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Metals, alloys and elements

Sodium

Also known as Natrium, sodium atom, Sodium metal

CAS 7440-23-5Formula NaMolar mass 22.99 g/molEC 231-132-9
GHS signal word: Danger. Pictograms: Flammable, Corrosive 101 suppliers listed Drug substance
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Element with atomic number and standard atomic weight

Key facts

What buyers check first

All properties
Appearance
Light, silvery-white metal, body-centered cubic structure, lustrous when freshly cut, ta…
Melting point
97.8 °C
Boiling point
881.4 °C
Density
0.968 g/cm³ at 20 °C
Solubility
Solubility in water: reaction
HS code
280511
Category
Metals, alloys and elements
UN number
UN 1428
Illustrative photo, grey powder in an open woven sack in a warehouse
Typical packagingIllustrative packaging image, not the actual product

What is Sodium?

Plain description, key identifiers and synonyms

Sodium atom is an alkali metal atom. It has a role as a macronutrient and a Saccharomyces cerevisiae metabolite.

Sodium is a chemical element with symbol Na and atomic number 11.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
sodium
CAS number
7440-23-5 CAS number cross-checkedOther or deprecated CAS: 116001-96-8
EC numbers
231-132-9, 231-587-3
Molecular formula
Na
UNII
23J3BHR95O, 9NEZ333N27
MDL number
MFCD00003471, MFCD00085307
InChIKey
KEAYESYHFKHZAL-UHFFFAOYSA-N
InChI
InChI=1S/Na
SMILES (canonical and isomeric)
[Na]

Synonyms

  • Natrium
  • sodium atom
  • Sodium metal
  • Sodio
  • Ion Level, Sodium
  • Level, Sodium Ion
  • Sodium 23
  • Sodium (NOS)
  • Sodalite 8149
  • Gmw vitapet water
  • Na
  • sodium(1+) ion
  • Sodium-23
  • Sodium standard
  • Na Standard Solution
  • Natrium, Sodio, Sodium metal,
  • Sodium Standard: Na+ @ 100 microg/mL in H2O
  • ICP standard Sodium 2-5% HNO3 1000 microg/mL
  • Sodium - Na @ 1000 microg/g in Hydrocarbon Oil
  • Sodium - Na @ 5000 microg/g in Hydrocarbon Oil
  • Sodium Standard: Na+ @ 1000 microg/mL in H2O
  • Sodium Standard: Na @ 1000 microg/mL in 5% HNO3
  • Sodium Standard: Na @ 10000 microg/mL in 5% HNO3
  • Sodium AA Standard: Na @ 1000 microg/mL in 5% HNO3
  • monosodium
Show all 38 synonyms
  • mono sodium
  • mono-sodium
  • Sodium element
  • Element Sodium
  • Element:Sodium
  • Sodium ingot
  • Element-Na
  • Element:Na
  • Sodium (atomic)
  • AMG 386
  • Sodium (element)
  • 23Na isotope
  • Na (element)

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

Appearance
Light, silvery-white metal, body-centered cubic structure, lustrous when freshly cut, tarnishes on exposure to airexp.
Melting point
97.8 °Cexp.
Boiling point
881.4 °Cexp.
Density
0.968 g/cm³ at 20 °Cexp.
Autoignition temperature
>115exp.
Solubility
Solubility in water: reactionexp.
Vapour pressure
0.000185 Pa (1.39 × 10⁻⁶ mm Hg) at 400 K (127 °C), 5.60 Pa (0.042 mm Hg) at 600 K (327 °C)exp.

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
22.99 g/molcalc.
Exact mass
22.9898 Dacalc.
LogP (octanol/water)
-0.38calc.
Topological polar surface area
0 Ųcalc.
Hydrogen bond donors
0calc.
Hydrogen bond acceptors
0calc.
Rotatable bonds
0calc.
Heavy atoms
1calc.
Rings
0calc.
Aromatic rings
0calc.
Fraction sp3 carbons
0calc.
Formal charge
0calc.
Stereocentres
0calc.

Calculated for screening. Confirm critical figures with the supplier.

Safety and hazards

GHS classification summary, not a safety data sheet

GHS signal word
Danger
GHS02: Flammable
Flammable
GHS05: Corrosive
Corrosive

Hazard statements

  • H260In contact with water releases flammable gases which may ignite spontaneously.
  • H314Causes severe skin burns and eye damage.
Precautionary statements (17)
  • P223Do not allow contact with water.
  • P231 + P232Handle and store contents under inert gas. Protect from moisture.
  • P260Do not breathe dust, fume, gas, mist, vapours or spray.
  • P264Wash skin thoroughly after handling.
  • P280Wear protective gloves, protective clothing, eye protection and face protection.
  • P301 + P330 + P331If swallowed: Rinse mouth. Do not induce vomiting.
  • P302 + P335 + P334If on skin: Brush off loose particles from skin. Immerse in cool water or wrap in wet bandages.
  • P302 + P361 + P354If on skin: Take off immediately all contaminated clothing. Immediately rinse with water for several minutes.
  • P304 + P340If inhaled: Remove person to fresh air and keep comfortable for breathing.
  • P305 + P354 + P338If in eyes: Immediately rinse with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
  • P316Get emergency medical help immediately.
  • P321Specific treatment (see supplemental first aid instructions on the label).
  • P363Wash contaminated clothing before reuse.
  • P370 + P378In case of fire: Use appropriate media to extinguish.
  • P402 + P404Store in a dry place. Store in a closed container.
  • P405Store locked up.
  • P501Dispose of contents and container in accordance with local regulations.
UN number
UN 1428
Transport hazard class
4.3
Packing group
I

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 aid

Sodium suppliers

Sponsored listings first, then the documented ranking: membership, verification, replies, completeness, freshness and ratings

All 101 suppliers
30 of 30 offers

Suppliers marked Unclaimed profile have not claimed their profile yet. They are not verified by CompoundList, their offers are price on request and details may have changed, so please confirm them with the supplier. Company representatives can claim a profile with a business email on the company's own website domain. Our team verifies each claim and sends the result by email.

Where suppliers are based

101 suppliers in 14 countries

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Sodium 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

Manufacture of sodium cmpd, such as cyanide, azide, peroxide, etc, in manufacture of tetraethyl lead, in org syntheses, for photoelectric cells, in sodium lamps, alloyed with potassium in heat transfer media.

Improve structure of certain alloys, to descale metal, to purify molten metals, in reduction of org esters.

Chemical intermediate for sodium hydride, chemical int & catalyst in numerous misc applications, reducing agent for metals.

Laboratory reagent, coolant in nuclear reactors, electric power cable (encased in polyethylene), radioactive forms in tracer studies & medicine, heat transfer agent in solar-powered electric generators.

Industrial uses: Flame retardant, Catalyst, Reducing agent, Intermediate, Pigment, Etching agent, Flocculating agent.

Consumer uses: Flame retardant, Flocculating agent, Alloys, Other.

Roles

  • Saccharomyces cerevisiae metabolite
  • eukaryotic metabolite
  • food component
  • fungal metabolite
  • macronutrient
  • metabolite
  • nutrient
  • physiological role

Functional uses

  • Dye

Pharmacology

Sodium is an element with atomic symbol Na, atomic number 11, and atomic weight 23.

How it is made

Electrolysis of a fused mixture of sodium chloride & calcium chloride.

Prepared by ... Electrolysis of fused sodium hydroxide.

Regulatory status

Inventories, regulations and trade controls that list this substance

Europe

  • EU harmonised classification (CLP Annex VI)
    Index no: 011-001-00-0

Health and food

  • Active ingredient in FDA approved drug labels

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 Sodium is traded under.

HS 2805.11Exact HS code

Alkali or alkali-earth metals: sodium

World exports in 2024
$55.1M
−24.0% vs 2023, imports $55.4M
2019 to 2024
Top exporters
  1. France * partner reported54.7%
  2. China36.8%
  3. United States3.2%
Top importers
  1. United States37.3%
  2. India * partner reported15.0%
  3. Japan13.8%

* Partner reported figures, a lower bound.

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

The HS code shown for Sodium is indicative (it was matched by name in the HS nomenclature). Confirm the classification with your customs broker before shipping.

Frequently asked questions

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

What is Sodium?

Sodium atom is an alkali metal atom. It has a role as a macronutrient and a Saccharomyces cerevisiae metabolite.

What is the CAS number of Sodium?

The CAS registry number of Sodium is 7440-23-5. Other or deprecated CAS numbers: 116001-96-8.

What is the molecular formula and weight of Sodium?

The molecular formula of Sodium is Na and its molar mass is 22.99 g/mol.

What is Sodium used for?

Manufacture of sodium cmpd, such as cyanide, azide, peroxide, etc, in manufacture of tetraethyl lead, in org syntheses, for photoelectric cells, in sodium lamps, alloyed with potassium in heat transfer media. Improve structure of certain alloys, to descale metal, to purify molten metals, in reduction of org esters.

Is Sodium hazardous?

Sodium carries the GHS signal word "Danger". Main hazards: in contact with water releases flammable gases which may ignite spontaneously, causes severe skin burns and eye damage. This summary is not an SDS, always read the supplier safety data sheet.

What is the HS code of Sodium?

Sodium is usually classified under HS code 280511 (Sodium). This is indicative, confirm it with your customs broker before shipping.

Where can I buy Sodium?

CompoundList lists 101 suppliers of Sodium in India, United States, China, Germany and 10 more. Send one free request to get and compare quotes. Your contact details stay private until you accept a quote.

Where can I buy Sodium in India?

29 suppliers in India list Sodium on CompoundList. Filter the suppliers list by country and send a request to compare prices, grades and delivery times.

What is the price of Sodium?

Suppliers quote Sodium 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 Sodium

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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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