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Phosphates and phosphorus salts

Diphosphate(1-)

Also known as Diphosphate, trihydrogen, trihydrogen diphosphate, phosphono hydrogen phosphate

CAS 14867-04-0Formula H3O7P2-Molar mass 176.97 g/mol
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Diphosphate(1-) chemical structure, H3O7P2-, CAS 14867-04-0
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
14867-04-0
Formula
H3O7P2-
Molar mass
176.97 g/mol
HS code
283539
Category
Phosphates and phosphorus salts

What is Diphosphate(1-)?

Plain description, key identifiers and synonyms

Diphosphate(1-) is a monovalent inorganic anion obtained by deprotonation of one of the phosphate OH groups in diphosphoric acid. It is a diphosphate ion and a monovalent inorganic anion. It is a conjugate base of a diphosphoric acid. It is a conjugate acid of a diphosphate(2-).

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
phosphono hydrogen phosphate
CAS number
14867-04-0 CAS number cross-checked
Molecular formula
H3O7P2-
InChIKey
XPPKVPWEQAFLFU-UHFFFAOYSA-M
InChI
InChI=1S/H4O7P2/c1-8(2,3)7-9(4,5)6/h(H2,1,2,3)(H2,4,5,6)/p-1
SMILES (canonical and isomeric)
OP(=O)(O)OP(=O)(O)[O-]

Synonyms

  • Diphosphate, trihydrogen
  • trihydrogen diphosphate
  • phosphono hydrogen phosphate
  • diphosphate(1-) anion
  • H3P2O7(-)

Physical and chemical properties

Measured values and descriptors computed from the structure

Physical and chemical properties

Measured values, check the supplier specification for your grade

No measured properties are recorded for this substance yet. Ask suppliers for a technical data sheet.

Values vary by grade. Ask suppliers for the COA or TDS of the batch you buy.

Computed descriptors

Calculated from the structure, useful for screening and formulation

Molecular weight
176.97 g/molcalc.
Exact mass
176.9359 Dacalc.
LogP (octanol/water)
-1.44calc.
Topological polar surface area
127.1 Ųcalc.
Hydrogen bond donors
3calc.
Hydrogen bond acceptors
4calc.
Rotatable bonds
2calc.
Heavy atoms
9calc.
Rings
0calc.
Aromatic rings
0calc.
Fraction sp3 carbons
0calc.
Formal charge
-1calc.
Stereocentres
1calc.

Calculated for screening. Confirm critical figures with the supplier.

Safety and hazards

GHS classification summary, not a safety data sheet

No GHS hazard classification is recorded for this substance yet. That does not mean it is harmless.

GHS classification summary, not a safety data sheet (SDS). Classifications can differ by supplier, grade and concentration. Always check the supplier's SDS.

Diphosphate(1-) suppliers

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Diphosphate(1-) price

Indicative price range per kg from live supplier offers

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Uses and applications

What the substance is used for, by industry and function

Roles

  • Escherichia coli metabolite
  • bacterial metabolite
  • metabolite
  • prokaryotic metabolite

Regulatory status

Inventories, regulations and trade controls that list this substance

No regulatory list memberships are recorded for this substance yet. Always check the rules of the importing and exporting country before trade.

HS code and trade data

Customs classification and reported world trade statistics

Global trade

World import and export statistics for the HS code Diphosphate(1-) is traded under.

HS 2835.39Indicative HS code

Polyphosphates, other

World exports in 2024
$983M
+0.1% vs 2023, imports $980M
2019 to 2024
Top exporters
  1. China35.2%
  2. Germany19.2%
  3. United States9.7%
Top importers
  1. United States10.2%
  2. United Kingdom6.1%
  3. France * partner reported4.5%

* Partner reported figures, a lower bound.

Reported customs values in USD, not prices.Full trade data

The HS code shown for Diphosphate(1-) is indicative (it was assigned by structure rules). Confirm the classification with your customs broker before shipping.

Frequently asked questions

Quick answers about Diphosphate(1-), based on the data on this page

What is Diphosphate(1-)?

Diphosphate(1-) is a monovalent inorganic anion obtained by deprotonation of one of the phosphate OH groups in diphosphoric acid. It is a diphosphate ion and a monovalent inorganic anion. It is a conjugate base of a diphosphoric acid. It is a conjugate acid of a diphosphate(2-).

What is the CAS number of Diphosphate(1-)?

The CAS registry number of Diphosphate(1-) is 14867-04-0.

What is the molecular formula and weight of Diphosphate(1-)?

The molecular formula of Diphosphate(1-) is H3O7P2- and its molar mass is 176.97 g/mol.

What is Diphosphate(1-) used for?

Known uses and roles of Diphosphate(1-) include escherichia coli metabolite, bacterial metabolite, metabolite and prokaryotic metabolite.

Is Diphosphate(1-) hazardous?

No GHS hazard classification for Diphosphate(1-) is recorded on CompoundList yet. That does not prove it is safe. Always read the supplier safety data sheet.

What is the HS code of Diphosphate(1-)?

Diphosphate(1-) is usually classified under HS code 283539 (Polyphosphates, other). This is indicative, confirm it with your customs broker before shipping.

Where can I buy Diphosphate(1-)?

Post a free request on CompoundList and suppliers of Diphosphate(1-) will send you quotes. Your contact details stay private until you accept a quote.

What is the price of Diphosphate(1-)?

Suppliers quote Diphosphate(1-) on request because prices depend on grade, purity, quantity and destination. A free request on CompoundList gets you several quotes to compare.

Guides for buyers

Practical guides that help when you source, ship or handle Diphosphate(1-)

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Data last updated 7 Oct 2026. Details may have changed, please confirm them with the supplier. Report an error on this page
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