Salicylic acid CAS NO.69-72-7

Min.Order: 100 Gram
Payment Terms: L/C,D/A,D/P,T/T

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Keywords

ACIDUM SALICYLICUM
2-HYDROXYBENZOIC ACID
ACETYLSALISYLIC ACID IMP C

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ProName: Salicylic acid
CasNo: 69-72-7
Molecular Formula: C7H6O3
Appearance: White crystalline powder, odorless
Application: It is an important raw material for fi...
DeliveryTime: Within ten working day
PackAge: 1KG;10KG;100KG
Port: Shang hai
ProductionCapacity: 100 Kilogram/Month
Purity: 99%
Transportation: by sea or by air
LimitNum: 100 Gram

Superiority

Salicylic acid, also known as Salic acid, is more acidic than benzoic acid. It turns dark in the sun. When it meets with iron ions, it turns into a purple chelate. When it reacts with ferric chloride, it turns purple. It is unstable to heat. When it is heated to 200 ℃, it is easy to decarboxylate to form phenol.

In nature, salicylic acid mostly exists in the form of methyl ester in birch bark oil, and its content can reach 96%. It also exists in cinnamon oil, violet oil and Holly oil. Free salicylic acid only exists in a small amount in plants. Salicylic acid has the duality of phenol and carboxylic acid. When heated, it sublimates. When heated rapidly, it decomposes to produce phenol and carbon dioxide. When it reacts with sodium hydroxide, both hydroxyl and carboxyl groups are neutralized to form double salt, but when it reacts with sodium carbonate, only carboxyl group is neutralized to form single salt. When it reacts with alcohol or phenol, salicylic acid ester corresponding to chemical book can be formed; when it reacts with carboxylic acid or anhydride, corresponding carboxylic acid ester can be formed.

This product is toxic, irritating to skin and mucous membrane, and can react with protein in body tissue, so it is corrosive. On the other hand, it can be sterilized. LD50 was 100-1600mg / kg orally in rats.

The storage is stable, but the powder can explode when mixed with air.

In industry, phenol sodium salt is prepared by reaction of phenol sodium salt and carbon dioxide under heating and pressure (Kolbe Schmitt reaction). Firstly, phenol is neutralized with sodium hydroxide to form phenol sodium salt, and then carbon dioxide is absorbed at 125 ℃ under 4-7 × 105 PA (4-7 atmospheres) to form phenyl sulfonate, which is rearranged to form sodium salicylate and acidified to form salicylic acid.

Salicylic acid is widely used in eczema, psoriasis, acne and dandruff. The concentration of salicylic acid in the range of 3% - 6% can be used to exfoliate, while the concentration of salicylic acid in the range of 6% is destructive to tissues. The concentration below 40% is suitable for the treatment of corns, thick cocoons and viral warts. Salicylic acid can also be added to drugs for acne and dandruff

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COMPANY INTRODUCTION

JIN DUN CHEMICAL belongs to JIN DUN GROUP. It is a professional enterprise dedicated to the development and production of special (meth)acrylate monomers. The head office is located in Shanghai city, near Hongqiao airport.The R&D center of JIN DUN is located in Ningbo city, Zhejiang province.

JIN DUN CHEMICAL focus on the coating, automobile, electricity and pharmaceutical area, always try best to be the professional supplier of new raw material for the advanced material in coating, automobile chemicals, electricity chemicals and pharmaceutical intermediate.

The EU company of JIN DUN CHEMICAL located at Frankfurt in Germany. It makes us service our customer better in EU, but also takes more valued information for our creation and future developing.

Welcome our customers and friends to visit our company.

Salicylic acid CAS NO.69-72-7

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