Trisodium Phosphate - Materials / Alfa Chemistry

NAVIGATION

Trisodium Phosphate

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Catalog Number

ACMA00014406

Product Name

Trisodium Phosphate

Category

Glass Additives

Description

DryPowder; DryPowder, PelletsLargeCrystals, WetSolid; Liquid; PelletsLargeCrystals;White odourless crystals, granules or crystalline powder;COLOURLESS-TO-WHITE HYGROSCOPIC CRYSTALS.

IUPAC Name

trisodium;phosphate

Molecular Weight

163.941g/mol

Molecular Formula

Anhydrous: Na3PO4; Hydrated: Na3PO4nH₂O (n = 1/2, 1, 6, 8, or 12);Na3PO4;Na3PO4;Na3PO4;Na3O4P

Canonical SMILES

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

InChI

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

InChI Key

RYFMWSXOAZQYPI-UHFFFAOYSA-K

Melting Point

Mp 1583 °;1583 °C

Density

2.54 g/cu cm;Relative density (water = 1): 2.5

Solubility

Freely soluble in water. Insoluble in ethanol;14.5 g/100 g water at 25 °C;25.8 g sol in 100 g water at 20 °C;Qualitative solubility: soluble in water;Solubility in water, g/l at 20 °C: 121 (good)

Application

Trisodium phosphate serves a diverse range of purposes due to its chemical properties as a highly soluble, white, crystalline solid. Its primary applications include functioning as a powerful cleaning agent, degreaser, and stain remover. It proves invaluable in preparing surfaces prior to painting by effectively deglossing and cleaning walls to ensure better paint adhesion. Beyond its use in household and industrial cleaning, trisodium phosphate is employed as a food additive, contributing to acidity regulation and phosphorus fortification, particularly in cereals and cheese sauces. In the plumbing industry, trisodium phosphate is utilized as a flux for hard soldering joints, especially in copper plumbing, owing to its capacity to dissolve copper oxides at high temperatures. Despite its versatility, its strong alkaline nature requires cautious handling, as it can cause severe irritation upon contact with skin or eyes. Additionally, it plays a role in various industrial processes, including metal treatment, paint removal, and water softening, highlighting its multifaceted applications across different fields.

Color/Form

Colorless crystals

Complexity

36.8

Corrosivity

When wet, mild steel or brass may be corroded by trisodium phosphate.

Covalently-Bonded Unit Count

EC Number

231-509-8;268-603-3;231-509-8;619-207-8

Exact Mass

163.922728g/mol

Formal Charge

Heavy Atom Count

ICSC Number

1178

MeSH Entry Terms

dibasic sodium phosphate, anhydrous;disodium acid phosphate;disodium hydrogen phosphate;disodium hydrogen phosphate anhydrous;monosodium dihydrogen phosphate;neutral sodium hydrogen phosphate;phosphoric acid, disodium salt;phosphoric acid, disodium salt, 32P-labeled;phosphoric acid, disodium salt, anhydrous;phosphoric acid, disodium salt, dodecahydrate;phosphoric acid, disodium salt, heptahydrate;phosphoric acid, monosodium salt;phosphoric acid, monosodium salt, anhydrous;phosphoric acid, sodium (2:3) salt;phosphoric acid, sodium salt;phosphoric acid, trisodium salt;phosphoric acid, trisodium salt , 32P-labeled;phosphoric acid, trisodium salt , dodecahydrate;sodium biphosphate;sodium dihydrogen orthophosphate;sodium dihydrogen phosphate;sodium hydrophosphate;sodium phosphate;sodium phosphate monobasic anhydrous;sodium phosphate, dibasic;sodium phosphate, dibasic (anhydrous);sodium phosphate, disodium salt;sodium phosphate, monobasic;sodium phosphate, monobasic anhydrous;sodium phosphate, tribasic;sodium phosphate, tribasic, dodecahydrate;trisodium phosphate;trisodium phosphate dodecahydrate

Monoisotopic Mass

163.922728g/mol

Other Experimental

Crystallizes with 8 and 12 mols of H₂O.;Colorless or white crystals. When rapidly heated melts at about 75 °C. Does not lose the last mol of water even on moderate ignition. Specific gravity 1.6. Soluble in 3.5 parts water, 1 part boiling water; insol in alcohol. /Dodecahydrate/;Colorless, trigonal crystals; MP: approx 75 °C; density: 1.62 g/cu cm; solubility: 14.4 g/100 g water at 25 °C; qualitative solubility: insoluble in ethanol /Trisodium phosphate dodecahydrate/;Trisodium phosphate tends to pick up moisture from air and form a hard cake.

Rotatable Bond Count

RTECS Number

TC9490000

Stability

Rapidly absorbs ... water if exposed to moist atmosphere /Dried sodium phosphate/

UNII

SX01TZO3QZ

UN Number

3262;3082

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