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Sodium metal

Sodium metal

Sodium metal

Sodium metal, available grades: ≥99.5% (Analytical Reagent, Industrial). Class 4.3 (UN 1428, PG I), in China's explosive-precursor catalogue; reacts violently with water releasing hydrogen that may ignite/explode; reacts with oxidizers, acids and halogens; causes severe burns/eye damage (H260/H314); never extinguish with water, foam or CO2 — use dry sand or Class D powder. Used as a reducing/dehalogenating agent in organic synthesis, in NaK alloys and reactor coolants, NaS/Na-ion battery electrodes, sodium lamps, alkoxide/amide preparation.

OEM supported. Custom purity & specifications available, please contact our manager.

Hazard Class:Class 4.3 (Dangerous when wet)
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Specifications

Aliassodium(+1) cation, Sodium standard, Sodium ion(+), Nitrate standard, Sodium (1+), Sodium (Na1+), Sodium cation(1+), Sodium ion (Na1+), Sodium ion(1+), Sodium, ion (Na1+) (8CI,9CI), Sodium-23(1+), 1-Dodecanesulfonic acid sodium salt, SODIUM (+1 ION), Sodium (ion), Sodium(1+), Sodium(1+)ions, sodium(1+) ion, Na(+), sodium cation, Sodium 1-dodecanesulfonate, sodium ion, sodium(I) cation
CAS Number7440-23-5Molecular FormulaNa
Molecular Weight22.98AppearanceSilvery-white soft metal with a metallic lustre, soft enough to cut with a knife; density 0.97 g/cm³, melting point 97.8 °C; lustrous when freshly cut, rapidly tarnishing grey on exposure to air
HS Code2805.11UN Number1428
Density0.971 at 68 °F (USCG, 1999) - Less dense than water; will floatBoiling Point1621 °F at 760 mmHg (USCG, 1999)
Melting Point207.5 °F (USCG, 1999)Flash PointN/A
OriginChinaVapor Pressure1.2 [mmHg]
SolubilityInsoluble in benzene, kerosene, naphthaStorage ConditionUnder inert liquid (mineral oil / liquid petrolatum), away from moisture and air
Packaging500 g / 25 kg / 200 kg / 1 tShelf Life6-24 months
GradeAnalytical Reagent (AR) / Industrial GradeEINECS231-587-3
MDLMFCD00085307China Customs Code2805110000
GHS ClassificationDanger: H260; H314 (reacts violently with water releasing hydrogen)Hazard ClassClass 4.3 (Dangerous when wet)
CategoryExplosive PrecursorsUpdated2026-09-12

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Frequently asked questions about Sodium metal

What is Sodium metal? What is its CAS number?

Sodium metal is an industrial chemical raw material. Its CAS number is 7440-23-5. Its molecular formula is Na, with a molecular weight of 22.98. Common synonyms include sodium(+1) cation, Sodium standard, Sodium ion(+). Typical appearance: Silvery-white soft metal with a metallic lustre, soft enough to cut with a knife; density 0.97 g/cm³, melting point 97.8 °C; lustrous when freshly cut, rapidly tarnishing grey on exposure to air.

What are the synonyms and registry numbers of Sodium metal?

Sodium metal (CAS 7440-23-5) is listed under the following identifiers. Synonyms: sodium(+1) cation, Sodium standard, Sodium ion(+). EINECS number: 231-587-3. MDL number: MFCD00085307.

What documents are provided with Sodium metal (CAS 7440-23-5)?

A Certificate of Analysis (COA) is issued for each batch of Sodium metal. Standard purity grade: Analytical Grade. Safety Data Sheet (MSDS/SDS) and technical data sheet are available on request before ordering.

Is Sodium metal classified as dangerous goods? Which UN number applies?

Transport of Sodium metal (CAS 7440-23-5) is arranged according to its hazardous classification. UN number: 1428. GHS hazard statements: H260, H314. We ship under IMDG (sea), IATA (air) or ADR (road) rules with compliant UN packaging; the final classification is confirmed against the batch test report.

What are the typical physical and chemical properties of Sodium metal?

Typical properties of Sodium metal (CAS 7440-23-5): appearance Silvery-white soft metal with a metallic lustre, soft enough to cut with a knife; density 0.97 g/cm³, melting point 97.8 °C; lustrous when freshly cut, rapidly tarnishing grey on exposure to air; density 0.971 at 68 °F (USCG, 1999) - Less dense than water; will float; melting point 207.5 °F (USCG, 1999); boiling point 1621 °F at 760 mmHg (USCG, 1999); vapor pressure 1.2 [mmHg]; solubility Insoluble in benzene, kerosene, naphtha. These are reference values, not a batch specification.

What is the HS code for Sodium metal?

The HS code for Sodium metal (CAS 7440-23-5) is 2805.11. Customs classification may differ by destination country, so please confirm the final code with us before ordering.
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