Natri tetrafluoroborat

Natri tetrafluoroborat
Tên khácNatri fluoroborat
Natri borofluoride
Nhận dạng
Số CAS13755-29-8
PubChem4343483
Ảnh Jmol-3Dảnh
SMILES
đầy đủ
  • [B-](F)(F)(F)F.[Na+]

InChI
đầy đủ
  • 1S/BF4.Na/c2-1(3,4)5;/q-1;+1
ChemSpider24462
UNIICFC805A5WR
Thuộc tính
Công thức phân tửNaBF4
Khối lượng mol109,7936 g/mol
Khối lượng riêng2,47 g/cm³
Điểm nóng chảy 384 °C (657 K; 723 °F)
Điểm sôi
Độ hòa tan trong nước108 g/100 mL
Độ hòa tankém hòa tan trong các dung môi hữu cơ
Các nguy hiểm
Các hợp chất liên quan
Cation khácNitrosoni tetrafluoroborat(III)
Trừ khi có ghi chú khác, dữ liệu được cung cấp cho các vật liệu trong trạng thái tiêu chuẩn của chúng (ở 25 °C [77 °F], 100 kPa).
☑Y kiểm chứng (cái gì ☑YKhôngN ?)

Natri tetrafluoroborat, hay Natri tetrafluoroborat(III) còn gọi là natri borofluoride, là một hợp chất vô cơcông thức hóa học NaBF4. Nó tạo nên tinh thể hình thoi không màu tan được trong nước, tan tốt trong nước (108 g/100 mL) nhưng kém hơn trong các dung môi hữu cơ.[1]

Điều chế

Natri tetrafluoroborat(III) có thể được điều chế từ phản ứng trung hòa acid tetrafluoroboric(III) với natri oxide, natri carbonat hay natri hydroxide.[2]

Na2O + 2HBF4 → 2NaBF4 + H2O
NaOH + HBF4 → NaBF4 + H2O
Na2CO3 + 2HBF4 → 2NaBF4 + H2O + CO2

Natri tetrafluoroborat(III) có thể dùng để điều chế nitrosoni tetrafluoroborat(III), một loại thuốc nổ, khi phản ứng với dinitơ trioxide.[3]

Tính chất

Khi đun nóng, natri tetrafluoroborat(III) phân hủy thành natri fluoridebor trifluoride.[4]

Ứng dụng

Natri tetrafluoroborat(III) được dùng trong vài chất chảy trong việc hàn.

Nó là một nguồn anion tetrafluoroborat(III). Nó dùng trong hóa hữu cơ cho các phản ứng fluor hóa cũng như làm xúc tác, và điều chế một lượng nhỏ bor trifluoride dùng trong phòng thí nghiệm.

Natri tetrafluoroborat(III) có thể dùng cho quá trình tổng hợp dung dich ion (muối ở trạng thái lỏng), nơi các ion tetrafluoroborat(III) đóng vai trò như anion của các sản phẩm.

Tham khảo

  1. ^ “Gardner's Commercially Important Chemicals”. Google Books. Truy cập 26 tháng 9 năm 2015.
  2. ^ Bản mẫu:Kirjaviite
  3. ^ “The Preparatory Manual of Explosives”. Google Books. Truy cập 26 tháng 9 năm 2015.
  4. ^ “Hazardous Chemicals Desk Reference”. Google Books. Truy cập 26 tháng 9 năm 2015.

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