Sodium fluoride (NaF) - Sodium fluoride

Japanese: フッ化ナトリウム(弗化ナトリウム) - ふっかナトリウム(英語表記)sodium fluoride
Sodium fluoride (NaF) - Sodium fluoride
Chemical formula: NaF. Commonly known as sodium fluoride. Colorless cubic or tetragonal regular hexahedral or octahedral crystal. Rock salt structure. Melting point: 993°C. Boiling point: 1704°C. Specific gravity: 2.79. Refractive index: 1.3258. Solubility in 100g of water is 4g (0°C) and 5g (100°C), significantly lower than potassium salt KF. Slightly soluble in ethyl alcohol. Aqueous solution is alkaline due to hydrolysis and corrodes glass. NaF + H 2 O ⇄ NaOH + HF Dry sodium fluoride does not corrode glass.

Source: Heibonsha World Encyclopedia, 2nd Edition Information

Japanese:
化学式NaF。俗にフッ化ソーダとも呼ばれる。無色の立方または正方晶系の正六面体または八面体結晶。岩塩型構造。融点993℃。沸点1704℃。比重2.79。屈折率1.3258。水100gへの溶解度は4g(0℃),5g(100℃)で,カリウム塩KFに比べて著しく低い。エチルアルコールに微溶。水溶液は加水分解のためアルカリ性を呈し,ガラスを侵す。 NaF+H2O⇄NaOH+HF乾いたフッ化ナトリウムはガラスを侵さない。

出典 株式会社平凡社世界大百科事典 第2版について 情報

<<:  Two-day moxibustion - Futsukakyu

>>:  Price Statistics - bukkatokei

Recommend

Korya-kovskii stanitsa (English spelling) Koryakovskiistanitsa

…It is located on the right bank of the Irtysh Ri...

Hammerfest (English spelling)

A town in northwestern Finnmark, northern Norway. ...

al-Sindbād (English spelling) alSindbad

…One of the protagonists of the One Thousand and ...

Side window lighting - 川村サンゴルゴ

…window [Lighting method and features] They are pr...

Living things -

It refers to something that has attributes that d...

Azuma Koto Song - Azuma Koto Song

...Along with the "Nosaimono" pieces, w...

Arber, W.

...Since strain C does not have either of these f...

Vilyuisk (English spelling)

A city in the Sakha Republic in eastern Russia. It...

Atami Incident

…In 1930, he published “The History of the Develo...

Common mullet

...It is characterized by its oily eyelids and la...

bounded

… If a is an upper bound of a set E , then every ...

Pontiana

A port city on the west coast of Indonesian Borneo...

Emperor Uda

Year of death: Johei 1.7.19 (931.9.3) Year of birt...

Morning and evening

〘Noun〙① Morning and evening. Asayuu. By extension,...

Monthly loan money - Gesshakusen

A type of usury practiced by central government of...