1.10783

Spectromelt^® A 10

for X-ray fluorescence analysis, (di-lithium tetraborate)

• Empirical Formula (Hill Notation): B₄Li₂O₇
• CAS Number: 12007-60-2
• Molecular Weight: 169.12
• UNSPSC Code: 12352302
• EC Index Number: 234-514-3
• NACRES: NA.21
• MDL number: MFCD00011083
• Assay: ≥99.0% (acidimetric)
• Form: solid
• Solubility: 141.2 g/L

Properties

• Quality Segment: 100
• assay: ≥99.0% (acidimetric)
• form: solid
• pH: 9.1 (20 °C, 100 g/L in H₂O, slurry)
• mp: 930 °C
• solubility: 141.2 g/L
• density: 2.35 g/cm³ at 20 °C
• bulk density: 330 kg/m³
• anion traces: chloride (Cl^-): ≤50 ppm, phosphate (PO₄^3-): ≤20 ppm, silicate (as SiO₂): ≤100 ppm, sulfate (SO₄^2-): ≤50 ppm
• cation traces: Ag: ≤5 ppm, Al: ≤10, Ba: ≤5 ppm, Ca: ≤20 ppm, Cd: ≤5 ppm, Co: ≤5 ppm, Cr: ≤5 ppm, Cu: ≤5 ppm, Fe: ≤10 ppm, Ga: ≤5 ppm, K: ≤10 ppm, Mg: ≤5 ppm, Mn: ≤5 ppm, Na: ≤20 ppm, Ni: ≤5 ppm, Pb: ≤5 ppm, Sr: ≤5 ppm, Zn: ≤5 ppm
• storage temp.: 2-30°C
• SMILES string: [B].[B].[B].[B].[Li].[Li].O.O.O.O.O.O.O
• InChI: 1S/4B.2Li.7H2O/h;;;;;;7*1H2
• InChI key: DPYKRXYVXDYLEY-UHFFFAOYSA-N

Description

Application

Spectromelt^® A 10, also known as di-lithium tetraborate (Li₂B₄O₇), is a high-purity flux used primarily in X-ray fluorescence (XRF) analysis. Spectromelt^® A 10 can be utilized in:

• X-ray Fluorescence (XRF) Analysis: Used as a flux to prepare samples for XRF analysis. It helps in creating a homogeneous glass bead from the sample, which is essential for accurate and reproducible XRF measurements.
• Sample Preparation: Employed in the fusion of samples, particularly for geological, environmental, and industrial materials to ensure that the sample is evenly distributed and free from matrix effects, which can interfere with the analysis.

Analysis Note

Assay (acidimetric): ≥ 99.0 %
Chloride (Cl): ≤ 50 ppm
Phosphate (PO₄): ≤ 20 ppm
Silicate (SiO₂): ≤ 100 ppm
Sulfate (SO₄): ≤ 50 ppm
Ag (Silver): ≤ 5 ppm
Al (Aluminium): ≤ 10 ppm
Ba (Barium): ≤ 5 ppm
Ca (Calcium): ≤ 20 ppm
Cd (Cadmium): ≤ 5 ppm
Co (Cobalt): ≤ 5 ppm
Cr (Chromium): ≤ 5 ppm
Cu (Copper): ≤ 5 ppm
Fe (Iron): ≤ 10 ppm
Ga (Gallium): ≤ 5 ppm
K (Potassium): ≤ 10 ppm
Mg (Magnesium): ≤ 5 ppm
Mn (Manganese): ≤ 5 ppm
Na (Sodium): ≤ 20 ppm
Ni (Nickel): ≤ 5 ppm
Pb (Lead): ≤ 5 ppm
Sr (Strontium): ≤ 5 ppm
Zn (Zinc): ≤ 5 ppm
Loss on ignition (1000 °C): ≤ 1.0 %
Bulk density: about 50

Other Notes

Replaces: 10783; 10783-3

Legal Information

SPECTROMELT is a registered trademark of Merck KGaA, Darmstadt, Germany

Safety Information

• pictograms: GHS05,GHS07,GHS08
• signalword: Danger
• hcodes: H302 - H318 - H361fd
• pcodes: P201 - P202 - P280 - P301 + P312 - P305 + P351 + P338 - P308 + P313
• Hazard Classifications: Acute Tox. 4 Oral - Eye Dam. 1 - Repr. 2
• Storage Class: 13 - Non Combustible Solids
• wgk: WGK 2
• flash_point_f: Not applicable
• flash_point_c: Not applicable