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CAS NO.527-07-1
High Quality(1-30)Kilogram
Concrete is a kind of composite material, which is made of cement, aggregate, admixture and water. Concrete is the largest amount of all artificial materials. Three quarters of concrete is aggregate, but the most active component in concrete is cement slurry. The properties and properties of concrete mainly depend on the properties of cement slurry. Admixtures in concrete can provide some beneficial effects, such as accelerating solidification, delaying solidification, making air bubble, reducing water consumption and increasing plasticity, etc. Usually, several admixtures are used in cement at the same time, and various admixtures can reinforce each other in some applications.
Sodium gluconate can be used as an admixture in concrete. Its functions in concrete are as follows: water reducer and retarder
Sodium gluconate is generally used alone, but it can also be used in combination with other retarders such as carbohydrates and phosphates. Sodium gluconate is a crystalline powder. It is produced under properly regulated and controlled conditions. This compound is chemically pure and non corrosive. The mass is constant. These characteristics can ensure its reliable and repeatable results in application.
Sodium gluconate as water reducer
By adding water reducing agent, the water cement ratio (w/c) can be reduced. By adding sodium gluconate, the following effects can be obtained: 1. Improve workability. When the water cement ratio (w/c) is constant, adding sodium gluconate can improve the workability. At this time, sodium gluconate acts as a plasticizer. When the dosage of sodium gluconate is less than 0.1%, the degree of improving the workability is directly proportional to the dosage. 2. Increase strength. When the cement content remains unchanged, the water content in the concrete can be reduced (i.e. w/c decreases). When the amount of sodium gluconate is 0.1%, the amount of water added can be reduced by 10%. 3. Reduce cement content. The water and cement contents are reduced in the same proportion, and the w/c ratio remains unchanged.
Sodium gluconate as retarder
Sodium gluconate can significantly delay the setting time of concrete. When the dosage is less than 0.15%, the logarithm of the initial setting time is in direct proportion to the dosage, that is, the dosage is doubled, and the initial setting time is delayed to ten times, which makes the working time extend from a few hours to a few days without damage to the strength. This is an important advantage especially in hot weather and when it needs to be placed for a long time.
Used as glass bottle cleaner
The cleaning of hundreds of millions of glass bottles in the beverage industry, food industry and brewing industry, such as soda bottles, beer bottles, milk bottles, cans, soy sauce bottles, wine bottles, etc., is a very important thing, and the pharmaceutical formula of cleaning agent is a difficult technical work. A relatively ideal medicament has not yet appeared in China. The main problems are: the descaling force is not strong, and it is easy to block the nozzle and pipeline of the bottle washer; The decontamination of bottle stickers and bottle neck rust is not ideal; The micro residue after washing is not ideal for food safety (such as phosphate residue); The washing water is discharged into a public hazard (which cannot meet the national standards). If sodium gluconate is used as the main body in the pharmaceutical formula of its glass bottle cleaner, the above problems can be solved. (in the 1980s, large-scale tests have been carried out in Shanghai soda factory and Shanghai brewery, and there are identification certificates) this application has not been developed in China, and if it forms a market, it has great potential.
Used as water stabilizer
Sodium gluconate has excellent corrosion and scale inhibition, so it is widely used as a water quality stabilizer, such as circulating cooling water system in petrochemical enterprises, low-pressure boilers, internal combustion engine cooling water system and other treatment agents. Because it has the following specific advantages: ⑴ it has obvious coordination effect. It is suitable for molybdenum, silicon, phosphorus, tungsten, nitrite and other formulas. Due to the coordination effect, the corrosion inhibition effect is greatly improved. ⑵ the corrosion inhibition rate increases with the increase of temperature. Generally, the inhibition rate of corrosion inhibitor decreases with the increase of temperature, or even completely loses its function. However, sodium gluconate is on the contrary, and the corrosion inhibition rate increases with the increase of temperature within a certain range. For example, in the test of carbon steel and other materials, the temperature rises from 77 ℃ f to 120 ℃ F, and the buffer rate increases by more than 5% on average. Therefore, sodium gluconate, with its unique characteristics, is ideal as a corrosion inhibitor for higher temperature systems or variable temperature systems from low temperature to high temperature. ⑶ strong scale inhibition ability: it has a strong complexation ability to calcium, magnesium and iron salts, so it has a strong scale inhibition ability, especially for fe3+, and even has an excellent chelation effect in the whole pH range. (4) eliminate public hazards. Using sodium gluconate as corrosion and scale inhibitor of circulating cooling water to eliminate public hazards is an incomparable advantage of other corrosion and scale inhibitors used.
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Quick Details
Classification: Pharmaceutical Intermediates
Cas NO.:527-07-1
Name:Sodium Gluconate
Formula:C6H11NaO7
Boiling Point:673.6ºC at 760 mmHg
Melting Point:206 °C (dec.)(lit.)
Density:1.763g/cm3
Flash Point:375.2ºC
PSA:141.28000
LogP:N/A
Purity: 99%
Refractive index:N/A
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