Molecular formula :C7H6O6S, Molecular weight =218.18
Physical and chemical properties
This product is a white crystalline or crystalline powder and is hygroscopic. The melting point is 120℃. It is readily soluble in water and ethanol, and soluble in ether. It turns into powder when it meets iron
Red in color, it decomposes into sulfuric acid and salicylic acid at high temperatures.
Quality standard
Q/3656-2010
Appearance:
White crystalline powder
Total acidity :99.0- 105.0%
Sulfate :≤5%
Weight loss on drying :≤22%
Solubility (20% solution clarification): Clear and transparent
Usage: It is used as a pharmaceutical intermediate for the production of doxycycline and rare earth amycin in the pharmaceutical industry, and can also serve as an intermediate for dyes and surfactants
It is used for the determination of total protein in urine and as a chelating agent for metal ions. Its 0.2M aqueous solution is used for uranium, trivalent iron ions and fluoride ions.
Indirect photometric determination reagents. Organic catalysts, lubricating oil additives.
Packaging: Kraft paper bag, plastic bag or cardboard drum, net weight 25kg.
Store in a sealed container in a dry place.
