Sodium chromate tetrahydrat (CAS: 10034-82-9)

Sodium chromate is Mainly used in the manufacture of chemical

reagents, chromium salt products and pigment, etc.

Physical Properties

Four hydrated sodium chromate (10034-82-9) properties: this product yellow

translucent triclinic crystalls or crystal powder. Soluble in water, slightly soluble

in ethanol. Yellow translucent triclinic crystalls or crystal powder. Soluble in water,

slightly soluble in ethanol. character Yellow translucent triclinic crystalls or crystal

powder. Solubility in water, slightly soluble in ethanol.

Generation Method

For the preparation of low sulfate content of products should be used sodium dichromate

and sodium chromate liquor in alkaline solution. Neutralization of alkaline solution of

sodium chromate and is joined, together with the human sodium dichromate and the reaction

mother liquor by filtration, removal of dross, the filtrate was concentrated by evaporation of

the sodium chromate to more than 50 ° Bé, chromium sodium about 700 g / L (Na2Cr2O7 ·

2H2O meter), feed fluid must be clarified to prevent suspended impurities into the crystal,

and then cooled to below 40 ℃, solid-liquid separation, the mother liquor returned to the

evaporator, the following 68 ℃ crystals dried prepared sodium chromate finished. The

resulting precipitate clarification process to return to the alkaline solution of sodium chromate and processes.

Remark

Sodium chromate tetrahydrate (10034-82-9) Preparation Method: For the production of low sulfate

content of the product should be used sodium dichromate and sodium chromate liquor in alkaline solution.

Neutralization: Sodium chromate alkaline neutralizer was added, plus one in the mother liquor of sodium

dichromate and the reaction was filtered to remove the dross, the filtrate was concentrated by evaporation

of the sodium chromate to more than 50 ° Bé, containing sodium chromate about 700 g / L (Na2Cr2O7 ·

2H2O meter), feed fluid must be clarified to prevent suspended impurities into the crystal, and then cooled

to below 40 ℃, solid-liquid separation, the mother liquor returned evaporation, crystallization and dried at 68 ℃

less , sodium chromate to obtain the finished product. The resulting precipitate clarification process to return to

the alkaline solution of sodium chromate and processes. Safety: This product is usually on the water is slightly

harmful, not to undiluted product or large quantities of it to reach ground water, water course or sewage system,

without the permission of the government not allow material to be released to the environment.