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Phosphates and phosphorus salts

Hexametaphosphate

Also known as Metaphosphate (P6O186-), Cyclohexaphosphate, 2,4,6,8,10,12-Hexaoxo-2lambda~5~,4lambda~5~,6lambda~5~,8lambda~5~,10lambda~5~,12lambda~5~-cyclohexaphosphoxane-2,4,6,8,10,12-hexakis(olate)

CAS 13478-98-3Formula O18P6-6Molar mass 473.83 g/mol
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Hexametaphosphate chemical structure, O18P6-6, CAS 13478-98-3
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
13478-98-3
Formula
O18P6-6
Molar mass
473.83 g/mol
HS code
283539
Category
Phosphates and phosphorus salts

What is Hexametaphosphate?

Plain description, key identifiers and synonyms

Hexametaphosphate is a chemical substance with the molecular formula O18P6-6 and a molar mass of 473.83 g/mol. Its CAS registry number is 13478-98-3. The IUPAC name is 2,4,6,8,10,12-hexaoxido-1,3,5,7,9,11-hexaoxa-2λ5,4λ5,6λ5,8λ5,10λ5,12λ5-hexaphosphacyclododecane 2,4,6,8,10,12-hexaoxide.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
2,4,6,8,10,12-hexaoxido-1,3,5,7,9,11-hexaoxa-2λ5,4λ5,6λ5,8λ5,10λ5,12λ5-hexaphosphacyclododecane 2,4,6,8,10,12-hexaoxide
CAS number
13478-98-3 CAS number cross-checked
Molecular formula
O18P6-6
UNII
R2QL4SZ4JM
InChIKey
SZGVJLCXTSBVKL-UHFFFAOYSA-H
InChI
InChI=1S/H6O18P6/c1-19(2)13-20(3,4)15-22(7,8)17-24(11,12)18-23(9,10)16-21(5,6)14-19/h(H,1,2)(H,3,4)(H,5,6)(H,7,8)(H,9,10)(H,11,12)/p-6
SMILES (canonical and isomeric)
[O-]P1(=O)OP(=O)(OP(=O)(OP(=O)(OP(=O)(OP(=O)(O1)[O-])[O-])[O-])[O-])[O-]

Synonyms

  • Metaphosphate (P6O186-)
  • Cyclohexaphosphate
  • 2,4,6,8,10,12-Hexaoxo-2lambda~5~,4lambda~5~,6lambda~5~,8lambda~5~,10lambda~5~,12lambda~5~-cyclohexaphosphoxane-2,4,6,8,10,12-hexakis(olate)

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
473.83 g/molcalc.
Exact mass
473.7543 Dacalc.
LogP (octanol/water)
-3.09calc.
Topological polar surface area
296.2 Ųcalc.
Hydrogen bond donors
0calc.
Hydrogen bond acceptors
18calc.
Rotatable bonds
0calc.
Heavy atoms
24calc.
Rings
1calc.
Aromatic rings
0calc.
Fraction sp3 carbons
0calc.
Formal charge
-6calc.
Stereocentres
0calc.

Calculated for screening. Confirm critical figures with the supplier.

Murcko scaffold

The ring system that remains when every side chain is removed

Murcko scaffold of this chemical, O=[PH]1O[PH](=O)O[PH](=O)O[PH](=O)O[PH](=O)O[PH](=O)O1

O=[PH]1O[PH](=O)O[PH](=O)O[PH](=O)O[PH](=O)O[PH](=O)O1

1 ring, 18 atoms.

3 other chemicals share this scaffold

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.

Hexametaphosphate suppliers

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Where suppliers are based

1 supplier in 1 country

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Hexametaphosphate 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

Applications are not documented for this substance yet. Suppliers often describe uses on their product pages, linked in the suppliers list above.

Regulatory status

Inventories, regulations and trade controls that list this substance

United States

  • TSCA inventory (USA)
    Status: Active in US commerce

HS code and trade data

Customs classification and reported world trade statistics

Global trade

World import and export statistics for the HS code Hexametaphosphate 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 Hexametaphosphate is indicative (it was assigned by structure rules). Confirm the classification with your customs broker before shipping.

Frequently asked questions

Quick answers about Hexametaphosphate, based on the data on this page

What is Hexametaphosphate?

Hexametaphosphate is a chemical substance with the molecular formula O18P6-6 and a molar mass of 473.83 g/mol. Its CAS registry number is 13478-98-3. The IUPAC name is 2,4,6,8,10,12-hexaoxido-1,3,5,7,9,11-hexaoxa-2λ5,4λ5,6λ5,8λ5,10λ5,12λ5-hexaphosphacyclododecane 2,4,6,8,10,12-hexaoxide.

What is the CAS number of Hexametaphosphate?

The CAS registry number of Hexametaphosphate is 13478-98-3.

What is the molecular formula and weight of Hexametaphosphate?

The molecular formula of Hexametaphosphate is O18P6-6 and its molar mass is 473.83 g/mol.

Is Hexametaphosphate hazardous?

No GHS hazard classification for Hexametaphosphate 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 Hexametaphosphate?

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

Where can I buy Hexametaphosphate?

CompoundList lists 1 supplier of Hexametaphosphate in Egypt. Send one free request to get and compare quotes. Your contact details stay private until you accept a quote.

What is the price of Hexametaphosphate?

Suppliers quote Hexametaphosphate 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 Hexametaphosphate

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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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