Hawthorn nuclear distillate

Extraction Source: This product is made from the core of the red Crataegus Pinnati N.BInthea Bunge var.major N.EBrof the mountain of the of the Rosewood , and is a petroleumy liquid obtained by dry distillation, which is evaporated and concentrated the character of this product is a black viscous liquid, with a burning odor, the product is acidic, pH is 2.0 to 2.5, the product is insoluble in water, soluble in alcohol, ether and other organic solventsrelative density of : The relative density of this product is 1.13 to 1.19 (Appendix of the 1977 edition of the Chinese Pharmacopeia)(1) take this product a drop plus ethyl acetate 5 ml dissolved, filtered, take the filter about 2 ml, add 2 to 3 drops of hydrochloric acid and magnesium powder a little, heated on the water bath, showing fuchsia(2) take the filter about 1 ml, steam dry in a water bath, saturated acetone solution with boric acid 1 ml and 10% acetone solution 1 ml, continue to steam dry, the residue under the uv lamp to observe a strong purple fluorescence(3) take the number of droplets of filter, point filter paper, spray 1% aluminum iii-aluminum chloride ethanol solution, after drying, yellow spots, ultraviolet lamp (wavelength 365nm) under observation, obviously fluorescent, after the sample of the filter paper ammonia gas is deep yellow spots"Check" the burning residue must not exceed 20% (Appendix, 1977 edition of The Chinese Pharmacopoeia)the role and use of anti-itchanti-inflammatory drugs, there are itching, dissolved, bacteria suppression and other effects, for the treatment of chronic neurodermatitis, eczema, swollen and follicleitisuse usage and dosage in moderationstorage, cover the light, seal and savepreparation: new dermatitis paste