Barium Boron Oxide CAS No. 13701-59-2

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

​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.

It is a new type of antirust pigment, also used in the industries of ceramics, papermaking, rubber and plastics.

​Barium Boron Oxide (Barium Metaborate)

CAS No.: 13701-59-2
EC No.: 237-222-4
Appearance: White powder.

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​Specifications

​Molecular Formula: B₂Ba₃O₆​Molecular Weight: 529.5994 g/mol​Log P: 1 (at 25 °C)​Melting Point: 1060 °C​Density: 3.25–3.35 g/cm³​Water Solubility: 822 mg/L (at 25 °C)​Vapor Pressure: 0 Pa (at 25 °C)

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​Advantages

​Functional Pigment:​Anti-corrosion, ​anti-mildew, ​anti-pollution, ​anti-chalking, ​discoloration prevention, and ​flame retardancy.

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​Applications

​Coatings Industry:Used as a ​corrosion inhibitor and ​flame retardant in paints, primers, and industrial coatings.​Plastics & Polymers:Enhances fire resistance and stability in composite materials.​Ceramics & Glass:Modifies thermal and chemical resistance properties.

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​Packaging & Storage

​Packaging: Standard industrial packaging (e.g., 25 kg/drum).​Storage: Store in a ​dry, ventilated area away from moisture and direct sunlight.

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Note: The original description mistakenly includes applications for ​food additives and ​cosmetics, which are unrelated to barium boron oxide. The above corrections reflect its ​actual industrial uses.

Summary:
Barium boron oxide is a ​versatile inorganic compound valued for its ​anti-corrosive and ​flame-retardant properties in coatings, plastics, and ceramics. Its ​low solubility and ​high thermal stability make it ideal for demanding industrial environments.

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