3 results about "Monosodium citrate" patented technology

This invention discloses a copper ion scavenging agent suitable for a wide pH range, its preparation method, and its application. The scavenging agent comprises the following components by mass: 10-30 parts trithiocarbonate, 5-20 parts N,N-dimethylaminodithiocarbamate, and 1-5 parts sodium citrate. The preparation method is as follows: (1) Add water to a sodium citrate solution and stir to prepare a buffer solution A; (2) Add trithiocarbonate and N,N-dimethylaminodithiocarbamate to buffer solution A, stir until completely dissolved, and filter to obtain the final product. This invention has the advantages of a wider pH range, copper removal effect that varies with water quality, stable copper removal effect, fast reaction speed, and rapid floc settling. After treatment, the concentration of each copper ion is less than 0.1 mg / L, the iron content is less than 0.0001%, and the lead content is less than 0.0001%, meeting the environmental emission requirements.

The invention relates to the field of preparation of calcium dobesilate, and particularly discloses a preparation method of calcium dobesilate, which comprises the following steps: a, adding anhydrous sodium sulfite into water for dissolving to form an anhydrous sodium sulfite aqueous solution; b, sieving and refining mannitol, and then stirring and mixing the mannitol with the anhydrous sodium sulfite aqueous solution formed in the step a to form a mixture; c, drying the mixture obtained in the step b until the water content is less than 1%, and finishing the granules to obtain mannitol granules; d, uniformly mixing the calcium dobesilate, the mannitol particles and the monosodium citrate lubricant according to the amount to obtain mixed particles; e, tabletting the mixed particles obtained in the step d; the preparation method of the calcium dobesilate has the beneficial effect that the quality of the calcium dobesilate can be improved.

Injection molding compound (2) comprising at least one polyester and a gas-releasing blowing agent mixture comprising: - monosodium citrate and - MgCO3 and / or CaCO3.