Bis(tri-tert-butylcyclopentadienyl) strontium

Synonym: Sr(tBu3Cp)2, Bis(tri-t-butylcyclopentadienyl) strontium, Bis(1,2,4-tritertiarybutylcyclopentadienyl)strontium

CAS Number 932374-14-6 | EC Number 664-246-6


Product codeSR4146
CAS number932374-14-6
Assay (purity)98.5%+
Purity methodby elemental analysis: % C = 72.5-74.8 ; % H = 10.4-10.7 %
NMR H1conforms to structure
Molecular weight554.44 g/mol
Melting point135-140 °C (275-284 °F)
Appearancewhite to off-white powder
Sensitivityair, moisture
Molecular formulaC34H58Sr
Linear formula[(t-C4H9)3C5H2]2Sr
Packagingglassware/metal containers/bubblers

Bis(tri-tert-butylcyclopentadienyl) strontium was used as Sr precursor, combined with Ti(OCH3)4 as Ti precursor and H2O as O source, for the ALD deposition of SrTiO3 (STO) layers on TiN. Growth and saturation behavior of SrTiO3 and binary oxides (SrO, TiO2) using Ti(OCH3)4, Sr(tBu3Cp)2 and H2O as precursors, was evaluated by ellipsometry thickness measurements. 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 SR4146 contact us at

Safety information

UNNot regulated
Hazardous classNot regulated
Packing groupNot regulated
Signal wordWARNING
Hazard statementsH315-H319-H335
Precautionary statementsP261-P264-P271-P280-P302 + P352-P304 + P340-P305-P351-P338-P312-P332 +P313-P337 + P313-P362
Transport descriptionNONH for all modes of transport
In TSCA registryNo (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 Bis(tri-tert-butylcyclopentadienyl) strontium below please contact customer support at

Lot# 031/342 Lot# 015/713 Lot# 019/250

Known applications and external links

With Bis(tri-tert-butylcyclopentadienyl) strontium other customers often ask:

Ereztech synthesizes and sells additional SR-compounds.

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