2,2,4,4,6,6-Hexamethylcyclotrisilazane
- CAS No.
- 1009-93-4
- Chemical Name:
- 2,2,4,4,6,6-Hexamethylcyclotrisilazane
- Synonyms
- HEXAMETHYLCYCLOTRISILAZANE;H7250;DK024;CH7250;nsc139842;2,2,4,4,6,6-Hexamethy;dimethylsilazanetrimer;LABOTEST-BB LT00454897;Dimethylsilazane trimer;Cyclotrisilazane, hexamethyl-
- CBNumber:
- CB1724802
- Molecular Formula:
- C6H21N3Si3
- Molecular Weight:
- 219.51
- MDL Number:
- MFCD00039698
- MOL File:
- 1009-93-4.mol
- MSDS File:
- SDS
- TDS File:
- TDS
| Melting point | −10 °C(lit.) |
|---|---|
| Boiling point | 188 °C756 mm Hg(lit.) |
| Density | 0.92 g/mL at 25 °C(lit.) |
| vapor pressure | 35Pa at 25℃ |
| refractive index |
n |
| Flash point | 139 °F |
| storage temp. | 2-8°C, protect from light |
| Water Solubility | Decomposes in contact with water,Insoluble in water |
| pka | 14.76±0.20(Predicted) |
| form | liquid |
| color | colorless |
| Specific Gravity | 0.922 |
| Hydrolytic Sensitivity | 7: reacts slowly with moisture/water |
| BRN | 774739 |
| InChI | 1S/C6H21N3Si3/c1-10(2)7-11(3,4)9-12(5,6)8-10/h7-9H,1-6H3 |
| InChIKey | WGGNJZRNHUJNEM-UHFFFAOYSA-N |
| SMILES | C[Si]1(C)N[Si](C)(C)N[Si](C)(C)N1 |
| CAS DataBase Reference | 1009-93-4(CAS DataBase Reference) |
| EWG's Food Scores | 1 |
| FDA UNII | ECL2W6GI8L |
| NIST Chemistry Reference | Hexamethylcyclotrisilazane(1009-93-4) |
| EPA Substance Registry System | Cyclotrisilazane, 2,2,4,4,6,6-hexamethyl- (1009-93-4) |
| UNSPSC Code | 12352103 |
| NACRES | NA.22 |
SAFETY
Risk and Safety Statements
| Symbol(GHS) |   GHS02,GHS07,GHS02,GHS07 |
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|---|---|---|---|---|---|---|---|---|---|---|
| Signal word | Warning | |||||||||
| Hazard statements | H226-H302-H315-H319-H335 | |||||||||
| Precautionary statements | P210-P233-P240-P301+P312+P330-P302+P352-P305+P351+P338-P301+P312-P303+P361+P353 | |||||||||
| target organs | Respiratory system | |||||||||
| PPE | Eyeshields, Faceshields, Gloves, type ABEK (EN14387) respirator filter | |||||||||
| Hazard Codes | Xi | |||||||||
| Risk Statements | 36/37/38 | |||||||||
| Safety Statements | 26-36 | |||||||||
| RIDADR | 1993 | |||||||||
| WGK Germany | 3 | |||||||||
| RTECS | GZ4720000 | |||||||||
| F | 10-21 | |||||||||
| TSCA | TSCA listed | |||||||||
| HazardClass | 3.2 | |||||||||
| PackingGroup | III | |||||||||
| HS Code | 29349990 | |||||||||
| Storage Class | 3 - Flammable liquids | |||||||||
| Hazard Classifications | Acute Tox. 4 Oral Eye Irrit. 2 Flam. Liq. 3 Skin Irrit. 2 STOT SE 3 |
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| REACH Registrations | Active | |||||||||
| NFPA 704 |
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2,2,4,4,6,6-Hexamethylcyclotrisilazane price More Price(18)
| Manufacturer | Product number | Product description | CAS number | Packaging | Price | Updated | Buy |
|---|---|---|---|---|---|---|---|
| Sigma-Aldrich | 376043 | 2,2,4,4,6,6-Hexamethylcyclotrisilazane 97% | 1009-93-4 | 10ml | $195 | 2023-06-20 | Buy |
| TCI Chemical | H0909 | 2,2,4,4,6,6-Hexamethylcyclotrisilazane >97.0%(GC)(T) | 1009-93-4 | 5mL | $48 | 2026-04-30 | Buy |
| TCI Chemical | H0909 | 2,2,4,4,6,6-Hexamethylcyclotrisilazane >97.0%(GC)(T) | 1009-93-4 | 25mL | $129 | 2026-04-30 | Buy |
| Strem Chemicals | 14-1510 | 2,2,4,4,6,6-Hexamethylcyclotrisilazane, 97% 97% | 1009-93-4 | 5g | $62 | 2026-04-30 | Buy |
| Strem Chemicals | 14-1510 | 2,2,4,4,6,6-Hexamethylcyclotrisilazane, 97% 97% | 1009-93-4 | 25g | $103 | 2026-04-30 | Buy |
2,2,4,4,6,6-Hexamethylcyclotrisilazane Chemical Properties,Uses,Production
Preparation
2,2,4,4,6,6-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.
Description
2,2,4,4,6,6-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.
Chemical Properties
clear colorless liquid
Uses
2,2,4,4,6,6-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.
Hazard
Moderately toxic by ingestion.
Flammability and Explosibility
Flammable
Purification Methods
Purify it by fractional distillation at atmospheric pressure until the temperature reaches 200o. It is moisture sensitive. The residue in the flask is mostly octamethylcyclotetrasilazane. [Brewer & Haber J Am Chem Soc 70 3888 1948, Beilstein 4 III 1887.]
Toxics Screening Level
The ITSL for hexamethylcyclotrisilazane is 0.1 μg/m3 based on an annual averaging time.
2,2,4,4,6,6-Hexamethylcyclotrisilazane Preparation Products And Raw materials
Raw materials
Preparation Products
| Supplier | Tel | Country | ProdList | Advantage | |
|---|---|---|---|---|---|
| Suzhou Siso new material Co.,Ltd. | 0512-65402974 18550909935 | siso03@126.com | China | 1925 | 58 |
| Hubei Yunmei Technology Limited | 027-59206672 18995657604 | service@yunmeichem.com | China | 4682 | 58 |
| J & K SCIENTIFIC LTD. | 18210857532 18210857532 | jkinfo@jkchemical.com | China | 96815 | 76 |
| Meryer (Shanghai) Chemical Technology Co., Ltd. | 4006356688 18621169109 | market03@meryer.com | China | 40202 | 62 |
| TCI (Shanghai) Development Co., Ltd. | 021-67121386 | Sales-CN@TCIchemicals.com | China | 24512 | 81 |
| Energy Chemical | 400-0056266 | sales8178@energy-chemical.com | China | 44850 | 61 |
| Adamas Reagent, Ltd. | 400-6009262 15618770481 | yhx@titansci.com | China | 14098 | 59 |
| Shanghai Hanhong Scientific Co.,Ltd. | 021-54306202 13764082696 | info@hanhongsci.com | China | 42917 | 64 |
| Shanghai T&W Pharmaceutical Co., Ltd. | +86 21 61551611 | China | 9874 | 58 | |
| Jiangsu Aikon Biopharmaceutical R&D co.,Ltd. | 025-66113011 13913916777 | cfzhang@aikonchem.com | China | 19902 | 55 |
View Lastest Price from 2,2,4,4,6,6-Hexamethylcyclotrisilazane manufacturers
| Image | Update time | Product | Price | Min. Order | Purity | Supply Ability | Manufacturer | |
|---|---|---|---|---|---|---|---|---|
 |
2026-09-11 | 1,1,3,3,5,5-Hexamethylcyclotrisilazane
1009-93-4
|
1kg | 96 | 20 tons | Hubei Changfu Chemical Co., Ltd. | ||
 |
2026-09-02 | 2,2,4,4,6,6-Hexamethylcyclotrisilazane
1009-93-4
|
$1.00-100.00 | 1KG | 99% | Henan Fengda Chemical Co., Ltd | ||
 |
2026-05-28 | Hexamethylcyclotrisilazane
1009-93-4
|
$2.00-5.00 | 1KG | 99% | 10000kg | Hebei Chuanghai Biotechnology Co,.LTD |
-
- 1,1,3,3,5,5-Hexamethylcyclotrisilazane
1009-93-4
- $0.00
- 96
- Hubei Changfu Chemical Co., Ltd.
-
- 2,2,4,4,6,6-Hexamethylcyclotrisilazane
1009-93-4
- $1.00-100.00
- 99%
- Henan Fengda Chemical Co., Ltd
-
- Hexamethylcyclotrisilazane
1009-93-4
- $2.00-5.00
- 99%
- Hebei Chuanghai Biotechnology Co,.LTD
