Sodium monoxide
Also known as Sodium oxide (NaO), Sodium monoxide, (solid), Monoxido de sodio
Key facts
What buyers check first
- Physical form
- Granules
- Density
- 2.27 @25 °C
- HS code
- 281511
- Category
- Hydroxides and bases
- UN number
- UN 1825

What is Sodium monoxide?
Plain description, key identifiers and synonyms
Sodium monoxide appears as a white granular material. It reacts with water to give sodium hydroxide with the evolution of heat. It is corrosive to metals and tissue. It is used in chemical manufacture.
Identifiers
Registry numbers, names and line notations, tap to copy
- IUPAC name
- disodium, hydroxide
- CAS number
- 12401-86-4 CAS number cross-checked
- EC number
- 235-641-7
- Molecular formula
- HNa2O+
- InChIKey
- NTGONJLAOZZDJO-UHFFFAOYSA-M
- InChI
- InChI=1S/2Na.H2O/h;;1H2/q2*+1;/p-1
- SMILES (canonical and isomeric)
- [OH-].[Na+].[Na+]
Synonyms
- Sodium oxide (NaO)
- Sodium monoxide, (solid)
- Monoxido de sodio
- Monoxyde de sodium
- Monoxido de sodio (Spanish DOT)
- Monoxyde de sodium (French DOT)
- disodium, hydroxide
- Sodium Hydroxide (1mol/L in Water)
- Sodium monoxide [UN1825] [Corrosive]
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
| Physical form | Granulesexp.Measured value |
|---|---|
| Density | 2.27 @25 °Cexp.Measured value |
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 | 62.99 g/molcalc.Computed value |
|---|---|
| Exact mass | 62.9817 Dacalc.Computed value |
| LogP (octanol/water) | -6.17calc.Computed value |
| Topological polar surface area | 30 Ųcalc.Computed value |
| Hydrogen bond donors | 0calc.Computed value |
| Hydrogen bond acceptors | 1calc.Computed value |
| Rotatable bonds | 0calc.Computed value |
| Heavy atoms | 3calc.Computed value |
| Rings | 0calc.Computed value |
| Aromatic rings | 0calc.Computed value |
| Fraction sp3 carbons | 0calc.Computed value |
| Formal charge | 1calc.Computed value |
| Stereocentres | 0calc.Computed value |
| Components | 3calc.Computed value |
Calculated for screening. Confirm critical figures with the supplier.
Safety and hazards
GHS classification summary, not a safety data sheet
- UN number
- UN 1825
- Transport hazard class
- 8
GHS classification summary, not a safety data sheet (SDS). Classifications can differ by supplier, grade and concentration. Always check the supplier's SDS.
Full safety data and first aidSodium monoxide suppliers
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Sodium monoxide price
Indicative price range per kg from live supplier offers
Suppliers quote this chemical on request. Send one free request and compare quotes side by side.
Uses and applications
What the substance is used for, by industry and function
Industries and functions
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 Sodium monoxide is traded under.
Sodium hydroxide (caustic soda), solid
- Indonesia8.6%
- United States5.8%
- Turkey3.8%
* Partner reported figures, a lower bound.
The HS code shown for Sodium monoxide is indicative (it was assigned by structure rules). Confirm the classification with your customs broker before shipping.
Frequently asked questions
Quick answers about Sodium monoxide, based on the data on this page
What is Sodium monoxide?
What is the CAS number of Sodium monoxide?
What is the molecular formula and weight of Sodium monoxide?
What is Sodium monoxide used for?
Is Sodium monoxide hazardous?
What is the HS code of Sodium monoxide?
Where can I buy Sodium monoxide?
What is the price of Sodium monoxide?
Guides for buyers
Practical guides that help when you source, ship or handle Sodium monoxide
- Article, SourcingHow to write an RFQ that gets fast and accurate quotesWhat suppliers need to quote quickly and comparably: exact product identity, quantity and packing, delivery terms, documents, samples and payment, with a ready to use template.Read
- Guide, Trade and logisticsShipping dangerous goods: UN numbers, classes and packing groupsHow the UN dangerous goods system works for chemicals, from the nine classes and UN numbers to packing groups, UN packaging marks, labels, documents and segregation.Read
- Guide, Trade and logisticsHS codes for chemicals and why they matterHow the Harmonized System classifies chemicals, the chapters that matter, the rules for chemically defined compounds and mixtures, and practical steps to find the right code.Read
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