60541

Potassium tetraborate tetrahydrate

purum p.a., ≥99.0% (T)

• Synonym(s): Potassium biborate
• Linear Formula: K₂B₄O₇ · 4H₂O
• CAS Number: 12045-78-2
• Molecular Weight: 305.50
• EC Number: 215-575-5
• MDL number: MFCD00149924
• UNSPSC Code: 12352300
• PubChem Substance ID: 329759057
• NACRES: NA.21

Properties

• grade: purum p.a.
• Assay: ≥99.0% (T)
• form: powder
• anion traces: chloride (Cl^-): ≤50 mg/kg; sulfate (SO₄^2-): ≤50 mg/kg
• cation traces: Ca: ≤50 mg/kg; Cd: ≤50 mg/kg; Co: ≤50 mg/kg; Cu: ≤50 mg/kg; Fe: ≤50 mg/kg; Na: ≤5000 mg/kg; Ni: ≤50 mg/kg; Pb: ≤50 mg/kg; Zn: ≤50 mg/kg
• SMILES string: O.O.O.O.[K+].[K+].[O-]B([O-])OB1OB(OB=O)O1
• InChI: 1S/B4O7.2K.4H2O/c5-1-8-3-10-4(11-3)9-2(6)7;;;;;;/h;;;4*1H2/q-2;2*+1;;;;
• InChI key: FZICZLCGJZRAHS-UHFFFAOYSA-N

Description

General description

Potassium tetraborate tetrahydrate is a hydrated tetraborate salt of potassium. Its crystal structure has been examined. Its crystals belong to the orthorhombic crystal system with space group P2₁2₁2₁. Aqueous solution of potassium tetraborate tetrahydrate on evaporation affords single crystals.

Application

Potassium tetraborate tetrahydrate (K₂B₄O₇.4H₂O) may be employed in the preparation of puffed and dense forms of anhydrous potassium tetraborate (purity = 99.5%, bulk density = 0.4 and 0.7gcm^-3). It may be used for the preparation of saturated K₂B₄O₇ solution required for the quantification of polyamines in various biological samples by HPLC.