Mono-amitraz hydrochloride soluble powder and its preparing method

Mono-amitraz hydrochloride soluble powder and its preparing method

  • CN 100,401,890 C
  • Filed: 02/07/2005
  • Issued: 07/16/2008
  • Est. Priority Date: 12/15/2004
  • Status: Active Grant
First Claim
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1. mono-amitraz hydrochloride soluble powder is characterized in that it is made by following method:

  • (1) weight percent concentration is the concentrate of 25% mono-amitraz hydrochloride aqua reduction vaporization simmer down to weight percent concentration 40-60%, and concentrated condition is;

    vacuum 0.05-0.09MPa, temperature 60-90 ℃

    ;

    (2) in the concentrate that step (1) obtains, add sodium hydroxide, make the pH value of concentrate be 4.5-5.2;

    (3) salting-out agents of the 10-15% of adding concentrate weight in the concentrate that step (2) obtains stir, and-5~

    5 ℃

    of coolings down, mono-amitraz hydrochloride is separated out in crystallization, filters to obtain mono-amitraz hydrochloride pulvis semi-finished product;

    (4) the mono-amitraz hydrochloride pulvis semi-finished product that step (3) is obtained obtain mono-amitraz hydrochloride pulvis finished product at 30-70 ℃

    of following drying under reduced pressure;

    (5) add organic amine in the pulvis finished product that step (4) obtains, the addition of organic amine is the 2-5% of pulvis finished weight, mixes to obtain mono-amitraz hydrochloride soluble powder of the present invention.

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