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32320

Sigma-Aldrich

Sodium citrate tribasic dihydrate

puriss. p.a., ACS reagent, reag. ISO, reag. Ph. Eur., ≥99.5%

Synonym(s):

Citric acid trisodium salt dihydrate, Trisodium citrate dihydrate

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About This Item

Linear Formula:
HOC(COONa)(CH2COONa)2 · 2H2O
CAS Number:
6132-04-3
Molecular Weight:
294.10
Beilstein/REAXYS Number:
6104939
EC Number:
200-675-3
MDL number:
MFCD00150031
UNSPSC Code:
12352100
PubChem Substance ID:
57648648

grade

ACS reagent
puriss. p.a.

agency

USP/NF
reag. ISO
reag. Ph. Eur.

assay

≥99.5%

impurities

≤0.001% total nitrogen (N)
11-13% water (Karl Fischer)

pH

7.5-9.0 (20 °C, 5%)

mp

>300 °C (lit.)

anion traces

chloride (Cl-): ≤10 mg/kg
oxalate (C2O42-): ≤200 mg/kg
phosphate (PO43-): ≤20 mg/kg
sulfate (SO42-): ≤10 mg/kg

cation traces

Ca: ≤50 mg/kg
Cu: ≤5 mg/kg
Fe: ≤5 mg/kg
Pb: ≤2 mg/kg
Zn: ≤5 mg/kg

suitability

complies for reaction against H2SO4

SMILES string

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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Storage Class

13 - Non Combustible Solids

wgk_germany

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
SZB81910
SZBB187A
SZBB187AV
SZBC0190V
SZBB1240

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