2,2,4,4,6,6-Hexamethylcyclotrisilazane

HCID 66094
NotesReactions
Substructure searchFind similar structures

Basic information

CAS
1009-93-4
Standard SMILES
C[Si]1(C)N[Si](C)(C)N[Si](C)(C)N1
InChIKey
WGGNJZRNHUJNEM-UHFFFAOYSA-N
Molecular formula
C6H21N3Si3
Average molar mass
219.51 g/mol
Monoisotopic mass
219.10432729

Names & identifiers

Preferred name
2,2,4,4,6,6-Hexamethylcyclotrisilazane
IUPAC
2,2,4,4,6,6-hexamethyl-1,3,5,2,4,6-triazatrisilinane
English name
2,2,4,4,6,6-Hexamethylcyclotrisilazane
Molecular formula
C6H21N3Si3
Molecular weight
219.51

Names & synonyms

1009-93-42,2,4,4,6,6-Hexamethylcyclotrisilazane2,2,4,4,6,6-Hexamethyl-1,3,5,2,4,6-triazatrisilinaneHexamethylcyclotrisilazaneCyclotrisilazane, 2,2,4,4,6,6-hexamethyl-Dimethylsilazane trimerNSC 139842DTXSID4037748UNII-ECL2W6GI8LECL2W6GI8LEINECS 213-773-6BRN 0774739
Show more names
DK024nsc1398422,2,4,4,6,6-HexamethydimethylsilazanetrimerLABOTEST-BB LT00454897
CH7250NSC-139842Cyclotrisilazane, hexamethyl-DTXCID2017748WGGNJZRNHUJNEM-UHFFFAOYSA-4-04-00-04114 (Beilstein Handbook Reference)H7250RefChem:80856

Database identifiers

CAS
1009-93-4
PubChem CID
66094
DTXSID
DTXSID4037748
ChEMBL
CHEMBL3183025
UNII
ECL2W6GI8L
EC Number
213-773-6
Nikkaji
J26.484I

Properties

Computed structural properties

Topological polar surface area
36.1 Ų
Hydrogen bond donors
3
Hydrogen bond acceptors
3
Rotatable bonds
0
Heavy atoms
12

Physicochemical properties

Melting point
10 °C · −10 °C(lit.)
Boiling point
188 °C756 · 188 °C756 mm Hg(lit.)
Density
0.92 g/mL · 0.92 g/mL at 25 °C(lit.)
vapor pressure
35 Pa · 35Pa at 25℃
refractive index
20 · n20/D 1.445(lit.)
Flash point
139 °F · 139 °F

Safety & regulation

GHS classification

GHS Classification · 6 items

This chemical does not meet GHS hazard criteria for 5.7% (4 of 70) of reports.

Warning

H226 (92.9%): Flammable liquid and vapor [Warning Flammable liquids]；H302 (94.3%): Harmful if swallowed [Warning Acute toxicity, oral]；H315 (55.7%): Causes skin irritation [Warning Skin corrosion/irritation]；H319 (55.7%): Causes serious eye irritation [Warning Serious eye damage/eye irritation]；H335 (61.4%): May cause respiratory irritation [Warning Specific target organ toxicity, single exposure; Respiratory tract irritation]

P210, P233, P240, P241, P242, P243, P261, P264, P264+P265, P270, P271, P280, P301+P317, P302+P352, P303+P361+P353, P304+P340, P305+P351+P338, P319, P321, P330, P332+P317, P337+P317, P362+P364, P370+P378, P403+P233, P403+P235, P405, and P501 (click each P-code to see the statement)

Aggregated GHS information provided per 70 reports by companies from 6 notifications to the ECHA C&L Inventory. Each notification may be associated with multiple companies.；Reported as not meeting GHS hazard criteria per 4 of 70 reports by companies.；There are 5 notifications provided by 66 of 70 reports by companies with hazard statement code(s).；Information may vary between notifications depending on impurities, additives, and other factors. The percentage value in parenthesis indicates the notified classification ratio from companies that provide hazard codes. Only hazard codes with percentage values above 10% are shown. For more detailed information, please visit ECHA C&L website.

Hazard information

Regulatory Information · 2 items

Chemical: Cyclotrisilazane, 2,2,4,4,6,6-hexamethyl-

Status: Active Update: 26-04-2023 https://echa.europa.eu/registration-dossier/-/registered-dossier/19361

Hazard Classes and CategoriesFlam. Liq. 3 (92.9%)；Acute Tox. 4 (94.3%)；Skin Irrit. 2 (55.7%)；Eye Irrit. 2 (55.7%)；STOT SE 3 (61.4%)

Regulatory information

Regulatory Information · 2 items

Chemical: Cyclotrisilazane, 2,2,4,4,6,6-hexamethyl-

Status: Active Update: 26-04-2023 https://echa.europa.eu/registration-dossier/-/registered-dossier/19361

Safety data

F
10-21
PPE
Eyeshields, Faceshields, Gloves, type ABEK (EN14387) respirator filter
wgk
3
tsca
TSCA listed
rtecs
GZ4720000
ridadr
1993

Chemistry & industry

Uses & manufacturing

General Manufacturing InformationCyclotrisilazane, 2,2,4,4,6,6-hexamethyl-: ACTIVE
Applications · 2 items

Description2,2,4,4,6,6-Hexamethylcyclotrisilazane is a colorless liquid that is soluble in water. It has an odor similar to ether and a boiling point of about 100 degrees Celsius. The chemical formula for this compound is CH3(CH2)6SiCl6. 2,2,4,4,6,6-Hexamethylcyclotrisilazane has been used as a solvent for producing polymers and as a reagent for organic synthesis. It may also be used as a precursor to silicon dioxide nanoparticles used in producing semiconductors and solar cells. 2,2,4,4,6,6-Hexamethylcyclotrisilazane reacts with hydrochloric acid to produce hydrogen chloride gas and zirconium oxide. It also reacts with sodium citrate in the presence of fatty acids to form an ester product called methyl eth.

Uses2,2,4,4,6,6-Hexamethylcyclotrisilazane has been extensively studied as a precursor for silicon nitride and silicon carbonitride deposition and can also be used as an additive in photoresists. As one of the common silazanes, it is also a good monomer for synthesizing polymers. It readily undergoes ring-opening and copolymerizes with various monomers in the presence of hydroxyl groups, and has wide applications in the synthetic rubber and engineering plastics industries.

Preparation methods

Preparation2,2,4,4,6,6-Hexamethylcyclotrisilazane was first synthesized in 1948 by Brewer and Haber via the reaction of dimethyldichlorosilane Si(CH3)2Cl2 with liquid ammonia NH3, followed by extraction and precipitation with benzene.

Upstream & downstream products

Suppliers100 total

梯希爱(上海)化成工业发展有限公司021-67121386 · [email protected]
上海源象化学有限公司17312431727 · [email protected]
湖北永阔科技有限公司027-59223108 15972152991 · [email protected]
上海阿拉丁生化科技股份有限公司400-6206333 13167063860 · [email protected]
湖北科孚乐材料科技有限公司027-84459282 13720265353 · [email protected]

Related reactions

4 records
New reaction record

Compound notes

Loading…