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  • 柠檬酸(一水)
  • CAS编号:5949-29-1
  • 中文别名:柠檬酸单水合物; 柠檬酸,一水; 柠檬酸一水
  • 英文名称:Citric acid monohydrate
  • 分子式:C6H10O8
  • 分子量:210.1388
  • 0个化合物
货号 名称 规格 包装 单价(元) 优惠(元) 库存 数量 操作
R786991 柠檬酸(一水) AR 500g ¥ 27.00 ¥ 22.95 >10 -+ 加入购物车
R955784 柠檬酸(一水) CP 500g ¥ 20.00 ¥ 17 >10 -+ 加入购物车
R529272 柠檬酸(一水) GR 500g ¥ 48.00 ¥ 40.8 >10 -+ 加入购物车
R805379 柠檬酸(一水) ≥99.9998% (metals basis) 5g ¥ 79.00 ¥ 67.15 >10 -+ 加入购物车
R505454 柠檬酸(一水) ≥99.9998% (metals basis) 25g ¥ 266.00 ¥ 226.1 >10 -+ 加入购物车
R594892 柠檬酸(一水) BR 500g ¥ 36.00 ¥ 30.6 >10 -+ 加入购物车
R362145 柠檬酸(一水) GCS 5g ¥ 55.00 ¥ 46.75 >10 -+ 加入购物车
R633965 柠檬酸(一水) ACS 500g ¥ 149.00 ¥ 126.65 >10 -+ 加入购物车
R665973 柠檬酸(一水) 99.995% metals basis 500g ¥ 988.00 ¥ 839.8 >10 -+ 加入购物车
化学性质

无色透明斜方形结晶或白色颗粒,无气味,味酸,在干燥空气中或加热至40-50℃成无水物,在潮湿空气中微有潮解性,75℃时变软,100℃时熔融,易溶于水,能溶于醇
密度:1.54  
熔点: 135-152℃
闪点: 173.9℃ 

质量标准

GB/T 9855-88
项目Item                                                            优级纯     分析纯   化学纯
                                                                              (GR)       (AR)     (CP)
含量(C6H8O7·H2O)Assay,%                                  ≥ 99.8     99.5    99.0
澄清度试验Clarity                                                 合格     合格    合格
水不溶物Insoluble matter in water,%                     ≤ 0.002    0.005   0.01
灼烧残渣(以硫酸盐计)Ignition residue,%               ≤ 0.01     0.02    0.07
氯化物(Cl)Chloride,%                                          ≤ 0.0005   0.0005  0.005
硫酸盐(SO4)Sulfate,%                                         ≤ 0.002    0.005   0.02
磷酸盐(PO4)Phosphate,%                                   ≤ 0.001    0.001   0.005
草酸盐(C2O4)Oxalate                                          ≤ 0.05     0.05     --
钙(Ca)Calcium,%                                                ≤ 0.002    0.005   0.02
铁(Fe)Iron,%                                                      ≤ 0.0003   0.0005  0.001
铜(Cu)Copper,%                                                ≤ 0.0005   0.0005   --
铅(Pb)Lead,%                                                    ≤ 0.0005   0.0005  0.001
易碳化物质Readily earbonizable substances    合格            合格    --


项目                                                                   ACS级     
                                                                           (ACS) 
含量Assay (C6H8O7•H2O)                             99.0-102.0% 
不溶物Insoluble Matter                                  ≤ 0.005% 
灼烧残渣Residue after Ignition                     ≤ 0.02% 
氯Chloride (Cl)                                              ≤ 0.001% 
草酸盐试验Oxalate (C2O4)                           To pass test (limit about 0.05%) 
磷酸盐Phosphate (PO4)                              ≤0.001% 
硫酸盐Sulfur Compounds (as SO4)             ≤0.002% 
铁Iron (Fe)                                                   ≤3 ppm 
铅Lead (Pb)                                                 ≤2 ppm 
易碳化物质Substances Carbonizable by Hot Sulfuric Acid (Tartrates, etc.) 
                                                  To pass test 


99.9998% metals basis:


含量assay                         ≥99.5% (T) 
纯度Purity                        ≥99.9998% metals basis
total impurities 
total nitrogen (N)                ≤5 ppm  
  acetate                         ≤5000 ppb  
  formia te                       ≤5000 ppb  
  glycolate                       ≤5000 ppb  
pKa                               (1) 3.13, (2) 4.76, (3) 6.4 
anion traces 
  bromide (Br-):                  ≤2000 ppb 
  chloride (Cl-):                 ≤10000 ppb 
  fluoride (F-):                  ≥2000 ppb 
  iodide (I-):                    ≤2000 ppb 
  nitrate (NO3-):                 ≤10000 ppb 
  nitrite (NO2-):                 ≤2000 ppb 
  oxalate (C2O42-):               ≤5000 ppb 
  phosphate (PO43-):              ≤2000 ppb 
  sulfate (SO42-):                ≤10000 ppb 
  tartrate (C4H4O62-):            ≤0.2% 
cation traces 
  Ag:                             ≤0.01 ppm 
  Al:                             ≤0.05 ppm 
  As:                             ≤0.01 ppm 
  Au:                             ≤0.01 ppm 
  Ba:                             ≤0.05 ppm 
  Be:                             ≤0.01 ppm 
  Bi:                             ≤0.01 ppm 
  Ca:                             ≤0.1 ppm 
  Cd:                             ≤0.01 ppm 
  Ce:                             ≤0.01 ppm 
  Co:                             ≤0.01 ppm 
  Cr:                             ≤0.05 ppm 
  Cs:                             ≤0.01 ppm 
  Cu:                             ≤0.01 ppm 
  Dy:                             ≤0.01 ppm 
  Er:                             ≤0.01 ppm 
  Eu:                             ≤0.01 ppm 
  Fe:                             ≤0.1 ppm 
  Ga:                             ≤0.01 ppm 
  Gd:                             ≤0.01 ppm 
  Ge:                             ≤0.01 ppm 
  Hf:                             ≤0.01 ppm 
  Hg:                             ≤0.005 ppm 
  Ho:                             ≤0.01 ppm 
  In:                             ≤0.01 ppm 
  Ir:                             ≤0.01 ppm 
  K:                             ≤0.1 ppm 
  La:                             ≤0.01 ppm 
  Li:                             ≤0.01 ppm 
  Lu:                             ≤0.01 ppm 
  Mg:                             ≤0.05 ppm 
  Mn:                             ≤0.01 ppm 
  Mo:                             ≤0.01 ppm 
  Na:                             ≤2 ppm 
  Nb:                             ≤0.01 ppm 
  Nd:                             ≤0.01 ppm 
  Ni:                             ≤0.01 ppm 
  Os:                             ≤0.01 ppm 
  Pb:                             ≤0.01 ppm 
  Pd:                             ≤0.01 ppm 
  Pr:                             ≤0.01 ppm 
  Pt:                             ≤0.01 ppm 
  Rb:                             ≤0.01 ppm 
  Re:                             ≤0.01 ppm 
  Rh:                             ≤0.01 ppm 
  Ru:                             ≤0.01 ppm 
  Sb:                             ≤0.01 ppm 
  Sc:                             ≤0.05 ppm 
  Se:                             ≤0.05 ppm 
  Sm:                             ≤0.01 ppm 
  Sn:                             ≤0.01 ppm 
  Sr:                             ≤0.01 ppm 
  Ta:                             ≤0.01 ppm 
  Tb:                             ≤0.01 ppm 
  Te:                             ≤0.01 ppm 
  Th:                             ≤0.01 ppm 
  Ti:                             ≤0.05 ppm 
  Tl:                             ≤0.01 ppm 
  Tm:                             ≤0.01 ppm 
  U:                              ≤0.01 ppm 
  V:                              ≤0.01 ppm 
  W:                              ≤0.01 ppm 
  Y:                              ≤0.01 ppm 
  Yb:                             ≤0.01 ppm 
  Zn:                             ≤0.01 ppm 
  Zr:                             ≤0.01 ppm 


99.995% metals basis:


外观Appearance                          colorless crystal
红外光谱Infrared spectrometry           Conforms to Structure 
纯度Purity                                      ≥99.995% Based on Trace Metals Impurities
滴定含量assay by titation               99.5-100.5%
总痕量金属杂质total metallic impurities ≤50ppm by ICP Atomic emission


危险性质

危险品标志      F,Xi
危险类别码    11-36-66-67-41-36/37/38-37/38
安全说明         9-16-26-37/39-36/37/39
危险品运输编号  UN 1090 3/PG 2
WGK Germany    1
RTECS        AL3150000
海关编码     29181400

用途及存储

主要用于香料或作为饮料的酸化剂,在食品和医学上用作多价螯合剂,也是化学中间体。

储于阴凉、干燥处,远离火种、热源,防止阳光直射。