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935670

Sigma-Aldrich

Sodium phosphate tribasic

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≥99.9% trace metals basis

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Synonym(s):
Sodium orthophosphate, Trisodium phosphate
Empirical Formula (Hill Notation):
Na3PO4
CAS Number:
7601-54-9
Molecular Weight:
163.94
MDL number:
MFCD00003510
UNSPSC Code:
51171630
NACRES:
NA.21

Quality Level

200

Assay

≥99.9% trace metals basis

form

(powder, crystals, or granules)

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Design for Energy Efficiency
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impurities

≤1500 (trace metals analysis)

color

white to off-white

mp

1583 °C

solubility

water: slightly soluble

density

2.54 g/cm3

greener alternative category

Enabling

SMILES string

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

InChI

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

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General description

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Application

Sodium phosphate tribasic is used to synthesis a reproducible Ag3PO4/TiO2 visible light photocatalyst to improve the photocatalytic activity and stability of Ag3PO4. It has also been employed as a mineralizer in the hydrothermal synthesis of uniform single-crystalline CeO2 nano-octahedrons and nanorods. It does not leave any impurities in the reaction system and makes it very easy to obtain and separate the octahedral and rod-like morphology.In addition, anodizing of Magnesium is studied in a solution containing sodium phosphate tribasic and KOH-aluminate to form anodic films of MgO and MgAl2O4 . Microarc oxidation coatings on magnesium alloy were created in sodium phosphate-KOH electrolytes with NaAlO2. The addition of NaAlO2 to the base electrolyte increased the amount of spinel MgAl2O4 in the oxide coating.

In general, sodium phosphate tribasic is used as:

  1. component in the preparation of solid crystals of calcium hydroxyapatite substituted by strontium
  2. block buffer to study segmental and subcellular distribution of CFTR in the kidney
  3. pH control agent, water hardness precipitation, laboratory reagent, phosphatizing reagent.

Pictograms

Exclamation mark
GHS07

Signal Word

Warning

Hazard Statements

H315,H319,H335

Hazard Classifications

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

Target Organs

Respiratory system

WGK

WGK 1

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Regulatory Information

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Certificates of Analysis (COA)

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Anodizing of Pure Magnesium in KOH?Aluminate Solutions under Sparking
Khaselev O, et al.
Journal of the Electrochemical Society, 146, 1757-1757 (1999)
Synthesis and characterization of high efficiency and stable Ag3PO4/TiO2 visible light photocatalyst for the degradation of methylene blue and rhodamine B solutions
Yao W, et al.
Journal of Materials Chemistry, 22, 4050-4055 (2012)
Effects of NaAlO2 on structure and corrosion resistance of microarc oxidation coatings formed on AM60B magnesium alloy in phosphate-KOH electrolyte
Liang J, et al.
Surface and Coatings Technology, 199, 121-126 (2005)
Template-Free Hydrothermal Synthesis of CeO2Nano-octahedrons and Nanorods: Investigation of the Morphology Evolution
Lai Y, et al.
Crystal Growth & Design, 8, 1474?1477-1474?1477 (2008)

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