Synonym: Lanthanum bis(trimethylsilyl)amide, Lanthanum tris(bis(trimethylsilyl)amide), La[N(TMS)2]3

CAS Number 35788-99-9 | MDL Number MFCD00271009 | EC Number 625-134-2

La[N(TMS)2]3 Chemical Structure

Product codeLA8999
CAS number35788-99-9
Assay (purity)98%
Metal purity99.9%-La
Purity methodby titration: %La=21.7-23.0 (complexometric)
Molecular weight620.06 g/mol
Appearancewhite to off-white powder or crystals
Melting point149-152 °C (lit.)
Sensitivityair, moisture
Molecular formulaC18H54LaN3Si6
Linear formulaLa(N[Si(CH3)3]2)3
Packagingglassware/metal containers/bubblers

Tris[N-N-bis(trimethylsilyl)amide]lanthanum(III) is an organo-metallic compounds. See links below

Ereztech manufactures and sells this product in small and bulk volumes. Glass ampules, bottles or metal ampules, or bubblers are available for packaging. For additional analytical information or details about purchasing LA8999 contact us at

Safety information

Hazardous class4.3 (4.1)
Packing groupII
Signal wordDANGER
Hazard statementsH228-H261-H314-H318
Precautionary statementsP210-P223-P231 + P232-P240-P241-P260-P264-P280-P301 + P330 + P331-P303 + P361 + P353-P304 + P340-P305 + P351 + P338-P310-P334 + P335-P363-P370 + P378
Transport descriptionOrganometallic substance, solid, water- reactive, flammable (Tris[N-N- bis(trimethylsilyl)amide] Lanthanum(III))
In TSCA registryNo (sold for research and development usage only)

First Aid Measures

General adviceConsult a physician. Show this safety data sheet to the doctor in attendance. Move out of the dangerous area.
Eye contactRinse thoroughly with plenty of water for at least 15 minutes and consult a physician.
Skin contactWash off with soap and plenty of water. Consult a physician.
InhalationIf breathed in, move person into the fresh air. If not breathing, give artificial respiration. Consult a physician.
If swallowedDo NOT induce vomiting. Never give anything by mouth to an unconscious person. Rinse mouth with water. Consult a physician.


Certificates of Analysis (CoA)

If you don’t see the needed lot of Tris[N-N-bis(trimethylsilyl)amide]lanthanum(III) below please contact customer support at

Lot# 003/489 Lot# 019/254

External identifiers for La[N(TMS)2]3

Pubchem CID4177234
IUPAC Namebis(trimethylsilyl) azanide; lanthanum(3+)
InchI IdentifierInChI=1S/3C6H18NSi2.La/c3*1-8(2,3)7-9(4,5)6;/h3*1-6H3;/q3*-1;+3

Known applications and external links

With Tris[N-N-bis(trimethylsilyl)amide]lanthanum(III) other customers often ask:

Ereztech synthesizes and sells additional LA-compounds.

To purchase LA8999 contact us at