Lithopone 30% CAS No. 1345-05-7

Lithopone 30% CAS No. 1345-05-7

Fluorine Chemical, Lithopone 30% CAS No. 1345-05-7, white powder, relative density: 4.136 ~ 4.39 g / mL, insoluble in water. It is a mixture of zinc sulfide and barium sulfate. Inorganic white pigment, widely used in plastics such as polyolefin, vinyl resin, ABS resin, polystyrene, polycarbonate, nylon and polyoxymethylene, and white pigments of paints and inks. It is less effective in polyurethane and amino resins and less suitable in fluoroplastics. It is also used for coloring of rubber products, paper, varnish, tarpaulin, leather, watercolor paint, paper, enamel, and the like. Used as a binder in the production of electric beads.

Send InquiryChat Now
Product Details

Lithopone 30% CAS No. 1345-05-7

Lithopone, white powder, relative density: 4.136 ~ 4.39 g / mL, insoluble in water. It is a mixture of zinc sulfide and barium sulfate. Inorganic white pigment, widely used in plastics such as polyolefin, vinyl resin, ABS resin, polystyrene, polycarbonate, nylon and polyoxymethylene, and white pigments of paints and inks. It is less effective in polyurethane and amino resins and less suitable in fluoroplastics. It is also used for coloring of rubber products, paper, varnish, tarpaulin, leather, watercolor paint, paper, enamel, and the like. Used as a binder in the production of electric beads.

English name: Lithopone

Chemical formula: BaO5S2Zn2

Molecular weight: 412.23

CAS registration number: 1345-05-7

EINECS accession number: 215-715-5

Molar mass: 412.23


Lithopone 30% CAS No. 1345-05-7 / Physical data

1. Properties: white powder, a mixture of zinc sulfide and barium sulfate.

2. Relative density: 4.136 to 4.39 g/mL.

3. Solubility: insoluble in water.

4. Refractive index: 1.70~2.25


Lithopone 30% CAS No. 1345-05-7 / Production Method

1. Using roasting and leaching method. The reaction equation is as follows:

2C+O2→2CO2

BaSO4+C→BaS+4CO

BaSO4+4CO→BaS+4CO2

BaS+ZnSO4→ZnS·BaSO4

The natural barite containing more than 95% of barium sulfate is mixed with anthracite in a ratio of 3:1 (mass), and is pulverized to a diameter of about 2 cm or less to enter a reduction furnace, and the front stage of the furnace temperature is controlled by 1000 to 1200 ° C, and the latter stage is 500 to 600 ° C, the reduction furnace rotates at a speed of 80s per revolution, the reaction conversion rate is 80% to 90%, the obtained barium sulfide enters the leaching device, the control temperature is above 65 ° C, and the content of barium sulfide is 701%, and then enters the clarification. The barrel is clarified and then added with zinc sulfate to control the zinc sulfate content to be greater than 28%, and the pH is 8-9, and a mixture of barium sulfate and zinc sulfide having a density of

1. 296 to 1.357 g/cm3 is obtained. The reaction solution is subjected to pressure filtration through a plate frame to obtain a cake-like lithopone powder having a water content of not more than 45%. The mixture is calcined in a dry roaster to change the crystal form of the lithopone, and then acid-washed with sulfuric acid at a temperature of 80 °C. Finally, it is washed with water, reinforced with coloring agent, pressure filtration, drying and milling.

2. Barite calcination method A solution of barium sulfide is prepared. The sulfuric acid and zinc oxide are reacted, purified by adding potassium permanganate and zinc powder, and compressed to obtain a zinc sulfate solution. Then, the prepared barium sulfide solution is mixed and subjected to a metathesis reaction to obtain a mixture of zinc sulfide and barium sulfate, and then the precipitate is subjected to pressure filtration, calcination, wet grinding, drying, and pulverization to obtain a zinc white product.

ZnSO4+BaS→ZnS+BaSO4

3.   The calcined product obtained by the ordinary zinc bismuth method is slurried into a slurry, which is sequentially treated with sodium silicate, aluminum sulfate or sodium aluminate and a surfactant, and then filtered, washed, dried and pulverized.


Lithopone 30% CAS No. 1345-05-7 / Nature and stability

Does not work with hydrogen sulfide and alkaline solutions. It is easy to decompose in the presence of acid to produce hydrogen sulfide gas. It is easily oxidized in the air and deteriorates after moisture. Whiteness and hiding power are strong.


Lithopone 30% CAS No. 1345-05-7 / Application

1.Mainly used in latex paints, water-based paints, inks, rubber, plastics, etc., replacing 30% of rutile-type titanium dioxide in latex paints, still maintaining the original film properties, and has the effect of reducing costs.

2.Inorganic white pigment. Widely used as a white pigment for plastics, paints and inks such as polyolefins, vinyl resins, ABS resins, polystyrene, polycarbonate, nylon and polyoxymethylene.

3.Used for coloring rubber products, varnishes, leather, paper, enamel, etc.

4.Used as a white pigment, the hiding power is second only to titanium dioxide, but stronger than zinc oxide. The hiding power increases as the ZnS content increases, and the light resistance also improves, but the acid resistance decreases.

5.It is widely used in the paint industry to improve the durability of curing of zinc-white coatings and to prepare various color paints.


Lithopone 30% CAS No. 1345-05-7 / Storage method

Store in a cool, ventilated, dry warehouse. Should pay attention to heat and moisture. Store separately from acid products. Lightly load and unload during handling to prevent damage to the packaging. Packed in woven bags lined with polyethylene plastic bags, each bag has a net weight of 25kg. In case of fire, use water and various fire extinguishers to save.


Hot Tags: lithopone 30% CAS No. 1345-05-7, China, suppliers, manufacturers, factory, price, for sale, free sample
Related Products
Inquiry

Copyright © Only Fluorine Chemicals. All Rights Reserved.