Diphosphoric acid, 98%

About Diphosphoric acid, 98%

Diphosphoric acid is an inorganic reagent (Synthesis grade) carrying the CAS registry number 2466-09-3 at a purity of 98%. The compound has the formula H4O7P2, corresponding to a molecular weight of 177.98 g/mol. Systematically, it is named phosphono dihydrogen phosphate. It is also known as Pyrophosphoric acid or Phosphonooxyphosphonic acid.

In its supplied form it is a white to colourless to black crystals to solid to liquid. Reported physical data include a melting point of 61 °C. Store sealed in a dry, well-ventilated location away from incompatible materials. It carries the GHS signal word “Danger” with 3 hazard statements. Review the Safety Data Sheet before use.

Typical applications include materials research and chemical synthesis. Typical end-use sectors are academic and industrial research.

Standard pack sizes are 100 g, 500 g, 1 kg and 4 x 25 kg, and every batch ships with a Certificate of Analysis (COA) and we export worldwide.

Typical applications

Materials research
Chemical synthesis

Industries

Specifications & identifiers

Chemical identifiers
Product name	Diphosphoric acid, 98%
Catalogue No.	VQ-016004
CAS Number	2466-09-3
IUPAC name	phosphono dihydrogen phosphate
Molecular formula	H₄O₇P₂
Molecular weight	177.98 g/mol
Exact mass	177.9432
Grade	Synthesis
Purity / assay	98%
HSN code	28092010
InChIKey	XPPKVPWEQAFLFU-UHFFFAOYSA-N
SMILES	OP(=O)(O)OP(=O)(O)O
PubChem CID	1023

Physical properties
Physical form	Crystalline
Appearance	White to colourless to black crystals to solid to liquid
Melting point	61 °C
LogP (XLogP3)	-3.2
H-bond donors / acceptors	4 / 7
TPSA	124 Å²
UN number	UN 3260
Synonyms	Pyrophosphoric acid, Phosphonooxyphosphonic acid, (phosphonooxy)phosphonic acid, H4P2O7, Pyrophosphoric Acid (Technical Grade), acide diphosphorique, pyrophosphate TMS4, (P2O74-)Diphosphate, Oxy-1,1-diphosphonic acid, Pyrophosphoric acid, technical grade, mu-oxido-bis(dihydroxidooxidophosphorus)

Safety & hazard information (GHS)

Corrosive

Harmful / irritant

Signal word: Danger

Hazard statements

H302Harmful if swallowed
H314Causes severe skin burns and eye damage
H318Causes serious eye damage

Precautionary statements: P260, P264, P264 + P265, P270, P280, P301 + P317, P301 + P330 + P331, P302 + P361 + P354, P304 + P340, P305 + P354 + P338, P316, P317, P321, P330, P363, P405, P501

Classification is indicative (aggregated GHS notifications) and may vary by grade and concentration. Always refer to the SDS supplied with your lot.

Documents

Safety Data Sheet (SDS)16-section GHS · on request Certificate of AnalysisTypical / batch COA · on request Specification sheetTDS / MOA · on request

Frequently asked questions

What is the CAS number of Diphosphoric acid, 98%?

The CAS Registry Number of Diphosphoric acid, 98% is 2466-09-3. It is also known as Pyrophosphoric acid, Phosphonooxyphosphonic acid, (phosphonooxy)phosphonic acid.

What is the molecular formula and molecular weight of Diphosphoric acid, 98%?

Diphosphoric acid, 98% has the molecular formula H4O7P2 and a molecular weight of 177.98 g/mol. Its IUPAC name is phosphono dihydrogen phosphate.

Which grade and pack sizes of Diphosphoric acid, 98% can I order?

We supply Diphosphoric acid, 98% in Synthesis (98%) grade, in 100 g, 500 g, 1 kg, 4 x 25 kg packs. Larger bulk quantities and custom packing are quoted on request.

Do you provide a COA and SDS with Diphosphoric acid, 98%?

Yes. Every lot of Diphosphoric acid, 98% is shipped with a batch-specific Certificate of Analysis, and a 16-section GHS Safety Data Sheet is provided with the quotation and the shipment.

Can Diphosphoric acid, 98% be shipped internationally?

Yes. Diphosphoric acid, 98% is classified as hazardous (UN 3260), so it is packed in UN-approved packaging and shipped as dangerous goods under IATA/IMDG rules. We export worldwide on EXW, FOB, CIF and DAP terms.