Sodium phosphate tribasic hexahydrate

CAS 15819-50-8Na3PO4 · 6H2OSalts

Sodium phosphate tribasic hexahydrate (CAS: 15819-50-8; Na3PO4 · 6H2O) is an inorganic compound with a molecular weight of 272.03. This crystalline solid, often supplied as a purum p.a. grade with an assay of ≥97.0% (T), functions as a versatile chemical reagent. It is primarily utilised in laboratory settings for analytical procedures, as a buffering agent in chemical synthesis, and in various research applications requiring a tribasic sodium phosphate source.

IUPAC: Trisodium phosphate hexahydrate

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Sodium phosphate tribasic hexahydrate (Na3PO4 · 6H2O) — chemical structure, CAS 15819-50-8; Chemistry, fine chemical supplied by Tech Serve Solutions

Essential ChemicalsResearch EssentialsSaltsSodium Salts

01 /Applications

Laboratory Reagent

Used as a standard laboratory reagent for various analytical and preparative chemistry applications. Its properties make it suitable for use in titration and as a component in buffer solutions.

Chemical Synthesis

Serves as a reactant or pH modifier in diverse chemical synthesis pathways. It can be employed to control alkalinity or to introduce phosphate moieties in organic and inorganic reactions.

Research and Development

A valuable compound in research settings for exploring new chemical reactions, material science applications, and biochemical studies. Its defined purity supports reproducible experimental outcomes.

02 /Properties

Molecular weight	272.03
Linear formula	Na3PO4 · 6H2O
Assay	≥97.0% (T)
Grade	purum p.a.

03 /Safety & handling

GHS hazard pictogram: Corrosive (GHS05) — Corrosive

Danger

Hazard statements

H314Causes severe skin burns and eye damage

Precautionary statements

P280Wear protective gloves, clothing and eye/face protection
P305IF IN EYES
P310Immediately call a POISON CENTER or doctor

Protective equipment	Eyeshields, Faceshields, full-face particle respirator type N100 (US), Gloves, respirator cartridge type N100 (US), type P1 (EN143) respirator filter, type P3 (EN 143) respirator cartridges
Transport (UN / ADR)	UN 3262 8 / PGIII
Water hazard class (WGK, DE)	3
Hazard codes (EU)	C
Risk statements (R)	34
Safety statements (S)	26-36/37/39-45
Cation traces	Ca: ≤50 mg/kgCd: ≤50 mg/kgCo: ≤50 mg/kgCu: ≤50 mg/kgFe: ≤50 mg/kgK: ≤100 mg/kgNi: ≤50 mg/kgPb: ≤50 mg/kgZn: ≤50 mg/kg
Anion traces	chloride (Cl-): ≤50 mg/kgfluoride (F-): ≤50 mg/kgsulfate (SO42-): ≤50 mg/kg

Hazard information is provided for guidance. Always consult the product Safety Data Sheet (SDS), available on request, before handling.

04 /Identifiers & registry

CAS number

15819-50-8

MDL number

MFCD00210071

05 /Quality & supply

Documentation

Every batch ships with a Certificate of Analysis covering assay, identity and purity; the grade is confirmed against your enquiry. Safety Data Sheets and technical data sheets are available on request.

Supply & logistics

Samples for technical evaluation; bulk MOQ by grade and packaging. In-stock material ships in 7–10 working days, worldwide, with full export documentation.

06 /Frequently asked questions

What is Sodium phosphate tribasic hexahydrate used for?

Sodium phosphate tribasic hexahydrate (CAS: 15819-50-8) is used as a laboratory reagent, in chemical synthesis, and for research and development purposes.

What are the CAS number and chemical formula?

The CAS number is 15819-50-8, and the chemical formula is Na3PO4 · 6H2O.

What grade and purity does Tech Serve Solutions supply?

Tech Serve Solutions supplies Sodium phosphate tribasic hexahydrate in purum p.a. grade with an assay of ≥97.0% (T). We do not represent this product as USP, BP, or EP grade.

How should Sodium phosphate tribasic hexahydrate be handled?

This compound is classified as Danger, causing severe skin burns and eye damage (H314). Appropriate personal protective equipment, including eyeshields, faceshields, gloves, and suitable respiratory protection, must be used. Handle with extreme caution to avoid contact.