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Merck
CN

28-3770

Sodium phosphate dibasic

≥99.5%

Synonym(s):

sec-Sodium phosphate, Disodium hydrogen phosphate, Disodium phosphate, Sodium hydrogenphosphate

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About This Item

Linear Formula:
Na2HPO4
CAS Number:
7558-79-4
Molecular Weight:
141.96
UNSPSC Code:
12352300
PubChem Substance ID:
329753177
EC Number:
231-448-7
MDL number:
MFCD00003496
Assay:
≥99.5%
Grade:
SAJ special grade
Form:
powder

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form

powder

InChI key

BNIILDVGGAEEIG-UHFFFAOYSA-L

InChI

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

grade

SAJ special grade

assay

≥99.5%

availability

available only in Japan

pH

8.9-9.2 (25 °C, 50 g/L)

pKa (25 °C)

(1) 2.15, (2) 6.82, (3) 12.38 (phosphoric acid)

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Application

pH standard solution

Storage Class

13 - Non Combustible Solids

wgk

WGK 1

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

Eyeshields, Gloves, type N95 (US)

Regulatory Information

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Certificates of Analysis (COA)

Lot/Batch Number
U1564
U2476
U1429
U2335
U3238

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