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216011

Sigma-Aldrich

Ammonium fluoride

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
grade:
ACS reagent
form:
crystals, granules or chunks
Pricing and availability is not currently available.

grade

ACS reagent

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

InChI

1S/FH.H3N/h1H;1H3

InChI key

LDDQLRUQCUTJBB-UHFFFAOYSA-N

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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

6.1C - Combustible acute toxic Cat.3 / toxic compounds or compounds which 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)
Surface analysis of the electropolishing layer on Si (111) in ammonium fluoride solution.
Lewerenz HJ, et al.
Electrochimica Acta, 45(28), 4615-4627 (2000)
On the Etching of Silicon by Oxidants in Ammonium Fluoride Solutions A Mechanistic Study.
Gerischer H and Lubke M.
Journal of the Electrochemical Society, 135(11), 2782-2786 (1988)
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

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  1. How is shipping temperature determined? And how is it related to the product storage temperature?

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    1. Products may be shipped at a different temperature than the recommended long-term storage temperature. If the product quality is sensitive to short-term exposure to conditions other than the recommended long-term storage, it will be shipped on wet or dry-ice. If the product quality is NOT affected by short-term exposure to conditions other than the recommended long-term storage, it will be shipped at ambient temperature. As shipping routes are configured for minimum transit times, shipping at ambient temperature helps control shipping costs for our customers. For more information, please refer to the Storage and Transport Conditions document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/316/622/storage-transport-conditions-mk.pdf

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    1 answer
    1. If this product has an expiration or retest date, it will be shown on the Certificate of Analysis (COA, CofA). If there is no retest or expiration date listed on the product's COA, we do not have suitable stability data to determine a shelf life. For these products, the only date on the COA will be the release date; a retest, expiration, or use-by-date will not be displayed.
      For all products, we recommend handling per defined conditions as printed in our product literature and website product descriptions. We recommend that products should be routinely inspected by customers to ensure they perform as expected.
      For products without retest or expiration dates, our standard warranty of 1 year from the date of shipment is applicable.
      For more information, please refer to the Product Dating Information document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/449/386/product-dating-information-mk.pdf

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