![]() ![]() The method for preparing chromium trichloride hexahydrate by utilizing sodium chromate is simple in technology and low in raw material cost and can replace a production method of chromium trichloride hexahydrate by virtue of chromic anhydride. The method for preparing chromium trichloride hexahydrate by utilizing sodium chromate comprises the following steps: putting a sodium chromate aqueous solution and a reducing agent in a reaction vessel, controlling temperature to be 115-125 DEG C and slowly dropwise adding hydrochloric acid while stirring after hydrochloric acid is added, firstly controlling temperature of a reaction solution to be 110-140 DEG C, carrying out reaction on sodium chromate, the reducing agent and hydrochloric acid for a first preset time period while stirring, then controlling the temperature of the reaction solution to be 80-100 DEG C, and curing the reaction solution reacted for the first time period for a second time period while stirring adding the cured reaction solution into an alkali solution, regulating pH value of the reaction solution to be 6.5-7.5, then filtering to obtain an intermediate product, washing the intermediate product, then adding hydrochloric acid, and carrying out reaction sequentially carrying out evaporation and concentration, crystallization at room temperature and crystal centrifugal drying on the reaction solution obtained in step three, so that chromium trichloride hexahydrate is obtained. The invention discloses a method for preparing chromium trichloride hexahydrate by utilizing sodium chromate. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.) Filing date Publication date Application filed by SICHUAN YINHE CHEMICAL CO Ltd filed Critical SICHUAN YINHE CHEMICAL CO Ltd Priority to CN201410433325.9A priority Critical patent/CN104192906B/en Publication of CN104192906A publication Critical patent/CN104192906A/en Application granted granted Critical Publication of CN104192906B publication Critical patent/CN104192906B/en Status Active legal-status Critical Current Anticipated expiration legal-status Critical Links Original Assignee SICHUAN YINHE CHEMICAL CO Ltd Priority date (The priority date is an assumption and is not a legal conclusion. ![]() Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.) ( en Inventor 李先荣 陈宁 董明甫 王方兵 黄玉西 袁小超 李逢彬 Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.) Granted Application number CN201410433325.9A Other languages Chinese ( zh) Google Patents Method for preparing chromium trichloride hexahydrate by utilizing sodium chromateĭownload PDF Info Publication number CN104192906A CN104192906A CN201410433325.9A CN201410433325A CN104192906A CN 104192906 A CN104192906 A CN 104192906A CN 201410433325 A CN201410433325 A CN 201410433325A CN 104192906 A CN104192906 A CN 104192906A Authority CN China Prior art keywords chromium hydrochloric acid sodium chromate chloride hexahydrate sodium Prior art date Legal status (The legal status is an assumption and is not a legal conclusion. Google Patents CN104192906A - Method for preparing chromium trichloride hexahydrate by utilizing sodium chromate ![]() CN104192906A - Method for preparing chromium trichloride hexahydrate by utilizing sodium chromate
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