• 柠檬酸,一水  [5949-29-1]

  • 英文名:Citric acid monohydrate
  • 别名:柠檬酸,一水 柠檬酸一水合物 2-羟基丙羧酸 枸橼酸
  • CAS号:5949-29-1 分子式:C6H8O7·H2O 分子量:210.14
P31949-500g 柠檬酸,一水  [5949-29-1] 99.5% 500g 85.00 促销价:63.75
P31944-500g 柠檬酸,一水  [5949-29-1] AR 500g 50.00 促销价:35.00
P31944-100g 柠檬酸,一水  [5949-29-1] AR 100g 23.00 促销价:16.10
P31947-500g 柠檬酸,一水  [5949-29-1] BR 500g 71.00 促销价:49.70
P31945-500g 柠檬酸,一水  [5949-29-1] GR 500g 58.00 促销价:40.60
P31945-100g 柠檬酸,一水  [5949-29-1] GR 100g 26.00 促销价:18.20
P31948-200mg 柠檬酸,一水  [5949-29-1] 分析标准品,HPLC≥98% 200mg 176.00 促销价:132.00
订货编号 商品名称 规格 包装 单价 促销价 会员价 数量
P31949-500g 柠檬酸,一水  [5949-29-1] 99.5% 500g 85.00 63.75 登录可见
P31949-500g 柠檬酸,一水  [5949-29-1] 99.5% 500g 85.00 促销价:63.75
P31944-500g 柠檬酸,一水  [5949-29-1] AR 500g 50.00 35.00 登录可见
P31944-500g 柠檬酸,一水  [5949-29-1] AR 500g 50.00 促销价:35.00
P31944-100g 柠檬酸,一水  [5949-29-1] AR 100g 23.00 16.10 登录可见
P31944-100g 柠檬酸,一水  [5949-29-1] AR 100g 23.00 促销价:16.10
P31947-500g 柠檬酸,一水  [5949-29-1] BR 500g 71.00 49.70 登录可见
P31947-500g 柠檬酸,一水  [5949-29-1] BR 500g 71.00 促销价:49.70
P31945-500g 柠檬酸,一水  [5949-29-1] GR 500g 58.00 40.60 登录可见
P31945-500g 柠檬酸,一水  [5949-29-1] GR 500g 58.00 促销价:40.60
P31945-100g 柠檬酸,一水  [5949-29-1] GR 100g 26.00 18.20 登录可见
P31945-100g 柠檬酸,一水  [5949-29-1] GR 100g 26.00 促销价:18.20
P31948-200mg 柠檬酸,一水  [5949-29-1] 分析标准品,HPLC≥98% 200mg 176.00 132.00 登录可见
P31948-200mg 柠檬酸,一水  [5949-29-1] 分析标准品,HPLC≥98% 200mg 176.00 促销价:132.00
  •  订货编号
  •  商品名称
  •  规格
  •  包装
  •  单价
  •  促销价
  •  会员价
  •  数量

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


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


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
WGK Germany  1
RTECS号 AL3150000
危险类别码  11-36-66-67-41-36/37/38-37/38
安全说明  9-16-26-37/39-36/37/39-36

用途及存储

主要用作食品的酸味剂,也用于制备医药清凉剂、洗涤剂用添加剂

  密封干燥保存。