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A15806
Nitrosonium tetrafluoroborate, 98%

CAS: 14635-75-7 MDL: MFCD00011433  EINECS: 238-679-2
UN#:UN3260Hazard Class:8Packing Group:II
Alternate Name: Nitrosyl tetrafluoroborate

 

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Chemical Properties

Formula: NOBF4  Boiling point: 250°/0.01mm subl.
Formula weight: 116.82  Density: 2.185
Melting point: 250° subl. Sensitivity: Moisture Sensitive

Literature References

Crystalline nitrosating agent: Secondary amines to nitrosamines: Chem. Ber., 89, 2374 (1956); deamination of primary amides: J. Org. Chem., 30, 2386 (1965); conversion of arylhydrazines to azides: Tetrahedron Lett., 28, 5091 (1987). In organic solvents, converts arylamines directly to diazonium tetrafluoroborates which undergo the Balz-Schiemann reaction (see Tetrafluoroboric acid, L14037) in situ to give high yields of aryl fluorides: Chem. Ber., 88, 1939 (1955); EP 430,434 (1991). Methyl or methoxy substituted aromatics in acetonitrile give the nitrosoaromatics in good yield: J. Org. Chem., 59, 5573 (1994).

Convenient catalyst for iodination of aromatics by iodide ion with air as oxidant: J. Org. Chem., 53, 3548 (1988), or for addition of iodine (or iodine + nucleophile) to alkenes: Acta Chem. Scand. B, 43, 902 (1989).

Undergoes an interesting insertion reaction with diarylcyclopropanes: Chem. Lett., 233 (1988):

With excess reagent, oxidation of the isoxazoline to the isoxazole occurs.


Other References

Merck: 14,6649
UN#: UN3260
Harmonized Tariff Code:   2812.90

GHS Hazard and Precautionary Statements

Hazard Statements : H314-H318

Causes severe skin burns and eye damage. Causes serious eye damage.

Precautionary Statements : P260-P303+P361+P353-P305+P351+P338-P301+P330+P331-P405-P501A

Do not breathe dust/fume/gas/mist/vapours/spray. IF ON SKIN (or hair): Remove/Take off immediately all contaminated clothing. Rinse skin with water/shower. IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. IF SWALLOWED: Rinse mouth. Do NOT induce vomiting. Store locked up. Dispose of contents/container in accordance with local/regional/national/international regulations.

Corrosive

Risk & Safety

Risk Phrases: 31-34
Contact with acids liberates toxic gas. Causes burns.
Safety Phrases: 7/8-26-36/37/39-45
Keep container tightly closed and dry. In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. Wear suitable protective clothing, gloves and eye/face protection. In case of accident or if you feel unwell, seek medical advice immediately (show the label where possible).
Corrosive
TSCA: Yes