The chemical formula is NaOH, commonly known as sodium hydroxide, caustic soda and caustic soda. It is a strong caustic soda with strong corrosivity, generally in the form of flakes or particles. It is easy to dissolve in water (release heat when dissolved in water) and form an alkaline solution. In addition, it has deliquescence, and is easy to absorb water vapor (deliquescence) and carbon dioxide (deterioration) in the air
NaOH is one of the necessary chemicals in chemical laboratories, and also one of the common chemicals. Pure products are colorless and transparent crystals. The density is 2.130g/cm3. The melting point is 318.4 ℃. The boiling point is 1390 ℃. Industrial products contain a small amount of sodium chloride and sodium carbonate, which are white and opaque crystals. There are blocky, flaky, granular and rod-shaped. Sodium hydroxide of formula 40.01 can be used as an alkaline cleaning agent in water treatment. It is soluble in ethanol and glycerin and insoluble in propanol and ether. It can also corrode sodium carbonate at high temperature. Disproportionation reaction occurs with chlorine, bromine, iodine and other halogens, and neutralizes with acids to generate salt and water
Collapse physical properties
Sodium hydroxide is a white translucent crystalline solid. Its aqueous solution is astringent and greasy
Folding deliquescence
It is easy to deliquescence in the air
Folding water absorption
Solid caustic soda is highly hygroscopic. When exposed to the air, it absorbs water molecules in the air, and finally completely dissolves into solution, but liquid sodium hydroxide is not hygroscopic
Folding solubility
It is very soluble in water and gives off a lot of heat when dissolved. Easily soluble in ethanol and glycerin
The solubility of sodium hydroxide in water is as follows:
temperature(°C)
|
solubility(g/100mL)
|
0
|
42
|
10
|
51
|
20
|
109
|
30
|
119
|
40
|
129
|
50
|
145
|
60
|
174
|
70
|
299
|
80
|
314
|
90
|
329
|
100
|
347
|
CN
Phone：+86-18260589889
Contacts：Mr. Shen
Address：Nantong of jiangsu province haimen area guanghua building 12 C floor layer