Basf Se Corporation

Stefan Gropp

Alexander Hauk

Robert Heinz

Otto Machhammer

Volker Maywald

Roland Goetz

Norbert Guentherberg

Anna Valeska Lohmann

Gerd Diebold

Gerhard Laux

Dieter Feuerstein

Robert Rühle

Rüdiger Schmitt

Daniel Saelinger

Timo Frassetto

Jörg Heilek

Sebastian Wloch

Robert Lenz

Daniela Rieck

Florian Weigel

The present invention relates to a process to produce highly purified crystalline 1-(4-chlorophenyl)pyrazol-3-ol (I).

Process for the purification of 1-(4-chlorophenyl)pyrazol-3-ol

The invention relates to a method for producing and using a solid sodium diformate having a high formic acid content, to the use thereof in animal foods in the form of an acidifier, preservatives, ensilage auxiliary agents, fertilizers, and a growth and productivity-stimulating agent and the inventive animal food additives containing sodium diformate.

Sodium diformate production and use

The present invention relates to propionic acid-comprising compositions in solid and essentially pure form comprising at least one compound according to formula (I)(M)(H)(CHCHC(O)O)&#x2003;&#x2003;(I),where

Production of acid propionates

The present invention relates to a process for producing a solid sodium diformate preparation having a formic acid content of at least 35% by weight based on the total weight of sodium diformate preparation, in which, at elevated temperature, an aqueous solution (E) is produced which comprises sodium formate and formic acid in a molar ratio of HCOOH:HCOONa of greater than 1.5:1 and which has a molar ratio of HCOOH:HO of at least 1.1:1, the aqueous solution (E) is brought to crystallization to obtain a solid phase (F) and a mother liquor (G), and the solid phase (F) is separated off from the mother liquor (G),

Production of sodium diformate

The calculation of the above balance shows that the division of stream () into the streams () and () used here leads to the fact that in the neutralization stage no excess sodium formate is produced, so that any ejection can be omitted. Furthermore, the water content of the stream () comprising sodium formate recirculated to the first crystallization stage in this case can be set to a very low value.

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Ludwigshafen, Germany

Stefan Gropp