Oxalic acid dihydrate

MDL：
MFCD00149102

Molecular Formula：
C2H2O4·2H2O；HO2CCO2H·2H2O

Molecular Weight：
126.07

Alias：
乙二酸,蓚酸 Ethanedioic acid

Product order：

Name	Specifications	Packing	Price	Delivery
Oxalic acid dihydrate	AR	500g	RMB 18.7	现货
Oxalic acid dihydrate	CP	500g	RMB 16.5	Consulting service
Oxalic acid dihydrate	GR	500g	RMB 25.3	Consulting service
Oxalic acid dihydrate	GR	5Kg	RMB 231	Consulting service
Oxalic acid dihydrate	SP	25g	RMB 71.5	Consulting service
Oxalic acid dihydrate	4N	25g	RMB 71.5	Consulting service
Oxalic acid dihydrate	ACS	500g	RMB 38.5	Consulting service
Oxalic acid dihydrate	GCS，≥99.6%	5g	RMB 28.6	Consulting service
Oxalic acid dihydrate	≥99.998% (metals basis)	5g	RMB 110	Consulting service
Oxalic acid dihydrate	≥99.998% (metals basis)	25g	RMB 396	Consulting service

Character：
无色单斜片状或棱柱体结晶或白色粉末。在温热、干燥空气中风化，可溶于水及乙醇。无气味。150-160℃升华。在高热干燥空气中能风化。1g溶于7ml水、2ml沸水、2.5ml乙醇、1.8ml沸乙醇、 100ml乙醚、5.5ml甘油，不溶于苯、氯仿和石油醚。0.1mol/L溶液的pH值为1.3。低毒，半数致死量（兔，经皮）2000mg/kg。
密度：1.653
熔点：101-102℃
沸点：86.9℃
折光率n20/D：1.45560

Quality Standard：
GB/T 9855-88
项目Item                                         优级纯   分析纯   化学纯
                                                  (GR)     (AR)    (CP)
含量(C2H2O4·
2H2O)Assay,%                                    ≥99.8     99.5     99.5
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     0.05
氯化钠(Cl)Chloride,%                            ≤0.0005   0.002    0.005
硫酸盐(SO4)Sulfate,%                            ≤0.001    0.002    0.005
总氮量(N)Total nitrogen,%                       ≤0.001    0.002    0.005
钙(Ca)Calcium,%                                 ≤0.001    0.003    0.005
铁(Fe)Iron,%                                    ≤0.0002   0.0005   0.002
重金属(以Pb计)Heavy metals,%                    ≤0.0002   0.0004   0.001
易碳化物质Readily carboniz-able substance          合格     合格     合格

ACS级
项目名称Item                                              ACS Grade
含量(H2C2O4·2H2O)Assay                                    99.5-102.5%
易炭化物质Substances darkened by hot sulfuric acid         Passes test
水不溶物Insoluble matter                                   ≤0.005%
灼烧残渣Residue after ignition                             ≤0.01%
氯化物(Cl)Chloride(Cl)                                     ≤0.002%
硫酸盐(SO4)Sulfate                                         ≤0.005%
钙(Ca)Calcium(Ca)                                          ≤0.001%
氮化合物(以N计)Nitrogen compounds(as N)                    ≤0.001%
重金属(以Pb计)Heavy metals(as Pb)                          ≤5ppm
铁(Fe)Iron(Fe)                                             ≤2ppm

≥99.9999% (metals basis)：

外观Appearance                          白色粉末或结晶
纯度Purity                              ≥99.9999% Based On Trace Metals Analysis
总氮total nitrogen                      ≤10 ppm
熔点mp                                  104-106 °C
anion traces by
  氯chloride (Cl-):                     ≤5000 ppb
  磷酸根phosphate (PO43-):              ≤500 ppb
  硫酸根sulfate (SO42-):                ≤2000 ppb
cation traces
  Ag:                                   ≤0.01 ppm
  Al:                                   ≤0.02 ppm
  As:                                   ≤0.01 ppm
  Au:                                   ≤0.001 ppm
  Ba:                                   ≤0.1 ppm
  Be:                                   ≤0.001 ppm
  Bi:                                   ≤0.001 ppm
  Ca:                                   ≤0.1 ppm
  Cd:                                   ≤0.05 ppm
  Ce:                                   ≤0.005 ppm
  Co:                                   ≤0.005 ppm
  Cr:                                   ≤0.01 ppm
  Cs:                                   ≤0.01 ppm
  Cu:                                   ≤0.005 ppm
  Dy:                                   ≤0.005 ppm
  Er:                                   ≤0.005 ppm
  Eu:                                   ≤0.005 ppm
  Fe:                                   ≤0.5 ppm
  Ga:                                   ≤0.001 ppm
  Gd:                                   ≤0.005 ppm
  Ge:                                   ≤0.005 ppm
  Hf:                                   ≤0.005 ppm
  Hg:                                   ≤0.005 ppm
  Ho:                                   ≤0.005 ppm
  In:                                   ≤0.001 ppm
  Ir:                                   ≤0.005 ppm
  K:                                    ≤0.2 ppm
  La:                                   ≤0.005 ppm
  Li:                                   ≤0.005 ppm
  Lu:                                   ≤0.005 ppm
  Mg:                                   ≤0.02 ppm
  Mn:                                   ≤0.005 ppm
  Mo:                                   ≤0.005 ppm
  Na:                                   ≤0.1 ppm
  Nb:                                   ≤0.005 ppm
  Nd:                                   ≤0.005 ppm
  Ni:                                   ≤0.01 ppm
  Os:                                   ≤0.01 ppm
  Pb:                                   ≤0.01 ppm
  Pd:                                   ≤0.01 ppm
  Pr:                                   ≤0.005 ppm
  Pt:                                   ≤0.05 ppm
  Rb:                                   ≤0.01 ppm
  Re:                                   ≤0.005 ppm
  Rh:                                   ≤0.005 ppm
  Ru:                                   ≤0.005 ppm
  Sb:                                   ≤0.001 ppm
  Sc:                                   ≤0.05 ppm
  Se:                                   ≤0.01 ppm
  Sm:                                   ≤0.005 ppm
  Sn:                                   ≤0.005 ppm
  Sr:                                   ≤0.1 ppm
  Ta:                                   ≤0.01 ppm
  Tb:                                   ≤0.005 ppm
  Te:                                   ≤0.005 ppm
  Th:                                   ≤0.005 ppm
  Ti:                                   ≤0.02 ppm
  Tl:                                   ≤0.001 ppm
  Tm:                                   ≤0.005 ppm
  U:                                    ≤0.001 ppm
  V:                                    ≤0.01 ppm
  W:                                    ≤0.005 ppm
  Y:                                    ≤0.005 ppm
  Yb:                                   ≤0.005 ppm
  Zn:                                   ≤0.02 ppm
  Zr:                                   ≤0.1 ppm 

Storage：
密封保存