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Merck
CN

SX0725

Sodium Phosphate, Tribasic, Dodecahydrate

Meets ACS Specifications, Meets Reagent Specifications for testing USP/NF monographs GR ACS

Synonym(s):

Sodium Phosphate, Tribasic, Dodecahydrate, tri-Sodium Phosphate, Dodecahydrate, Sodium Phosphate

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About This Item

Empirical Formula (Hill Notation):
Na3O4P · 12H2O
CAS Number:
10101-89-0
Molecular Weight:
380.12
EC Index Number:
231-509-8
UNSPSC Code:
12352302
MDL number:
MFCD00149198

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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

assay

98.0-102.0% (Na3PO4.12H2O)

pH

12 (20 °C, 10 g/L in H2O)

mp

75 °C (Elimination of water of crystallisation)

solubility

285 g/L

anion traces

chloride (Cl-): 0.001%, sulfate (SO42-): 0.01%

cation traces

Fe: ≤0.001%, heavy metals (as Pb): ≤0.001%

shipped in

ambient

storage temp.

room temp

Quality Level

300

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Application

Meets ACS Specifications, Meets Reagent Specifications for testing USP/NF monographs GR ACS

Analysis Note

Assay (Na3PO4·12H2O)98.0-102.0%Chloride (Cl)0.001% maxColorColorlessExcess alkali (as NaOH)2.5% maxFormCrystalsHeavy metals (as Pb)0.001% maxInsoluble matter0.01% maxIron (Fe)0.001% maxSulfate (SO4)0.01% max

Storage Class

10-13 - German Storage Class 10 to 13

Regulatory Information

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