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

Honinbo Jowa

Year of death: October 10, 1847 (November 17, 1847...

Magistrate of Sado

This was one of the Edo Shogunate's magistrat...

etesian

… Willy-Willy A whirlwind occurring inland in Aus...

Takahashi Finance

Takahashi Korekiyo served as finance minister in ...

myrrh

…Buderia from India has long been known as a type...

British Social Democratic Party

…Originally meaning the center of the road or a m...

Okanoue Keino - Up the mountain, up the hill

Year of death: 4th December 3rd, 1688 (1st January...

Wiretapping - Wiretapping

Secretly eavesdropping on other people's conv...

Okabe Tameshiki - Okabe Tameshiki

…However, they did not create a mobilization orga...

Foreign Languages ​​- Gaikokugo

English: (noun) a foreign language (as opposed to ...

Unified Field Theory - Toitsubariron

An attempt to derive the necessity for the existe...

Mucus - mucus

A general term for highly viscous liquid secreted...

De facto government - English spelling: de facto government

A de facto government is a government that is esta...

Thread-thief

…It is often called Itoyori. It is also called It...

Danshi paper

Although not commonly used today, this washi pape...