柠檬酸(一水),5949-29-1,Citric acid monohydrate密封保存。用途 检定铋、亚硝酸盐、氧和水,测定铝、铜、汞、镍、氧和钍、用作多价螯合剂,除去微量金属,配制缓冲溶液,测定血钾。
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Citric acid monohydrate |
Cas 号: | 【5949-29-1】 | M D L: | --MFCD00149972 |
分子式: | C6H8O7·H2O; HOC(COOH)(CH2COOH)2·H2O | 分子量: | 192.12 |
别 名: | 枸橼酸,2-羟基丙羧酸 | | |
柠檬酸(一水),5949-29-1,Citric acid monohydrate分子结构式: | |
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订货信息: | |
| 货号 | 品名 | 规格 | 包装 | 单价 | | 柠檬酸(一水) | ≥99.9998% (metals basis) | 25g | 299元 | | 柠檬酸(一水) | ≥99.9998% (metals basis) | 5g | 98元 | | 柠檬酸(一水) | Ph. Eur., BP, USP, E330, 99.5-100.5% | 2.5kg | 398元 | | 柠檬酸(一水) | Ph. Eur., BP, USP, E330, 99.5-100.5% | 1kg | 98元 | | 柠檬酸 | ACS | 500g | 72元 | | 柠檬酸 | GR | 500g | 68元 | | 柠檬酸 | CP | 500g | 28元 | | 柠檬酸 | GCS | 5g | 50元 | | 柠檬酸 | AR | 500g | 28元 | |
性 状: | 柠檬酸(一水),5949-29-1,Citric acid monohydrate 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: | 柠檬酸(一水),5949-29-1,Citric acid monohydrate 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 品级Grade 药典级 (Ph. Eur., BP, USP, E330) 含量assay 99.5-100.5% (based on anhydrous substance) 红外光谱鉴别Infrared spectrometry Conforms residual solvents, complies heavy metals (as Pb) ≤0.0005% water 7.5-8.8% (Karl Fischer) ign. residue ≤0.05% (as SO4) pKa (1) 3.13, (2) 4.76, (3) 6.4 痕量阴离子anion traces by ICP Atomic emission and AAS chloride (Cl-): ≤50 ppm oxalate (as oxalic acid): ≤100 ppm sulfate (SO42-): ≤100 ppm 痕量阳离子cation traces by ICP Atomic emission Al: ≤0.2 ppm As: ≤1 ppm Ca: ≤200 ppm Cu: ≤10 ppm Fe: ≤10 ppm Hg: ≤1 ppm Pb: ≤1 ppm Zn: ≤10 ppm suitability complies for appearance of solution complies for reaction against H2SO4 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 USP级 ASSAY (C6H8O7 ;ANHYD.,BASIS) 99.5 - 100.5 % CLARITY OF SOLUTION TO PASS TEST COLOR OF SOLUTION TO PASS TEST WATER 7.5 - 9.0 % RESIDUE ON IGNITION -- 0.1 % READILY CARBONIZABLE SUBSTANCES -- TO PASS TEST SULFATE -- 0.015 % HEAVY METALS -- 0.001 % |
贮 存: | 密封保存。 用途 检定铋、亚硝酸盐、氧和水,测定铝、铜、汞、镍、氧和钍、用作多价螯合剂,除去微量金属,配制缓冲溶液,测定血钾。 |
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