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Hydroxides and bases

Trisodium oxide

CAS 87331-12-2Formula HNa3O+Molar mass 85.98 g/mol
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Trisodium oxide chemical structure, HNa3O+, CAS 87331-12-2
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
87331-12-2
Formula
HNa3O+
Molar mass
85.98 g/mol
HS code
281511
Category
Hydroxides and bases

What is Trisodium oxide?

Plain description, key identifiers and synonyms

Trisodium oxide is a chemical substance with the molecular formula HNa3O+ and a molar mass of 85.98 g/mol. Its CAS registry number is 87331-12-2.

Identifiers

Registry numbers, names and line notations, tap to copy

CAS number
87331-12-2
Molecular formula
HNa3O+
InChIKey
QCELJRUXBHRLJH-UHFFFAOYSA-M
InChI
InChI=1S/3Na.H2O/h;;;1H2/q;2*+1;/p-1
SMILES (canonical and isomeric)
[OH-].[Na].[Na+].[Na+]

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
85.98 g/molcalc.
Exact mass
85.9715 Dacalc.
LogP (octanol/water)
-6.55calc.
Topological polar surface area
30 Ųcalc.
Hydrogen bond donors
0calc.
Hydrogen bond acceptors
1calc.
Rotatable bonds
0calc.
Heavy atoms
4calc.
Rings
0calc.
Aromatic rings
0calc.
Fraction sp3 carbons
0calc.
Formal charge
1calc.
Stereocentres
0calc.
Components
4calc.

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.

Trisodium oxide suppliers

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Trisodium oxide 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

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 Trisodium oxide is traded under.

HS 2815.11Indicative HS code

Sodium hydroxide (caustic soda), solid

World exports in 2024
$531M
−18.1% vs 2023, imports $637M
2019 to 2024
Top exporters
  1. China43.5%
  2. India * partner reported7.7%
  3. Thailand6.0%
Top importers
  1. Indonesia8.6%
  2. United States5.8%
  3. Turkey3.8%

* Partner reported figures, a lower bound.

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

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

Frequently asked questions

Quick answers about Trisodium oxide, based on the data on this page

What is Trisodium oxide?

Trisodium oxide is a chemical substance with the molecular formula HNa3O+ and a molar mass of 85.98 g/mol. Its CAS registry number is 87331-12-2.

What is the CAS number of Trisodium oxide?

The CAS registry number of Trisodium oxide is 87331-12-2.

What is the molecular formula and weight of Trisodium oxide?

The molecular formula of Trisodium oxide is HNa3O+ and its molar mass is 85.98 g/mol.

What is Trisodium oxide used for?

Known uses and roles of Trisodium oxide include acids and alkalis in home care and cleaning.

Is Trisodium oxide hazardous?

No GHS hazard classification for Trisodium oxide 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 Trisodium oxide?

Trisodium oxide is usually classified under HS code 281511 (Sodium hydroxide (caustic soda), solid). This is indicative, confirm it with your customs broker before shipping.

Where can I buy Trisodium oxide?

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What is the price of Trisodium oxide?

Suppliers quote Trisodium oxide 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 Trisodium oxide

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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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