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草酸二水合物
英文名:Oxalic acid dihydrate
Cas号:6153-56-6
Cas号:6153-56-6
检测信息查询
别 名 | 乙二酸,蓚酸;草酸(二水) |
Cas号 | 6153-56-6 |
M D L | MFCD00149102 |
分子式 | C2H2O4·2H2O;HO2CCO2H·2H2O |
分子量 | 126.07 |
产品参数 | 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 |
性状 | 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 |
贮存 | 密封保存 |