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1.06449 Supelco

Sodium fluoride

for analysis EMSURE® ACS,ISO,Reag. Ph Eur

Synonym: Sodium fluoride

  • CAS Number 7681-49-4

  • Empirical Formula (Hill Notation) FNa

  • Molecular Weight 41.99

  •  MDL number MFCD00003524

  •  EC Index Number 231-667-8

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Properties

Quality Level   300
grade   ACS reagent
  Reag. Ph. Eur.
  reag. ISO
vapor pressure   1 hPa ( 1077 °C)
assay   ≥99.5% (precipitation titration)
form   crystals
potency   148.5 mg/kg LD50, oral (Rat)
pH   10.2 (20 °C, 40 g/L in H2O)
mp   996 °C
density   2.8 g/cm3 at 20 °C
anion traces   chloride (Cl-): ≤0.003%
  hexafluorosilicate (SiF62-): ≤0.075%
  sulfate (SO42-): ≤0.01%
  sulfite (SO32-): ≤0.005%
cation traces   Ca: ≤ 0.004%
  Cu: ≤ 0.0002%
  Fe: ≤ 0.002%
  K: ≤ 0.02%
  excess alkali (as NaOH): ≤0.04%
  heavy metals (as Pb): ≤ 0.001%
InChI   1S/FH.Na/h1H;/q;+1/p-1
InChI key   PUZPDOWCWNUUKD-UHFFFAOYSA-M
storage conditions   Store at +5°C to +30°C.

Description

Linkage

Replaces: SX0550-5

Analysis Note

Assay (precipitative titration): ≥ 99.5 %
In water insoluble matter: ≤ 0.01 %
Free alkali (as NaOH): ≤ 0.04 %
Free acid (as hydrofloric acid): ≤ 0.05 %
Chloride (Cl): ≤ 0.003 %
Hexafluorosilicate (SiF₆): ≤ 0.075 %
Sulfate (SO₄): ≤ 0.01 %
Sulfite (SO₃): ≤ 0.005 %
Heavy metals (as Pb): ≤ 0.001 %
Ca (Calcium): ≤ 0.004 %
Cu (Copper): ≤ 0.0002 %
Fe (Iron): ≤ 0.002 %
K (Potassium): ≤ 0.02 %
Loss on drying (150 °C, 4 h): ≤ 0.2 %

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