Sodium metaborate

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Sodium metaborate
Sodium metaborate structure.svg
Identifiers
  • 98536-58-4 ☑Y
3D model (JSmol)
  • Interactive image
EC Number 231-891-6
PubChem CID
  • 145326
RTECS number ED4640000
Properties
NaBO2
Molar mass 65.80 g/mol
Appearance colorless crystals
Odor odorless
Density 2.46 g/cm3
Melting point 966 °C (1,771 °F; 1,239 K)
Boiling point 1,434 °C (2,613 °F; 1,707 K)
16.4 g/100 mL (0 °C)
28.2 g/100 mL (25 °C)
125.2 g/100 mL (100 °C)
Solubility insoluble in ether, ethanol
Structure
trigonal
Thermochemistry
65.94 J/mol K
73.39 J/mol K
-1059 kJ/mol
Hazards
Lethal dose or concentration (LD, LC):
LD50 (median dose)
2330 mg/kg (rat, oral)
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references

Sodium metaborate (NaBO2) is a colorless solid chemical compound. [1]

Preparation

Sodium metaborate is prepared by the fusion of sodium carbonate and borax. Another way to create the compound is by the fusion of sodium tetraborate with sodium hydroxide at 700° C.

Uses

Sodium metaborate is used in the manufacturing of borosilicate glasses. It is also a component of herbicides and antifreeze.

See also

References

  1. ^ Sodium metaborate at Chemister
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