磷酸氫鈣(無水)

2016/6/12 閱讀次數:3521
磷酸氫鈣(無水)分子式:無水物CaHPO4 
磷酸氫鈣(無水)分子量:無水物136.06
磷酸氫鈣(無水)性 能:白色單斜結晶粉末,無臭無味,溶于稀鹽酸、硝酸、醋酸、微溶于水,不溶于乙醇。相對密度為2.32。空氣中穩定。75℃開始失水生成無水磷酸氫鈣。
磷酸氫鈣(無水)用 途:食品工業中作疏松劑。面團改良劑、緩沖劑、營養增補劑、乳化劑、穩定劑等。如作面粉、蛋糕、糕點、焙制品的膨松劑,復配型面包改質劑,油炸食品改質劑。亦用于餅干、奶粉、冷飲、冰淇淋粉。作營養增補劑或品質改良劑.
磷酸氫鈣(無水)包 裝:外袋為編織袋或牛皮紙袋,內襯聚乙烯塑料袋,每袋凈重25kg。





指標名稱 Name of index   FCC-V E 341 (ii) USP-30
外觀 Description   White crystal or granular, granular powder or powder  
含量 Assay % 97.0-105.0 98.0--102.0(200℃, 3h) 98.0-100.5
P2O5含量(無水物) P2O5 Content(Anhydrous basis) % -- 50.0--52.5 --
鑒別試驗 Identification   Pass test Pass test Pass test
溶解測試 Solubility tests   -- Sparingly soluble in water. Insoluble in ethanol --
氟化物 Fluoride, ≤mg/kg 50 50(expressed as fluorine) 50
灼燒失重 Loss on ignition, (After ignition at 800℃±25℃ for 30minutes) % 7.0-8.5 (Anhydrous) 24.5-26.5 (Dihydrate) ≤8.5 (Anhydrous) ≤26.5 (Dihydrate) 6.6-8.5 (Anhydrous) 24.5-26.5 (Dihydrate)
碳酸鹽 Carbonate   -- -- Pass test
Chloride ≤% -- -- 0.25
硫酸鹽 Sulphate ≤% -- -- 0.5
Arsenic ≤mg/kg 3 1 3
Barium   -- -- Pass test
重金屬 Heavy metals ≤mg/kg -- -- 30
酸不溶物 Acid-insoluble substance ≤% -- -- 0.2
有機揮發雜質 Organic volatile impurities   -- -- Pass test
Lead ≤mg/kg 2 1 --
Cadmium ≤mg/kg -- 1 --
Mercury ≤mg/kg -- 1 --
Aluminium   -- Not more than 100 mg/kg for the anhydrous form and not more than 80 mg/kg for the dihydrated form (only if added to food for infants and young children) Not more than 600 mg/kg for the anhydrous form and not more than 500 mg/kg for the dihydrated form (for all uses except food for infants and young children). This applies until 31 March 2015. Not more than 200 mg/kg for the anhydrous form and the dihydrated form (for all uses except food for infants and young children). This applies from 1 April 2015. -

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