Abstract: <SPAN lang=EN-US style="FONT-SIZE: 10.5pt; FONT-FAMILY: " mso-bidi-language: ZH-CN; mso-fareast-language: EN-US; mso-ansi-language: 1.0pt; mso-font-kerning: Roman?; New Times 宋体? mso-fareast-font-family: AR-SA; 12.0pt; mso-bidi-font-size:>Magnesium phosphate is an important product of fine phosphates which was widely applied in food and pharmaceutical industries.Generally the researches mainly focussed on crystal magnesium phosphate (magnesium phosphate octahydrate) products at home and abroad,where as the studies on preparation methods of anhydrous magnesium phosphate were less.Through experiments,anhydrous magnesium phosphate was synthesized by high-temperature one-step solid-state process with phosphoric acid and magnesium carbonate as raw materials.Results showed that the quality of the prepared product could met the standard demands of food-grade magnesium phosphate in American Food Chemicals Codex (FCC2000),when amount-of-substance ratio of MgO to P<SUB>2</SUB>O<SUB>5</SUB> was 3.0,synthesis temperature was 1 100</SPAN><SPAN style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-bidi-font-size: 12.0pt; mso-ascii-font-family: " AR-SA? mso-bidi-language: ZH-CN; mso-fareast-language: EN-US; mso-ansi-language: 1.0pt; mso-font-kerning: Roman?; New ?Times mso-bidi-font-family: mso-hansi-font-family: Times>～</SPAN><SPAN lang=EN-US style="FONT-SIZE: 10.5pt; FONT-FAMILY: " mso-bidi-language: ZH-CN; mso-fareast-language: EN-US; mso-ansi-language: 1.0pt; mso-font-kerning: Roman?; New Times 宋体? mso-fareast-font-family: AR-SA; 12.0pt; mso-bidi-font-size:>1 250 </SPAN><SPAN style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-bidi-font-size: 12.0pt; mso-ascii-font-family: " AR-SA? mso-bidi-language: ZH-CN; mso-fareast-language: EN-US; mso-ansi-language: 1.0pt; mso-font-kerning: Roman?; New ?Times mso-bidi-font-family: mso-hansi-font-family: Times>℃</SPAN><SPAN lang=EN-US style="FONT-SIZE: 10.5pt; FONT-FAMILY: " mso-bidi-language: ZH-CN; mso-fareast-language: EN-US; mso-ansi-language: 1.0pt; mso-font-kerning: Roman?; New Times 宋体? mso-fareast-font-family: AR-SA; 12.0pt; mso-bidi-font-size:>,</SPAN><SPAN style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-bidi-font-size: 12.0pt; mso-ascii-font-family: " AR-SA? mso-bidi-language: ZH-CN; mso-fareast-language: EN-US; mso-ansi-language: 1.0pt; mso-font-kerning: Roman?; New ?Times mso-bidi-font-family: mso-hansi-font-family: Times></SPAN><SPAN lang=EN-US style="FONT-SIZE: 10.5pt; FONT-FAMILY: " mso-bidi-language: ZH-CN; mso-fareast-language: EN-US; mso-ansi-language: 1.0pt; mso-font-kerning: Roman?; New Times 宋体? mso-fareast-font-family: AR-SA; 12.0pt; mso-bidi-font-size:>and reaction time was 30</SPAN><SPAN style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-bidi-font-size: 12.0pt; mso-ascii-font-family: " AR-SA? mso-bidi-language: ZH-CN; mso-fareast-language: EN-US; mso-ansi-language: 1.0pt; mso-font-kerning: Roman?; New ?Times mso-bidi-font-family: mso-hansi-font-family: Times>～</SPAN><SPAN lang=EN-US style="FONT-SIZE: 10.5pt; FONT-FAMILY: " mso-bidi-language: ZH-CN; mso-fareast-language: EN-US; mso-ansi-language: 1.0pt; mso-font-kerning: Roman?; New Times 宋体? mso-fareast-font-family: AR-SA; 12.0pt; mso-bidi-font-size:>45 min. </SPAN>