Chemical formula :NaOH
CAS logon number :1310-73-2
Packing: Galvanized iron drum packaging, 150kg per barrel.According to the flammable product regulation, storage and transportation at low temperature to prevent exposure.
Sodium hydroxide, the chemical formula for NaOH, commonly known as caustic soda, caustic soda, caustic soda, to have a caustic alkali, generally to sheet or block form, soluble in water, soluble in water heating) and formation of alkaline solution, otherwise deliquescence, easy to absorb water vapor in the air (deliquescence) and carbon dioxide (bad), can be in a hydrochloric acid test of whether metamorphism.
NaOH is one of the essential chemicals in the chemistry lab and is one of the common chemicals.Pure products are colorless transparent crystals.Density of 2.130 g/cm after.The melting temperature of 318.4 ℃.The boiling point of 1390 ℃.Industrial products contain a small amount of sodium chloride and sodium carbonate, white opaque crystals.There are lumps, flaps, granules, and rods.Type the amount of 39.997.
Sodium hydroxide can be used as an alkaline cleaner in water treatment and soluble in ethanol and glycerol.Insoluble in propanol, ether.Disproportionation of halogen with chlorine, bromine and iodine.Salt and water are produced by neutralizing acids.
Basic chemical raw materials, used as high purity reagent, widely used in chemical, metallurgy, paper, petroleum, textile and daily chemical industries.
For the production of paper and cellulose pulp;Used for soap, synthetic detergents, synthetic fatty acid production and refining of animal and vegetable oils.Textile printing and dyeing industry is used as cotton desizing agent, scouring agent and mercerizing agent.The chemical industry is used to produce borax, sodium cyanide, formic acid, oxalic acid, phenol and so on.The oil industry is used for refining petroleum products and for drilling mud in oil fields.It is also used in the production of surface treatment of alumina, metal zinc and copper, as well as glass, enamel, leather, medicine, dyes and pesticides.Food grade products are used as acid neutralizer in the food industry, and can be used for peel and decolorizing agent and deodorizer for citrus and peach.
It is used as a reagent, saponifier, a small amount of carbon dioxide and water absorbent, and also used in sodium salt manufacturing.
For textile, printing and dyeing, enamel, paper, synthetic detergent, pesticide, metallurgy, food, rubber and other industries.
Basic chemical raw materials, widely used in chemical, metallurgy, paper, petroleum, textile and daily chemical sectors.
Used as a calibration of acid in analysis.
It is mainly used for viscose rayon, synthetic fiber, dye intermediates, rubber regeneration, fabric bleaching, paper making, soap making, leather making, etc.
As an acid neutralizer, it can be used in fruit processing, or as a detergent for containers such as empty bottles and empty cans.
Basic analytical reagents that should be widely used.The standard lye is used for the preparation analysis.A small amount of carbon dioxide and water absorbent.
Neutralization of acid.Sodium made.
Extremely corrosive, its solution or dust splashing onto the skin, especially splashing into the mucous membrane, can produce soft scab, and can penetrate deep tissue.The burn left a scar.In the eyes, not only damage the cornea, but also can cause deep tissue damage.Wash 10mim with water immediately if spilled on the skin.
In the case of splatting eyes, rinse immediately with water or saline for 15 minutes and then point to 2% novocaine.The serious person delivers the hospital treatment.
The maximum allowable concentration of alkali dust in air is 0.5 mg/m3.
Operators must wear work clothes, masks, protective glasses, erasers, rubber apron, rubber boots and other labor protection products.Apply neutral and hydrophobic ointment to the skin.The workshop should be well ventilated.
Invasive ways: inhalation and feeding.
Health hazard: this product has strong stimulation and causticity.Dust or smoke can irritate eyes and respiratory tract, corrode nasal septum, skin and eye contact with NaOH directly can cause burns, which can cause burns in the digestive tract, mucosa erosion, hemorrhage and shock.
Decomposition products: potentially harmful toxic fumes.
Respiratory protection: wear a respirator if necessary.
Eye protection: wear chemical safety goggles.Protective clothing: wear overalls (made of anticorrosive materials).Carefully use, splash down into clothing, mouth and nose.
Hand protection: wear rubber gloves.
Others: after work, shower and change clothes.Pay attention to personal hygiene.
First aid measures:
Skin contact: rinse with water for at least 15 minutes (dilute solution)/dry with cloth (concentrated solution), then wash and seek medical treatment with 5 ~ 10% magnesium sulfate, or 3% boric acid solution.
Eye contact: lift eyelid immediately and wash with flowing water or saline for at least 15 minutes.Or use 3% boric acid solution (or dilute acetic acid) to rinse.Go to a doctor.
Inhalation: quickly disengage from the scene to fresh air.Artificial respiration if necessary.Go to a doctor.
Food intake: in a small amount of accidental food, vinegar, 3 ~ 5% acetic acid or 5% dilute hydrochloric acid, a large amount of orange juice or lemon juice, etc.To drink egg white, milk or vegetable oil and quickly seek medical treatment, taboo to vomit and wash stomach.
The solid sodium hydroxide is sealed in a steel drum of 0.5mm thick, with a net weight of no more than 100kg.Plastic bag or two-layer kraft paper bag outside full opening or middle open steel drum;Screw mouth glass bottle, iron cover pressure mouth glass bottle, plastic bottle or metal drum (can) ordinary wooden box;Screw mouth glass bottles, plastic bottles or tin-coated steel drum (cans) filled with plywood boxes, fiberboard boxes or plywood boxes;Tin - coated steel drum (can), metal drum (can), plastic bottle or metal hose outside corrugated box.The packing container should be complete and sealed with obvious "corrosive articles".
Sodium hydroxide has a slight corrosive effect on glassware, which produces sodium silicate, which makes the piston in the glass instrument adhere to the instrument.Therefore, the sodium hydroxide solution can not be used with glass stopper, otherwise it may cause the bottle cap to be unable to open.
Glass containers can also be damaged if they are heated in glass containers for long periods of time.(the glass contains SiO 2:2NaOH + SiO 2 = Na 2 SiO 3 + H 2 O)
When railway transportation, the steel drum package can be transported in open car.The packing should be complete when shipment, and the loading should be safe.In the process of transportation, make sure that the container does not leak, do not collapse, do not fall, do not damage, prevent moisture and rain.If the packing container is found to be rust, rupture, hole, water and other phenomena, the packaging should be replaced immediately or early delivery, the container damage can be repaired with tin soldering.It is strictly prohibited to mix with inflammables, combustibles, acids and food chemicals.Transport vehicles should be equipped with emergency handling equipment.
Dangerous goods mark：C,Xi
Hazard type code：R36/38-35-34
Transport number.：UN 1824 8/PG 2