柠檬酸,一水 [5949-29-1]
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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
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
|
化学性质
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。