Sodium tetraborate

CAS Registry Number®

1330-43-4
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CAS Name

Sodium tetraborate

Molecular Formula

B4Na2O7

Cite this Page

Sodium tetraborate.   CAS Common Chemistry.   CAS, a division of the American Chemical Society, n.d.   http://commonchemistry.cas.org/detail?ref=1330-43-4 (retrieved 2021-10-19) (CAS RN: 1330-43-4).  Licensed under the Attribution-Noncommercial 4.0 International License (CC BY-NC 4.0).

Compound Properties

  • Melting Point (1)

    741 °C
  • Density (1)

    2.367 g/cm3

Source(s)

  • (1) Hazardous Substances Data Bank data were obtained from the National Library of Medicine (US)

Other Names and Identifiers

Other Names for this Substance

  • Boron sodium oxide (B4Na2O7)
  • Sodium tetraborate (Na2B4O7)
  • Boric acid (H2B4O7), disodium salt
  • Anhydrous borax
  • Borax glass

Deleted or Replaced CAS Registry Numbers

1332-28-1, 12045-54-4, 12589-17-2, 13764-83-5, 19223-62-2, 37199-25-0, 115372-65-1, 136349-33-2, 163701-93-7, 886584-11-8, 910783-70-9, 950582-57-7, 1039387-27-3, 1186126-93-1, 1189141-72-7, 1242163-02-5, 1247014-60-3, 1262222-67-2, 1262281-53-7, 1268472-42-9, 1314012-56-0, 1315317-92-0, 2123562-10-5, 2407294-88-4, 2648563-35-1