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01110

Sigma-Aldrich

Ammonium hydrogen difluoride

puriss., ≥97.5%

Synonym(s):

Ammonium bifluoride, Etching powder

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About This Item

Linear Formula:
NH4HF2
CAS Number:
Molecular Weight:
57.04
EC Number:
MDL number:
UNSPSC Code:
12352302
PubChem Substance ID:

grade

puriss.

assay

≥97.5%

impurities

≤0.001% heavy metals (as Pb)
≤0.03% hexafluorosilicate (as (NH4)2SiF6)

mp

125 °C (lit.)

anion traces

chloride (Cl-): ≤50 mg/kg
sulfate (SO42-): ≤50 mg/kg
sulfite (SO32-): ≤50 mg/kg

cation traces

Ca: ≤50 mg/kg
Fe: ≤100 mg/kg
K: ≤50 mg/kg
Mg: ≤50 mg/kg

SMILES string

N.F.F

InChI

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

InChI key

KVBCYCWRDBDGBG-UHFFFAOYSA-N

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pictograms

Skull and crossbonesCorrosion

signalword

Danger

hcodes

Hazard Classifications

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

Storage Class

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

wgk_germany

WGK 1

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

Eyeshields, Faceshields, Gloves, type P2 (EN 143) respirator cartridges, type P3 (EN 143) respirator cartridges


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