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benzocaine hcl powder,benzocaine hcl powder,benzocaine powder manufacturer

benzocaine hcl powder is the hydrochloride form of the local anesthetic benzocaine. Its pharmacological action is the same as that of benzocaine, but its anesthetic effect is weaker than that of procaine. Local absorption is slow and the effect is long-lasting. benzocaine hcl powder Because it is insoluble in water, it cannot be used for infiltration anesthesia. It has analgesic and antipruritic effects. The medicine is usually made into powder or ointment. It is clinically used to treat wounds, ulcers, burns, skin abrasions and hemorrhoids. benzocaine hcl powder is also known as ethyl para-aminobenzoate, sinacecine. Those precipitated from water are colorless or white orthorhombic needle-like crystals or crystalline powders, and those precipitated from ether are square crystals. Odorless. Bitter taste. Relative molecular mass 1Chemicalbook65.19. Melting point 92 ℃. The boiling point is 310°C, 183~184°C (1.87×103Pa). Insoluble in water, soluble in ethanol, ether and chloroform, also soluble in almond oil, olive oil and dilute acid. Stable in air. Using p-nitrotoluene as raw material, in sulfuric acid, it is oxidized with sodium dichromate to generate p-nitrobenzoic acid, which is esterified with ethanol. In , use iron powder to reduce at 85~95 ℃, can get benzocaine crude product. After separation, it was washed with water and purified by recrystallization from ethanol. Benzocaine Hydrochloride Upstream and Downstream Product Information