Disodium Phosphate CAS 7558-79-4
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Factory Supply Disodium Phosphate CAS 7558-79-4 with Best Price
- Appearance: White powder
- Purity: 99. 0%min
- Stock: In stock
- Sample: Available
- Zhishang Chemical: Disodium Phosphate Supplier & Manufacturer
Disodium Phosphate: The Complete Guide
- Item 1: Basic Info of Disodium Phosphate
- Item 2: What is Disodium Phosphate?
- Item 3: Disodium Phosphate Uses
- Item 4: The Manager has Something to Say
- Item 5: Application of Disodium Phosphate
- Item 6: Preparation of Disodium Phosphate
- Item 7: Quality Control of Disodium Phosphate
- Item 8: Hot Sale Products
- Item 9: Get Disodium Phosphate Quotation
Disodium Phosphate for Sale
Basic Info of Disodium Phosphate
Basic Info
Chemical Properties
Other Info
Basic Info
Chemical Name: | Disodium Phosphate |
Other Name: | Sodium Phosphate, Dibasic; Disodium hydrogen phosphate; Monobasic sodium phosphate; Sodium phosphate dibasic anhydrous; Disodium hydrogen phosphate anhydrous |
CAS: | 7558-79-4 |
EINECS: | 231-448-7 |
Type: | Food additives; Pharmaceutical raw materials; organic raw materials; Inorganic salts; Daily chemical products |
Molecular Formula: | HNa2O4P |
Molecular Weight: | 141.96 |
Chemical Properties
Melting point | 243-245 °C |
density | 1.064 g/mL at 20 °C |
vapor density | 4.9 (vs air) |
storage temp. | Store at +5°C to +30°C. |
solubility | H2O: 0.5 M at 20 °C, clear, colorless |
form | powder |
color | White |
PH | 8.9-9.2 (25℃, 50g/L in water) |
pka | (1) 2.15, (2) 6.82, (3) 12.38 (at 25℃) |
Water Solubility | >=10 g/100 mL at 20 ºC |
λmax | λ: 260 nm Amax: 0.019 |
Sensitive | Hygroscopic |
Stability: | Stable. Incompatible with strong acids. Hygroscopic. |
Other Info
Brand Name: | Zhishang Chemical |
Provide: | Disodium Phosphate MSDS; Disodium Phosphate COA |
What is Disodium Phosphate?
Disodium hydrogen phosphate is an essential chemical resources, which is widely made use of in industrial sectors such as biological fermentation, food, medication, feed, chemical market and agriculture. The production methods of disodium hydrogen phosphate generally consist of neutralization technique, extraction technique, ion exchange method, metathesis technique, straight approach, condensation approach and electrolysis method.
Phosphate is currently one of the most extensively made use of food quality improver in the world. To sum up, the features of phosphate in food handling mainly include 2 elements: one is high quality improver. The special structure of phosphate makes it complicated with metal ions. Raise the water holding ability of the product, change the pH value, buffer, as well as engage with healthy protein, which can play the duty of antibacterial conservation, buffering and also anti-caking, emulsifying and also distributing; the second is a nutritional fortifier. Calcium as well as iron fortifier for children’s food and also nutritionally prepared food. It is risk-free, safe, can boost food top quality and has the impact of supplementing iron and also zinc to the human body.
At the same time, phosphorus has a vital physiological function in the body. It joins lots of metabolic processes that are extremely vital to life tasks in the form of phosphate (PO43-): Phosphate in the blood is just one of the crucial parts of the blood buffer system. It has a buffering effect in maintaining the acid-base equilibrium of body liquids; it makes up phospholipids, and then integrates with proteins, which is the raw material for the synthesis of cell walls in the body; takes part in several metabolic reactions, specifically oxidative phosphorylation; participates in the composition of DNA, RNA and numerous coenzymes. Consequently, it is extensively utilized in numerous areas of refined food and also plays a crucial duty in the enhancement of food high quality.
Disodium Phosphate Uses
- Disodium phosphate is utilized in combination with trisodium phosphate in food and water conditioning treatment. In food, it is made use of to readjust pH worth. Its presence can prevent condensation in the process of compressed milk prep work.
- Disodium phosphate is made use of for treats as well as desserts, such as wheat lotion to quicken cooking time and also jelly prepared to consume pudding to thicken. In water therapy, it can delay the development of calcium range. It also exists in some detergents as well as detergents.
- Disodium hydrogen phosphate can be made use of as water softener, material weighting agent, fire retardant, and also made use of in polish, welding flux, medication, pigment, food industry as well as the prep work of other phosphates.
- Emulsifier top quality improver, nutritional fortifier, fermentation aid, chelating representative, stabilizer. Made use of as central heating boiler water conditioner, fire resistant for material, timber as well as paper, polish and solder.
- Disodium phosphate made use of in the production of cleaning agents, cleaning up representatives for printing plates and mordants for dyeing. In the printing and also dyeing industry, it is utilized as a stabilizer for hydrogen peroxide bleaching, as a filler for rayon (to enhance the strength and flexibility of silk).
- Disodium phosphate is a basic material for the manufacture of salt pyrophosphate as well as various other phosphates, as well as a society representative for monosodium glutamate, erythromycin, penicillin, streptomycin and sewage manufacturing and treatment items. Additionally used for electroplating, natural leather.
- Disodium phosphate is a complementary representative for the manufacture of responsive dyes. Used in place of borax in soldering and brazing.
The Manager has Something to Say
This is William, CEO of Zhishang Chemical Co., Ltd.
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Application of Disodium Phosphate
Disodium hydrogenphosphate is the precursor material required for the preparation of sodium pyrophosphate and sodium tripolyphosphate. At the same time, disodium hydrogenphosphate can also be used as food additives, medical reagents, water treatment agents, etc. , paint and other fields also have its use value.
Application 1
Application 2
Application 1
The modification effect of disodium hydrogen phosphate on water glass. Water glass is an inorganic binder for casting molds, which is colorless, odorless, non-toxic, inexpensive, and has no smoke, irritating or harmful substances during the casting process, such as resin sand and wet sand casting. Ditalk, furan, no black pollution, is a pollution-free and clean casting binder, which is one of the main casting binders that are widely used in the production of steel castings and meet the requirements of environmental protection. However, the poor collapsibility (sand production) of sodium silicate sand and the difficulty of regeneration and reuse limit its further expansion of application.
The study found that disodium hydrogen phosphate can improve the bonding strength of water glass and reduce the residual strength at high temperature. It is one of the commonly used modifiers to improve the collapsibility of water glass (sand). the hardening strength; disodium hydrogen phosphate and water glass can form [PO4, [SiO4] composite glass network; in the cooling process, due to the precipitation of β-Na2Si2O5, γ-Na3PO4 and 5Na2O from the [PO4, [SiO4] composite glass network P2O5·4SiO2 and other crystals destroy the integrity of the water glass adhesive film, and the adhesive film is cracked due to the great difference in shrinkage between phosphate glass and silicate glass, which improves the high temperature collapsibility of water glass (sand) .
Application 2
Production of sodium phosphate. Include the following preparation steps:
(1) heat disodium hydrogen phosphate to melt;
(2) in molten disodium hydrogen phosphate, add oxidant to form mixture, and the mass ratio of disodium hydrogen phosphate and oxidant is 1:0.005-0.03;
(3) adding activated carbon to the mixture, the mass ratio of the mixture and the activated carbon is 1000: 1-3, and filtering obtains a sodium phosphate solution;
(4) Adjust the pH value of the sodium phosphate solution to 3.5-13.5.
Preparation of Disodium Phosphate
Method 1
Method 2
Method 3
Method 4
Method 1
A certain amount of food-grade phosphoric acid is added to the reaction device, and under stirring, a certain concentration of sodium carbonate solution is added dropwise to the reaction vessel through a peristaltic pump to neutralize the phosphoric acid, and the pH value is controlled by a precision acidity meter. The reaction is carried out at a certain constant temperature, and when pH=8.34 is reached, it is the end of the reaction. Evaporate and crystallize the reacted liquid, then place it in an oven to dry and wait for weighing.
The optimal process conditions for the above-mentioned preparation of disodium hydrogen phosphate are as follows: the concentration of the selected solution is 25%, the temperature is 25°C, and the feeding rate is 20mL/min. The product produced under this process condition has a high yield of 93.3% and can meet the standards of food-grade additives.
Method 2
A method for preparing high-purity disodium hydrogen phosphate, comprising the following steps:
- Slowly add sodium bicarbonate (NaHCO3) into phosphoric acid (H3PO4) solution to carry out neutralization reaction, the reaction temperature is controlled at 80～100℃, 2h, the pH value is controlled between 8.7-9.2, and then cooled naturally to obtain hydrogen phosphate Disodium solution. Chemical reaction formula.
- The gained disodium hydrogen phosphate solution is carried out centrifugal dehydration, evaporated and concentrated, once again with deionized water to product fast rinsing once, remove the adsorption impurity molecule on the precipitation surface, then centrifugal dehydration, obtain disodium hydrogen phosphate crystal.
- The gained disodium hydrogen phosphate crystal is sent into a rake dryer for drying, and the drying condition is that the inlet temperature is 120 ° C, the fluidization gas flow rate is 0.3 m / s, and the drying time is 15 minutes, and finally stabilized: after the process conditions, potassium dihydrogen phosphate is obtained. The purity is 99.6%.
Method 3
A production method of ultra-low iron anhydrous disodium hydrogen phosphate, comprising the following steps:
- Disodium hydrogen phosphate dodecahydrate and pure water are stirred and heated to 60-90 ℃, completely dissolved, and filtered;
- Cool the above filtrate to 30-60℃, add calcium chloride aqueous solution with stirring, stir well for 10-20 minutes, pH 8.8-9.2;
- Let stand at 40℃ for 1 hour;
- Hot filtration, the filtrate is concentrated, and crystallized at room temperature;
- Suction filtration to obtain crystals, rinse with a small amount of pure water for 2-5 times, and drain;
- Crystallization, air drying, and then drying at 120-140 °C to obtain the finished product of anhydrous disodium hydrogen phosphate.
Method 4
A preparation method of food-grade anhydrous disodium hydrogen phosphate, comprising the steps of: adjusting temperature and concentration after filtering raw phosphoric acid liquid caustic soda; adding phosphoric acid and liquid caustic soda into a neutralization kettle, controlling the feeding speed of liquid caustic soda, and adding liquid caustic soda completely. After finishing, control the reaction temperature and control the reaction end point, and ripen. Concentrate the neutralized clear liquid; dehydrate; use fluidized bed drying to obtain food grade anhydrous disodium hydrogen phosphate.
The above method firstly controls the raw material treatment, neutralization process and parameters to effectively ensure the yield and purity of the synthetic product, and then realizes the process from concentration to crystallization to one-step drying through the fluidized bed process, thereby solving the common two-step method. The problem of preparing anhydrous disodium hydrogen phosphate. It effectively saves human resources, saves energy consumption, and effectively improves output and stable product quality.
Reference
- “MSDS”. Archived from the original on 2017-10-28.
- CN201810333000.1 A kind of preparation method of food grade anhydrous disodium hydrogen phosphate
- Klaus Schrödter, Gerhard Bettermann, Thomas Staffel, Friedrich Wahl, Thomas Klein, Thomas Hofmann “Phosphoric Acid and Phosphates” in Ullmann’s Encyclopedia of Industrial Chemistry 2008, Wiley-VCH, Weinheim. doi:10.1002/14356007.a19_465.pub3
Disodium Phosphate Supplier and Manufacturer
As a disodium phosphate supplier and manufacturer with a strict standard product quality system certificate, Zhishang Chemical has long been providing the best disodium phosphate raw materials to customers all over the world.
Over the years, relying on professional team experience and customer-centric team concept to meet customer needs in a timely manner, our company enjoys a high reputation in the world. At present, our company has served more than 6,000 customers and has established long-term cooperative relations with customers from many countries.
If you have a demand for disodium phosphate and related products, please contact our service staff Zhishang Chemical – White directly, and we will provide you with high-quality products at the best price.
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We will make samples before mass production, and after the sample is approved, we’ll begin mass production. Doing 100% inspection during production, then doing random inspection before packing.
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Our MOQ is 1kg. But usually we accept less quantities, such as 100g on the condition that the sample charge is 100% paid.
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The different quantity has different discount.
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1. ≤50kg, Express delivery recommended, usually called DDU service;
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Quality Control of Disodium Phosphate
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