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Beta-Barium Borate (BBO)

Barium Metaborate

CAS #:

Linear Formula:


MDL Number:


EC No.:



(2N) 99% Beta-Barium Borate
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(3N) 99.9% Beta-Barium Borate
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(4N) 99.99% Beta-Barium Borate
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(5N) 99.999% Beta-Barium Borate
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Beta-Barium Borate (BBO) Properties

Compound Formula


Molecular Weight

222.95 g/mol


White powder or crystals

Melting Point

1095 °C

Density (Theoretical)

3.85 g/cm3

Exact Mass

223.904 g/mol

Monoisotopic Mass

223.904 g/mol

Refractive Index

ne = 1.5534, no = 1.6776

Thermal Conductivity

^c, 1.2 ||c, 1.6 W/m/°K

Electrical Resistivity

> 1011 ohm-cm

Specific Heat

1.91 J/cm2 °K



Beta-Barium Borate (BBO) Health & Safety Information

Signal Word Warning
Hazard Statements H302-H332-H312
Hazard Codes Xi
Precautionary Statements P264-P270-P301+312-P330-P501
Risk Codes R20/22
Safety Statements S28
RTECS Number CQ9570000
Transport Information UN1564 6.1/PG II

About Beta-Barium Borate (BBO)

Beta-Barium Borate (barium metaborate) is a nonlinear crystalline solid used in photo optic applications. American Elements produces to many standard grades when applicable, including Mil Spec (military grade); ACS, Reagent and Technical Grade; Food, Agricultural and Pharmaceutical Grade; Optical Grade, USP and EP/BP (European Pharmacopoeia/British Pharmacopoeia) and follows applicable ASTM testing standards. Typical and custom packaging is available. Additional technical, research and safety (MSDS) information is available as is a Reference Calculator for converting relevant units of measurement.

Beta-Barium Borate (BBO) Synonyms

BBO opticdal crystals; Barium metaborate; Beta barium borate; Barium boron oxide; Barium diborate; Barium diboron tetraoxide; barium(+2) oxido-oxo-borane; β-BaB2O4; BaB2O4; boric acid barium salt

Beta-Barium Borate (BBO) Chemical Identifiers

Linear Formula


Pubchem CID


MDL Number


EC No.



barium(2+); oxido(oxo)borane



InchI Identifier


InchI Key


Packaging Specifications

Typical bulk packaging includes palletized plastic 5 gallon/25 kg. pails, fiber and steel drums to 1 ton super sacks in full container (FCL) or truck load (T/L) quantities. Research and sample quantities and hygroscopic, oxidizing or other air sensitive materials may be packaged under argon or vacuum. Shipping documentation includes a Certificate of Analysis and Safety Data Sheet (SDS). Solutions are packaged in polypropylene, plastic or glass jars up to palletized 440 gallon liquid totes, and 36,000 lb. tanker trucks.

Related Elements

See more Barium products. Barium (atomic symbol: Ba, atomic number: 56) is a Block S, Group 2, Period 6 element with an atomic weight of 137.27. The number of electrons in each of barium's shells is [2, 8, 18, 18, 8, 2] and its electron configuration is [Xe] 6s2. Barium Bohr ModelBarium is a member of the alkaline-earth metals. The barium atom has a radius of 222 pm and a Van der Waals radius of 268 pm. Barium was discovered by Carl Wilhelm Scheele in 1772 and first isolated by Humphry Davy in 1808. Elemental BariumIn its elemental form, barium is a soft, silvery-gray metal. Industrial applications for barium include acting as a "getterer," or unwanted gas remover, for vacuum tubes, and as an additive to steel and cast iron. Barium is also alloyed with silicon and aluminum as load-bearing alloys. The main commercial source of barium is the mineral barite (BaSO4) it does not occur naturally as a free element . The name barium is derived from the Greek word "barys," meaning heavy.

See more Boron products. Boron Bohr ModelBoron (atomic symbol: B, atomic number: 5) is a Block P, Group 13, Period 2 element with an atomic weight of 10.81. The number of electrons in each of boron's shells is 2, 3 and its electron configuration is [He] 2s2 2p1. The boron atom has a radius of 90 pm and a Van der Waals radius of 192 pm. Boron was discovered by Joseph Louis Gay-Lussac and Louis Jacques Thénard in 1808. It was first isolated by Humphry Davy, also in 1808. Boron is classified as a metalloid is not found naturally on earth. Elemental BoronAlong with carbon and nitrogen, boron is one of the few elements in the periodic table known to form stable compounds featuring triple bonds. Boron has an energy band gap of 1.50 to 1.56 eV, which is higher than that of either silicon or germanium. Boron is found in borates, borax, boric acid, colemanite, kernite, and ulexite.The name Boron originates from a combination of carbon and the Arabic word buraqu meaning borax.


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