71997

Natriumtetraborat

BioUltra, anhydrous, ≥99%

• Synonym(e): Borax
• Lineare Formel: Na₂B₄O₇
• CAS-Nummer: 1330-43-4
• Molekulargewicht: 201.22
• NACRES: NA.25
• PubChem Substance ID: 329763686
• UNSPSC Code: 12352302
• EC Number: 215-540-4
• MDL number: MFCD00081185
• Assay: ≥99%
• Grade: reagent grade
• Form: crystals
• Solubility: H₂O: 0.1 M at 20 °C, clear, colorless

Eigenschaften

• grade: reagent grade
• Quality Segment: 200
• product line: BioUltra
• assay: ≥99%
• form: crystals
• impurities: insoluble matter, passes filter test
• loss: ≤1% loss on drying, 20 °C (HV)
• pH: 9.0-10.5 (25 °C, 0.1 M in H₂O)
• solubility: H₂O: 0.1 M at 20 °C, clear, colorless
• anion traces: chloride (Cl^-): ≤10 mg/kg, phosphate (PO₄^3-): ≤20 mg/kg, sulfate (SO₄^2-): ≤50 mg/kg
• cation traces: Al: ≤5 mg/kg, As: ≤0.5 mg/kg, Ba: ≤5 mg/kg, Bi: ≤5 mg/kg, Ca: ≤50 mg/kg, Cd: ≤5 mg/kg, Co: ≤5 mg/kg, Cr: ≤5 mg/kg, Cu: ≤5 mg/kg, Fe: ≤5 mg/kg, K: ≤50 mg/kg, Li: ≤5 mg/kg, Mg: ≤5 mg/kg, Mn: ≤5 mg/kg, Mo: ≤5 mg/kg, Ni: ≤5 mg/kg, Pb: ≤5 mg/kg, Sr: ≤5 mg/kg, Zn: ≤5 mg/kg
• λ: 0.1 M in H₂O
• UV absorption: λ: 260 nm A_max: ≤0.020, λ: 280 nm A_max: ≤0.015
• SMILES string: [Na+].[Na+].[O-]B1Ob2ob([O-])ob(O1)o2
• InChI: 1S/B4O7.2Na/c5-1-7-3-9-2(6)10-4(8-1)11-3;;/q-2;2*+1
• InChI key: UQGFMSUEHSUPRD-UHFFFAOYSA-N

Beschreibung

Legal Information

Sicherheitshinweise

• pictograms: GHS08,GHS07
• signalword: Danger
• hcodes: H319,H360FD
• pcodes: P202 - P264 - P280 - P305 + P351 + P338 - P308 + P313 - P337 + P313
• Hazard Classifications: Eye Irrit. 2 - Repr. 1B
• Lagerklasse: 6.1D - Non-combustible acute toxic Cat.3 / toxic hazardous materials or hazardous materials causing chronic effects
• wgk: WGK 1
• flash_point_f: Not applicable
• flash_point_c: Not applicable
• ppe: Eyeshields, Gloves, type P3 (EN 143) respirator cartridges