Caustic soda
IUPAC: Sodium hydrate;Sodium hydroxide
Molecular Formula: NaOH,
Molecular Weight: 40,
CAS No.: 1310-73-3,
Einecs: 215-185-5
UN No.: 1823
Dangerous Classification: 8.
RTECS: WB4900000
H.S. CODE NO.2815.11.00
Appearance: White flake , solid, pearls
Specification:
Caustic soda flakes: 96% 98% 99%
Caustic soda solid: 96% 98% 99%
Caustic soda peals: 99%
PURITY,Na2CO3,Nacl,Fe2O3
96%,1.4% max,2.8% max,0.01% max
98%,1.1% max,0.6% max,0.01% max
99%,0.9% max,0.15% max,0.01% max
Packing:
Flakes or pearls: 25kg plastic bags(3layer PP & PE)
Solid: Iron drum, net weight: 200kg (High of Drum: 90CM)
Application:
1. Production of alumina, paper making, and pulp cellulose
2. Processing Zinc and other metal surfaces
3. Production of soap, synthetic detergents, and synthetic adipic acid
4. As cotton desizing agent and scouring agent
5. Production of glaze
6. As acid neutralizer, decolorizing agent and deodorizer
● NaOH
Introduction:
Sodium hydroxide (NaOH, the common name Huo Jian, caustic soda, caustic soda. In Hong Kong called Ge Shi's) at room temperature is a white crystal, with a strong corrosive. Soluble in water, its aqueous solution was strongly alkaline, can phenolphthalein red. Sodium hydroxide is an extremely popular base, is one of the chemical laboratory of the essential drugs. It can be used as washing liquid solution.
Nature:
Under the STP density 2.1103kg/m3 (?)
Solubility of 111 g/100 g water
Melting point 596 K (318.4 ℃)
Boiling point 1663 K (1390 ℃)
Chemical Performance:
1.Colorless transparent alkali liquid sodium is a strong base, one dissolves easily in water, with many organic and inorganic compounds from a chemical reaction, a strong corrosive and can burn human skin and so on.
2.Sodium hydroxide in the water out completely ionized sodium ions and hydroxide ions can be carried out with any proton acid in and response. Hydrochloric acid as an example:
NaOH + HCl → NaCl + H2O
3. Sodium hydroxide is a good catalyst for many organic reactions. One of the most typical is the ester hydrolysis reaction:
RCOOR '+ NaOH → RCOONa + R'OH
Reaction of both the complete and rapid. This is the sodium hydroxide can cause burns to the skin.
Sodium hydroxide is one of the important raw material for manufacture of soap. Sodium hydroxide solution refueling, the ratio would be an appropriate reaction mixture to become solid soap. This response is also the use of the principle of hydrolysis, and this class in the NaOH-catalyzed ester hydrolysis reaction is called saponification.
Industrial manufacturing method(our Caustic Soda produced by Diaphragm Method and Ionic membrane Method):
Sodium hydroxide is the system of chlorine in industrial process by-products. Saturated salt electrolysis of water until all the chlorine into chlorine gas escaped, this time to remain in solution where a solute only sodium hydroxide. Reaction equation as follows:
2NaCl + H2O → 2NaOH + Cl2 + H2
Uses:
Sodium hydroxide is widely used in various production processes. In chemical production, to provide basic environmental or sodium hydroxide as catalyst. NaOH dilute solution of household washing liquid when you can do.
In food production, sodium hydroxide is sometimes used to processed food products. Sodium hydroxide or even a need for specialty spices. Notice that the use of sodium hydroxide is strictly controlled; while some unscrupulous traders would be excessive use of sodium hydroxide to make food more "pretty", but such food can be pathogenic.
Hazardous chemicals:
Sodium hydroxide are dangerous chemicals, in the People's Republic of "dangerous goods Name Table" (GB 12268-90), by an eighth category of dangerous goods in alkaline corrosive substances, corrosive substances, number 82001. Their production, management, storage, transport, use and disposal of waste materials shall be in accordance with "dangerous chemical safety regulations."
Risk :% |
