Caustic Soda Liquid
Caustic Soda Liquid Description
Caustic Soda Liquid, also known as lye and Sodium hydroxide, is an inorganic compound with formula NaOH. Caustic soda uses electrolysis method which result in pure liquid caustic-soda and free of metal impurities, and are marketed in two types: 30% -33% and 48% -50%; which are according to ISIRI 364 Standard and conventional caustic-Soda of industrial consumer units. It is a white ionic compound consisting of sodium cations Na+ and hydroxide anions OH–.
Sodium hydroxide is a highly caustic base and alkali, that decomposes proteins at ordinary ambient temperatures and may cause severe chemical burns. It is highly soluble in water and readily absorbs moisture and carbon dioxide from the air. It forms a series of hydrates NaOH·nH2O. The monohydrate sodium hydroxide (NaOH·H2O) crystallizes from water solutions between 12.3 and 61.8 °C.
The commercially available “sodium hydroxide” is often this monohydrate, and published data may refer to it instead of the anhydrous compound.
Sodium hydroxide is used in many industries in the manufacture of pulp and paper, textiles, drinking water, soaps and detergents and as a drain cleaner.
Sodium hydroxide can form several hydrates(NaOH·nH2O), which result in a complex solubility diagram that was described in detail by S. U. Pickering in 1893. The known hydrates and the approximate ranges of temperature and concentration (mass percent of NaOH) of their saturated water solutions are:
Hepta hydrate, NaOH·7H2O: from -28 °C (18.8%) to -24 °C (22.2%).
Penta hydrate, NaOH·5H2O: from -24 °C (22.2%) to -17.7 (24.8%).
Tetra hydrate, NaOH·4H2O, α form: from ?17.7 (24.8%) to +5.4 °C (32.5%).
Tetra hydrate, NaOH·4H2O, ß form: metastable.
NaOH·3.5H2O: from +5.4 °C (32.5%) to +15.38 °C (38.8%) and then to +5.0 °C (45.7%).
Tri hydrate, NaOH·3H2O: metastable
Di hydrate, NaOH·2H2O: from +5.0 °C (45.7%) to +12.3 °C (51%).
Monohydrate, NaOH·H2O: from +12.3 °C (51%) to 65.10 °C (69%) then to 62.63 °C (73.1%).
Early reports refer to hydrates with n = 0.5 or n = 2/3, but later careful investigations failed to confirm their existence.
The only hydrates with stable melting points are NaOH·H2O (65.10 °C) and NaOH·3.5H2O (15.38 °C). The other hydrates, except the metastable ones NaOH·3H2O and NaOH·4H2O (ß) can be crystallized from solutions of the proper composition, as listed above. However, solutions of NaOH can be easily super cooled by many degrees, which allows the formation of hydrates (including the metastable ones) from solutions with different concentrations.
For example, when a solution of NaOH and water with 1:2 mole ratios (52.6% NaOH by mass) is cooled, the monohydrate normally starts to crystallize (at about 22 °C) before the dihydrate. However, the solution can easily be supercooled down to -15 °C, at which point it may quickly crystallize as the dihydrate. When heated, the solid dihydrate might melt directly into a solution at 13.35 °C; however, once the temperature exceeds 12.58 °C, it often decomposes into solid monohydrate and a liquid solution. Even the n = 3.5 hydrate is difficult to crystallize because the solution super cools so much that other hydrates become more stable.
A hot water solution containing 73.1% (mass) of NaOH is an eutectic that solidifies at about 62.63 °C as an intimate mix of anhydrous and monohydrate crystals.
A second stable eutectic composition is 45.4% (mass) of NaOH, that solidifies at about 4.9 °C into a mixture of crystals of the dihydrate and of the 3.5-hydrate.
The third stable eutectic has 18.4% (mass) of NaOH. It solidifies at about -28.7 °C as a mixture of water ice and the heptahydrate NaOH·7H2O.
When solutions with less than 18.4% NaOH are cooled, water ice crystallizes first, leaving the NaOH in solution.
The α form of the tetrahydrate has density 1.33 g/cm3. It melts congruously at 7.55 °C into a liquid with 35.7% NaOH and density 1.392 g/cm3, and therefore floats on it like ice on water. However, at about 4.9 °C it may instead melt incongruously into a mixture of solid NaOH·3.5H2O and a liquid solution.
The ß form of the tetrahydrate is metastable, and often transforms spontaneously to the ? form when cooled below -20 °C. Once initiated, the exothermic transformation is complete in a few minutes, with a 6.5% increase in volume of the solid. The ß form can be crystallized from supercooled solutions at -26 °C, and melts partially at -1.83 °C.
The “sodium hydroxide” of commerce is often the monohydrate (density 1.829 g/cm3). Physical data in technical literature may refer to this form, rather than the anhydrous compound.
The monohydrate crystallizes in the space group Pbca, with cell dimensions a = 1.1825, b = 0.6213, c = 0.6069 nm. The atoms are arranged in a hydrargillite-like layer structure /O Na O O Na O/… Each sodium atom is surrounded by six oxygen atoms, three each from hydroxyl anions HO– and three from water molecules. The hydrogen atoms of the hydroxyls form strong bonds with oxygen atoms within each O layer. Adjacent O layers are held together by hydrogen bonds between water molecules.
Lye Liquid Uses
Caustic-soda, or sodium hydroxide, mostly used by industry and chemical manufacturing companies. Some fields caustic-soda use for:
Refineries Alumina
plastic wrap
Soaps and cleaners
Detergent
Textile processing
Oil refining
Water treatment
Metal processing
Caustic-Soda Liquid Formula
Caustic-soda / Sodium hydroxide ( NaOH), purity / mass: Min. 50.50
Chlorides / NaCl, purity / mass: Max. 0.10
Caustic-soda / Sodium carbonate / Na2CO3, purity / mass, Max. 0.40
Caustic Soda Liquid Specifications
| LYE ANALYSIS | Value |
|---|---|
| NaOH | 98% Min |
| NaCO2 | 1% Max |
| NaCl | 600 ppm Max |
| Ni | 3 ppm Max |
| Fe | 5 ppm Max |
| SiO2 | 100ppm Max |
| Na2SO4 | 0.01% Max |
| Hg | Not Detected |
| PHYSICAL SPECIFICATION | Value |
|---|---|
| Visual Shape | White Flakes |
| Boiling Temperature | 1390° C |
| Freezing Point | 318.4° C |
| Specific Gravity | 2.13 at 25°C |
| Solubility in water | 1g / 0.9 ml water |
Lye Liquid Packing
Bulk, IBC Tank, Drum.
Caustic Soda Flake
Caustic Soda Flake Description
Caustic Soda Flake (sodium hydroxide flake) are prepared by liquid caustic soda which is produced by membrane cell technology. Therefore, this product has the best quality and is without heavy metal impurities. Caustic soda flake are highly hygroscopic and soluble in water and are used in a lot of different industries .The purity of this product is min %99.
Sodium hydroxide (NaOH), also known as lye and caustic soda, is an inorganic compound. It is a white solid and highly caustic metallic base and alkali salt which is available in pellets, flakes, granules, and as prepared solutions at a number of different concentrations. Sodium hydroxide forms an approximately 50% (by weight) saturated solution with water. Sodium hydroxide is soluble in water, ethanol and methanol. This alkali is deliquescent and readily absorbs moisture and carbon dioxide in air.
Caustic soda flake is produced from soda lye in from liquid form (membrane electrolysis) at the flaking plant built on the license of the Swiss company Bertram’s. Caustic soda is an inorganic chemical compound belonging to the group of the strongest alkalis; Caustic soda is highly hygroscopic and soluble in water and alcohols. Caustic soda flake is one of the main raw materials in the chemical industry. Sodium hydroxide is used in most of industries, for example: cosmetics, petrochemical, metallurgical, textile, food or in water treatment. High quality of our product as well as efficient and flexible logistic service allows us to become a preferred supplier throughout Europe and also at overseas markets such as Asia, Africa and South America.
Lye flake (technical sodium hydroxide flakes) – flake mass of white color, very hygroscopic, very soluble in water and alcohol. The formula is NaOH. Technical sodium hydroxide flakes are obtained by evaporating of liquid caustic soda А grade.
Caustic Soda Flake Applications
Caustic Soda Flake is used in organic synthesis processes, petroleum products refining, textile industry in production of viscose silk and in bleaching fabrics, in paper and aniline industry, soap making, production of aluminum and sodium metal, soluble glass, alkaline accumulators, Trilon B.
Caustic soda flakes are transported by railway and motor transport. 25 kg, 50 kg polypropylene bags, special soft containers with a maximum mass of 1,000 kg, 60 kg polyethylene barrels (without the insert) are used for packaging the product. Transportation in 20 and 40-feet sea vans is possible for countries outside the CIS.
Caustic Soda, Lye is one of the most widely used chemicals in the industry. Caustic soda is a commitment, we guarantee a high service level towards our customers.
Worldwide, the major users of caustic soda are the aluminum industry, pulp & paper and the chemical industry. The main applications are water treatment and water purification, as cleaning agent, or a wide range of uses in chemical industry like starch production or for the desulphurization in the petrochemical industry.
solution of Sodium hydroxide (NaOH) in water. Caustic soda is a strong base with a wide range of applications in different industries. We produce caustic soda together with chlorine and hydrogen from the electrolysis of salt brine. With our production in five plants in Europe and our quality
LYE Flake Packing
We have two kind of packing for caustic soda flake, First Lye flake packing is 25kg PP/PE bags in Jumbo Bag (per jumbo bag is weight is .250MT). The next packing form is: 25kg PP/PE shrinking on pallet.
LYE Uses
Caustic soda flake , or sodium hydroxide, mostly used by industry and chemical manufacturing companies. Some
fields caustic soda use for :
– Refineries Alumina
– plastic wrap
– Soaps and cleaners
– Detergent
– Textile processing
– Oil refining
– Water treatment
– Metal processing
we are exporting flake Lye to many destinations all over the world, such as Middle east, African and Europe countries, by the best quality and the most competitive price.
Caustic Soda Flake Formula
Flake Lye is knowing by some name and formula according to application in different industries, such as:
Sodium hydroxide ( NaOH), purity / mass: Min. 99.50
Chlorides / NaCl, purity / mass: Max. 0.10
Sodium carbonate / Na2CO3, purity / mass, Max. 0.40
