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一(yi)、化學名：檸檬酸氫二銨，枸櫞酸氫二銨
二、分子式：C6H14N2O7
三(san)、分子量：226.192
四、CAS：3012-65-5
五、性能：無色(se)細(xi)小結晶或白色(se)顆粒。密(mi)度為1.48g/mL，熔(rong)點(dian)185 oC，沸點(dian)100oC,溶于(yu)水，微溶于(yu)乙(yi)醇(chun)。
六(liu)、用(yong)途：分析試劑，如作(zuo)配合萃取劑、配合掩蔽劑、緩(huan)沖劑。
七(qi)、包裝：內襯(chen)聚乙烯塑(su)(su)料(liao)(liao)袋，外套復合塑(su)(su)料(liao)(liao)編(bian)織袋包裝，每袋凈重(zhong)25kg。
八、貯存與運(yun)輸：本品應貯存在干燥通風清潔的庫房中，裝(zhuang)(zhuang)載運(yun)輸時要輕(qing)裝(zhuang)(zhuang)輕(qing)放，防止包裝(zhuang)(zhuang)破損，防止受(shou)潮(chao)、受(shou)熱(re)，運(yun)輸過程(cheng)中防止雨淋受(shou)潮(chao)，應與有毒物(wu)品隔(ge)離。
| 質量指標 | Specification | FCC VII | HG/T3497-2000 | |
| 分析純 | 化學純 | |||
| 含量（以干基計），w/% ≥ | Content (On dry basis),w/% ≥ | 98.0 | 99.0 | 98.0 |
| 氯化物（以Cl計），mg/kg ≤ | Chloride (Cl),mg/kg ≤ | 10 | 10 | 20 |
| 鐵（Fe），mg/kg ≤ | Iron (Fe),mg/kg ≤ | 10 | 5 | 10 |
| 鉛（Pb），mg/kg ≤ | Lead (Pb),mg/kg ≤ | 2 | ——— | ——— |
| pH（50g/L溶液，25℃） | pH (50g/L solution,25℃) | 4.5-5.5 | ——— | ——— |
| 水不溶物，w/% ≤ | Water insoluble,w/% ≤ | ——— | 0.005 | 0.01 |
| 灼燒殘渣（以硫酸鹽計），w/% ≤ | Ignition Residue (as SO4),w/% ≤ | ——— | 0.03 | 0.06 |
| 硫化合物（以SO4計），w/% ≤ | Sulfur compound(as SO4),w/% ≤ | 0.005 | 0.005 | 0.01 |
| 磷化合物（以PO4計），w/% ≤ | Phosphorus compound(as PO4),w/%≤ | ——— | 0.002 | 0.005 |
| 草酸鹽（C2O4），w/% ≤ | Oxalate(C2O4),w/% ≤ | ——— | 合格 | |
| 鈣（Ca），w/% ≤ | Calcium (Ca),w/% ≤ | ——— | 0.005 | 0.02 |
| 澄清度試驗 | Clarity test | ——— | 合格 | 合格 |
1、 Chemical Name: Ammonium Citrate Dibasic
2、Molecular Formula: C6H14N2O7
3、Molecular Weight: 226.192
4、CAS: 3012-65-5
5、Character: Colorless fine crystalline or white particles. Density 1.48g/mL. Melting point185 °C, Boiling point100 °C. Soluble in water and soluble in alcohol slightiy.
6、Usage: Analytical reagent, synergetic solvent extraction reagent, masking reagent, buffering reagent.
7、Packing: It is packed with polyethylene bag as inner layer, and a compound plastic woven bag as outer layer. The net weight of each bag is 25kg.
8、Storage & Transportation: It should be stored in a dry and ventilative warehouse, kept away from heat and moisture during transportation, unloaded with care so as to avoid damage. Furthermore, it must be stored separately from poisonous substances.