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Merck

71498

Sigma-Aldrich

柠檬酸二钠

Sodium citrate monobasic

purum p.a., anhydrous, ≥99.0% (T)

别名:

柠檬酸 单钠盐, 柠檬酸二氢钠

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250 G
$127.00
1 KG
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About This Item

线性分子式:
HOC(COONa)(CH2COOH)2
CAS号:
分子量:
214.11
Beilstein:
3920246
EC 号:
MDL编号:
UNSPSC代码:
12352100
PubChem化学物质编号:
NACRES:
NA.22

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等级

purum p.a.

方案

≥99.0% (T)

表单

crystals

pH值(酸碱度)

3.5-3.8 (25 °C, 50 mg/mL in H2O)

溶解性

water: soluble 50, clear, colorless

痕量阴离子

chloride (Cl-): ≤50 mg/kg
sulfate (SO42-): ≤50 mg/kg

痕量阳离子

Ca: ≤50 mg/kg
Cd: ≤50 mg/kg
Co: ≤50 mg/kg
Cu: ≤50 mg/kg
Fe: ≤50 mg/kg
K: ≤100 mg/kg
Ni: ≤50 mg/kg
Pb: ≤50 mg/kg
Zn: ≤50 mg/kg

官能团

carboxylic acid
hydroxyl

SMILES字符串

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

InChI

1S/C6H8O7.Na/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);/q;+1/p-1

InChI key

HWPKGOGLCKPRLZ-UHFFFAOYSA-M

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一般描述

一元柠檬酸钠(柠檬酸二氢钠)是柠檬酸的一钠盐。已经提出了等渗方法来评估柠檬酸二氢钠的二元水性混合物的气液平衡参数(水活度、蒸气压、渗透系数和活度系数)。[1]已报道了通过 X 射线衍射法研究柠檬酸二氢钠的晶体结构。其晶体为单斜晶,空间群为 P21/a。[2]
柠檬酸钠通常用作各种应用中的缓冲剂。[3]

柠檬酸钠是改善透钙磷石骨水泥性能的有效缓凝剂。[4]

应用

柠檬酸二氢钠适用于合成 16 个功能性烯烃封端的超支化低聚物,可用于制备牙科复合材料的复合体系。[5]它适用于制备胃液,以研究烹饪方法以及所选食物的共摄取对鱼类中汞生物有效性的影响。[6]

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)


历史批次信息供参考:

分析证书(COA)

Lot/Batch Number

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J E Barralet et al.
Biomaterials, 25(11), 2197-2203 (2004-01-27)
Brushite-forming calcium phosphate cements are of great interest as bone replacement materials because they are resorbable in physiological conditions. However, their short setting times, low mechanical strengths and limited injectability limit broad clinical application. In this study, we showed that
Influence of solid-state acidity on the decomposition of sucrose in amorphous systems (I)
Alkhamis KA
International Journal of Pharmaceutics, 362, 74-80 (2008)
Ousséni Ouédraogo et al.
Environmental research, 111(8), 1064-1069 (2011-10-22)
Fish consumption is the main source of human exposure to mercury. Studies from specific human populations have reported Hg levels lower than those modeled from consumption data. These discrepancies between expected and measured Hg levels may be explained by differences
The state of ionization of crystalline sodium dihydrogen citrate1
Glusker JP, et al.
Journal of the American Chemical Society, 82(11), 2964-2965 (1960)
Sheng Ye et al.
Dental materials : official publication of the Academy of Dental Materials, 28(9), 1004-1011 (2012-06-22)
Fillers are widely utilized to enhance the mechanical properties of polymer resins. However, polymerization stress has the potential to increase due to the higher elastic modulus achieved upon filler addition. Here, we demonstrate a hyperbranched oligomer functionalized glass filler UV

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    1 answer
    1. If this product has an expiration or retest date, it will be shown on the Certificate of Analysis (COA, CofA). If there is no retest or expiration date listed on the product's COA, we do not have suitable stability data to determine a shelf life. For these products, the only date on the COA will be the release date; a retest, expiration, or use-by-date will not be displayed.
      For all products, we recommend handling per defined conditions as printed in our product literature and website product descriptions. We recommend that products should be routinely inspected by customers to ensure they perform as expected.
      For products without retest or expiration dates, our standard warranty of 1 year from the date of shipment is applicable.
      For more information, please refer to the Product Dating Information document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/449/386/product-dating-information-mk.pdf

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  2. How is shipping temperature determined? And how is it related to the product storage temperature?

    1 answer
    1. Products may be shipped at a different temperature than the recommended long-term storage temperature. If the product quality is sensitive to short-term exposure to conditions other than the recommended long-term storage, it will be shipped on wet or dry-ice. If the product quality is NOT affected by short-term exposure to conditions other than the recommended long-term storage, it will be shipped at ambient temperature. As shipping routes are configured for minimum transit times, shipping at ambient temperature helps control shipping costs for our customers. For more information, please refer to the Storage and Transport Conditions document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/316/622/storage-transport-conditions-mk.pdf

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