SODIUM DISILICATE (Sodium silicate) 80%, 1kg

SODIUM DISILICATE (Sodium silicate) 80%, kg

5.00 €

CERTIFICATE OF ANALYSIS

Sodium silicate, CAS 1344-09-8, disodium disilicate, INCI SODIUM SILICATE, sodium salt of silicic acid, liquid glass

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Parameter

Feature

Sodium disilicate

Sodium silicate, disodium disilicate, sodium salt of silicic acid

Formula

Na2O(SiO2)2

Structure

Sodium disilicate 2D structureSodium disilicate in 3D spatial structure

IUPAC

disodium;oxido-[oxido(oxo)silyl]oxy-oxosilane

INCI

SODIUM SILICATE

CAS

1344-09-8

Clay mass

182.147 g/mol

Density

0,80 g/cm³ prie 20 °C (bulk density)

Solubility

Water solubility is miscible in any proportion and is completely water soluble due to its hydrated form. Insoluble in organic solvents

Sodium disilicate is a compound of the sodium silicate group with the formula Na2O(SiO2)2.The anion is a short polymer which is a colourless/white transparent solid that is completely soluble in water. The product has a wide range of uses, including in cements, coatings, passive fire protection, textiles and woodworking, the manufacture of refractory ceramics, as an adhesive and in silica gel production. Commercial product supplied in solid form.

In the detergent industry, sodium disilicate is a versatile product with excellent buffering properties, effective corrosion inhibition, good bleach stabilisation and binding properties. In the manufacture of various detergents, sodium disilicate is used as an alternative to STPP (Sodium Tripolyphosphate), using the same amount. It is commonly found in phosphate-free detergents. The product has a good washing capacity and can be used in combination with zeolites. Sodium disilicate is excellent at chelating (binding) calcium and magnesium ions in water, thus improving the washing process. Sodium disilicate also protects surfaces from the damaging effects of more aggressive components by coating the surfaces to be washed with a micro-film.

In the textile industry, sodium disilicate is used as a dyeing and printing auxiliary, where it can be used as a chelating agent for pre-cleaning of grease and dirt as well as a stabiliser for hydrogen peroxide bleach.

In agriculture, sodium disilicate can be used as a silica fertiliser to improve disease and insect resistance, stress tolerance, crop quality and yield. It is applied by foliar spraying. Application rate 1,0 - 3,0 kg/ha CAUTIONDo not mix with other micronutrient fertilisers as insoluble compounds may form.

In water treatment, sodium disilicate is used as an aluminium coagulant and iron and manganese deflocculant in wastewater treatment plants or as a drinking water purification agent, which binds iron and manganese ions to prevent discolouration or darkening of the water. Sodium disilicate binds to colloidal molecules to form larger complex derivatives which settle to the bottom and can be filtered out.

In cosmetics, sodium disilicate is used in hair care products such as hair bleaching powders, which are used to lighten hair colour. These products are sold to consumers as a dry powder which must be mixed with aqueous solutions of hydrogen peroxide before use. Mixing the components of the bleaching powder and the hydrogen peroxide solution produces an activated bleaching composition which is then applied to the hair. Sodium disilicates are added to the bleaching powder to ensure the correct basic pH of the activated bleaching paste for optimal oxygen release and excellent bleaching results.

In the automotive industry, sodium disilicate is used as a pH buffer and corrosion protection in coolants. The VW standard G12++ specifies that the coolant must contain up to 2% silicate, so sodium disilicate is used in this case because of its better solubility and performance compared to sodium metasilicate.

In ceramics, sodium silicate is used as a deflocculant in the casting process to reduce the viscosity and the amount of water needed to soften the clay. It is also used to create a fissure effect in ceramics. It is also used in ceramic grinding, in place of traditional STPP (sodium tripolyphosphate) and sodium metasilicate, where it effectively cleans, abrades and binds calcium and magnesium ions from ceramic materials.

In the metal industry, the use of sodium disilicate-based binder systems promotes a cleaner foundry environment as these binder systems are non-toxic, virtually fume-free, odourless and easy to use. The moulds used in metal foundries are often made of sand. One of the simplest mould-making processes used in foundries is the sodium silicate and CO2 process. In this process, an appropriate amount of sodium disilicate is mixed with sand. The sand/silicate mixture is given an initial stiffening by injecting CO2 gas under pressure through the mould. The initial hardening is caused by a chemical reaction between the CO2 gas and sodium disilicate. The latter's alkali is partially neutralised to form a silica gel which binds the sand particles into a rigid mass. Subsequently, as the mixture loses moisture, further bonding strength is ensured. Another way of achieving this partial neutralisation and hardening of the sodium disilicate is by the use of organic esters added in very small quantities. Often the binders of the metallic forms are sodium disilicate mixed with certain organic substances, such as sugar, which are added to the silicate to impart special properties.

In schools, it is used in experiments for the rapid growth of crystals and the formation of coloured precipitates.

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*- The pictures of the goods may not correspond to the actual appearance, colour, assembly or shape of the goods and their packaging. The information in the product description is of a general nature and may not be identical to the information on the product packaging. The information given on stock and prices may in some cases differ from the actual price and stock of the goods

Signal word: Caution

Danger icons:

Danger phrases:

H303 May cause harm if swallowed.

H315 Irritating to skin

H319 Severely irritating to eyes

Precautionary statements:

P312 If you feel unwell, seek medical attention.

P302+P352 In case of contact with skin: wash with plenty of soap and water.

P332+P313 In case of skin irritation: seek medical advice.

P362: Remove contaminated clothing and wash before reuse.

P305 + P351 + P338 In case of contact with eyes: Rinse gently with water for several minutes. Remove contact lenses if present and easy to do so. Continue rinsing.

P337 + P313 If eye irritation persists: seek medical advice.

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