Salicylic acid CAS#69-72-7

Salicylic acid CAS#69-72-7

Salicylic acid is an important organic synthetic raw material, widely used in medicine, pesticides, dyes, rubber, food and perfumes. In the pharmaceutical industry, the main drug productions of salicylic acid are sodium salicylate, wintergreen oil (methyl salicylate), aspirin (acetylsalicylic acid), salicylic acid amine, phenyl salicylate. In dye industry, it is used for production mordant pure yellow , direct yellow 3GN, direct yellow GR, direct brown 3GN, acid mordant brown G, acid mordant yellow GG, acid yellow dye complex. In pesticide production, salicylic acid is used for the synthesis of organic phosphorus pesticide Isocarbophos, intermediate isopropyl salicylate isofenphos methyl and Rodenticide warfarin, coumatetralyl intermediate 4-hydroxycoumarin. In rubber industry, it is used as anti scorching agent and production of ultraviolet absorbent and foaming agent. It is perfume material, used for the preparation of methyl salicylate, salicylic acid ethyl ester; food preservatives, its sodium Salt is mostly used, now a number of countries have been banned; methyl salicylate can be used as oral cleaning agents, such as toothpaste flavor.

Figure1 The structure of salicylic acid
Salicylic acid has sterilization ability, 2.5% alcohol solution (called spiritus) is used as a topical medicine in the treatment of tinea manus and tinea pedis, also can be made into ointment. Sodium salicylate can be used for food preservative or preservatives, also can be used for the preparation of toothpaste, mouthwash. Salicylic acid has antipyretic and analgesic effects, can cure rheumatism and so on. It's all esters can be used as drug and spices. Methyl salicylate has pleasant aromas of holly, is used for the preparation of perfume and soap flavor. The methyl salicylate is coated on the skin, can penetrate into the muscle and let out of salicylic acid to release local pain, so it also can be used for the treatment of pain, contusion, sprain and other medication. Isoamyl salicylate has orchid aroma, benzyl salicylate has weak ester aroma, both can prepare perfume or soap flavor. The common name of phenyl salicylate is Salo, was hydrolyzed into phenol and salicylic acid in the intestine , is a kind of effective enteral preservatives. Another Kind drug related to salicylic acid is para aminosalicylic acid (PAS, see "Para amino salicylic acid), Its sodium and calcium salts are used as anti TB drugs for acute exudative pulmonary tuberculosis (TB) and mucosal tuberculosis, is a weak antimicrobial drug, the effect is only 2% of streptomycin, often combined with streptomycin and isoniazid , in order to enhance the curative effect. It can be acetylated to the aspirin.c

Product Application of Salicylic acid CAS#69-72-7

Salicylic acid is widely used, eczema, psoriasis, salicylic acid can be used in acne, dandruff. The concentration of 3%~6%  can be used to horny, higher than 6% of salicylic acid can damage to tissue . Below 40% of concentration is suitable for the treatment of thick cocoon, corns and warts. Salicylic acid can also be added in the treatment of acne and dandruff. Nowadays many famous cosmetic ingredients: in 1993, Clinique CLINIQUE first launched 1% salicylic acid in soft water cream, immediately became one of Clinique's most successful products; In 1998, SK-II crystal induced skin cream added 1.5%BHA ingredients to the original, and salicylic acid has effect of treatment pores and cutin like the egg peeling analogy that caused the market boom; open access Olay popular products activating cream also contains 1.5% BHA components. However, due to the high concentration of salicylic acid, it has a certain degree of damage, cosmetics containing salicylic acid concentration has generally been limited between 0.2%~1.5%, containing salicylic acid cosmetics shall be added to the note of warning signs to determine the safety of long-term use and children under 3 years of age also shall not be used.

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