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431478

Sigma-Aldrich

Sodium phosphate dibasic heptahydrate

≥99.99% trace metals basis

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
EC Number:
237-707-0
MDL number:
MFCD00149180
UNSPSC Code:
12352302
PubChem Substance ID:
24867019
NACRES:
NA.22
Assay:
≥99.99% trace metals basis
form:
solid
Pricing and availability is not currently available.

vapor density

4.9 (vs air)

Quality Level

200

Assay

≥99.99% trace metals basis

form

solid

impurities

≤0.005% insolubles
<100 ppm total metallic impurities

pH

8.7-9.3

density

1.68 g/mL at 25 °C (lit.)

anion traces

chloride (Cl-): ≤0.001%
sulfate (SO42-): ≤0.005%

cation traces

Fe: ≤0.001%
heavy metals: ≤0.001%

functional group

phosphate

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

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Application

Sodium phosphate dibasic heptahydrate has been used to prepare sodium phosphate buffer and phosphate-buffered saline (PBS) buffer.[1][44}

Features and Benefits

Meets A.C.S. reagent specifications.

Storage Class Code

13 - Non Combustible Solids

WGK

WGK 1

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

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Certificates of Analysis (COA)

Lot/Batch Number
MKCV5831
MKCV8155
MKCW5120
MKCV0694
MKCQ9703

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Bacterial Competition Assay Based on Extracellular D-amino Acid Production.
Alvarez L
Bio-protocol, 8(7), e2787-e2787 (2018)
Walter Grünberg et al.
The British journal of nutrition, 110(6), 1012-1023 (2013-04-03)
Hypophosphataemia is frequently encountered in dairy cows during early lactation. Although supplementation of P is generally recommended, controversy exists over the suitability of oral P supplementation in animals with decreased or absent rumen motility. Since the effects of transruminal P
M A Marzouk et al.
Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy, 114, 658-667 (2013-07-03)
The effects of gamma irradiation on spectral properties of Cr2O3-doped phosphate glasses of three varieties, namely sodium metaphosphate, lead metaphosphate and zinc metaphosphate have been investigated. Optical spectra of the undoped samples reveal strong UV absorption bands which are attributed
Matthew H Crouthamel et al.
Arteriosclerosis, thrombosis, and vascular biology, 33(11), 2625-2632 (2013-08-24)
Elevated serum phosphate has emerged as a major risk factor for vascular calcification. The sodium-dependent phosphate cotransporter, PiT-1, was previously shown to be required for phosphate-induced osteogenic differentiation and calcification of cultured human vascular smooth muscle cells (VSMCs), but its
H Meredith et al.
International journal of food microbiology, 166(2), 309-315 (2013-08-27)
Campylobacteriosis is the most common foodborne bacterial infection in developed countries and many cases are associated with poultry. This study investigated the immediate and storage effect of dipping inoculated poultry skin samples in trisodium phosphate (TSP, 10 & 14%, w/v)
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