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Ammonium hydrogen difluoride

99.999% trace metals basis

Synonim(y):

Ammonium bifluoride, Etching powder

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Rozmiar/SKUDostępnośćCena netto
25 g
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511,00 zł
100 g
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1520,00 zł

Informacje o tej pozycji

Wzór liniowy:
NH4HF2
Numer CAS:
Masa cząsteczkowa:
57.04
PubChem Substance ID:
eCl@ss:
38050109
UNSPSC Code:
12352302
NACRES:
NA.23
EC Number:
215-676-4
MDL number:
Assay:
99.999% trace metals basis
Form:
crystalline

511,00 zł


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Quality Segment

assay

99.999% trace metals basis

form

crystalline

impurities

≤15.0 ppm Trace Metal Analysis

mp

125 °C (lit.)

SMILES string

N.F.F

InChI

1S/2FH.H3N/h2*1H;1H3

InChI key

KVBCYCWRDBDGBG-UHFFFAOYSA-N

General description

Ammonium hydrogen difluoride is a white crystalline solid commonly used as an etchant, especially in the semiconductor industry. It has excellent selectivity in etching silicon oxides and metal silicides, making it useful in the manufacturing of semiconductors and microelectronic devices. It can also be used as a fluorinating agent.

Application

Used for the preparation of ammonium aminosilylfluorides and complex metal fluorides. 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
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Ta pozycja
224820437646
description

99.999% trace metals basis

description

reagent grade, 95%

description

granular, 98%

form

crystalline

form

crystals, flakes

form

granular

assay

99.999% trace metals basis

assay

95%

assay

98%

Quality Level

100

Quality Level

100

Quality Level

200

mp

125 °C (lit.)

mp

125 °C (lit.)

mp

-

impurities

≤15.0 ppm Trace Metal Analysis

impurities

-

impurities

-


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Piktogramy

Skull and crossbonesCorrosion

Słowo ostrzegawcze

Danger

Kody zagrożeń

Hazard Classifications

Acute Tox. 3 Oral - Eye Dam. 1 - Skin Corr. 1B

Klasa składowania

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

Co się dzieje?

WGK 1

Temperatura zapłonu (°F)

Not applicable

Temperatura zapłonu (°C)

Not applicable

PPE (środki ochrony indywidualnej)

Eyeshields, Faceshields, Gloves, type P3 (EN 143) respirator cartridges



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Certyfikaty analizy (CoA)

Lot/Batch Number

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Questions

1–2 of 2 Questions  
  1. How can I determine the shelf life / expiration / retest date of this product?

    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/418/501/product-dating-information-06-25-mk.pdf

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

    1 answer
    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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Reviews

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  1. Wichita Falls, Texas
    • Review 1
    • Votes 0
    5 out of 5 stars.

    The material quality was first rate and delivery was fast.

    The material quality was first rate and delivery was fast.

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