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CAS No 1303-86-2 , Boron oxide

  • Name: Boron oxide
  • Synonyms: Diboron trioxide; Boric oxide;Boric oxide;Boron oxide; Boron trioxide; Boron oxide;
  • CAS Registry Number:
  • Melting Point: 450 ºC
  • Boiling Point: 1860 ºC
  • Density: 2.46
  • Water Solubility: 36 G/L (25 ºC)
  • Safety Statements: R36/37/38
  • Hazard Symbols: Xi: Irritant;
  • HS Code: 28100010
  • EINECS: 215-125-8
  • Molecular Weight: 69.62
  • InChI: InChI=1/B2O3/c3-1-5-2-4
  • Risk Statements: S26;S37/39
  • Molecular Formula: B2O3
  • Molecular Structure:CAS No:1303-86-2 Boron oxide

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1303-86-2 Boron oxide; (99.9%-B)

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References of Boron oxide
Title: Boric Anhydride
CAS Registry Number: 1303-86-2
CAS Name: Boron oxide
Synonyms: boron trioxide; boric oxide; boron sesquioxide
Molecular Formula: B2O3
Molecular Weight: 69.62
Percent Composition: B 31.06%, O 68.94%
Literature References: Prepn of crystalline form: McCulloch, J. Am. Chem. Soc. 59, 2650 (1937). Review of toxicology and human exposure: Toxicological Profile for Boron (PB93-110674, 1992) 110 pp.
Properties: Colorless, brittle, vitreous, semitransparent, hygroscopic lumps or hard, white crystals. d (amorph) 1.8; d (cryst) 2.46. mp (cryst) 450°. Slowly sol in 30 parts cold, or 5 parts boiling water; sol in alcohol, glycerol. Keep dry.
Melting point: mp (cryst) 450°
Density: d (amorph) 1.8; d (cryst) 2.46
NOTE: Has been improperly called anhydrous boric acid or fused boric acid.
CAUTION: Potential symptoms of overexposure are irritation of eyes, skin, respiratory system; cough; conjunctivitis; skin erythema. See NIOSH Pocket Guide to Chemical Hazards (DHHS/NIOSH 97-140, 1997) p 30.
Use: In metallurgy; in analysis of silicates to determine SiO2 and alkalies; in blowpipe analysis.