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The Chemistry of Fragrance in Fragrance [ 2022-09-22 ]

Fragrances can be broadly classified into two categories: synthetic fragrances and natural fragrances.

China's Flavor and Fragrance Evolutionary Development History [ 2022-09-07 ]

China is the world's largest producer of natural flavors and fragrances. There are about 7,000 varieties of spices in the world, and more than 1,000 kinds of spices are produced in China. The history of spice application is also developed along with the progress of human civilization.

Are Flavors Harmful to Humans? [ 2022-08-31 ]

Flavors are synthetic concentrates with a certain natural aroma, the so-called natural flavors are only the main flavoring agent is naturally extracted, after which other auxiliary agents need to be added artificially.

What is Pharmaceutical Intermediate? [ 2022-08-26 ]

Intermediates are a very important type of fine chemical products, in essence, they are a kind of "semi-finished products", mainly used in the synthesis of pharmaceuticals, pesticides, coatings, dyes and fragrances.

Ranitidine Hydrochloride [ 2022-07-25 ]

Ranitidine hydrochloride is an organic compound with the molecular formula C13H23ClN4O3S, a whitish or yellowish crystalline powder with an odour, slightly bitter and astringent taste. It is extremely hygroscopic. It is readily soluble in methanol or water or acetic acid, slightly soluble in ethanol and slightly insoluble in chloroform or acetone.

Production of BPDA by dehalogenated coupling of phthalic anhydride [ 2022-07-11 ]

In this paper, the dehalogenated coupling method of 4-bromo-phthalic anhydride was used, i.e., the reaction of phthalic anhydride with bromosol to form the sodium salt of 4-bromo-phthalic acid, followed by a two-step reaction of dehalogenated coupling and dehydration to produce BPDA.

Three Preparation Methods to Make BPDA [ 2022-06-25 ]

BPDA (3,3',4,4'-biphenyltetracarboxylic dianhydride) is the raw material of polyimide resin, one of the super engineering plastics, and is used as an important component material for many products in the information and electronics field such as cell phones and copiers.

Piperonal, Heliotropine, and Its Properties [ 2022-06-13 ]

Heliotropine, also known as jasmine aldehyde, chemically known as 3,4-dioxymethylene benzaldehyde (3,4-methylenedioxy benzaldehyde), is widely used in synthetic fragrances, pharmaceuticals, food, daily chemicals, electroplating, etc.

The Specific Difference between API and Intermediates [ 2022-05-31 ]

You may have heard about API and?Intermediates, but do you know the difference between them? We will show them in this blog.

Advice on Taking Ranitidine Medication [ 2022-05-12 ]

Ranitidine is used to treat stomach and intestinal ulcers and to prevent them from coming back after they have healed. This drug is also used to treat certain stomach and throat (esophageal) problems. It works by reducing the amount of acid produced by the stomach.

ABOUT US

Hebei Haili fragrances Co., Ltd. was established in December 2003, covering an area of 26700m2, with a registered capital of 40.2 million, 281 employees and a sales volume of 198 million in 2019.
The company specializes in the development, production and sales of chemical APIs, spices, polyimide monomers.

WHY CHOOSE US

Jinsha Road, Shijiazhuang Economic and Technological Development Zone

+86-0311-83098090 83098095

yq@chinahlchem.com

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