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Sodium hydroxide
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Sodium hydroxide

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content 98.5% package 25kg / piece


product description


Protopine, chemical name sodium hydroxide, white translucent flake solid, is a basic chemical raw material. It is widely used in the light textile industry such as papermaking, synthetic detergents and soaps, viscose fibers, rayon and cotton fabrics, pesticides and dyes. , Rubber and chemical industry, petroleum drilling, petroleum industry refining petroleum oil and tar, as well as defense industry, machinery industry, wood processing, metallurgy industry, pharmaceutical industry and urban construction. It is also used in the manufacture of chemicals, paper, soap and detergent, rayon and cellophane, processing alumina made of bauxite, also used in mercerization of textiles, water treatment, etc.


Product properties

Chinese name


English name

Sodium hydroxideSodium hydroxide;Caustic soda

Chemical formula


Molecular weight






Control information

Strong corrosion

Dangerous nature

Hazardous Chemicals

GHS image



Physical and chemical properties Pure product is colorless transparent crystal with relative density of 2.130. Melting point 318.4 ° C. The boiling point is 1390 ° C. Commercially available caustic soda is available in solid and liquid forms: pure solid caustic soda is white, and is available in blocks, flakes, rods, granules, and brittle; pure liquid caustic soda is a colorless and transparent liquid. Solid caustic soda is highly hygroscopic. Easily soluble in water, exothermic when dissolved, aqueous solution is alkaline and has a greasy feel; soluble in ethanol and glycerol; insoluble in acetone and ether. Extremely corrosive, corrosive to fibers, skin, glass, ceramics, etc. It reacts with metal aluminum and zinc, non-metal boron and silicon to emit hydrogen; disproportionation with halogens such as chlorine, bromine, and iodine; and neutralizes with acids to form salts and water.


Product Usage

Sodium hydroxide is used to manufacture many everyday products, such as paper, aluminum, commercial drain and oven cleaners, and soap and detergents.

Sodium Hydroxide in Cleaning & Disinfectant Products

Sodium hydroxide is used to manufacture soaps and a variety of detergents used in homes and commercial applications. Chlorine bleach is produced by combining chlorine and sodium hydroxide. Drain cleaners that contain sodium hydroxide convert fats and grease that can clog pipes into soap, which dissolves in water.

Sodium Hydroxide in Pharmaceuticals & Medicine

Sodium hydroxide is used to help manufacture a variety of medicines and pharmaceutical products, from common pain relievers like aspirin, to anticoagulants that can help to prevent blood clots, to cholesterol-reducing medications.

Sodium Hydroxide in Energy

In the energy sector, sodium hydroxide is used in fuel cell production. Fuel cells work like batteries to cleanly and efficiently produce electricity for a range of applications, including transportation; materials handling; and stationary, portable and emergency backup power applications. Epoxy resins, manufactured with sodium hydroxide, are used in wind turbines.

Sodium Hydroxide in Water Treatment

Municipal water treatment facilities use sodium hydroxide to control water acidity and to help remove heavy metals from water. Sodium hydroxide is also used to produce sodium hypochlorite, a water disinfectant.

Sodium Hydroxide in Food Production

Sodium hydroxide is used in several food processing applications, such as curing foods like olives or helping to brown Bavarian-style pretzels, giving them their characteristic crunch. Sodium hydroxide is used to remove skins from tomatoes, potatoes and other fruits and vegetables for canning and also as an ingredient in food preservatives that help prevent mold and bacteria from growing in food.

Sodium Hydroxide in Wood & Paper Products

In many paper making processes, wood is treated with a solution containing sodium sulfide and sodium hydroxide.   This helps dissolve most of the unwanted material in the wood, leaving relatively pure cellulose, which forms the basis of paper. In the paper recycling process, sodium hydroxide is used to separate the ink from the paper fibers allowing the paper fibers to be reused again.

Sodium hydroxide is also used to refine raw materials for wood products such as cabinets and furniture and in wood bleaching and cleaning.

Sodium Hydroxide in Aluminum Ore Processing

Sodium hydroxide is used to extract alumina from naturally occurring minerals. Alumina is used to make aluminum and a variety of products including foil, cans, kitchen utensils, beer kegs and airplane parts. In building and construction, aluminum is used in materials that enable building facades and window frames.

Sodium Hydroxide in Other Industrial Manufacturing Uses

Sodium hydroxide is used in many other industrial and manufacturing processes. It is used to manufacture rayon, spandex, explosives, epoxy resins, paints, glass and ceramics. It is also used in the textile industry to make dyes, process cotton fabric and in laundering and bleaching, as well as in metal cleaning and processing, oxide coating, electroplating and electrolytic extracting.


Packaging and storage

片碱一般采用25kg三层塑编袋,内层和外层为塑料编织袋,中间一层为塑料内膜袋。片碱被《常用危险化学品的分类及标志 (GB 13690-92)》划为第8.2 类碱性腐蚀品,属八级危险品,危规编码:1823。应贮存在通风、干燥的库房或货棚内。包装容器要完整、密封。不得与易燃物和酸类共贮混运。运输过程中要注意防潮、防雨。失火时,可用水、砂土和各种灭火器扑救,但消防人员应注意水中溶入烧碱后的腐蚀性。

Protopine generally uses 25kg three-layer plastic woven bags, the inner and outer layers are plastic woven bags, and the middle layer is a plastic inner film bag. Protopine is classified as Class 8.2 Alkali Corrosive by the "Classification and Marking of Commonly Used Hazardous Chemicals (GB 13690-92)", which is a Class 8 dangerous goods. Hazard code: 1823. It should be stored in a ventilated, dry warehouse or cargo shed. The packaging container should be complete and sealed. Do not co-storage with flammables and acids. Pay attention to moisture and rain during transportation. In the event of a fire, water, sand and various fire extinguishers can be used to extinguish the fire, but firefighters should pay attention to the corrosiveness of water dissolved in caustic soda.