MilliporeSigma
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1.06448

Supelco

tri-Sodium citrate dihydrate

for analysis EMSURE® ACS,ISO,Reag. Ph Eur

Synonym(s):
Trisodium Citrate, Sodium Citrate, Dihydrate, Trisodium citrate dihydrate, Citric acid trisodium salt dihydrate, Sodium citrate tribasic dihydrate
Linear Formula:
HOC(COONa)(CH2COONa)2 · 2H2O
CAS Number:
Molecular Weight:
294.10
Beilstein:
6104939
MDL number:
EC Index Number:
200-675-3

Quality Level

grade

ACS reagent

Agency

reag. ISO
reag. Ph. Eur.

product line

EMSURE®

assay

99.0-101.0% (perchloric acid titration)
99.0-101.0% anhydrous basis (perchloric acid titration)

form

solid

potency

>8000 mg/kg LD50, oral (Rat)

composition

Water, 11-13%

impurities

≤0.005% Insoluble matter

pH

7.5-9.0 (25 °C, 50 g/L in H2O)

mp

150 °C (anhydrous substance)
>300 °C (lit.)

bulk density

600 kg/m3

anion traces

chloride (Cl-): ≤0.001%
oxalate (C2O42-): ≤0.0300%
phosphate (PO43-): ≤0.002%
sulfate (SO42-): ≤0.004%

cation traces

Ca: ≤0.005%
Fe: ≤0.0005%
N: ≤0.001%
NH4+: ≤0.003%
heavy metals: ≤0.0005%
heavy metals (as Pb): ≤0.0005%

storage temp.

2-30°C

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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Linkage

Replaces: SX0445; SX0445-1; SX0445-3; SX0445-5; SX0445-20

Analysis Note

Assay (perchloric acid titration): 99.0 - 101.0 %
Assay (Perchloric acid titration, calc. on anhydrous substance): 99.0 - 101.0 %
Identity: passes test
Appearance of solution: passes test
Insoluble matter: ≤ 0.005 %
pH-value (5 %; water; 25 °C): 7.5 - 9.0
Acidity or alkalinity: passes test
Chloride (Cl): ≤ 0.001 %
Oxalate (C₂O₄): ≤ 0.0300 %
Phosphate (PO₄): ≤ 0.002 %
Sulfate (SO₄): ≤ 0.004 %
Total nitrogen (N): ≤ 0.001 %
Heavy metals (ACS): ≤ 0.0005 %
Heavy metals (as Pb): ≤ 0.0005 %
Ca (Calcium): ≤ 0.005 %
Fe (Iron): ≤ 0.0005 %
NH₃ (Ammonia): ≤ 0.003 %
Readily carbonisable substance: passes test
Water: 11.0 - 13.0 %
Corresponds to ACS,ISO,Reag. Ph Eur

Legal Information

EMSURE is a registered trademark of Merck KGaA, Darmstadt, Germany

Storage Class Code

11 - Combustible Solids

WGK

WGK 1

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

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Certificate of Quality

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