氟化钠

等级

ACS reagent

质量水平

300

Agency

reag. ISO
reag. Ph. Eur.

蒸汽压

1 hPa ( 1077 °C)

产品线

EMSURE^®

检测方案

≥99.5% (precipitation titration)

形式

crystals

效能

148.5 mg/kg LD₅₀, oral (Rat)

杂质

≤0.01% In water insoluble matter
≤0.04% Free alkali (as NaOH)
≤0.05% Free acid (as hydrofloric acid)

缺失

≤0.2% loss on drying, 150 °C, 4 h

pH值（酸碱度）

10.2 (20 °C, 40 g/L in H₂O)

mp

996 °C

密度

2.8 g/cm³ at 20 °C

痕量阴离子

chloride (Cl^-): ≤0.003%
hexafluorosilicate (SiF₆^2-): ≤0.075%
sulfate (SO₄^2-): ≤0.01%
sulfite (SO₃^2-): ≤0.005%

痕量阳离子

Ca: ≤0.004%
Cu: ≤0.0002%
Fe: ≤0.002%
K: ≤0.02%
excess alkali (as NaOH): ≤0.04%
heavy metals (as Pb): ≤0.001%

储存温度

2-30°C

InChI

1S/FH.Na/h1H;/q;+1/p-1

InChI key

PUZPDOWCWNUUKD-UHFFFAOYSA-M