Medicinal grade salicylic acid magnesium oxide content ninety-nine

Shuiyangsuan Salicylic Acid This product is 2-hydroxybenzoic acid
.

C7H6O3 containing C7H6O3 shall not be less than 99.
5%.


【Properties】This product is white fine needle crystal or white crystalline powder; Odorless or almost odorless; The aqueous solution shows an acidic reaction
.

This product is easily soluble in ethanol or , dissolved in boiling water, slightly soluble in water, slightly soluble
in water.

Melting point The melting point of this product (general rule 0612) is 158~161°C
.

【Identification】(1) Take an aqueous solution of this product and add 1 drop of ferric chloride test solution, that is, purple viola color
.

(2) The infrared light absorption pattern of this product should be consistent
with the control map (spectral set 57 map).

【Inspection】The relevant substances are determined
by high performance liquid chromatography (General Rule 0512).

Test solution Take 0.
5g of this product, weigh it precisely, place it in a 100ml measuring flask, add the mobile phase to dissolve and dilute to the scale
.

Control solution Take 1ml of the sample solution with precision, put it in a 50ml measuring bottle, dilute it to the scale with the mobile phase, shake well, then take 1ml with precision, put it in a 10ml measuring bottle, dilute it to the scale with the mobile phase, shake well
.

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