【Product name】Liquid alkali is the common name for liquid sodium hydroxide (NaOH), also known as caustic soda or caustic soda.

【Product overview】 Liquid alkali belongs to hazardous chemicals (UN1823)

【Product characteristics】Pure products are colorless and transparent liquids, while industrial products often appear slightly turbid due to impurities such as sodium chloride, sodium carbonate, and small amounts of iron oxide. Has strong alkalinity (pH>7) and corrosiveness, with a relative density of 1.328-1.349, a melting point of 318.4 ℃, and a boiling point of 1390 ℃.

【Application area 】

Chemical and Pharmaceutical: Used for manufacturing formic acid, oxalic acid, phenol, sodium cyanide, synthetic detergents, etc., and also as a raw material for carboxymethyl cellulose sodium (CMC).

Textile printing and dyeing: used as a cotton fabric desizing agent, scouring agent, silk agent, and dye solvent.

Water treatment: used to neutralize acidic wastewater and prepare green water purification agents such as sodium ferrate.

Metal smelting: manufacturing aluminum hydroxide, aluminum oxide, and metal surface treatment agents.

Other fields: papermaking, leather making, cosmetics, pesticide production, etc.

【Usage and precautions】

Operators should wear acid and alkali resistant protective clothing, protective gloves, goggles, and face shields to avoid direct contact with liquid alkali on the skin or eyes.

When diluting, slowly add the liquid alkali to the water and stir continuously to prevent local overheating or splashing.

In electroplating, sewage treatment and other scenarios, add liquid alkali to acidic solution in proportion, and adjust the pH value to neutral or weakly alkaline (for example, aquaculture sewage needs pH 7.5-8.5).

After contact with liquid alkali, immediately rinse the skin or eyes with clean water for at least 15 minutes. In severe cases, seek medical attention.

Avoid inhaling liquid alkali dust or aerosols, and the working environment should be equipped with ventilation equipment.

When liquid alkali leaks, cover it with sand or inert adsorbent material, and do not rinse it directly with water.

【Packaging And Storage】

Liquid alkali should be stored in corrosion-resistant sealed containers such as polyethylene drums, polyethylene tanks, or stainless steel containers to avoid reacting with metals such as aluminum and zinc.

Liquid alkali should be stored in a cool, ventilated, corrosion-resistant container (such as polyethylene material), away from acids, flammable materials, and water sources.

The storage area needs to be equipped with anti leakage embankments and marked with the "corrosive dangerous goods" label.

The export of liquid alkali must comply with international standards (such as IMO and UN regulations), and priority should be given to using dedicated liquid alkali transport boxes or composite material packaging with leak proof design.

The packaging must be clearly labeled with the "Corrosive Hazardous Materials" label (UN1823 or UN1824), concentration (such as 30-32%, 40-42%), and warning language.