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216011

Sigma-Aldrich

Ammonium fluoride

Essential Grade

ACS reagent, ≥98.0%

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About This Item

Linear Formula:
NH4F
CAS Number:
Molecular Weight:
37.04
EC Number:
MDL number:
UNSPSC Code:
12352300
eCl@ss:
38050106
PubChem Substance ID:
NACRES:
NA.21

Pricing and availability is not currently available.

grade

ACS reagent

Quality Level

Assay

≥98.0%

form

crystals, granules or chunks

impurities

≤0.005% insolubles

ign. residue

≤0.01%

pH

~6 (20 °C)

anion traces

chloride (Cl-): ≤0.001%
sulfate (SO42-): ≤0.005%

cation traces

Fe: ≤5 ppm
heavy metals (as Pb): ≤5 ppm

SMILES string

N.F

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This Item
1.01164338869402931
Ammonium fluoride ACS reagent, ≥98.0%

216011

Ammonium fluoride

Essential Grade
assay

≥98.0%

assay

≥98.0% (NH4F basis, precipitation titration)

assay

≥99.99% trace metals basis

assay

≥99.0%

grade

ACS reagent

grade

ACS reagent

grade

-

grade

ACS reagent

anion traces

chloride (Cl-): ≤0.001%, sulfate (SO42-): ≤0.005%

anion traces

chloride (Cl-): ≤0.001%, hexafluorosilicate (SiF62-): ≤0.1%, sulfate (SO42-): ≤0.005%

anion traces

-

anion traces

chloride (Cl-): ≤0.005%, sulfate (SO42-): ≤0.005%

impurities

≤0.005% insolubles

impurities

≤0.005% Insoluble matter, ≤0.5% Ammonium hydrogen difluoride, ≤5% Water

impurities

≤100 ppm METAL TRACE ANALYSIS (ICP)

impurities

≤0.01 meq/g Titr. base, ≤0.03 meq/g Titr. acid, ≤0.1% K2SiF6

cation traces

Fe: ≤5 ppm, heavy metals (as Pb): ≤5 ppm

cation traces

Fe: ≤0.0005%, K: ≤0.002%, Na: ≤0.002%, heavy metals (as Pb): ≤0.0005%

cation traces

-

cation traces

Fe: ≤0.001%, Na: ≤0.2%, heavy metals: ≤0.001% (by ICP)

Application

Employed in a new hydrothermal synthesis of complex flourides NaHoF4 and NaEuF4 these interesting compounds have the fluorite structure and are important for solid-state lasers as well as for photoluminescence and magnetic characteristics.[1]

Pictograms

Skull and crossbones

Signal Word

Danger

Hazard Statements

Hazard Classifications

Acute Tox. 3 Dermal - Acute Tox. 3 Inhalation - Acute Tox. 3 Oral

Storage Class Code

6.1D - Non-combustible acute toxic Cat.3 / toxic hazardous materials or hazardous materials causing chronic effects

WGK

WGK 1

Flash Point(F)

does not flash

Flash Point(C)

does not flash


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Phase transition in ammonium fluoride.
Stevenson R.
J. Chem. Phys. , 34(1), 346-347 (1961)
Self-organized TiO2 nanotubes prepared in ammonium fluoride containing acetic acid electrolytes.
Tsuchiya H, et al.
Electrochemical Communications, 7(6), 576-580 (2005)
Jae Hoon Bong et al.
Nanoscale, 6(15), 8503-8508 (2014-06-21)
We report a post-synthetic n-doping method for chemical-vapor-deposition (CVD) grown graphene using wet chemical processing. An ammonium fluoride solution was found effective in converting pristine hole doping into electron doping in addition to the mobility improvement of charge carriers. We
Xun, X. et al.
Chemistry of Materials, 9, 2966-2966 (1997)
Surface analysis of the electropolishing layer on Si (111) in ammonium fluoride solution.
Lewerenz HJ, et al.
Electrochimica Acta, 45(28), 4615-4627 (2000)

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