Sodium hydroxide, not unfamiliar chemicals

Lead: sodium hydroxide, chemical formula NaOH, commonly known as caustic soda, caustic soda, caustic soda (Hong Kong also known as "Courtesy"), is a highly corrosive strong alkali (what is called caustic soda and caustic soda it? Because let go On the upper than the fire burning), generally in the form of flakes or particles, soluble in water and form alkaline solution, and deliquescence, easy to absorb the water vapor in the air. Sodium hydroxide also has different applications and is one of the essential chemicals in chemical laboratories, and it is also one of the common chemicals.

The department that uses the most caustic soda is the manufacture of chemicals, followed by the manufacturing of paper, aluminum, tungsten, rayon, rayon and soap. In addition, in the production of dyes, plastics, pharmaceuticals and organic intermediates, the regeneration of old rubber, the production of water, the electrolysis of water and the production of inorganic salts, the preparation of borax, chromium salts, manganese salts, phosphates, etc. Use a lot of caustic soda.

However, special attention is needed during use. A thicker sodium hydroxide solution splashes on the skin and can corrode the skin and cause burns. It has a solubilizing effect on proteins and is strongly irritating and corrosive (due to its solubility in proteins, alkali burns are less likely to heal than acid burns). With a 0.02% solution instilled into rabbit eyes, corneal epithelial damage can be caused. Misuse can cause digestive tract burns, cramps, mucous membrane erosion, vomiting bloody stomach contents, bloody diarrhea, sometimes dumbness, difficulty swallowing, shock, perforation of the digestive tract, gastrointestinal stenosis can occur later.

When heavy caustic soda is exposed, protective equipment should be worn, and overalls or work caps should be made of cotton or appropriate synthetic materials. When operating personnel must wear work clothes, masks, protective glasses, rubber gloves, rubber aprons, rubber boots and other labor insurance supplies. Neutral and hydrophobic ointments should be applied to the skin. When contacted with flake or granular caustic soda, the workplace shall be provided with a ventilation device. The maximum allowable concentration in indoor air is China MAC 0.5 mg/m3 (calculated as NaOH), and US ACGIH TLVC 2 mg/m3. You may need to wear a hood-type, powered air filter dust respirator when you may be exposed to dust. Wear an air respirator if necessary. Operators must be specially trained to strictly observe the operating procedures. It is recommended that the operator wear a hood-type electric air filter dust respirator, wear rubber acid and alkali clothes, wear rubber acid and alkali gloves. Keep away from flammable and combustible materials. Avoid dust. Avoid contact with acids.

Source: Dongguan Hengxin Biological Technology Co., Ltd.