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Merck

71498

Sodium citrate monobasic

purum p.a., anhydrous, ≥99.0% (T)

Synonym(s):

Citric acid monosodium salt, Sodium dihydrogen citrate

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About This Item

Linear Formula:
HOC(COONa)(CH2COOH)2
CAS Number:
18996-35-5
Molecular Weight:
214.11
UNSPSC Code:
12352100
NACRES:
NA.22
PubChem Substance ID:
57652307
EC Number:
242-734-6
Beilstein/REAXYS Number:
3920246
MDL number:
MFCD00013067

Product Name

Sodium citrate monobasic, purum p.a., anhydrous, ≥99.0% (T)

InChI key

HWPKGOGLCKPRLZ-UHFFFAOYSA-M

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

SMILES string

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

grade

purum p.a.

assay

≥99.0% (T)

form

crystals

pH

3.5-3.8 (25 °C, 50 mg/mL in H2O)

solubility

water: soluble 50, clear, colorless

anion traces

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

cation traces

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

functional group

carboxylic acid
hydroxyl

Quality Level

300

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Application

Sodium citrate monobasic is suitable for use in the synthesis of 16 functional alkene-terminated hyperbranched oligomer, useful for the preparation of composite system for dental composite applications. It is suitable for use in the preparation of gastric solutions, to investigate the effects of cooking methods and of the co-ingestion of selected food items on Hg bioaccessibility in fish species.

General description

Sodium citrate monobasic (Sodium dihydrogen citrate) is the monosodium salt of citric acid. Isopiestic method has been proposed for the evaluation of vapor-liquid equilibrium parameters (water activity, vapor pressure, osmotic coefficient and activity coefficient) for the binary aqueous mixtures of sodium dihydrogen citrate. X-ray diffraction method has been reported to investigate the crystal structure of sodium dihydrogen citrate. Its crystals are monoclinic having space group of P21/a.
Sodium citrate monobasic is commonly used as a buffering agent in various applications.

Sodium citrate is a useful setting retardant for the improvement of the properties of brushite cement.

Storage Class

11 - Combustible Solids

wgk

WGK 1

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

Eyeshields, Gloves, type N95 (US)

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Certificates of Analysis (COA)

Lot/Batch Number
BCCP0434
BCCN6233
BCCN0049
BCCM9324
BCCL8528

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Influence of solid-state acidity on the decomposition of sucrose in amorphous systems (I)
Alkhamis KA
International Journal of Pharmaceutics, 362, 74-80 (2008)
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
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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