barium diboron tetraoxide
Barium Boron Oxide
CAS: 13701-59-2
Molecular Formula: B2BaO4
barium diboron tetraoxide - Names and Identifiers
| Name | Barium Boron Oxide |
| Synonyms | BARIUM BORATE bariumdiborate BARIUM-M-BORATE BariumMetaborate BARIUM METABORATE Barium Boron Oxide Barium boron oxide Bariumdibortetraoxid barium dioxidoboranyl Barium diboron tetraoxide barium diboron tetraoxide boranolate, oxo-, barium salt Bis(metaboric acid)barium salt |
| CAS | 13701-59-2 |
| EINECS | 237-222-4 |
| InChI | InChI=1/2BO3.3Ba/c2*2-1(3)4;;;/q2*-3;3*+2 |
barium diboron tetraoxide - Physico-chemical Properties
| Molecular Formula | B2BaO4 |
| Molar Mass | 222.95 |
| Density | 3.25~3.35 |
| Melting Point | 1060℃ |
| Water Solubility | 822mg/L at 25℃ |
| Vapor Presure | 0Pa at 25℃ |
| Physical and Chemical Properties | Character white orthorhombic crystalline powder. melting point 1060 ℃ relative density 3.25~3.35 solubility it is slightly soluble in water, but soluble in hydrochloric acid. white orthorhombic crystalline powder, slightly soluble in water, soluble in hydrochloric acid, with anti-rust, anti-chalking, high temperature, anti-explosion and other functions. Barium metaborate is easy to absorb moisture and agglomerate during storage and transportation. It has high water solubility, poor compatibility in various resins and poor firmness in paint film, and is not suitable for working pigments. However, if the modified barium metaborate is made by coating barium metaborate with polymerized and amorphous hydrated silica, the solubility of barium metaborate can be reduced, and the barium metaborate absorbs moisture during storage, so that the amount of salt in the saturated solution is reduced, less new grains capable of binding crystals are precipitated upon gradual drying and cooling, achieving a reduction in agglomeration of the modified barium metaborate during storage. Therefore, the actual product is the modified barium metaborate, which contains a certain amount of silica and crystal water, and the theoretical formula is Ba(BO2)· H2O. Relative molecular mass 241.0, commercial pigments contain at least 90% of barium metaborate [Ba(BO)2 · H2O]. The modified barium metaborate product is composed of crystalline particles, and the particle size range of the commodity is generally 0.35~35 μm, The average particle size is about 8 μm, the effective particle size is 3 μm, and the modified barium metaborate is dehydrated, but it is not hygroscopic and does not absorb moisture from the air. When heated to 1050 DEG C when melting, modified barium metaborate slightly soluble in water, water solubility in 21 deg C up to 0.4%, the typical product is 0.3%, soluble in hydrochloric acid. With anti-rust, anti-powder, anti-mildew, high temperature and flame retardant effect. |
| Use | Used in coatings, Ceramic Industry modified barium metaborate used in the coating industry primer, topcoat, is a new type of non-toxic anti-rust pigment, also used in ceramics, paper, rubber, textile and plastic industries. |
barium diboron tetraoxide - Nature
Open Data Verified Data
white orthorhombic crystalline powder. Barium metaborate is known to have one water, two water, four water, five water four hydrate, slightly soluble in water, soluble in hydrochloric acid. The most important in industry are dihydrate and tetrahydrate, whose pH value is 10.2. When tetrahydrate is heated to above 70 ℃, it begins to lose water and reaches 140 ℃. Anhydrous barium metaborate melts at 1015 ℃, and its relative density is 3. 42 after full dehydration.
Last Update：2024-01-02 23:10:35
barium diboron tetraoxide - Preparation Method
Open Data Verified Data
The mixed material of barite and pulverized coal is calcined by borax barium sulfide method, and the barium sulfide liquid is obtained by hot water leaching in an extractor, and then separately metered into the reactor with borax aqueous solution and sodium silicate aqueous solution, after adding the three kinds of materials, the reactor was sealed, heated to 110 ℃ ± 5 ℃, stirred for 2H, cooled to 70~80 ℃, the precipitate was centrifuged, washed with water, dried, after pulverization, a barium metaborate product was obtained.
Last Update：2022-01-01 10:58:42
barium diboron tetraoxide - Use
Open Data Verified Data
used in the paint industry primer, topcoat, is a new type of anti-rust pigment, also used in ceramic, paper, rubber and plastic industries.
Last Update：2022-01-01 10:58:41
barium diboron tetraoxide - Safety
Open Data Verified Data
- packed with two-layer polyethylene plastic bags or four-layer Kraft paper bags for external use. 20kg or 25kg net weight per bag. Should be stored in a cool, ventilated, dry warehouse. Stacking with oil substances is strictly prohibited.
- in the production process, all raw materials have BaS, and its aqueous solution is strongly alkaline and corrosive. In case of acid release of hydrogen sulfide, in the humid air oxidation. Toxic. Attention should be paid to protection.
Last Update：2022-01-01 10:58:42
barium diboron tetraoxide - Reference Information
| LogP | 1 at 25℃ |
| EPA chemical substance information | information provided by: ofmpeb.epa.gov (external link) |
| Application | barium metaborate is a white functional pigment, which has anti-rust, anti-mildew, anti-pollution, anti-pulverization, prevent discoloration, flame retardant and other effects, is a multi-functional non-toxic anti-rust pigment, used in the manufacture of primer, topcoat anti-rust coatings. Barium metaborate can also be used in the ceramic, paper, rubber and plastic industries. |
| Use | used in coating and Ceramic Industry used as primer and topcoat in coating industry, is a new type of anti-rust pigment, also used in ceramic, paper, rubber and plastic industries. The Modified Barium metaborate is used as a primer and top coat in the coating industry. It is a new type of non-toxic anti-rust pigment and is also used in ceramic, paper, rubber, textile and plastic industries. |
| production method | borax barium sulfide method. Reaction equation: BaSO4 C → BaS CO2 ↑ 2NaOH 2, barium sulfide was concentrated to 14-16g/L and heated to 55-70 °c. Borax is made up to 0.22-0.28g/L and the temperature is 70-85 ℃. Both of them are added into the reactor in parallel flow, and then the metered sodium silicate aqueous solution is added. After adding the three kinds of materials, the pH value is adjusted to be greater than 11. The reactor was closed, heated to 110~140 ℃, stirred for 1~6h, cooled to 70~80 ℃, and the precipitate was centrifuged, washed with water, dried and crushed, barium metaborate finished product was prepared. The mixture of barite and pulverized coal is calcined by borax barium sulfide method, and the barium sulfide solution is obtained by hot water leaching in an extractor, and then separately metered into the reactor with borax aqueous solution and sodium silicate aqueous solution, after adding the three kinds of materials, the reactor was sealed, heated to 110 ℃ ± 5 ℃, stirred for 2 h, cooled to 70~80 ℃, the precipitate was centrifuged, washed with water, dried, after pulverization, a barium metaborate product was obtained. BaSO4 C → BaS 2CO2 ↑ 2NaOH 2BaS Na2B4O7 → 2Ba(BO2)2↓ 2Na2S H2O |
Last Update：2024-04-10 22:29:15
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