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S4641

Sigma-Aldrich

柠檬酸钠三盐基 二水合物

ACS reagent, ≥99.0%

别名:

柠檬酸 三钠盐 二水合物, 柠檬酸三钠 二水合物

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About This Item

线性分子式:
HOC(COONa)(CH2COONa)2 · 2H2O
CAS号:
6132-04-3
分子量:
294.10
Beilstein:
6104939
EC 号:
200-675-3
MDL编号:
MFCD00150031
UNSPSC代码:
12352100
PubChem化学物质编号:
24899613
NACRES:
NA.21
方案:
≥99.0%
等级:
ACS reagent
溶解性:
water: soluble 29.4 g/L at 20 °C (completely)

等级

ACS reagent

质量水平

200

Agency

suitable for SM 4500 - NH3

方案

≥99.0%

杂质

≤0.003% Ammonia (NH3)
≤0.005% Insoluble matter

pH值（酸碱度）

7.0-9.0 (25 °C, 5% in solution)

mp

>300 °C (lit.)

溶解性

water: soluble 29.4 g/L at 20 °C (completely)

痕量阴离子

chloride (Cl-): ≤0.003%
sulfate (SO42-): ≤0.005%

痕量阳离子

Ca: ≤0.005%
Fe: ≤5 ppm
heavy metals: ≤5 ppm (by ICP-OES)

SMILES字符串

O.O.[Na+].[Na+].[Na+].OC(CC([O-])=O)(CC([O-])=O)C([O-])=O

InChI

1S/C6H8O7.3Na.2H2O/c7-3(8)1-6(13,5(11)12)2-4(9)10;;;;;/h13H,1-2H2,(H,7,8)(H,9,10)(H,11,12);;;;2*1H2/q;3*+1;;/p-3

InChI key

NLJMYIDDQXHKNR-UHFFFAOYSA-K

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应用

柠檬酸三钠二水合物可以用作催化剂，合成：     
  • 稠合 O-和 N-杂环衍生物，通过靛红/醛/苊-1,2-二酮、丙二腈和各种 C−H 活化酸的多组分 Knoevenagel 环缩合反应。     
  • 铬并[3′,4′:5,6]吡喃并[2,3-d]嘧啶，通过4-羟基香豆素、芳香醛和巴比妥酸/硫代巴比妥酸的缩合反应。

它也可以用作：      
一种使用相应的金属盐前体通过溶胶-凝胶法合成金属纳米颗粒的还原剂。    
配位聚合物[Co(H2O)2Ni(CN)4 4H2O]单晶合成中的控制剂。

储存分类代码

11 - Combustible Solids

WGK

WGK 1

闪点(°F)

Not applicable

闪点(°C)

Not applicable

个人防护装备

Eyeshields, Gloves, type N95 (US)

从最新的版本中选择一种：

分析证书(COA)

Lot/Batch Number
0000411027
0000411027
0000404506
0000404522
0000399137

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Complex coacervation is an emerging liquid/liquid phase separation (LLPS) phenomenon that behaves as a membrane-less organelle in living cells. Yet while one of the critical factors for complex coacervation is temperature, little analysis and research has been devoted to the
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Programmed cell death 4 (PDCD4) protein is a tumor suppressor that inhibits translation through the mTOR-dependent initiation factor EIF4A, but its functional role and mRNA targets in neurons remain largely unknown. Our work identified that PDCD4 is highly expressed in
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Nanoparticle delivery to solid tumours over the past ten years has stagnated at a median of 0.7% of the injected dose. Varying nanoparticle designs and strategies have yielded only minor improvements. Here we discovered a dose threshold for improving nanoparticle tumour
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Mast cell (MC) deficiency in KitW-sh/W-sh mice and inhibition with disodium chromoglycate (DSCG) or ketotifen reduced obesity and diabetes in mice on a high-cholesterol (1.25%) Western diet. Yet, Kit-independent MC-deficient mice and mice treated with DSCG disproved MC function in
Wei Yu et al.
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The alternative non-homologous end-joining (NHEJ) pathway promotes DNA double-strand break (DSB) repair in cells deficient for NHEJ or homologous recombination, suggesting that it operates at all stages of the cell cycle. Here, we use an approach in which DNA breaks
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