Molecular Formula: B₂BaO₄
Molar mass: 222.95 g/mol
EINECS: 237-222-4
Density: 3.25~3.35
Melting point: 1060°C
Appearance: Orthorhombic crystalline white powder
Solubility: Slightly soluble in water, soluble in Hydrochloric acid
Product categories: Industrial/Fine Chemicals;Inorganics
Structure of Barium metaborate (CAS NO.13701-59-2):

H-Bond Donor: 0
H-Bond Acceptor: 2
IUPAC Name: Barium(2+); dioxidoboron
Canonical SMILES: [B]([O-])[O-].[Ba+2]
InChI: InChI=1S/BO2.Ba/c2-1-3;/q-2;+2 
InChIKey: MLPBXDBEWJPBBI-UHFFFAOYSA-N

 Barium metaborate (CAS NO.13701-59-2) can be used for the primer and topcoat in the paint industry, and also used in ceramics, paper, rubber and plastics industries. It is a new type of anti-rust pigments.

Take the mixture of Barite with pulverized coal firing; after the flooding by thermal extraction, and then with the Borax solution and sodium Silicate in aqueous solution into the respective reactor. Keep them in device closed, and heated to 110°C ± 5°C, and stirred  for reacting 2 h, and then take them cooled to 70 ~ 80°C. Sediment is dealed by centrifugation, washing, drying, and grinding to get Barium metaborate (CAS NO.13701-59-2).
BaSO₄ + C → BaS +2 CO₂ ↑

 Barium metaborate , its cas register number is 13701-59-2. Barium metaborate (CAS NO.13701-59-2) also can be called Barium diborate ; Barium borate and Barium diboron tetraoxide .