Skip to content

borax

B4H20Na2O17

Borax has the molecular formula B4H20Na2O17 and a molar mass of 381.4 g/mol.

Properties

Molecular formulaB4H20Na2O17
Molar mass381.4 g/mol
Exact (monoisotopic) mass382.08681 g/mol
Topological polar surface area102 Ų
Hydrogen-bond donors / acceptors10 / 17
Heavy atoms23
InChIKeyCDMADVZSLOHIFP-UHFFFAOYSA-N
IUPAC namedisodium;3,7-dioxido-2,4,6,8,9-pentaoxa-1,3,5,7-tetraborabicyclo[3.3.1]nonane;decahydrate

Elemental composition

43 atoms across 4 elements, by mass.

ElementAtomsPercent by mass
Oxygen (O)1771.32%
Sodium (Na)212.06%
Boron (B)411.34%
Hydrogen (H)205.29%

Calculate with borax

Related compounds

Molar mass and elemental composition are computed from IUPAC 2021 conventional atomic weights. Formula, exact mass and the computed descriptors come from PubChem, which is US government work and in the public domain. Melting point, boiling point and density come from Wikidata under CC0. Properties with no figure shown are absent from those sources rather than zero.