US2848493A
(en)
|
|
Process for synthesis of urea
|
CN102099295A
(zh)
|
|
抗结块盐组合物及其制备方法与用途
|
BE457685A
(instruction)
|
|
|
US4228144A
(en)
|
|
Process for the preparation of anhydrous magnesium chloride having a high degree of purity
|
US4406869A
(en)
|
|
Process for producing anhydrous sodium carbonate crystal
|
PL132177B1
(en)
|
|
Method of manufacture of urea
|
CH289681A
(fr)
|
|
Procédé de préparation de carbonate de guanidine.
|
EP0494933A1
(en)
|
|
Tetrathiocarbonate process
|
US1186367A
(en)
|
|
Process of fixation of nitrogen.
|
US1573732A
(en)
|
|
Method of making calcium cyanide and product thereof
|
US5993771A
(en)
|
|
Tetrathiocarbonate continuous process
|
US2231898A
(en)
|
|
Recovery of acids
|
US1295262A
(en)
|
|
Process of producing ammonia from alkali cyanid.
|
CH254244A
(fr)
|
|
Procédé pour la fabrication d'engrais complexes, granulés.
|
US1200334A
(en)
|
|
Process for the production of nitric acid from nitrous gases.
|
BE426745A
(instruction)
|
|
|
Grove, Jr et al.
|
|
Reaction of Chlorinated Urea Products with Ammonia and Ethylamine |
BE404674A
(instruction)
|
|
|
CH266092A
(fr)
|
|
Procédé de préparation de sels de guanidine.
|
BE500312A
(instruction)
|
|
|
BE434943A
(instruction)
|
|
|
BE350949A
(instruction)
|
|
|
CH205886A
(fr)
|
|
Procédé de fabrication de nitrate de sodium avec production concomitante de chlore.
|
BE403304A
(instruction)
|
|
|
JPS5879805A
(ja)
|
|
亜二チオン酸塩の製造方法
|