| 摘要 |
1431288 Ammonium urate READING & BATES PRODUCT DEVELOPMENT CO EL PASO SOUTHERN CO and BOEING ENVIRONMENTAL PRODUCTS Inc 29 Aug 1973 [13 Sept 1972] 40709/73 Heading C2C [Also in Divisions Cl and A2] In an example ammonium urate is obtained by mixing poultry faeces with triethylamine as a dewatering agent, reducing the temperature to 10‹ C., vacuum filtering the slurry obtained, increasing the temperature of the filtrate to room temperature to obtain two phases, separating the phases and precipitating ammonium urate from the aqueous phase by reaction with ammonium phosphate. |
