Uses of Sodium Gluconate

Sodium gluconate is an industrial raw material and cannot be directly used by the human body. In industry, sodium gluconate has many uses and we can see it in many scenarios. When it comes to purchasing sodium gluconate, many purchasing personnel need to have many years of experience to complete this task. Sodium gluconate is so widely used, so what are the uses of sodium gluconate?

1. Sodium gluconate as a water reducer

By adding water reducing agents, the water to cement ratio (W/C) can be reduced. The following effects can be achieved by adding sodium gluconate: 1. Improve workability. When the water to cement ratio (W/C) remains unchanged, adding sodium gluconate can improve workability. At this time, sodium gluconate acts as a plasticizer. When the amount of sodium gluconate added is below 0.1%, the degree of improvement in workability is proportional to the amount added. 2. Improved strength: When the cement content remains the same, the water content in the concrete can be reduced (i.e. W/C is reduced). When the addition 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 content are reduced in the same proportion, and the W/C ratio remains unchanged. At this time, sodium gluconate is used as cement reducer. In general, two aspects are important for the performance of concrete: shrinkage and heat generation.

2. Sodium gluconate as a retarder

Sodium gluconate can significantly delay the initial and final setting time of concrete. When the dosage is below 0.15%, the logarithm of the initial solidification time is directly proportional to the dosage, that is, if the dosage is doubled, the initial solidification time is delayed ten times, which extends the working time from a few hours to several days without compromising the strength. This is an important advantage especially on hot days and when the storage time is longer.

3. Used as a special cleaning agent for glass bottles

Beverage industry, food industry, brewing industry use hundreds of millions of glass bottles every day, such as soda bottles, beer bottles, milk bottles, can bottles, soy sauce bottles, wine bottles, etc. Cleaning is a very important task, and the formulation of cleaning agents is a difficult technical task. At present, there is no ideal medicine in China. The main problems are: weak descaling ability, easy to clog the nozzle and pipeline of the bottle washing machine; poor descaling ability for bottle labels and bottle neck rust; trace residues after washing are not safe for consumption (such as phosphate residues); washing water discharge becomes a public nuisance (cannot meet national standards). If sodium gluconate is used as the main component in the formula of its glass bottle cleaning agent, the above problems can be easily solved. (Large-scale experiments were conducted in Shanghai Soda Factory and Shanghai Brewery in the 1980s, and there are appraisal certificates.) This application has not yet been developed in China. If a market is formed, the potential is huge.