount of the crude product to more than 85% ethanol, 0.5% activated carbon, reflux for 40 minutes, filter, and then adjust the filtrate to pH=3~4 with HCl, leave it overnight, filter, and wash the filter cake with distilled water

until it is free of chloride ions, and dry it. Get this product.

 Paula Chem is affiliated to Zhejiang Paula Industry Co., Ltd. The registered capital of parent company is ¥50 million. The 

company has self-managerial import and export rights and dangerous goods business license. Paula was founded in 2008, and 

it is a professional chemical company that engages in R&D, production, and sales. Product scope covers medicines, food and 

feed additives, pesticides, dyes, intermediates, and fine chemicals. Marketing network covers the whole country and 

international market. In recent years, the company strives to improve product and service quality. Our products are sold 

well in Europe, America, Middle East, Asia, and other regions. Paula is a stable supplier for global 500 companies. The 

company has established R&D centers separately in Suzhou and Xi’an, and it has professional technical team, advanced 

inspection, experimental and pilot equipment such as high performance liquid chromatography, gas chromatography, magnetic 

high pressure kettle, and strong technical force. Moreover, the company has established favorable cooperation relations 

with several national research institutes. Our advantages: laboratory: the company has R&D center in several regions; 

production base: the company has production bases in Zhejiang, Jiangsu, and Shaanxi; favorable business relation: 

favorable cooperation relations with hundreds of qualified manufacturers; transportation: our international freight 

forwarder company has branches in Shanghai, Tianjin, Ningbo, Guangzhou, and other regions. 

   Some of the products of paula chem are produced by our group subsidiaries: Zhejiang Haiqiang Chemical Co., Ltd. and 

Shaanxi Haiqiang phytochemistry Co., Ltd

　　Quality control: implements ISO standard, and ISO9001:2000 Certification. Our quality control department is formed 

more than by 10 people, and it is divided into quality assure section and quality inspection section, the former is 

responsible for guiding and managing quality assure activities of the whole company, and making the activities comply with 

relevant laws, regulations and ISO 9001:2000 standards; the latter is in charge of analyzing and testing all production 

process from raw material to finished product.