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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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25 G
CN¥495.61
500 G
CN¥792.12
1 KG
CN¥1,011.77
5 KG
CN¥4,807.89

CN¥495.61

国内现货，预计发货时间April 17, 2025详情

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25 G
CN¥495.61
500 G
CN¥792.12
1 KG
CN¥1,011.77
5 KG
CN¥4,807.89

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

CN¥495.61

国内现货，预计发货时间April 17, 2025详情

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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)

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Sodium citrate tribasic dihydrate ACS reagent, ≥99.0%

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Sodium citrate tribasic dihydrate

Sodium citrate tribasic dihydrate BioXtra, ≥99.0% (titration)

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Sodium citrate tribasic dihydrate

Sodium citrate tribasic dihydrate puriss., meets analytical specification of Ph. Eur., BP, USP, FCC, E331, 99-100.5% (calc. to the dried substance)

25116

Sodium citrate tribasic dihydrate

Sodium citrate tribasic dihydrate Vetec™, reagent grade, 98%

V900095

Sodium citrate tribasic dihydrate

solubility

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

solubility

H2O: 0.1 M at 20 °C, clear, colorless

solubility

-

solubility

-

Quality Level

200

Quality Level

200

Quality Level

200

Quality Level

-

grade

ACS reagent

grade

-

grade

-

grade

reagent grade

impurities

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

impurities

Insoluble matter, passes filter test

impurities

Residual solvent, in accordance, acidity or alkalinity, complies, ≤0.0005% heavy metals (as Pb), ≤0.04% free alkali (as NaOH), ≤0.06% free acid (as C6H8O7), 11.0-13.0 water (Karl Fischer)

impurities

-

mp

>300 °C (lit.)

mp

>300 °C (lit.)

mp

>300 °C (lit.)

mp

>300 °C (lit.)

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)

  • 技术规格说明书

    • 历史批次信息供参考:

    分析证书(COA)

    Lot/Batch Number
    WXBF5730V
    0000428507
    0000428504
    0000428504
    0000428507

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    RNA (New York, N.Y.), 26(11), 1637-1653 (2020-08-05)
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    Wei Yu et al.
    Nature communications, 11(1), 5239-5239 (2020-10-18)
    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
    Xian Zhang et al.
    Biochimica et biophysica acta. Molecular basis of disease, 1865(6), 1690-1700 (2019-04-13)
    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
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