Gallium Lanthanum Sulfide (GLS)

Linear Formula:

Ga2S3 • La2S3


(2N) 99% Gallium Lanthanum Sulfide
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(3N) 99.9% Gallium Lanthanum Sulfide
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(4N) 99.99% Gallium Lanthanum Sulfide
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(5N) 99.999% Gallium Lanthanum Sulfide
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Gallium Lanthanum Sulfide (GLS) Properties (Theoretical)

Molecular Weight 276.9
Appearance Yellow-brown amorphous glass
Melting Point 830 °C
Boiling Point N/A
Density 4.04 g/cm3
Solubility in H2O Negligible
Poisson's Ratio 0.24
Specific Heat 0.54 J·g-1·K-1
Thermal Conductivity 0.43 W·cm-1·K-1 (273 K)
Thermal Expansion 10 x 10-6 °C (273K)
Young's Modulus 59 GPa

Gallium Lanthanum Sulfide (GLS) Health & Safety Information

Signal Word Warning
Hazard Statements H302-H315-H319-H332
Hazard Codes Xi
RTECS Number N/A
Transport Information UN3288 6.1/PG III

About Gallium Lanthanum Sulfide (GLS)

Gallium Lanthanum Sulfide (Gallium Lanthanum Sulphide, or GLS) is a crystalline optical glass composed of gallium sulfide and lanthanum sulfide with excellent thermal stability for optoelectronics applications. GLS is generally immediately available in most volumes. 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, as is additional research, technical and safety (MSDS) data. Please contact us for information on lead time and pricing above.

Gallium Lanthanum Sulfide (GLS) Synonyms

Gallium lanthanum sulfide glass, gallium lanthanum sulphide, GLS, Ga-La-S glasses

Chemical Identifiers

Linear Formula Ga2S3 • La2S3
MDL Number N/A
EC No. N/A

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 Gallium products. Gallium (atomic symbol: Ga, atomic number: 31) is a Block P, Group 13, Period 4 element with an atomic weight of 69.723.The number of electrons in each of Gallium's shells is 2, 8, 18, 3 and its electron configuration is [Ar] 3d10 4s2 4p1. The gallium atom has a radius of 122.1 pm and a Van der Waals radius of 187 pm. Gallium Bohr ModelGallium was predicted by Dmitri Mendeleev in 1871. It was first discovered and isolated by Lecoq de Boisbaudran in 1875. In its elemental form, gallium has a silvery appearance. Elemental GalliumGallium is one of three elements that occur naturally as a liquid at room temperature, the other two being mercury and cesium. Gallium does not exist as a free element in nature and is sourced commercially from bauxite and sphalerite. Currently, gallium is used in semiconductor devices for microelectronics and optics. The element name originates from the Latin word 'Gallia' referring to Gaul, the old name of France.


See more Lanthanum products. Lanthanum (atomic symbol: La, atomic number: 57) is a Block F, Group 3, Period 6 element with an atomic weight of 138.90547. Lanthanum Bohr ModelThe number of electrons in each of lanthanum's shells is [2, 8, 18, 18, 9, 2] and its electron configuration is [Xe] 5d1 6s2. The lanthanum atom has a radius of 187 pm and a Van der Waals radius of 240 pm. Lanthanum was first discovered by Carl Mosander in 1838. In its elemental form, lanthanum has a silvery white appearance.Elemental Lanthanum It is a soft, malleable, and ductile metal that oxidizes easily in air. Lanthanum is the first element in the rare earth or lanthanide series. It is the model for all the other trivalent rare earths and it is the second most abundant of the rare earths after cerium. Lanthanum is found in minerals such as monazite and bastnasite. The name lanthanum originates from the Greek word Lanthaneia, which means 'to lie hidden'.


See more Sulfur products. Sulfur (or Sulphur) (atomic symbol: S, atomic number: 16) is a Block P, Group 16, Period 3 element with an atomic radius of 32.066. Sulfur Bohr ModelThe number of electrons in each of Sulfur's shells is 2, 8, 6 and its electron configuration is [Ne] 3s2 3p4. In its elemental form, sulfur has a light yellow appearance. The sulfur atom has a covalent radius of 105 pm and a Van der Waals radius of 180 pm. In nature, sulfur can be found in hot springs, meteorites, volcanoes, and as galena, gypsum, and epsom salts. Sulfur has been known since ancient times but was not accepted as an element until 1777, when Antoine Lavoisier helped to convince the scientific community that it was an element and not a compound.

Recent Research


July 13, 2024
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