Sodium formate

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Sodium formate

Sodium formate is a chemical compound get as a result of processing of pentaerythritol. Also called sodium salt of formic acid. The basis of this substance is pentaerythritol, together with its derivatives.

Wide application of sodium formate is concentrated in the construction, chemical and leather industry.

Sodium salt of formic acid in its pure form has a crystalline structure. Often this chemical is white in color, but sometimes it can have shades of green and gray. Contaminants in the bulk often no.

Formula of sodium formate, HCO2Na. Permissible humidity dry crystalline substances should not exceed 3%.

It the compound quickly dissolves in water, lower solubility seen in the interaction of sodium formate with alcohols, insoluble in esters. In itself this substance is not able to fire, but it is worth noting, when interacting and working with the sodium formate is strictly prohibited the presence of open flame.

Plasticizing properties of sodium formate has found its place in construction. Sodium formate, for example, as an additive is injected into the concrete and reinforced concrete structures monolithic, and collapsible. This chemical the compound acts as antifreeze additive, adjunct temperatures below -5°C.
The allowable amount of sodium formate in the concrete is:

• 2% of the total mass at a temperature range of -5°C,

• 3% of the total mass at -10°C,

• 4% of the total mass at -15°C.

Before the introduction of a solution of formate sodium in the concrete, it is diluted in warm water. For more uniform and plastic mass, the resulting composition is administered superplasticizers, for example, superplastifiers-3.

Is be noted that this additive is banned in construction intense designs. It can be introduced into the concrete mix that will be used for water and gas facilities, construction of structures for electrified transport.
Sodium formate is used in the manufacturing process of deicing materials. It helps to reduce the level of negative impact on metal nodes transport. He is considered a corrosion inhibitor. Sodium formate added to concrete structure for polygons. As a result, the chemical increases concrete strength, reduces the freezing point of water, prolongs stability of concrete cover.

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