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04274

Sodium phosphate dibasic heptahydrate

puriss., meets analytical specification of USP, 99-100.5% (calc. to the dried substance)

Synonym(s):

Disodium hydrogen phosphate heptahydrate, Disodium phosphate

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About This Item

Linear Formula:
Na2HPO4 · 7H2O
CAS Number:
7782-85-6
Molecular Weight:
268.07
UNSPSC Code:
12161700
PubChem Substance ID:
24845714
EC Number:
237-707-0
MDL number:
MFCD00149180
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vapor density

4.9 (vs air)

grade

puriss.

assay

99-100.5% (calc. to the dried substance)

quality

meets analytical specification of USP

impurities

residual solvents, complies, ≤0.001% heavy metals (as Pb)

loss

43.0-50.0% loss on drying, 120 °C

solubility

H2O: soluble 4 parts, H2O: very soluble, alcohol: very slightly soluble

density

1.68 g/mL at 25 °C (lit.)

anion traces

chloride (Cl-): ≤10 mg/kg, sulfate (SO42-): ≤200 mg/kg

cation traces

As: ≤1 mg/kg, Fe: ≤20 mg/kg, K: ≤100 mg/kg

SMILES string

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

InChI

1S/2Na.H3O4P.7H2O/c;;1-5(2,3)4;;;;;;;/h;;(H3,1,2,3,4);7*1H2/q2*+1;;;;;;;;/p-2

InChI key

PYLIXCKOHOHGKQ-UHFFFAOYSA-L

Application

Sodium phosphate dibasic heptahydrate has been used for preparing phosphate buffered saline which in turn is utilized for identifying the small molecular weight analytes to extremely low concentrations in air or water by using microfabricated protein-containing poly (ethylene glycol) hydrogel arrays. It has also been used for preparing isotonic phosphate buffer which is utilized in cell culture of Jurkat T cells.

Biochem/physiol Actions

Sodium phosphate dibasic is an important component of running buffer of denaturing gel electrophoresis. It induces glomerular calcification as well as other nephrotic syndrome in Sprague-Dawley rats.

Other Notes

A -D suffix exists for administrative purposes only. All -D packages are 100% the same product, same quality, same specification as the package sizes previously sold without a -D.

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flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

Eyeshields, Gloves, type N95 (US)

Storage Class

11 - Combustible Solids

Regulatory Information

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Certificates of Analysis (COA)

Lot/Batch Number
SZB81690V
SZB81690
SZB81680V
B2650
82670

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Microfabricated protein-containing poly(ethylene glycol) hydrogel arrays for biosensing.
Vamsi K. Yadavalli
Sensors and Actuators B, Chemical, 97, 290-297 (2004)
Hongkai Wu et al.
Proceedings of the National Academy of Sciences of the United States of America, 101(35), 12809-12813 (2004-08-26)
An integrated microfluidic device has been fabricated for analyzing the chemical contents of a single cell (chemical cytometry). The device is designed to accomplish four different functions: (i) cell handling, (ii) metering and delivering of chemical reagents, (iii) cell lysis
Noriko Tsuchiya et al.
Toxicologic pathology, 32(4), 408-412 (2004-06-19)
To elucidate the nephrotoxicity of phosphate, dibasic sodium phosphate solution was given to Sprague-Dawley rats by daily bolus intravenous administration at concentrations of 0, 1, 25, 250, or 360 mM (0, 1, 28, 284, or 408 mg/kg Na2HPO4) for 14
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