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71650

Sodium phosphate dibasic dodecahydrate

puriss. p.a., crystallized, ≥99.0% (T)

Synonym(s):

sec-Sodium phosphate, Disodium hydrogen phosphate dodecahydrate, Disodium phosphate, di-Sodium hydrogen phosphate dodecahydrate

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About This Item

Linear Formula:
Na2HPO4 · 12H2O
CAS Number:
10039-32-4
Molecular Weight:
358.14
NACRES:
NA.21
PubChem Substance ID:
329763400
UNSPSC Code:
12161700
EC Number:
231-448-7
MDL number:
MFCD00149181
Assay:
≥99.0% (T)
Form:
crystals
Solubility:
water: soluble 35.8 g/L at 20 °C

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InChI key

DGLRDKLJZLEJCY-UHFFFAOYSA-L

InChI

1S/2Na.H3O4P.12H2O/c;;1-5(2,3)4;;;;;;;;;;;;/h;;(H3,1,2,3,4);12*1H2/q2*+1;;;;;;;;;;;;;/p-2

grade

puriss. p.a.

assay

≥99.0% (T)

form

crystals

quality

crystallized

pH

9.0-9.3 (25 °C, 50 mg/mL in H2O)

solubility

water: soluble 35.8 g/L at 20 °C

anion traces

chloride (Cl-): ≤5 mg/kg, fluoride (F-): ≤5 mg/kg, sulfate (SO42-): ≤50 mg/kg

cation traces

As: ≤0.5 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, Mg: ≤5 mg/kg, Mn: ≤5 mg/kg, Ni: ≤5 mg/kg, Pb: ≤5 mg/kg, Zn: ≤5 mg/kg

Quality Level

200

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1 of 4

This Item
716497166328-3720
Sodium phosphate dibasic dodecahydrate puriss. p.a., crystallized, ≥99.0% (T)

Sigma-Aldrich

71650

Sodium phosphate dibasic dodecahydrate

Sodium phosphate dibasic dodecahydrate BioXtra, ≥99.0% (T)

Sigma-Aldrich

71649

Sodium phosphate dibasic dodecahydrate

Sodium phosphate dibasic dodecahydrate tested according to Ph. Eur.

Sigma-Aldrich

71663

Sodium phosphate dibasic dodecahydrate

Sodium phosphate dibasic dodecahydrate JIS special grade, ≥99.0%

Sigma-Aldrich

28-3720

Sodium phosphate dibasic dodecahydrate

form

crystals

form

crystals

form

crystalline

form

crystalline

solubility

water: soluble 35.8 g/L at 20 °C

solubility

H2O: 0.1 M at 20 °C, clear, colorless

solubility

water: ~35.8 g/L at 20 °C

solubility

-

assay

≥99.0% (T)

assay

≥99.0% (T)

assay

98.5-102.5%

assay

≥99.0%

Quality Level

200

Quality Level

200

Quality Level

200

Quality Level

-

grade

puriss. p.a.

grade

-

grade

-

grade

-

pH

9.0-9.3 (25 °C, 50 mg/mL in H2O)

pH

8.8-9.4 (25 °C, 0.1 M in H2O)

pH

-

pH

8.4-9.6 (25 °C, 35.8 g/L)

General description

Sodium phosphate is a colorless crystalline sodium salt. It is widely used as a buffer in molecular biology, biochemistry, and chromatographic studies. It exists in three forms: monobasic (NaH2PO4), dibasic (Na2HPO4), and tribasic (Na3PO4). Monobasic and dibasic forms in varying ratios are commonly used to compose the neutral sodium phosphate buffer solution.

Application

Sodium phosphate dibasic dodecahydrate may be used to prepare the 0.1M phosphate buffer having pH 7.4.[1]

Storage Class

13 - Non Combustible Solids

flash_point_f

Not applicable

flash_point_c

Not applicable

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Certificates of Analysis (COA)

Lot/Batch Number
BCCM6212
BCCK7964
BCCH7399
BCCJ5385
BCCG6363

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