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221368

Sigma-Aldrich

Sodium pyrophosphate decahydrate

ACS reagent, ≥99%

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Synonym(s):
Sodium pyrophosphate tetrabasic decahydrate, Tetrasodium pyrophosphate
Linear Formula:
Na4P2O7 · 10H2O
CAS Number:
Molecular Weight:
446.06
EC Number:
MDL number:
PubChem Substance ID:
NACRES:
NB.24

grade

ACS reagent

Quality Level

assay

≥99%

form

crystals or chunks

impurities

≤0.001% N compounds
≤0.01% insolubles

pH

9.5-10.5 (25 °C, 5%)

anion traces

chloride (Cl-): ≤0.002%
sulfate (SO42-): ≤0.005%

cation traces

Fe: ≤0.001%
heavy metals (as Pb): ≤0.001%

SMILES string

O.O.O.O.O.O.O.O.O.O.[Na+].[Na+].[Na+].[Na+].[O-]P([O-])(=O)OP([O-])([O-])=O

InChI

1S/4Na.H4O7P2.10H2O/c;;;;1-8(2,3)7-9(4,5)6;;;;;;;;;;/h;;;;(H2,1,2,3)(H2,4,5,6);10*1H2/q4*+1;;;;;;;;;;;/p-4

InChI key

VZWGHDYJGOMEKT-UHFFFAOYSA-J

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This Item
S6422715151.06591
Sodium pyrophosphate decahydrate ACS reagent, ≥99%

221368

Sodium pyrophosphate decahydrate

Essential Grade
Sodium pyrophosphate tetrabasic decahydrate BioXtra, 99.0-103.0%

S6422

Sodium pyrophosphate tetrabasic decahydrate

Premium Grade
Sodium pyrophosphate tetrabasic decahydrate BioUltra, ≥99.5% (T)

71515

Sodium pyrophosphate tetrabasic decahydrate

Premium Grade
assay

≥99%

assay

99.0-103.0%

assay

≥99.5% (T)

assay

99.0-103.0% (acidimetric)

Quality Level

200

Quality Level

200

Quality Level

200

Quality Level

300

grade

ACS reagent

grade

-

grade

-

grade

ACS reagent

impurities

≤0.001% N compounds, ≤0.01% insolubles

impurities

≤0.01% Insoluble matter

impurities

insoluble matter, passes filter test

impurities

≤0.001% Total nitrogen (N), ≤0.01% Insoluble matter

cation traces

Fe: ≤0.001%, heavy metals (as Pb): ≤0.001%

cation traces

Al: ≤0.0005%, Ca: ≤0.0005%, Cu: ≤0.0005%, Fe: ≤0.0005%, K: ≤0.005%, Mg: ≤0.0005%, NH4+: ≤0.05%, Pb: ≤0.001%, Zn: ≤0.0005%

cation traces

Al: ≤5 mg/kg, As: ≤0.1 mg/kg, Ba: ≤5 mg/kg, Bi: ≤5 mg/kg, Ca: ≤10 mg/kg, Cd: ≤5 mg/kg, Co: ≤5 mg/kg, Cr: ≤5 mg/kg, Cu: ≤5 mg/kg, Fe: ≤5 mg/kg, K: ≤50 mg/kg, Li: ≤5 mg/kg, Mg: ≤5 mg/kg, Mn: ≤5 mg/kg, Mo: ≤5 mg/kg, Ni: ≤5 mg/kg, Pb: ≤5 mg/kg, Sr: ≤5 mg/kg, Zn: ≤5 mg/kg

cation traces

Fe: ≤0.0005%, K: ≤0.005%, heavy metals (as Pb): ≤0.0005%

Application

Sodium pyrophosphate decahydrate may be used to catalyze the nucleation of sodium acetate trihydrate, a potential latent heat storage material.

pictograms

CorrosionExclamation mark

signalword

Danger

Hazard Classifications

Acute Tox. 4 Oral - Eye Dam. 1

Storage Class

11 - Combustible Solids

wgk_germany

WGK 1

flash_point_f

Not applicable

flash_point_c

Not applicable


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Acta Crystallographica, 10(6), 428-432 (1957)

Protocols

To measure alcohol dehydrogenase activity, this assay uses β-nicotinamide adenine dinucleotide phosphate and a continuous spectrophotometric rate determination at 340 nm.

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