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Safety Information

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:
1341-49-7
Molecular Weight:
57.04
EC Number:
215-676-4
MDL number:
MFCD00012018
UNSPSC Code:
12352302
PubChem Substance ID:
57646689

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
GHS06,GHS05

Signal Word

Danger

Hazard Statements

H301,H314

Hazard Classifications

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

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)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Regulatory Information

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Certificates of Analysis (COA)

Lot/Batch Number
50590
40920
20800
10290

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