Merck
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S7778

Sigma-Aldrich

Sodium phosphate tribasic dodecahydrate

BioXtra, ≥98.0% (titration)

Synonym(s):
TSP, Trisodium phosphate (tert) dodecahydrate, Trisodium phosphate dodecahydrate
Linear Formula:
Na3PO4 · 12H2O
CAS Number:
Molecular Weight:
380.12
EC Number:
MDL number:
PubChem Substance ID:
NACRES:
NA.25

product line

BioXtra

Quality Level

assay

≥98.0% (titration)

form

powder

impurities

Insoluble matter, passes filter test
≤3% Free alkali (as NaOH)

pH

~13.0 (20 °C, 0.5 M in water)

solubility

H2O: 0.5 M at 20 °C, clear, colorless

density

1.62 g/mL at 25 °C

anion traces

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

cation traces

Al: ≤0.0005%
Ba: ≤0.0005%
Bi: ≤0.0005%
Ca: ≤0.001%
Cd: ≤0.0005%
Co: ≤0.0005%
Cr: ≤0.0005%
Cu: ≤0.0005%
Fe: ≤0.0005%
K: ≤0.005%
Li: ≤0.0005%
Mg: ≤0.0005%
Mn: ≤0.0005%
Mo: ≤0.0005%
Ni: ≤0.0005%
Pb: ≤0.0005%
Sr: ≤0.0005%
Zn: ≤0.0005%

absorption

≤0.023 at 280 in H2O at 0.5 M
≤0.035 at 260 in H2O at 0.5 M

application(s)

diagnostic assay manufacturing

SMILES string

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

InChI

1S/3Na.H3O4P.12H2O/c;;;1-5(2,3)4;;;;;;;;;;;;/h;;;(H3,1,2,3,4);12*1H2/q3*+1;;;;;;;;;;;;;/p-3

InChI key

ASTWEMOBIXQPPV-UHFFFAOYSA-K

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Pictograms

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Signal Word

Warning

Hazard Statements

Hazard Classifications

Eye Irrit. 2 - Skin Irrit. 2 - STOT SE 3

Target Organs

Respiratory system

Storage Class Code

8A - Combustible, corrosive hazardous materials

WGK

WGK 1

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Certificate of Analysis

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Certificate of Origin

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