一、化學(xué)名:檸檬酸氫二銨,枸櫞酸氫二銨
二、分子式:C6H14N2O7
三、分子量:226.192
四、CAS:3012-65-5
五、性能:無(wú)色細小結晶或白色顆粒。密度為1.48g/mL,熔點(diǎn)185 oC,沸點(diǎn)100oC,溶于水,微溶于乙醇。
六、用途:分析試劑,如作配合萃取劑、配合掩蔽劑、緩沖劑。
七、包裝:內襯聚乙烯塑料袋,外套復合塑料編織袋包裝,每袋凈重25kg。
八、貯存與運輸:本品應貯存在干燥通風(fēng)清潔的庫房中,裝載運輸時(shí)要輕裝輕放,防止包裝破損,防止受潮、受熱,運輸過(guò)程中防止雨淋受潮,應與有毒物品隔離。
質(zhì)量指標 | Specification | FCC VII | HG/T3497-2000 | |
分析純 | 化學(xué)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.