Calcium formate reduced the initial and final setting times of CTB mixtures, while The addition of sodium sulfate relatively affects the setting times by accelerating both initial and final setting times with the increasing proportion of the content.
Dosage
Two or more chemicals are often used in combination to increase the concentration and improve the performance of liquid admixtures, which are preferred to powders for accurate dosing of concrete. Calcium formate sodium nitrite blends have been used extensively, with the added advantage of anti-corrosion properties claimed for their use
Useful Area
Calcium Format Uses
Leather Tanning
Calcium formate is used extensively in the leather industry as a masking agent in the chrome-tanning process. The addition of calcium formate to the tannage formulation promotes faster, more efficient penetration of the chrome in the leather. Calcium formate can also be used as a replacement for formic acid in the pickling operation.
Cement Additive
As an additive to grouts and cement, calcium formate imparts a number of properties desirable in the final product, e.g. increased hardness and decreased setting time in comparison to ordinary cements. The addition of calcium formate is desirable for work at low temperature and for inhibition of corrosion of metal substrates. It is also effective in the prevention of efflorescence. When used in gypsum board, calcium formate functions as a fire retardant.
Silage Treatment
Calcium formate is commonly used as a component of an ensiling agent for silage treatment. The use of calcium formate in the silage suppresses the formation of side reaction products such as propionic acid, while promoting the formation of desirable lactic acid in anaerobic fermentation.
Gas Generation
A mixture of calcium formate with ammonium nitrate or with chlorate, perchlorate, peroxide, superoxide or permanganate of an alkali metal will rapidly evolve large volumes of gas when ignited. Because the released gases are cool, non-poisonous and non-irritating, they could be used for the inflation of automobile passenger restraint bags or other similar applications. gases are cool, non-poisonous and non-irritating, they could be used for the inflation of automobile passenger restraint bags or other similar applications.
Flue-gas Desulfurization
SOx is abated in the flue-gases from the burning of high-sulfur fuel oil if the oil has been emulsified with a solution containing calcium formate before burning. As much as 95% of the SOx is removed.
Safety Explosives
Calcium formate can be used as the fuel component in explosives designed to have improved deflagration behaviour. Such explosives are suitable for use in hazardous atmospheres often encountered in coalmines.
De- icing agent
Mixtures of Calcium Formate with urea are excellent agents for the melting of ice. Less corrosion of steel and cement surfaces is observed than with other de-icers.
Other uses
Calcium formate can be used as an additive to improve solution stability of various resins, as a corrosion inhibitor in moulding and wire-drawing operations, or as a catalyst in place of calcium acetate.
Buffered solutions
Buffered solutions exhibiting a range of pH values can be obtained by varying the ratio of formic acid to the salt as in table below:
|
Buffered Solutions |
|
Calcium Formate 0.1N, ml |
10 |
20 |
30 |
40 |
50 |
60 |
70 |
80 |
90 |
|
Formic Acid 0.1N, ml |
90 |
80 |
70 |
60 |
50 |
40 |
30 |
20 |
10 |
|
pH |
2.81 |
3.10 |
3.32 |
3.50 |
3.67 |
3.80 |
4.0 |
4.23 |
4.58 |
Animal Feed Additive
Calcium formate is an organic salt suitable for use in pig and poultry diets. It acts as a feedstock preservative and has an acidifying effect on the gastro-intestinal tract, which promotes good gut-health. The efficiency of pig and poultry feedstock digestion is dependent on the indigenous micro-organism concentration in the gastro-intestinal tract. With the approaching ban on the use of prophylactic antibiotics in animal feed as a means to control disease and promote growth, alternatives are needed to limit the proliferation of pathogenic bacteria in the gut which can impair feedstock digestion as well as cause enteric diseases such as E. Coli and Salmonella. Acidifiers such as calcium formate preserve the feedstock before consumption and lower the pH in the gastro-intestinal tract, creating unfavourable conditions for these bacteria to grow.
Industrial Usage
Calcium Frmate also used as additives for Tile adhesives.
Calcium Formate also used in concrete - acceleration and improves water stability and leather tanning.
Calcium Formate is crystalline form & free flowing product and is used as an additive in construction chemicals as cement repairs to improve the accelerating hardening time. Calcium Formate is well known additive for the hardening of grouts, mortars, and repair products in earliest time.
Calcium salts and formic acid. Calcium Formate when used in repair materials significantly improves the physical and rheological properties of tile adhesives also.
Adding Calcium Formate in cement mix shorten open time, improves adhesions and is a highly strength improving additive. At the given desired dosage of calcium formate in cement-based mortars and grouts reduce low skin formation & improves water stability.
The other applications of Calcium Formate are in Agriculture, Food, Feed, Leather, and other industrial applications.
In Agriculture Calcium Formate is preferred because water-solubility and with the strong compatibility with plant tissues, it quickly reaches the areas of the plant where the deficiency occurs.
Calcium Formate highly suitable in from pre-flowering to harvest & in absence of nitrogen because it is present calcium nitrate allows the use of calcium Formate in contact with vigorous plants. Using Calcium Formate improves the organoleptic properties of fruits and vegetables.
In Leather Industry Calcium formate is used as a masking agent in the chrome-tanning. The calcium formate in the formulation promotes faster, more efficient penetration of the chrome in the leather.
The Calcium formate can also be used as a replacement for formic acid in the pickling operation.
De-icing Agent -The mixtures of calcium formate with urea are excellent agents for the melting of ice. Less corrosion of steel and cement surfaces is observed than with other chloride based de-icing agents.